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2009-05-02 Vladimir Serbinenko <phcoder@gmail.com>

Browse source 
Efiemu
 
	* conf/i386-pc.rmk: new modules efiemu, efiemu_acpi, efiemu_pnvram,
	_linux_efi, linux_efi. 
	new files in grub-emu 
	new targets efiemu32.o and efiemu64.o
	* loader/linux_normal_efiemu.c: likewise
	* loader/i386/efi/linux.c: added preliminary efiemu support
	* util/i386/pc/grub-install.in: add efiemu??.o to the list of 
	files to copy
	* include/grub/autoefi.h: new file
	* nclude/grub/i386/efiemu.h: likewise
	* include/grub/i386/pc/efiemu.h: likewise
	* include/grub/efi/api.h: add LL suffix when necessary
	new definitions relating to tables
	* include/grub/efiemu/efiemu.h: new file
	* include/grub/efiemu/runtime.h: likewise
	* efiemu/prepare.c: likewise
	* efiemu/loadcore_common.c: likewise
	* efiemu/loadcore64.c: likewise
	* efiemu/runtime/efiemu.sh: likewise
	* efiemu/runtime/efiemu.S: likewise
	* efiemu/runtime/efiemu.c: likewise
	* efiemu/runtime/config.h: likewise
	* efiemu/prepare32.c: likewise
	* efiemu/main.c: likewise
	* efiemu/modules/pnvram.c: likewise
	* efiemu/modules/i386: likewise
	* efiemu/modules/i386/pc: likewise
	* efiemu/modules/acpi.c: likewise
	* efiemu/i386/pc/cfgtables.c: likewise
	* efiemu/i386/loadcore64.c: likewise
	* efiemu/i386/loadcore32.c: likewise
	* efiemu/prepare64.c: likewise
	* efiemu/loadcore.c: likewise
	* efiemu/symbols.c: likewise
	* efiemu/mm.c: likewise
	* efiemu/loadcore32.c: likewise
This commit is contained in:
phcoder 2009-05-02 22:40:21 +00:00
parent f8efe3ad2d
commit 5caf964d75
29 changed files with 4068 additions and 14 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

41
ChangeLog
View file

@ -1,3 +1,44 @@
2009-05-02 Vladimir Serbinenko <phcoder@gmail.com>
Efiemu
* conf/i386-pc.rmk: new modules efiemu, efiemu_acpi, efiemu_pnvram,
_linux_efi, linux_efi.
new files in grub-emu
new targets efiemu32.o and efiemu64.o
* loader/linux_normal_efiemu.c: likewise
* loader/i386/efi/linux.c: added preliminary efiemu support
* util/i386/pc/grub-install.in: add efiemu??.o to the list of
files to copy
* include/grub/autoefi.h: new file
* nclude/grub/i386/efiemu.h: likewise
* include/grub/i386/pc/efiemu.h: likewise
* include/grub/efi/api.h: add LL suffix when necessary
new definitions relating to tables
* include/grub/efiemu/efiemu.h: new file
* include/grub/efiemu/runtime.h: likewise
* efiemu/prepare.c: likewise
* efiemu/loadcore_common.c: likewise
* efiemu/loadcore64.c: likewise
* efiemu/runtime/efiemu.sh: likewise
* efiemu/runtime/efiemu.S: likewise
* efiemu/runtime/efiemu.c: likewise
* efiemu/runtime/config.h: likewise
* efiemu/prepare32.c: likewise
* efiemu/main.c: likewise
* efiemu/modules/pnvram.c: likewise
* efiemu/modules/i386: likewise
* efiemu/modules/i386/pc: likewise
* efiemu/modules/acpi.c: likewise
* efiemu/i386/pc/cfgtables.c: likewise
* efiemu/i386/loadcore64.c: likewise
* efiemu/i386/loadcore32.c: likewise
* efiemu/prepare64.c: likewise
* efiemu/loadcore.c: likewise
* efiemu/symbols.c: likewise
* efiemu/mm.c: likewise
* efiemu/loadcore32.c: likewise
2009-05-02 Vladimir Serbinenko <phcoder@gmail.com> 2009-05-02 Vladimir Serbinenko <phcoder@gmail.com>
ACPI spoofing ACPI spoofing

26
conf/i386-pc.rmk
View file

@ -185,7 +185,17 @@ pkglib_MODULES = biosdisk.mod chain.mod \
aout.mod bsd.mod pxe.mod pxecmd.mod datetime.mod date.mod \ aout.mod bsd.mod pxe.mod pxecmd.mod datetime.mod date.mod \
datehook.mod lsmmap.mod ata_pthru.mod hdparm.mod \ datehook.mod lsmmap.mod ata_pthru.mod hdparm.mod \
usb.mod uhci.mod ohci.mod usbtest.mod usbms.mod usb_keyboard.mod \ usb.mod uhci.mod ohci.mod usbtest.mod usbms.mod usb_keyboard.mod \
mmap.mod acpi.mod efiemu.mod mmap.mod acpi.mod
# For efiemu.mod.
efiemu_mod_SOURCES = efiemu/main.c efiemu/i386/loadcore32.c \
efiemu/i386/loadcore64.c efiemu/i386/pc/cfgtables.c \
efiemu/mm.c efiemu/loadcore_common.c efiemu/symbols.c \
efiemu/loadcore32.c efiemu/loadcore64.c \
efiemu/prepare32.c efiemu/prepare64.c efiemu/pnvram.c \
efiemu/i386/coredetect.c
efiemu_mod_CFLAGS = $(COMMON_CFLAGS) -Werror -Wall
efiemu_mod_LDFLAGS = $(COMMON_LDFLAGS)
# For acpi.mod. # For acpi.mod.
acpi_mod_SOURCES = commands/acpi.c commands/i386/pc/acpi.c acpi_mod_SOURCES = commands/acpi.c commands/i386/pc/acpi.c
@ -370,5 +380,19 @@ hdparm_mod_SOURCES = commands/hdparm.c lib/hexdump.c
hdparm_mod_CFLAGS = $(COMMON_CFLAGS) hdparm_mod_CFLAGS = $(COMMON_CFLAGS)
hdparm_mod_LDFLAGS = $(COMMON_LDFLAGS) hdparm_mod_LDFLAGS = $(COMMON_LDFLAGS)
efiemu32.o: efiemu/runtime/efiemu.c
$(CC) -c -m32 -DELF32 -o $@ -Wall -Werror efiemu/runtime/efiemu.c -nostdlib -O2 -Iefiemu/runtime -Iinclude
efiemu64_c.o: efiemu/runtime/efiemu.c
$(CC) -c -m64 -DELF64 -o $@ -Wall -Werror efiemu/runtime/efiemu.c -nostdlib -mcmodel=large -O2 -Iefiemu/runtime -Iinclude
efiemu64_s.o: efiemu/runtime/efiemu.S
$(CC) -c -m64 -DELF64 -o $@ -Wall -Werror efiemu/runtime/efiemu.S -nostdlib -mcmodel=large -O2 -Iefiemu/runtime -Iinclude
efiemu64.o: efiemu64_c.o efiemu64_s.o
ld -melf_x86_64 -o $@ -r efiemu64_c.o efiemu64_s.o -nostdlib
CLEANFILES += efiemu32.o efiemu64.o efiemu64_c.o efiemu64_s.o
lib_DATA += efiemu32.o efiemu64.o
include $(srcdir)/conf/i386.mk include $(srcdir)/conf/i386.mk
include $(srcdir)/conf/common.mk include $(srcdir)/conf/common.mk

60
efiemu/i386/coredetect.c Normal file
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@ -0,0 +1,60 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/efiemu/efiemu.h>
#include <grub/machine/efiemu.h>
#include <grub/command.h>
#define cpuid(num,a,b,c,d) \
asm volatile ("xchgl %%ebx, %1; cpuid; xchgl %%ebx, %1" \
: "=a" (a), "=r" (b), "=c" (c), "=d" (d) \
: "0" (num))
#define bit_LM (1 << 29)
char *
grub_efiemu_get_default_core_name (void)
{
unsigned int eax, ebx, ecx, edx;
unsigned int max_level;
unsigned int ext_level;
/* See if we can use cpuid. */
asm volatile ("pushfl; pushfl; popl %0; movl %0,%1; xorl %2,%0;"
"pushl %0; popfl; pushfl; popl %0; popfl"
: "=&r" (eax), "=&r" (ebx)
: "i" (0x00200000));
if (((eax ^ ebx) & 0x00200000) == 0)
return "efiemu32.o";
/* Check the highest input value for eax. */
cpuid (0, eax, ebx, ecx, edx);
/* We only look at the first four characters. */
max_level = eax;
if (max_level == 0)
return "efiemu32.o";
cpuid (0x80000000, eax, ebx, ecx, edx);
ext_level = eax;
if (ext_level < 0x80000000)
return "efiemu32.o";
cpuid (0x80000001, eax, ebx, ecx, edx);
return (edx & bit_LM) ? "efiemu64.o" : "efiemu32.o";
}

114
efiemu/i386/loadcore32.c Normal file
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@ -0,0 +1,114 @@
/* i386 CPU-specific part of loadcore.c for 32-bit mode */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/err.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/efiemu/efiemu.h>
#include <grub/cpu/efiemu.h>
#include <grub/elf.h>
/* Check if EHDR is a valid ELF header. */
int
grub_arch_efiemu_check_header32 (void *ehdr)
{
Elf32_Ehdr *e = ehdr;
/* Check the magic numbers. */
return (e->e_ident[EI_CLASS] == ELFCLASS32
&& e->e_ident[EI_DATA] == ELFDATA2LSB
&& e->e_machine == EM_386);
}
/* Relocate symbols. */
grub_err_t
grub_arch_efiemu_relocate_symbols32 (grub_efiemu_segment_t segs,
struct grub_efiemu_elf_sym *elfsyms,
void *ehdr)
{
unsigned i;
Elf32_Ehdr *e = ehdr;
Elf32_Shdr *s;
grub_err_t err;
grub_dprintf ("efiemu", "relocating symbols %d %d\n",
e->e_shoff, e->e_shnum);
for (i = 0, s = (Elf32_Shdr *) ((char *) e + e->e_shoff);
i < e->e_shnum;
i++, s = (Elf32_Shdr *) ((char *) s + e->e_shentsize))
if (s->sh_type == SHT_REL)
{
grub_efiemu_segment_t seg;
grub_dprintf ("efiemu", "shtrel\n");
/* Find the target segment. */
for (seg = segs; seg; seg = seg->next)
if (seg->section == s->sh_info)
break;
if (seg)
{
Elf32_Rel *rel, *max;
for (rel = (Elf32_Rel *) ((char *) e + s->sh_offset),
max = rel + s->sh_size / s->sh_entsize;
rel < max;
rel++)
{
Elf32_Word *addr;
struct grub_efiemu_elf_sym sym;
if (seg->size < rel->r_offset)
return grub_error (GRUB_ERR_BAD_MODULE,
"reloc offset is out of the segment");
addr = (Elf32_Word *)
((char *) grub_efiemu_mm_obtain_request (seg->handle)
+ seg->off + rel->r_offset);
sym = elfsyms[ELF32_R_SYM (rel->r_info)];
switch (ELF32_R_TYPE (rel->r_info))
{
case R_386_32:
if ((err = grub_efiemu_write_value
(addr, sym.off + *addr, sym.handle, 0,
seg->ptv_rel_needed, sizeof (grub_uint32_t))))
return err;
break;
case R_386_PC32:
if ((err = grub_efiemu_write_value
(addr, sym.off + *addr - rel->r_offset
- seg->off, sym.handle, seg->handle,
seg->ptv_rel_needed, sizeof (grub_uint32_t))))
return err;
break;
default:
return grub_error (GRUB_ERR_BAD_OS,
"unrecognised relocation");
}
}
}
}
return GRUB_ERR_NONE;
}

120
efiemu/i386/loadcore64.c Normal file
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@ -0,0 +1,120 @@
/* i386 CPU-specific part of loadcore.c for 32-bit mode */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/err.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/efiemu/efiemu.h>
#include <grub/cpu/efiemu.h>
#include <grub/elf.h>
/* Check if EHDR is a valid ELF header. */
int
grub_arch_efiemu_check_header64 (void *ehdr)
{
Elf64_Ehdr *e = ehdr;
return (e->e_ident[EI_CLASS] == ELFCLASS64
&& e->e_ident[EI_DATA] == ELFDATA2LSB
&& e->e_machine == EM_X86_64);
}
/* Relocate symbols. */
grub_err_t
grub_arch_efiemu_relocate_symbols64 (grub_efiemu_segment_t segs,
struct grub_efiemu_elf_sym *elfsyms,
void *ehdr)
{
unsigned i;
Elf64_Ehdr *e = ehdr;
Elf64_Shdr *s;
grub_err_t err;
for (i = 0, s = (Elf64_Shdr *) ((char *) e + e->e_shoff);
i < e->e_shnum;
i++, s = (Elf64_Shdr *) ((char *) s + e->e_shentsize))
if (s->sh_type == SHT_RELA)
{
grub_efiemu_segment_t seg;
grub_dprintf ("efiemu", "shtrel\n");
/* Find the target segment. */
for (seg = segs; seg; seg = seg->next)
if (seg->section == s->sh_info)
break;
if (seg)
{
Elf64_Rela *rel, *max;
for (rel = (Elf64_Rela *) ((char *) e + s->sh_offset),
max = rel + (unsigned long) s->sh_size
/ (unsigned long)s->sh_entsize;
rel < max;
rel++)
{
void *addr;
grub_uint32_t *addr32;
grub_uint64_t *addr64;
struct grub_efiemu_elf_sym sym;
if (seg->size < rel->r_offset)
return grub_error (GRUB_ERR_BAD_MODULE,
"reloc offset is out of the segment");
addr =
((char *) grub_efiemu_mm_obtain_request (seg->handle)
+ seg->off + rel->r_offset);
addr32 = (grub_uint32_t *) addr;
addr64 = (grub_uint64_t *) addr;
sym = elfsyms[ELF64_R_SYM (rel->r_info)];
switch (ELF64_R_TYPE (rel->r_info))
{
case R_X86_64_64:
if ((err = grub_efiemu_write_value
(addr, *addr64 + rel->r_addend + sym.off, sym.handle,
0, seg->ptv_rel_needed, sizeof (grub_uint64_t))))
return err;
break;
case R_X86_64_PC32:
if ((err = grub_efiemu_write_value
(addr, *addr32 + rel->r_addend + sym.off
- rel->r_offset - seg->off, sym.handle, seg->handle,
seg->ptv_rel_needed, sizeof (grub_uint32_t))))
return err;
break;
case R_X86_64_32:
case R_X86_64_32S:
if ((err = grub_efiemu_write_value
(addr, *addr32 + rel->r_addend + sym.off, sym.handle,
0, seg->ptv_rel_needed, sizeof (grub_uint32_t))))
return err;
break;
default:
return grub_error (GRUB_ERR_BAD_OS,
"unrecognised relocation");
}
}
}
}
return GRUB_ERR_NONE;
}

76
efiemu/i386/pc/cfgtables.c Normal file
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@ -0,0 +1,76 @@
/* Register SMBIOS and ACPI tables. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/err.h>
#include <grub/efiemu/efiemu.h>
#include <grub/machine/efiemu.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/acpi.h>
grub_err_t
grub_machine_efiemu_init_tables ()
{
grub_uint8_t *ptr;
void *table;
grub_err_t err;
grub_efi_guid_t smbios = GRUB_EFI_SMBIOS_TABLE_GUID;
grub_efi_guid_t acpi20 = GRUB_EFI_ACPI_20_TABLE_GUID;
grub_efi_guid_t acpi = GRUB_EFI_ACPI_TABLE_GUID;
err = grub_efiemu_unregister_configuration_table (smbios);
if (err)
return err;
err = grub_efiemu_unregister_configuration_table (acpi);
if (err)
return err;
err = grub_efiemu_unregister_configuration_table (acpi20);
if (err)
return err;
table = grub_acpi_get_rsdpv1 ();
if (table)
{
err = grub_efiemu_register_configuration_table (acpi, 0, 0, table);
if (err)
return err;
}
table = grub_acpi_get_rsdpv2 ();
if (table)
{
err = grub_efiemu_register_configuration_table (acpi20, 0, 0, table);
if (err)
return err;
}
for (ptr = (grub_uint8_t *) 0xf0000; ptr < (grub_uint8_t *) 0x100000;
ptr += 16)
if (grub_memcmp (ptr, "_SM_", 4) == 0
&& grub_byte_checksum (ptr, *(ptr + 5)) == 0)
break;
if (ptr < (grub_uint8_t *) 0x100000)
{
grub_dprintf ("efiemu", "Registering SMBIOS\n");
if ((err = grub_efiemu_register_configuration_table (smbios, 0, 0, ptr)))
return err;
}
return GRUB_ERR_NONE;
}

365
efiemu/loadcore.c Normal file
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@ -0,0 +1,365 @@
/* Load runtime image of EFIemu. Functions specific to 32/64-bit mode */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/err.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/efiemu/efiemu.h>
#include <grub/cpu/efiemu.h>
#include <grub/machine/efiemu.h>
#include <grub/elf.h>
/* ELF symbols and their values */
static struct grub_efiemu_elf_sym *grub_efiemu_elfsyms = 0;
static int grub_efiemu_nelfsyms = 0;
/* Return the address of a section whose index is N. */
static grub_err_t
grub_efiemu_get_section_addr (grub_efiemu_segment_t segs, unsigned n,
int *handle, grub_off_t *off)
{
grub_efiemu_segment_t seg;
for (seg = segs; seg; seg = seg->next)
if (seg->section == n)
{
*handle = seg->handle;
*off = seg->off;
return GRUB_ERR_NONE;
}
return grub_error (GRUB_ERR_BAD_OS, "section %d not found", n);
}
grub_err_t
SUFFIX (grub_efiemu_loadcore_unload) (void)
{
grub_free (grub_efiemu_elfsyms);
grub_efiemu_elfsyms = 0;
return GRUB_ERR_NONE;
}
/* Check if EHDR is a valid ELF header. */
int
SUFFIX (grub_efiemu_check_header) (void *ehdr, grub_size_t size)
{
Elf_Ehdr *e = ehdr;
/* Check the header size. */
if (size < sizeof (Elf_Ehdr))
return 0;
/* Check the magic numbers. */
if (!SUFFIX (grub_arch_efiemu_check_header) (ehdr)
|| e->e_ident[EI_MAG0] != ELFMAG0
|| e->e_ident[EI_MAG1] != ELFMAG1
|| e->e_ident[EI_MAG2] != ELFMAG2
|| e->e_ident[EI_MAG3] != ELFMAG3
|| e->e_ident[EI_VERSION] != EV_CURRENT
|| e->e_version != EV_CURRENT)
return 0;
return 1;
}
/* Load all segments from memory specified by E. */
static grub_err_t
grub_efiemu_load_segments (grub_efiemu_segment_t segs, const Elf_Ehdr *e)
{
Elf_Shdr *s;
grub_efiemu_segment_t cur;
grub_dprintf ("efiemu", "loading segments\n");
for (cur=segs; cur; cur = cur->next)
{
s = (Elf_Shdr *)cur->srcptr;
if ((s->sh_flags & SHF_ALLOC) && s->sh_size)
{
void *addr;
addr = (grub_uint8_t *) grub_efiemu_mm_obtain_request (cur->handle)
+ cur->off;
switch (s->sh_type)
{
case SHT_PROGBITS:
grub_memcpy (addr, (char *) e + s->sh_offset, s->sh_size);
break;
case SHT_NOBITS:
grub_memset (addr, 0, s->sh_size);
break;
}
}
}
return GRUB_ERR_NONE;
}
/* Get a string at offset OFFSET from strtab */
static char *
grub_efiemu_get_string (unsigned offset, const Elf_Ehdr *e)
{
unsigned i;
Elf_Shdr *s;
for (i = 0, s = (Elf_Shdr *)((char *) e + e->e_shoff);
i < e->e_shnum;
i++, s = (Elf_Shdr *)((char *) s + e->e_shentsize))
if (s->sh_type == SHT_STRTAB && offset < s->sh_size)
return (char *) e + s->sh_offset + offset;
return 0;
}
/* Request memory for segments and fill segments info */
static grub_err_t
grub_efiemu_init_segments (grub_efiemu_segment_t *segs, const Elf_Ehdr *e)
{
unsigned i;
Elf_Shdr *s;
for (i = 0, s = (Elf_Shdr *)((char *) e + e->e_shoff);
i < e->e_shnum;
i++, s = (Elf_Shdr *)((char *) s + e->e_shentsize))
{
if (s->sh_flags & SHF_ALLOC)
{
grub_efiemu_segment_t seg;
seg = (grub_efiemu_segment_t) grub_malloc (sizeof (*seg));
if (! seg)
return grub_errno;
if (s->sh_size)
{
seg->handle
= grub_efiemu_request_memalign
(s->sh_addralign, s->sh_size,
s->sh_flags & SHF_EXECINSTR ? GRUB_EFI_RUNTIME_SERVICES_CODE
: GRUB_EFI_RUNTIME_SERVICES_DATA);
if (seg->handle < 0)
return grub_errno;
seg->off = 0;
}
/*
.text-physical doesn't need to be relocated when switching to
virtual mode
*/
if (!grub_strcmp (grub_efiemu_get_string (s->sh_name, e),
".text-physical"))
seg->ptv_rel_needed = 0;
else
seg->ptv_rel_needed = 1;
seg->size = s->sh_size;
seg->section = i;
seg->next = *segs;
seg->srcptr = s;
*segs = seg;
}
}
return GRUB_ERR_NONE;
}
/* Count symbols and relocators and allocate/request memory for them */
static grub_err_t
grub_efiemu_count_symbols (const Elf_Ehdr *e)
{
unsigned i;
Elf_Shdr *s;
int num = 0;
/* Symbols */
for (i = 0, s = (Elf_Shdr *) ((char *) e + e->e_shoff);
i < e->e_shnum;
i++, s = (Elf_Shdr *) ((char *) s + e->e_shentsize))
if (s->sh_type == SHT_SYMTAB)
break;
if (i == e->e_shnum)
return grub_error (GRUB_ERR_BAD_OS, "no symbol table");
grub_efiemu_nelfsyms = (unsigned) s->sh_size / (unsigned) s->sh_entsize;
grub_efiemu_elfsyms = (struct grub_efiemu_elf_sym *)
grub_malloc (sizeof (struct grub_efiemu_elf_sym) * grub_efiemu_nelfsyms);
/* Relocators */
for (i = 0, s = (Elf_Shdr *) ((char *) e + e->e_shoff);
i < e->e_shnum;
i++, s = (Elf_Shdr *) ((char *) s + e->e_shentsize))
if (s->sh_type == SHT_REL || s->sh_type == SHT_RELA)
num += ((unsigned) s->sh_size) / ((unsigned) s->sh_entsize);
grub_efiemu_request_symbols (num);
return GRUB_ERR_NONE;
}
/* Fill grub_efiemu_elfsyms with symbol values */
static grub_err_t
grub_efiemu_resolve_symbols (grub_efiemu_segment_t segs, Elf_Ehdr *e)
{
unsigned i;
Elf_Shdr *s;
Elf_Sym *sym;
const char *str;
Elf_Word size, entsize;
grub_dprintf ("efiemu", "resolving symbols\n");
for (i = 0, s = (Elf_Shdr *) ((char *) e + e->e_shoff);
i < e->e_shnum;
i++, s = (Elf_Shdr *) ((char *) s + e->e_shentsize))
if (s->sh_type == SHT_SYMTAB)
break;
if (i == e->e_shnum)
return grub_error (GRUB_ERR_BAD_OS, "no symbol table");
sym = (Elf_Sym *) ((char *) e + s->sh_offset);
size = s->sh_size;
entsize = s->sh_entsize;
s = (Elf_Shdr *) ((char *) e + e->e_shoff + e->e_shentsize * s->sh_link);
str = (char *) e + s->sh_offset;
for (i = 0;
i < size / entsize;
i++, sym = (Elf_Sym *) ((char *) sym + entsize))
{
unsigned char type = ELF_ST_TYPE (sym->st_info);
unsigned char bind = ELF_ST_BIND (sym->st_info);
int handle;
grub_off_t off;
grub_err_t err;
const char *name = str + sym->st_name;
grub_efiemu_elfsyms[i].section = sym->st_shndx;
switch (type)
{
case STT_NOTYPE:
/* Resolve a global symbol. */
if (sym->st_name != 0 && sym->st_shndx == 0)
{
if ((err = grub_efiemu_resolve_symbol (name, &handle, &off)))
return err;
grub_efiemu_elfsyms[i].handle = handle;
grub_efiemu_elfsyms[i].off = off;
}
else
sym->st_value = 0;
break;
case STT_OBJECT:
if ((err = grub_efiemu_get_section_addr
(segs, sym->st_shndx, &handle, &off)))
return err;
off += sym->st_value;
if (bind != STB_LOCAL)
if ((err = grub_efiemu_register_symbol (name, handle, off)))
return err;
grub_efiemu_elfsyms[i].handle = handle;
grub_efiemu_elfsyms[i].off = off;
break;
case STT_FUNC:
if ((err = grub_efiemu_get_section_addr
(segs, sym->st_shndx, &handle, &off)))
return err;
off += sym->st_value;
if (bind != STB_LOCAL)
if ((err = grub_efiemu_register_symbol (name, handle, off)))
return err;
grub_efiemu_elfsyms[i].handle = handle;
grub_efiemu_elfsyms[i].off = off;
break;
case STT_SECTION:
if ((err = grub_efiemu_get_section_addr
(segs, sym->st_shndx, &handle, &off)))
{
grub_efiemu_elfsyms[i].handle = 0;
grub_efiemu_elfsyms[i].off = 0;
grub_errno = GRUB_ERR_NONE;
break;
}
grub_efiemu_elfsyms[i].handle = handle;
grub_efiemu_elfsyms[i].off = off;
break;
case STT_FILE:
grub_efiemu_elfsyms[i].handle = 0;
grub_efiemu_elfsyms[i].off = 0;
break;
default:
return grub_error (GRUB_ERR_BAD_MODULE,
"unknown symbol type `%d'", (int) type);
}
}
return GRUB_ERR_NONE;
}
/* Load runtime to the memory and request memory for definitive location*/
grub_err_t
SUFFIX (grub_efiemu_loadcore_init) (void *core, grub_size_t core_size,
grub_efiemu_segment_t *segments)
{
Elf_Ehdr *e = (Elf_Ehdr *) core;
grub_err_t err;
if (e->e_type != ET_REL)
return grub_error (GRUB_ERR_BAD_MODULE, "invalid ELF file type");
/* Make sure that every section is within the core. */
if ((grub_size_t) core_size < e->e_shoff + e->e_shentsize * e->e_shnum)
return grub_error (GRUB_ERR_BAD_OS, "ELF sections outside core");
if ((err = grub_efiemu_init_segments (segments, core)))
return err;
if ((err = grub_efiemu_count_symbols (core)))
return err;
grub_efiemu_request_symbols (1);
return GRUB_ERR_NONE;
}
/* Load runtime definitively */
grub_err_t
SUFFIX (grub_efiemu_loadcore_load) (void *core,
grub_size_t core_size
__attribute__ ((unused)),
grub_efiemu_segment_t segments)
{
grub_err_t err;
if ((err = grub_efiemu_load_segments (segments, core)))
return err;
if ((err = grub_efiemu_resolve_symbols (segments, core)))
return err;
if ((err = SUFFIX (grub_arch_efiemu_relocate_symbols) (segments,
grub_efiemu_elfsyms,
core)))
return err;
return GRUB_ERR_NONE;
}

27
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/* This file contains definitions so that loadcore.c compiles for 32-bit */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#define SUFFIX(x) x ## 32
#define Elf_Ehdr Elf32_Ehdr
#define Elf_Shdr Elf32_Shdr
#define Elf_Sym Elf32_Sym
#define Elf_Word Elf32_Word
#define ELF_ST_TYPE ELF32_ST_TYPE
#define ELF_ST_BIND ELF32_ST_BIND
#include "loadcore.c"

27
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/* This file contains definitions so that loadcore.c compiles for 64-bit */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#define SUFFIX(x) x ## 64
#define Elf_Ehdr Elf64_Ehdr
#define Elf_Shdr Elf64_Shdr
#define Elf_Sym Elf64_Sym
#define Elf_Word Elf64_Word
#define ELF_ST_TYPE ELF64_ST_TYPE
#define ELF_ST_BIND ELF64_ST_BIND
#include "loadcore.c"

189
efiemu/loadcore_common.c Normal file
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/* Load runtime image of EFIemu. Functions common to 32/64-bit mode */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/file.h>
#include <grub/err.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/efiemu/efiemu.h>
#include <grub/cpu/efiemu.h>
/* Are we in 32 or 64-bit mode?*/
static grub_efiemu_mode_t grub_efiemu_mode = GRUB_EFIEMU_NOTLOADED;
/* Runtime ELF file */
static grub_ssize_t efiemu_core_size;
static void *efiemu_core = 0;
/* Linked list of segments */
static grub_efiemu_segment_t efiemu_segments = 0;
/* equivalent to sizeof (grub_efi_uintn_t) but taking the mode into account*/
int
grub_efiemu_sizeof_uintn_t (void)
{
if (grub_efiemu_mode == GRUB_EFIEMU32)
return 4;
if (grub_efiemu_mode == GRUB_EFIEMU64)
return 8;
return 0;
}
/* Check the header and set mode */
static grub_err_t
grub_efiemu_check_header (void *ehdr, grub_size_t size,
grub_efiemu_mode_t *mode)
{
/* Check the magic numbers. */
if ((*mode == GRUB_EFIEMU_NOTLOADED || *mode == GRUB_EFIEMU32)
&& grub_efiemu_check_header32 (ehdr,size))
{
*mode = GRUB_EFIEMU32;
return GRUB_ERR_NONE;
}
if ((*mode == GRUB_EFIEMU_NOTLOADED || *mode == GRUB_EFIEMU64)
&& grub_efiemu_check_header64 (ehdr,size))
{
*mode = GRUB_EFIEMU64;
return GRUB_ERR_NONE;
}
return grub_error (GRUB_ERR_BAD_OS, "invalid ELF magic");
}
/* Unload segments */
static int
grub_efiemu_unload_segs (grub_efiemu_segment_t seg)
{
grub_efiemu_segment_t segn;
for (; seg; seg = segn)
{
segn = seg->next;
grub_efiemu_mm_return_request (seg->handle);
grub_free (seg);
}
return 1;
}
grub_err_t
grub_efiemu_loadcore_unload(void)
{
switch (grub_efiemu_mode)
{
case GRUB_EFIEMU32:
grub_efiemu_loadcore_unload32 ();
break;
case GRUB_EFIEMU64:
grub_efiemu_loadcore_unload64 ();
break;
default:
break;
}
grub_efiemu_mode = GRUB_EFIEMU_NOTLOADED;
grub_free (efiemu_core);
efiemu_core = 0;
grub_efiemu_unload_segs (efiemu_segments);
efiemu_segments = 0;
grub_efiemu_free_syms ();
return GRUB_ERR_NONE;
}
/* Load runtime file and do some initial preparations */
grub_err_t
grub_efiemu_loadcore_init (grub_file_t file)
{
grub_err_t err;
efiemu_core_size = grub_file_size (file);
efiemu_core = 0;
efiemu_core = grub_malloc (efiemu_core_size);
if (! efiemu_core)
return grub_errno;
if (grub_file_read (file, efiemu_core, efiemu_core_size)
!= (int) efiemu_core_size)
{
grub_free (efiemu_core);
efiemu_core = 0;
return grub_errno;
}
if (grub_efiemu_check_header (efiemu_core, efiemu_core_size,
&grub_efiemu_mode))
{
grub_free (efiemu_core);
efiemu_core = 0;
return GRUB_ERR_BAD_MODULE;
}
switch (grub_efiemu_mode)
{
case GRUB_EFIEMU32:
if ((err = grub_efiemu_loadcore_init32 (efiemu_core, efiemu_core_size,
&efiemu_segments)))
{
grub_free (efiemu_core);
efiemu_core = 0;
grub_efiemu_mode = GRUB_EFIEMU_NOTLOADED;
return err;
}
break;
case GRUB_EFIEMU64:
if ((err = grub_efiemu_loadcore_init64 (efiemu_core, efiemu_core_size,
&efiemu_segments)))
{
grub_free (efiemu_core);
efiemu_core = 0;
grub_efiemu_mode = GRUB_EFIEMU_NOTLOADED;
return err;
}
break;
default:
return grub_error (GRUB_ERR_BAD_OS, "unknown EFI runtime");
}
return GRUB_ERR_NONE;
}
grub_err_t
grub_efiemu_loadcore_load (void)
{
grub_err_t err;
switch (grub_efiemu_mode)
{
case GRUB_EFIEMU32:
if ((err = grub_efiemu_loadcore_load32 (efiemu_core, efiemu_core_size,
efiemu_segments)))
grub_efiemu_loadcore_unload ();
return err;
case GRUB_EFIEMU64:
if ((err = grub_efiemu_loadcore_load64 (efiemu_core, efiemu_core_size,
efiemu_segments)))
grub_efiemu_loadcore_unload ();
return err;
default:
return grub_error (GRUB_ERR_BAD_OS, "unknown EFI runtime");
}
}

345
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
/* This is an emulation of EFI runtime services.
This allows a more uniform boot on i386 machines.
As it emulates only runtime service it isn't able
to chainload EFI bootloader on non-EFI system. */
#include <grub/file.h>
#include <grub/err.h>
#include <grub/normal.h>
#include <grub/mm.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/efiemu/efiemu.h>
#include <grub/machine/efiemu.h>
#include <grub/command.h>
/* System table. Two version depending on mode */
grub_efi_system_table32_t *grub_efiemu_system_table32 = 0;
grub_efi_system_table64_t *grub_efiemu_system_table64 = 0;
/* Modules may need to execute some actions after memory allocation happens */
static struct grub_efiemu_prepare_hook *efiemu_prepare_hooks = 0;
/* Linked list of configuration tables */
static struct grub_efiemu_configuration_table *efiemu_config_tables = 0;
/* Free all allocated space */
grub_err_t
grub_efiemu_unload (void)
{
struct grub_efiemu_configuration_table *cur, *d;
struct grub_efiemu_prepare_hook *curhook, *d2;
grub_efiemu_loadcore_unload ();
grub_efiemu_mm_unload ();
for (cur = efiemu_config_tables; cur;)
{
d = cur->next;
if (cur->unload)
cur->unload (cur->data);
grub_free (cur);
cur = d;
}
efiemu_config_tables = 0;
for (curhook = efiemu_prepare_hooks; curhook;)
{
d2 = curhook->next;
if (curhook->unload)
curhook->unload (curhook->data);
grub_free (curhook);
curhook = d2;
}
efiemu_prepare_hooks = 0;
return GRUB_ERR_NONE;
}
/* Remove previously registered table from the list */
grub_err_t
grub_efiemu_unregister_configuration_table (grub_efi_guid_t guid)
{
struct grub_efiemu_configuration_table *cur, *prev;
/* Special treating if head is to remove */
while (efiemu_config_tables
&& !grub_memcmp (&(efiemu_config_tables->guid), &guid, sizeof (guid)))
{
if (efiemu_config_tables->unload)
efiemu_config_tables->unload (efiemu_config_tables->data);
cur = efiemu_config_tables->next;
grub_free (efiemu_config_tables);
efiemu_config_tables = cur;
}
if (!efiemu_config_tables)
return GRUB_ERR_NONE;
/* Remove from chain */
for (prev = efiemu_config_tables, cur = prev->next; cur;)
if (grub_memcmp (&(cur->guid), &guid, sizeof (guid)) == 0)
{
if (cur->unload)
cur->unload (cur->data);
prev->next = cur->next;
grub_free (cur);
cur = prev->next;
}
else
{
prev = cur;
cur = cur->next;
}
return GRUB_ERR_NONE;
}
grub_err_t
grub_efiemu_register_prepare_hook (grub_err_t (*hook) (void *data),
void (*unload) (void *data),
void *data)
{
struct grub_efiemu_prepare_hook *nhook;
if (! hook)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "you must supply the hook");
nhook = (struct grub_efiemu_prepare_hook *) grub_malloc (sizeof (*nhook));
if (! nhook)
return grub_error (GRUB_ERR_OUT_OF_MEMORY, "couldn't prepare hook");
nhook->hook = hook;
nhook->unload = unload;
nhook->data = data;
nhook->next = efiemu_prepare_hooks;
efiemu_prepare_hooks = nhook;
return GRUB_ERR_NONE;
}
/* Register a configuration table either supplying the address directly
or with a hook
*/
grub_err_t
grub_efiemu_register_configuration_table (grub_efi_guid_t guid,
void * (*get_table) (void *data),
void (*unload) (void *data),
void *data)
{
struct grub_efiemu_configuration_table *tbl;
grub_err_t err;
if (! get_table && ! data)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"you must set at least get_table or data");
if ((err = grub_efiemu_unregister_configuration_table (guid)))
return err;
tbl = (struct grub_efiemu_configuration_table *) grub_malloc (sizeof (*tbl));
if (! tbl)
return grub_error (GRUB_ERR_OUT_OF_MEMORY, "couldn't register table");
tbl->guid = guid;
tbl->get_table = get_table;
tbl->unload = unload;
tbl->data = data;
tbl->next = efiemu_config_tables;
efiemu_config_tables = tbl;
return GRUB_ERR_NONE;
}
static grub_err_t
grub_cmd_efiemu_unload (grub_command_t cmd __attribute__ ((unused)),
int argc __attribute__ ((unused)),
char *args[] __attribute__ ((unused)))
{
return grub_efiemu_unload ();
}
static grub_err_t
grub_cmd_efiemu_prepare (grub_command_t cmd __attribute__ ((unused)),
int argc __attribute__ ((unused)),
char *args[] __attribute__ ((unused)))
{
return grub_efiemu_prepare ();
}
int
grub_efiemu_exit_boot_services (grub_efi_uintn_t map_key
__attribute__ ((unused)))
{
/* Nothing to do here yet */
return 1;
}
int
grub_efiemu_finish_boot_services (void)
{
/* Nothing to do here yet */
return 1;
}
/* Load the runtime from the file FILENAME. */
static grub_err_t
grub_efiemu_load_file (const char *filename)
{
grub_file_t file;
grub_err_t err;
file = grub_file_open (filename);
if (! file)
return 0;
err = grub_efiemu_mm_init ();
if (err)
{
grub_file_close (file);
grub_efiemu_unload ();
return grub_error (grub_errno, "Couldn't init memory management");
}
grub_dprintf ("efiemu", "mm inited\n");
err = grub_efiemu_loadcore_init (file);
if (err)
{
grub_file_close (file);
grub_efiemu_unload ();
return err;
}
grub_file_close (file);
/* For configuration tables entry in system table. */
grub_efiemu_request_symbols (1);
return GRUB_ERR_NONE;
}
grub_err_t
grub_efiemu_autocore (void)
{
const char *prefix;
char *filename;
char *suffix;
grub_err_t err;
if (grub_efiemu_sizeof_uintn_t () != 0)
return GRUB_ERR_NONE;
prefix = grub_env_get ("prefix");
if (! prefix)
return grub_error (GRUB_ERR_FILE_NOT_FOUND,
"couldn't find efiemu core because prefix "
"isn't set");
suffix = grub_efiemu_get_default_core_name ();
filename = grub_malloc (grub_strlen (prefix) + grub_strlen (suffix) + 2);
if (! filename)
return grub_error (GRUB_ERR_OUT_OF_MEMORY,
"couldn't allocate temporary space");
grub_sprintf (filename, "%s/%s", prefix, suffix);
err = grub_efiemu_load_file (filename);
grub_free (filename);
if (err)
return err;
#ifndef GRUB_UTIL
err = grub_machine_efiemu_init_tables ();
if (err)
return err;
#endif
return GRUB_ERR_NONE;
}
grub_err_t
grub_efiemu_prepare (void)
{
grub_err_t err;
grub_dprintf ("efiemu", "Preparing %d-bit efiemu\n",
8 * grub_efiemu_sizeof_uintn_t ());
err = grub_efiemu_autocore ();
/* Create NVRAM if not yet done. */
grub_efiemu_pnvram ();
if (grub_efiemu_sizeof_uintn_t () == 4)
return grub_efiemu_prepare32 (efiemu_prepare_hooks, efiemu_config_tables);
else
return grub_efiemu_prepare64 (efiemu_prepare_hooks, efiemu_config_tables);
}
static grub_err_t
grub_cmd_efiemu_load (grub_command_t cmd __attribute__ ((unused)),
int argc, char *args[])
{
grub_err_t err;
grub_efiemu_unload ();
if (argc != 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "filename required");
err = grub_efiemu_load_file (args[0]);
if (err)
return err;
#ifndef GRUB_UTIL
err = grub_machine_efiemu_init_tables ();
if (err)
return err;
#endif
return GRUB_ERR_NONE;
}
static grub_command_t cmd_loadcore, cmd_prepare, cmd_unload;
void
grub_efiemu_pnvram_cmd_register (void);
GRUB_MOD_INIT(efiemu)
{
(void) mod; /* To stop warning. */
cmd_loadcore = grub_register_command ("efiemu_loadcore",
grub_cmd_efiemu_load,
"efiemu_loadcore FILE",
"Load and initialize EFI emulator");
cmd_prepare = grub_register_command ("efiemu_prepare",
grub_cmd_efiemu_prepare,
"efiemu_prepare",
"Finalize loading of EFI emulator");
cmd_unload = grub_register_command ("efiemu_unload", grub_cmd_efiemu_unload,
"efiemu_unload",
"Unload EFI emulator");
grub_efiemu_pnvram_cmd_register ();
}
GRUB_MOD_FINI(efiemu)
{
grub_unregister_command (cmd_loadcore);
grub_unregister_command (cmd_prepare);
grub_unregister_command (cmd_unload);
grub_efiemu_pnvram_cmd_unregister ();
}

635
efiemu/mm.c Normal file
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/* Memory management for efiemu */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
/*
To keep efiemu runtime contiguous this mm is special.
It uses deffered allocation.
In the first stage you may request memory with grub_efiemu_request_memalign
It will give you a handle with which in the second phase you can access your
memory with grub_efiemu_mm_obtain_request (handle). It's guaranteed that
subsequent calls with the same handle return the same result. You can't request any additional memory once you're in the second phase
*/
#include <grub/err.h>
#include <grub/normal.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/machine/memory.h>
#include <grub/efiemu/efiemu.h>
struct grub_efiemu_memrequest
{
struct grub_efiemu_memrequest *next;
grub_efi_memory_type_t type;
grub_size_t size;
grub_size_t align_overhead;
int handle;
void *val;
};
/* Linked list of requested memory. */
static struct grub_efiemu_memrequest *memrequests = 0;
/* Memory map. */
static grub_efi_memory_descriptor_t *efiemu_mmap = 0;
/* Pointer to allocated memory */
static void *resident_memory = 0;
/* Size of requested memory per type */
static grub_size_t requested_memory[GRUB_EFI_MAX_MEMORY_TYPE];
/* How many slots is allocated for memory_map and how many are already used */
static int mmap_reserved_size = 0, mmap_num = 0;
/* Add a memory region to map*/
static grub_err_t
grub_efiemu_add_to_mmap (grub_uint64_t start, grub_uint64_t size,
grub_efi_memory_type_t type)
{
grub_uint64_t page_start, npages;
/* Extend map if necessary*/
if (mmap_num >= mmap_reserved_size)
{
efiemu_mmap = (grub_efi_memory_descriptor_t *)
grub_realloc (efiemu_mmap, (++mmap_reserved_size)
* sizeof (grub_efi_memory_descriptor_t));
if (!efiemu_mmap)
return grub_error (GRUB_ERR_OUT_OF_MEMORY,
"Not enough space for memory map");
}
/* Fill slot*/
page_start = start - (start % GRUB_EFIEMU_PAGESIZE);
npages = (size + (start % GRUB_EFIEMU_PAGESIZE) + GRUB_EFIEMU_PAGESIZE - 1)
/ GRUB_EFIEMU_PAGESIZE;
efiemu_mmap[mmap_num].physical_start = page_start;
efiemu_mmap[mmap_num].virtual_start = page_start;
efiemu_mmap[mmap_num].num_pages = npages;
efiemu_mmap[mmap_num].type = type;
mmap_num++;
return GRUB_ERR_NONE;
}
/* Request a resident memory of type TYPE of size SIZE aligned at ALIGN
ALIGN must be a divisor of page size (if it's a divisor of 4096
it should be ok on all platforms)
*/
int
grub_efiemu_request_memalign (grub_size_t align, grub_size_t size,
grub_efi_memory_type_t type)
{
grub_size_t align_overhead;
struct grub_efiemu_memrequest *ret, *cur, *prev;
/* Check that the request is correct */
if (type >= GRUB_EFI_MAX_MEMORY_TYPE || type <= GRUB_EFI_LOADER_CODE)
return -2;
/* Add new size to requested size */
align_overhead = align - (requested_memory[type]%align);
if (align_overhead == align)
align_overhead = 0;
requested_memory[type] += align_overhead + size;
/* Remember the request */
ret = grub_malloc (sizeof (*ret));
if (!ret)
return -1;
ret->type = type;
ret->size = size;
ret->align_overhead = align_overhead;
ret->val = 0;
ret->next = 0;
prev = 0;
/* Add request to the end of the chain.
It should be at the end because otherwise alignment isn't guaranteed */
for (cur = memrequests; cur; prev = cur, cur = cur->next);
if (prev)
{
ret->handle = prev->handle + 1;
prev->next = ret;
}
else
{
ret->handle = 1; /* Avoid 0 handle*/
memrequests = ret;
}
return ret->handle;
}
/* Really allocate the memory */
static grub_err_t
efiemu_alloc_requests (void)
{
grub_size_t align_overhead = 0;
grub_uint8_t *curptr, *typestart;
struct grub_efiemu_memrequest *cur;
grub_size_t total_alloc = 0;
unsigned i;
/* Order of memory regions */
grub_efi_memory_type_t reqorder[] =
{
/* First come regions usable by OS*/
GRUB_EFI_LOADER_CODE,
GRUB_EFI_LOADER_DATA,
GRUB_EFI_BOOT_SERVICES_CODE,
GRUB_EFI_BOOT_SERVICES_DATA,
GRUB_EFI_CONVENTIONAL_MEMORY,
GRUB_EFI_ACPI_RECLAIM_MEMORY,
/* Then memory used by runtime */
/* This way all our regions are in a single block */
GRUB_EFI_RUNTIME_SERVICES_CODE,
GRUB_EFI_RUNTIME_SERVICES_DATA,
GRUB_EFI_ACPI_MEMORY_NVS,
/* And then unavailable memory types. This is more for a completeness.
You should double think before allocating memory of any of these types
*/
GRUB_EFI_UNUSABLE_MEMORY,
GRUB_EFI_MEMORY_MAPPED_IO,
GRUB_EFI_MEMORY_MAPPED_IO_PORT_SPACE,
GRUB_EFI_PAL_CODE
};
/* Compute total memory needed */
for (i = 0; i < sizeof (reqorder) / sizeof (reqorder[0]); i++)
{
align_overhead = GRUB_EFIEMU_PAGESIZE
- (requested_memory[reqorder[i]] % GRUB_EFIEMU_PAGESIZE);
if (align_overhead == GRUB_EFIEMU_PAGESIZE)
align_overhead = 0;
total_alloc += requested_memory[reqorder[i]] + align_overhead;
}
/* Allocate the whole memory in one block */
resident_memory = grub_memalign (GRUB_EFIEMU_PAGESIZE, total_alloc);
if (!resident_memory)
return grub_error (GRUB_ERR_OUT_OF_MEMORY,
"couldn't allocate resident memory");
/* Split the memory into blocks by type */
curptr = resident_memory;
for (i = 0; i < sizeof (reqorder) / sizeof (reqorder[0]); i++)
{
if (!requested_memory[reqorder[i]])
continue;
typestart = curptr;
/* Write pointers to requests */
for (cur = memrequests; cur; cur = cur->next)
if (cur->type == reqorder[i])
{
curptr = ((grub_uint8_t *)curptr) + cur->align_overhead;
cur->val = curptr;
curptr = ((grub_uint8_t *)curptr) + cur->size;
}
/* Ensure that the regions are page-aligned */
align_overhead = GRUB_EFIEMU_PAGESIZE
- (requested_memory[reqorder[i]] % GRUB_EFIEMU_PAGESIZE);
if (align_overhead == GRUB_EFIEMU_PAGESIZE)
align_overhead = 0;
curptr = ((grub_uint8_t *)curptr) + align_overhead;
/* Add the region to memory map */
grub_efiemu_add_to_mmap (PTR_TO_UINT64 (typestart),
curptr - typestart, reqorder[i]);
}
return GRUB_ERR_NONE;
}
/* Get a pointer to requested memory from handle */
void *
grub_efiemu_mm_obtain_request (int handle)
{
struct grub_efiemu_memrequest *cur;
for (cur = memrequests; cur; cur = cur->next)
if (cur->handle == handle)
return cur->val;
return 0;
}
/* Get type of requested memory by handle */
grub_efi_memory_type_t
grub_efiemu_mm_get_type (int handle)
{
struct grub_efiemu_memrequest *cur;
for (cur = memrequests; cur; cur = cur->next)
if (cur->handle == handle)
return cur->type;
return 0;
}
/* Free a request */
void
grub_efiemu_mm_return_request (int handle)
{
struct grub_efiemu_memrequest *cur, *prev;
/* Remove head if necessary */
while (memrequests && memrequests->handle == handle)
{
cur = memrequests->next;
grub_free (memrequests);
memrequests = cur;
}
if (!memrequests)
return;
/* Remove request from a middle of chain*/
for (prev = memrequests, cur = prev->next; cur;)
if (cur->handle == handle)
{
prev->next = cur->next;
grub_free (cur);
cur = prev->next;
}
else
{
prev = cur;
cur = prev->next;
}
}
/* Reserve space for memory map */
static grub_err_t
grub_efiemu_mmap_init (void)
{
auto int NESTED_FUNC_ATTR bounds_hook (grub_uint64_t, grub_uint64_t,
grub_uint32_t);
int NESTED_FUNC_ATTR bounds_hook (grub_uint64_t addr __attribute__ ((unused)),
grub_uint64_t size __attribute__ ((unused)),
grub_uint32_t type __attribute__ ((unused)))
{
mmap_reserved_size++;
return 0;
}
// the place for memory used by efiemu itself
mmap_reserved_size = GRUB_EFI_MAX_MEMORY_TYPE + 1;
#ifndef GRUB_UTIL
grub_machine_mmap_iterate (bounds_hook);
#endif
return GRUB_ERR_NONE;
}
/* This is a drop-in replacement of grub_efi_get_memory_map */
/* Get the memory map as defined in the EFI spec. Return 1 if successful,
return 0 if partial, or return -1 if an error occurs. */
int
grub_efiemu_get_memory_map (grub_efi_uintn_t *memory_map_size,
grub_efi_memory_descriptor_t *memory_map,
grub_efi_uintn_t *map_key,
grub_efi_uintn_t *descriptor_size,
grub_efi_uint32_t *descriptor_version)
{
if (!efiemu_mmap)
{
grub_error (GRUB_ERR_INVALID_COMMAND,
"you need to first launch efiemu_prepare");
return -1;
}
if (*memory_map_size < mmap_num * sizeof (grub_efi_memory_descriptor_t))
{
*memory_map_size = mmap_num * sizeof (grub_efi_memory_descriptor_t);
return 0;
}
*memory_map_size = mmap_num * sizeof (grub_efi_memory_descriptor_t);
grub_memcpy (memory_map, efiemu_mmap, *memory_map_size);
if (descriptor_size)
*descriptor_size = sizeof (grub_efi_memory_descriptor_t);
if (descriptor_version)
*descriptor_version = 1;
if (map_key)
*map_key = 0;
return 1;
}
/* Free everything */
grub_err_t
grub_efiemu_mm_unload (void)
{
struct grub_efiemu_memrequest *cur, *d;
for (cur = memrequests; cur;)
{
d = cur->next;
grub_free (cur);
cur = d;
}
memrequests = 0;
grub_memset (&requested_memory, 0, sizeof (requested_memory));
grub_free (resident_memory);
resident_memory = 0;
grub_free (efiemu_mmap);
efiemu_mmap = 0;
mmap_reserved_size = mmap_num = 0;
return GRUB_ERR_NONE;
}
/* This function should be called before doing any requests */
grub_err_t
grub_efiemu_mm_init (void)
{
grub_err_t err;
err = grub_efiemu_mm_unload ();
if (err)
return err;
grub_efiemu_mmap_init ();
return GRUB_ERR_NONE;
}
/* Copy host memory map */
static grub_err_t
grub_efiemu_mmap_fill (void)
{
auto int NESTED_FUNC_ATTR fill_hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
int NESTED_FUNC_ATTR fill_hook (grub_uint64_t addr,
grub_uint64_t size,
grub_uint32_t type)
{
switch (type)
{
case GRUB_MACHINE_MEMORY_AVAILABLE:
return grub_efiemu_add_to_mmap (addr, size,
GRUB_EFI_CONVENTIONAL_MEMORY);
#ifdef GRUB_MACHINE_MEMORY_ACPI
case GRUB_MACHINE_MEMORY_ACPI:
return grub_efiemu_add_to_mmap (addr, size,
GRUB_EFI_ACPI_RECLAIM_MEMORY);
#endif
#ifdef GRUB_MACHINE_MEMORY_NVS
case GRUB_MACHINE_MEMORY_NVS:
return grub_efiemu_add_to_mmap (addr, size,
GRUB_EFI_ACPI_MEMORY_NVS);
#endif
default:
grub_printf ("Unknown memory type %d. Marking as unusable\n", type);
case GRUB_MACHINE_MEMORY_RESERVED:
return grub_efiemu_add_to_mmap (addr, size,
GRUB_EFI_UNUSABLE_MEMORY);
}
}
#ifndef GRUB_UTIL
grub_machine_mmap_iterate (fill_hook);
#endif
return GRUB_ERR_NONE;
}
grub_err_t
grub_efiemu_mmap_iterate (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t,
grub_uint64_t,
grub_uint32_t))
{
unsigned i;
for (i = 0; i < (unsigned) mmap_num; i++)
switch (efiemu_mmap[i].type)
{
case GRUB_EFI_RUNTIME_SERVICES_CODE:
hook (efiemu_mmap[i].physical_start, efiemu_mmap[i].num_pages * 4096,
GRUB_EFIEMU_MEMORY_CODE);
break;
case GRUB_EFI_RESERVED_MEMORY_TYPE:
case GRUB_EFI_RUNTIME_SERVICES_DATA:
case GRUB_EFI_UNUSABLE_MEMORY:
case GRUB_EFI_MEMORY_MAPPED_IO:
case GRUB_EFI_MEMORY_MAPPED_IO_PORT_SPACE:
case GRUB_EFI_PAL_CODE:
case GRUB_EFI_MAX_MEMORY_TYPE:
hook (efiemu_mmap[i].physical_start, efiemu_mmap[i].num_pages * 4096,
GRUB_EFIEMU_MEMORY_RESERVED);
break;
case GRUB_EFI_LOADER_CODE:
case GRUB_EFI_LOADER_DATA:
case GRUB_EFI_BOOT_SERVICES_CODE:
case GRUB_EFI_BOOT_SERVICES_DATA:
case GRUB_EFI_CONVENTIONAL_MEMORY:
hook (efiemu_mmap[i].physical_start, efiemu_mmap[i].num_pages * 4096,
GRUB_EFIEMU_MEMORY_AVAILABLE);
break;
case GRUB_EFI_ACPI_RECLAIM_MEMORY:
hook (efiemu_mmap[i].physical_start, efiemu_mmap[i].num_pages * 4096,
GRUB_EFIEMU_MEMORY_ACPI);
break;
case GRUB_EFI_ACPI_MEMORY_NVS:
hook (efiemu_mmap[i].physical_start, efiemu_mmap[i].num_pages * 4096,
GRUB_EFIEMU_MEMORY_NVS);
break;
}
return 0;
}
/* This function resolves overlapping regions and sorts the memory map
It uses scanline (sweeping) algorithm
*/
static grub_err_t
grub_efiemu_mmap_sort_and_uniq (void)
{
/* If same page is used by multiple types it's resolved
according to priority
0 - free memory
1 - memory immediately usable after ExitBootServices
2 - memory usable after loading ACPI tables
3 - efiemu memory
4 - unusable memory
*/
int priority[GRUB_EFI_MAX_MEMORY_TYPE] =
{
[GRUB_EFI_RESERVED_MEMORY_TYPE] = 4,
[GRUB_EFI_LOADER_CODE] = 1,
[GRUB_EFI_LOADER_DATA] = 1,
[GRUB_EFI_BOOT_SERVICES_CODE] = 1,
[GRUB_EFI_BOOT_SERVICES_DATA] = 1,
[GRUB_EFI_RUNTIME_SERVICES_CODE] = 3,
[GRUB_EFI_RUNTIME_SERVICES_DATA] = 3,
[GRUB_EFI_CONVENTIONAL_MEMORY] = 0,
[GRUB_EFI_UNUSABLE_MEMORY] = 4,
[GRUB_EFI_ACPI_RECLAIM_MEMORY] = 2,
[GRUB_EFI_ACPI_MEMORY_NVS] = 3,
[GRUB_EFI_MEMORY_MAPPED_IO] = 4,
[GRUB_EFI_MEMORY_MAPPED_IO_PORT_SPACE] = 4,
[GRUB_EFI_PAL_CODE] = 4
};
int i, j, k, done;
/* Scanline events */
struct grub_efiemu_mmap_scan
{
/* At which memory address*/
grub_uint64_t pos;
/* 0 = region starts, 1 = region ends */
int type;
/* Which type of memory region */
grub_efi_memory_type_t memtype;
};
struct grub_efiemu_mmap_scan *scanline_events;
struct grub_efiemu_mmap_scan t;
/* Previous scanline event */
grub_uint64_t lastaddr;
int lasttype;
/* Current scanline event */
int curtype;
/* how many regions of given type overlap at current location */
int present[GRUB_EFI_MAX_MEMORY_TYPE];
/* Here is stored the resulting memory map*/
grub_efi_memory_descriptor_t *result;
/* Initialize variables*/
grub_memset (present, 0, sizeof (int) * GRUB_EFI_MAX_MEMORY_TYPE);
scanline_events = (struct grub_efiemu_mmap_scan *)
grub_malloc (sizeof (struct grub_efiemu_mmap_scan) * 2 * mmap_num);
/* Number of chunks can't increase more than by factor of 2 */
result = (grub_efi_memory_descriptor_t *)
grub_malloc (sizeof (grub_efi_memory_descriptor_t) * 2 * mmap_num);
if (!result || !scanline_events)
{
grub_free (result);
grub_free (scanline_events);
return grub_error (GRUB_ERR_OUT_OF_MEMORY,
"couldn't allocate space for new memory map");
}
/* Register scanline events */
for (i = 0; i < mmap_num; i++)
{
scanline_events[2 * i].pos = efiemu_mmap[i].physical_start;
scanline_events[2 * i].type = 0;
scanline_events[2 * i].memtype = efiemu_mmap[i].type;
scanline_events[2 * i + 1].pos = efiemu_mmap[i].physical_start
+ efiemu_mmap[i].num_pages * GRUB_EFIEMU_PAGESIZE;
scanline_events[2 * i + 1].type = 1;
scanline_events[2 * i + 1].memtype = efiemu_mmap[i].type;
}
/* Primitive bubble sort. It has complexity O(n^2) but since we're
unlikely to have more than 100 chunks it's probably one of the
fastest for one purpose */
done = 1;
while (done)
{
done = 0;
for (i = 0; i < 2 * mmap_num - 1; i++)
if (scanline_events[i + 1].pos < scanline_events[i].pos)
{
t = scanline_events[i + 1];
scanline_events[i + 1] = scanline_events[i];
scanline_events[i] = t;
done = 1;
}
}
/* Pointer in resulting memory map */
j = 0;
lastaddr = scanline_events[0].pos;
lasttype = scanline_events[0].memtype;
for (i = 0; i < 2 * mmap_num; i++)
{
/* Process event */
if (scanline_events[i].type)
present[scanline_events[i].memtype]--;
else
present[scanline_events[i].memtype]++;
/* Determine current region type */
curtype = -1;
for (k = 0; k < GRUB_EFI_MAX_MEMORY_TYPE; k++)
if (present[k] && (curtype == -1 || priority[k] > priority[curtype]))
curtype = k;
/* Add memory region to resulting map if necessary */
if ((curtype == -1 || curtype != lasttype)
&& lastaddr != scanline_events[i].pos
&& lasttype != -1)
{
result[j].virtual_start = result[j].physical_start = lastaddr;
result[j].num_pages = (scanline_events[i].pos - lastaddr)
/ GRUB_EFIEMU_PAGESIZE;
result[j].type = lasttype;
/* We set runtime attribute on pages we need to be mapped */
result[j].attribute
= (lasttype == GRUB_EFI_RUNTIME_SERVICES_CODE
|| lasttype == GRUB_EFI_RUNTIME_SERVICES_DATA)
? GRUB_EFI_MEMORY_RUNTIME : 0;
grub_dprintf ("efiemu",
"mmap entry: type %d start 0x%llx 0x%llx pages\n",
result[j].type,
result[j].physical_start, result[j].num_pages);
j++;
}
/* Update last values if necessary */
if (curtype == -1 || curtype != lasttype)
{
lasttype = curtype;
lastaddr = scanline_events[i].pos;
}
}
grub_free (scanline_events);
/* Shrink resulting memory map to really used size and replace efiemu_mmap
by new value */
grub_free (efiemu_mmap);
efiemu_mmap = grub_realloc (result, j * sizeof (*result));
return GRUB_ERR_NONE;
}
/* This function is called to switch from first to second phase */
grub_err_t
grub_efiemu_mm_do_alloc (void)
{
grub_err_t err;
/* Preallocate mmap */
efiemu_mmap = (grub_efi_memory_descriptor_t *)
grub_malloc (mmap_reserved_size * sizeof (grub_efi_memory_descriptor_t));
if (!efiemu_mmap)
{
grub_efiemu_unload ();
return grub_error (GRUB_ERR_OUT_OF_MEMORY, "Couldn't initilaize mmap");
}
if ((err = efiemu_alloc_requests ()))
return err;
if ((err = grub_efiemu_mmap_fill ()))
return err;
return grub_efiemu_mmap_sort_and_uniq ();
}

402
efiemu/pnvram.c Normal file
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/* Export pnvram and some variables for runtime */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/file.h>
#include <grub/err.h>
#include <grub/normal.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/efiemu/efiemu.h>
#include <grub/efiemu/runtime.h>
#include <grub/extcmd.h>
/* Place for final location of variables */
static int nvram_handle = 0;
static int nvramsize_handle = 0;
static int high_monotonic_count_handle = 0;
static int timezone_handle = 0;
static int accuracy_handle = 0;
static int daylight_handle = 0;
/* Temporary place */
static grub_uint8_t *nvram;
static grub_size_t nvramsize;
static grub_uint32_t high_monotonic_count;
static grub_int16_t timezone;
static grub_uint8_t daylight;
static grub_uint32_t accuracy;
static const struct grub_arg_option options[] = {
{"size", 's', 0, "number of bytes to reserve for pseudo NVRAM", 0,
ARG_TYPE_INT},
{"high-monotonic-count", 'm', 0,
"Initial value of high monotonic count", 0, ARG_TYPE_INT},
{"timezone", 't', 0,
"Timezone, offset in minutes from GMT", 0, ARG_TYPE_INT},
{"accuracy", 'a', 0,
"Accuracy of clock, in 1e-12 units", 0, ARG_TYPE_INT},
{"daylight", 'd', 0,
"Daylight value, as per EFI specifications", 0, ARG_TYPE_INT},
{0, 0, 0, 0, 0, 0}
};
/* Parse signed value */
static int
grub_strtosl (char *arg, char **end, int base)
{
if (arg[0] == '-')
return -grub_strtoul (arg + 1, end, base);
return grub_strtoul (arg, end, base);
}
/* Export stuff for efiemu */
static grub_err_t
nvram_set (void * data __attribute__ ((unused)))
{
/* Take definitive pointers */
grub_uint8_t *nvram_def = grub_efiemu_mm_obtain_request (nvram_handle);
grub_uint32_t *nvramsize_def
= grub_efiemu_mm_obtain_request (nvramsize_handle);
grub_uint32_t *high_monotonic_count_def
= grub_efiemu_mm_obtain_request (high_monotonic_count_handle);
grub_int16_t *timezone_def
= grub_efiemu_mm_obtain_request (timezone_handle);
grub_uint8_t *daylight_def
= grub_efiemu_mm_obtain_request (daylight_handle);
grub_uint32_t *accuracy_def
= grub_efiemu_mm_obtain_request (accuracy_handle);
/* Copy to definitive loaction */
grub_dprintf ("efiemu", "preparing pnvram\n");
grub_memcpy (nvram_def, nvram, nvramsize);
*nvramsize_def = nvramsize;
*high_monotonic_count_def = high_monotonic_count;
*timezone_def = timezone;
*daylight_def = daylight;
*accuracy_def = accuracy;
/* Register symbols */
grub_efiemu_register_symbol ("efiemu_variables", nvram_handle, 0);
grub_efiemu_register_symbol ("efiemu_varsize", nvramsize_handle, 0);
grub_efiemu_register_symbol ("efiemu_high_monotonic_count",
high_monotonic_count_handle, 0);
grub_efiemu_register_symbol ("efiemu_time_zone", timezone_handle, 0);
grub_efiemu_register_symbol ("efiemu_time_daylight", daylight_handle, 0);
grub_efiemu_register_symbol ("efiemu_time_accuracy",
accuracy_handle, 0);
return GRUB_ERR_NONE;
}
static void
nvram_unload (void * data __attribute__ ((unused)))
{
grub_efiemu_mm_return_request (nvram_handle);
grub_efiemu_mm_return_request (nvramsize_handle);
grub_efiemu_mm_return_request (high_monotonic_count_handle);
grub_efiemu_mm_return_request (timezone_handle);
grub_efiemu_mm_return_request (accuracy_handle);
grub_efiemu_mm_return_request (daylight_handle);
grub_free (nvram);
nvram = 0;
}
/* Load the variables file It's in format
guid1:attr1:name1:data1;
guid2:attr2:name2:data2;
...
Where all fields are in hex
*/
static grub_err_t
read_pnvram (char *filename)
{
char *buf, *ptr, *ptr2;
grub_file_t file;
grub_size_t size;
grub_uint8_t *nvramptr = nvram;
struct efi_variable *efivar;
grub_size_t guidlen, datalen;
unsigned i, j;
file = grub_file_open (filename);
if (!file)
return grub_error (GRUB_ERR_BAD_OS, "couldn't read pnvram");
size = grub_file_size (file);
buf = grub_malloc (size + 1);
if (!buf)
return grub_error (GRUB_ERR_OUT_OF_MEMORY, "couldn't read pnvram");
if (grub_file_read (file, buf, size) != (grub_ssize_t) size)
return grub_error (GRUB_ERR_BAD_OS, "couldn't read pnvram");
buf[size] = 0;
grub_file_close (file);
for (ptr = buf; *ptr; )
{
if (grub_isspace (*ptr))
{
ptr++;
continue;
}
efivar = (struct efi_variable *) nvramptr;
if (nvramptr - nvram + sizeof (struct efi_variable) > nvramsize)
return grub_error (GRUB_ERR_OUT_OF_MEMORY,
"file is too large for reserved variable space");
nvramptr += sizeof (struct efi_variable);
/* look ahow long guid field is*/
guidlen = 0;
for (ptr2 = ptr; (grub_isspace (*ptr2)
|| (*ptr2 >= '0' && *ptr2 <= '9')
|| (*ptr2 >= 'a' && *ptr2 <= 'f')
|| (*ptr2 >= 'A' && *ptr2 <= 'F'));
ptr2++)
if (!grub_isspace (*ptr2))
guidlen++;
guidlen /= 2;
/* Read guid */
if (guidlen != sizeof (efivar->guid))
{
grub_free (buf);
return grub_error (GRUB_ERR_BAD_OS, "can't parse %s", filename);
}
for (i = 0; i < 2 * sizeof (efivar->guid); i++)
{
int hex = 0;
while (grub_isspace (*ptr))
ptr++;
if (*ptr >= '0' && *ptr <= '9')
hex = *ptr - '0';
if (*ptr >= 'a' && *ptr <= 'f')
hex = *ptr - 'a' + 10;
if (*ptr >= 'A' && *ptr <= 'F')
hex = *ptr - 'A' + 10;
if (i%2 == 0)
((grub_uint8_t *)&(efivar->guid))[i/2] = hex << 4;
else
((grub_uint8_t *)&(efivar->guid))[i/2] |= hex;
ptr++;
}
while (grub_isspace (*ptr))
ptr++;
if (*ptr != ':')
{
grub_dprintf ("efiemu", "Not colon\n");
grub_free (buf);
return grub_error (GRUB_ERR_BAD_OS, "can't parse %s", filename);
}
ptr++;
while (grub_isspace (*ptr))
ptr++;
/* Attributes can be just parsed by existing functions */
efivar->attributes = grub_strtoul (ptr, &ptr, 16);
while (grub_isspace (*ptr))
ptr++;
if (*ptr != ':')
{
grub_dprintf ("efiemu", "Not colon\n");
grub_free (buf);
return grub_error (GRUB_ERR_BAD_OS, "can't parse %s", filename);
}
ptr++;
while (grub_isspace (*ptr))
ptr++;
/* Read name and value */
for (j = 0; j < 2; j++)
{
/* Look the length */
datalen = 0;
for (ptr2 = ptr; *ptr2 && (grub_isspace (*ptr2)
|| (*ptr2 >= '0' && *ptr2 <= '9')
|| (*ptr2 >= 'a' && *ptr2 <= 'f')
|| (*ptr2 >= 'A' && *ptr2 <= 'F'));
ptr2++)
if (!grub_isspace (*ptr2))
datalen++;
datalen /= 2;
if (nvramptr - nvram + datalen > nvramsize)
{
grub_free (buf);
return grub_error (GRUB_ERR_OUT_OF_MEMORY,
"file is too large for reserved "
" variable space");
}
for (i = 0; i < 2 * datalen; i++)
{
int hex = 0;
while (grub_isspace (*ptr))
ptr++;
if (*ptr >= '0' && *ptr <= '9')
hex = *ptr - '0';
if (*ptr >= 'a' && *ptr <= 'f')
hex = *ptr - 'a' + 10;
if (*ptr >= 'A' && *ptr <= 'F')
hex = *ptr - 'A' + 10;
if (i%2 == 0)
nvramptr[i/2] = hex << 4;
else
nvramptr[i/2] |= hex;
ptr++;
}
nvramptr += datalen;
while (grub_isspace (*ptr))
ptr++;
if (*ptr != (j ? ';' : ':'))
{
grub_free (buf);
grub_dprintf ("efiemu", j?"Not semicolon\n":"Not colon\n");
return grub_error (GRUB_ERR_BAD_OS, "can't parse %s", filename);
}
if (j)
efivar->size = datalen;
else
efivar->namelen = datalen;
ptr++;
}
}
grub_free (buf);
return GRUB_ERR_NONE;
}
static grub_err_t
grub_efiemu_make_nvram (void)
{
grub_err_t err;
err = grub_efiemu_autocore ();
if (err)
{
grub_free (nvram);
return err;
}
err = grub_efiemu_register_prepare_hook (nvram_set, nvram_unload, 0);
if (err)
{
grub_free (nvram);
return err;
}
nvram_handle
= grub_efiemu_request_memalign (1, nvramsize,
GRUB_EFI_RUNTIME_SERVICES_DATA);
nvramsize_handle
= grub_efiemu_request_memalign (1, sizeof (grub_uint32_t),
GRUB_EFI_RUNTIME_SERVICES_DATA);
high_monotonic_count_handle
= grub_efiemu_request_memalign (1, sizeof (grub_uint32_t),
GRUB_EFI_RUNTIME_SERVICES_DATA);
timezone_handle
= grub_efiemu_request_memalign (1, sizeof (grub_uint16_t),
GRUB_EFI_RUNTIME_SERVICES_DATA);
daylight_handle
= grub_efiemu_request_memalign (1, sizeof (grub_uint8_t),
GRUB_EFI_RUNTIME_SERVICES_DATA);
accuracy_handle
= grub_efiemu_request_memalign (1, sizeof (grub_uint32_t),
GRUB_EFI_RUNTIME_SERVICES_DATA);
grub_efiemu_request_symbols (6);
return GRUB_ERR_NONE;
}
grub_err_t
grub_efiemu_pnvram (void)
{
if (nvram)
return GRUB_ERR_NONE;
nvramsize = 2048;
high_monotonic_count = 1;
timezone = GRUB_EFI_UNSPECIFIED_TIMEZONE;
accuracy = 50000000;
daylight = 0;
nvram = grub_malloc (nvramsize);
if (!nvram)
return grub_error (GRUB_ERR_OUT_OF_MEMORY,
"Couldn't allocate space for temporary pnvram storage");
grub_memset (nvram, 0, nvramsize);
return grub_efiemu_make_nvram ();
}
static grub_err_t
grub_cmd_efiemu_pnvram (struct grub_extcmd *cmd,
int argc, char **args)
{
struct grub_arg_list *state = cmd->state;
grub_err_t err;
if (argc > 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "only one argument expected");
nvramsize = state[0].set ? grub_strtoul (state[0].arg, 0, 0) : 2048;
high_monotonic_count = state[1].set ? grub_strtoul (state[1].arg, 0, 0) : 1;
timezone = state[2].set ? grub_strtosl (state[2].arg, 0, 0)
: GRUB_EFI_UNSPECIFIED_TIMEZONE;
accuracy = state[3].set ? grub_strtoul (state[3].arg, 0, 0) : 50000000;
daylight = state[4].set ? grub_strtoul (state[4].arg, 0, 0) : 0;
nvram = grub_malloc (nvramsize);
if (!nvram)
return grub_error (GRUB_ERR_OUT_OF_MEMORY,
"Couldn't allocate space for temporary pnvram storage");
grub_memset (nvram, 0, nvramsize);
if (argc == 1 && (err = read_pnvram (args[0])))
{
grub_free (nvram);
return err;
}
return grub_efiemu_make_nvram ();
}
static grub_extcmd_t cmd;
void grub_efiemu_pnvram_cmd_register (void);
void grub_efiemu_pnvram_cmd_unregister (void);
void
grub_efiemu_pnvram_cmd_register (void)
{
cmd = grub_register_extcmd ("efiemu_pnvram", grub_cmd_efiemu_pnvram,
GRUB_COMMAND_FLAG_BOTH,
"efiemu_pnvram [FILENAME]",
"Initialise pseudo-NVRAM and load variables "
"from FILE",
options);
}
void
grub_efiemu_pnvram_cmd_unregister (void)
{
grub_unregister_extcmd (cmd);
}

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/* Prepare efiemu. E.g. allocate memory, load the runtime
to appropriate place, etc */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/err.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/efiemu/efiemu.h>
#include <grub/lib/crc.h>
grub_err_t
SUFFIX (grub_efiemu_prepare) (struct grub_efiemu_prepare_hook *prepare_hooks,
struct grub_efiemu_configuration_table
*config_tables)
{
grub_err_t err;
int conftable_handle;
struct grub_efiemu_configuration_table *cur;
struct grub_efiemu_prepare_hook *curhook;
int cntconftables = 0;
TYPE (grub_efiemu_configuration_table) *conftables = 0;
TYPE (grub_efiemu_runtime_services) *runtime_services;
int i;
int handle;
grub_off_t off;
grub_dprintf ("efiemu", "Preparing EfiEmu\n");
/* Request space for the list of configuration tables */
for (cur = config_tables; cur; cur = cur->next)
cntconftables++;
conftable_handle
= grub_efiemu_request_memalign (GRUB_EFIEMU_PAGESIZE,
cntconftables * sizeof (*conftables),
GRUB_EFI_RUNTIME_SERVICES_DATA);
/* Switch from phase 1 (counting) to phase 2 (real job) */
grub_efiemu_alloc_syms ();
grub_efiemu_mm_do_alloc ();
grub_efiemu_system_table32 = 0;
grub_efiemu_system_table64 = 0;
/* Execute hooks */
for (curhook = prepare_hooks; curhook; curhook = curhook->next)
curhook->hook (curhook->data);
/* Move runtime to its due place */
if ((err = grub_efiemu_loadcore_load ()))
{
grub_efiemu_unload ();
return err;
}
if ((err = grub_efiemu_resolve_symbol ("efiemu_system_table",
&handle, &off)))
{
grub_efiemu_unload ();
return err;
}
SUFFIX (grub_efiemu_system_table)
= (TYPE (grub_efi_system_table) *)
((grub_uint8_t *)grub_efiemu_mm_obtain_request (handle) + off);
/* compute CRC32 of runtime_services */
if ((err = grub_efiemu_resolve_symbol ("efiemu_runtime_services",
&handle, &off)))
return err;
runtime_services = (TYPE (grub_efiemu_runtime_services) *)
((grub_uint8_t *)grub_efiemu_mm_obtain_request (handle) + off);
runtime_services->hdr.crc32 = 0;
runtime_services->hdr.crc32 = grub_getcrc32
(0, runtime_services, runtime_services->hdr.header_size);
/* Put pointer to the list of configuration tables in system table */
grub_efiemu_write_value
(&(SUFFIX (grub_efiemu_system_table)->configuration_table), 0,
conftable_handle, 0, 1,
sizeof (SUFFIX (grub_efiemu_system_table)->configuration_table));
SUFFIX(grub_efiemu_system_table)->num_table_entries = cntconftables;
/* Fill the list of configuration tables */
conftables = (TYPE (grub_efiemu_configuration_table) *)
grub_efiemu_mm_obtain_request (conftable_handle);
i = 0;
for (cur = config_tables; cur; cur = cur->next, i++)
{
grub_memcpy (&(conftables[i].vendor_guid), &(cur->guid),
sizeof (cur->guid));
if (cur->get_table)
conftables[i].vendor_table
= PTR_TO_UINT64 (cur->get_table (cur->data));
else
conftables[i].vendor_table = PTR_TO_UINT64 (cur->data);
}
/* compute CRC32 of system table */
SUFFIX (grub_efiemu_system_table)->hdr.crc32 = 0;
SUFFIX (grub_efiemu_system_table)->hdr.crc32
= grub_getcrc32 (0, SUFFIX (grub_efiemu_system_table),
SUFFIX (grub_efiemu_system_table)->hdr.header_size);
grub_dprintf ("efiemu","system_table = %p, runtime_services = %p,"
" conftables = %p (%d entries)\n",
SUFFIX (grub_efiemu_system_table), runtime_services,
conftables, cntconftables);
return GRUB_ERR_NONE;
}

23
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/* This file contains definitions so that prepare.c compiles for 32-bit */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#define SUFFIX(x) x ## 32
#define TYPE(x) x ## 32_t
#include "prepare.c"

23
efiemu/prepare64.c Normal file
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/* This file contains definitions so that prepare.c compiles for 64-bit */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#define SUFFIX(x) x ## 64
#define TYPE(x) x ## 64_t
#include "prepare.c"

34
efiemu/runtime/config.h Normal file
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/* This is a pseudo config.h so that types.h compiles nicely */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#define GRUB_TYPES_CPU_HEADER 1
#ifdef ELF32
# define SIZEOF_VOID_P 4
# define SIZEOF_LONG 4
# define GRUB_TARGET_SIZEOF_VOID_P 4
# define GRUB_TARGET_SIZEOF_LONG 4
# define EFI_FUNC(x) x
#else
# define SIZEOF_VOID_P 8
# define SIZEOF_LONG 8
# define GRUB_TARGET_SIZEOF_VOID_P 8
# define GRUB_TARGET_SIZEOF_LONG 8
# define EFI_FUNC(x) x ## _real
#endif

159
efiemu/runtime/efiemu.S Normal file
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2006,2007,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/symbol.h>
/*
* x86_64 uses registry to pass parameters. Unfortunately, gcc and efi use
* different call conversion, so we need to do some conversion.
*
* gcc:
* %rdi, %rsi, %rdx, %rcx, %r8, %r9, 8(%rsp), 16(%rsp), ...
*
* efi:
* %rcx, %rdx, %r8, %r9, 32(%rsp), 40(%rsp), 48(%rsp), ...
*
*/
.file "efiemu.S"
.text
FUNCTION (efiemu_get_time)
push %rdi
push %rsi
mov %rcx, %rdi
mov %rdx, %rsi
call efiemu_get_time_real
pop %rsi
pop %rdi
ret
FUNCTION (efiemu_set_time)
push %rdi
push %rsi
mov %rcx, %rdi
call efiemu_set_time_real
pop %rsi
pop %rdi
ret
FUNCTION (efiemu_get_wakeup_time)
push %rdi
push %rsi
mov %rcx, %rdi
mov %rdx, %rsi
mov %r8, %rdx
call efiemu_get_wakeup_time_real
pop %rsi
pop %rdi
ret
FUNCTION (efiemu_set_wakeup_time)
push %rdi
push %rsi
mov %rcx, %rdi
mov %rdx, %rsi
call efiemu_set_wakeup_time_real
pop %rsi
pop %rdi
ret
FUNCTION (efiemu_get_variable)
push %rdi
push %rsi
mov %rcx, %rdi
mov %rdx, %rsi
mov %r8, %rdx
mov %r9, %rcx
mov 56(%rsp), %r8
call efiemu_get_variable_real
pop %rsi
pop %rdi
ret
FUNCTION (efiemu_get_next_variable_name)
push %rdi
push %rsi
mov %rcx, %rdi
mov %rdx, %rsi
mov %r8, %rdx
call efiemu_get_next_variable_name_real
pop %rsi
pop %rdi
ret
FUNCTION (efiemu_set_variable)
push %rdi
push %rsi
mov %rcx, %rdi
mov %rdx, %rsi
mov %r8, %rdx
mov %r9, %rcx
mov 56(%rsp), %r8
call efiemu_set_variable_real
pop %rsi
pop %rdi
ret
FUNCTION (efiemu_get_next_high_monotonic_count)
push %rdi
push %rsi
mov %rcx, %rdi
call efiemu_get_next_high_monotonic_count_real
pop %rsi
pop %rdi
ret
FUNCTION (efiemu_reset_system)
push %rdi
push %rsi
mov %rcx, %rdi
mov %rdx, %rsi
mov %r8, %rdx
mov %r9, %rcx
call efiemu_reset_system_real
pop %rsi
pop %rdi
ret
/* The following functions are always called in physical mode */
.section ".text-physical", "ax"
FUNCTION (efiemu_set_virtual_address_map)
push %rdi
push %rsi
mov %rcx, %rdi
mov %rdx, %rsi
mov %r8, %rdx
mov %r9, %rcx
call efiemu_set_virtual_address_map_real
pop %rsi
pop %rdi
ret
FUNCTION (efiemu_convert_pointer)
push %rdi
push %rsi
mov %rcx, %rdi
mov %rdx, %rsi
call efiemu_convert_pointer_real
pop %rsi
pop %rdi
ret

623
efiemu/runtime/efiemu.c Normal file
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2006,2007,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
/* This is an emulation of EFI runtime services.
This allows a more uniform boot on i386 machines.
As it emulates only runtime serviceit isn't able
to chainload EFI bootloader on non-EFI system (TODO) */
#include <grub/symbol.h>
#include <grub/types.h>
#include <grub/efi/api.h>
#include <grub/efiemu/runtime.h>
grub_efi_status_t
efiemu_get_time (grub_efi_time_t *time,
grub_efi_time_capabilities_t *capabilities);
grub_efi_status_t
efiemu_set_time (grub_efi_time_t *time);
grub_efi_status_t
efiemu_get_wakeup_time (grub_efi_boolean_t *enabled,
grub_efi_boolean_t *pending,
grub_efi_time_t *time);
grub_efi_status_t
efiemu_set_wakeup_time (grub_efi_boolean_t enabled,
grub_efi_time_t *time);
grub_efi_status_t
efiemu_set_virtual_address_map (grub_efi_uintn_t memory_map_size,
grub_efi_uintn_t descriptor_size,
grub_efi_uint32_t descriptor_version,
grub_efi_memory_descriptor_t *virtual_map)
__attribute__ ((section(".text-physical")));
grub_efi_status_t
efiemu_convert_pointer (grub_efi_uintn_t debug_disposition,
void **address)
__attribute__ ((section(".text-physical")));
grub_efi_status_t
efiemu_get_variable (grub_efi_char16_t *variable_name,
grub_efi_guid_t *vendor_guid,
grub_efi_uint32_t *attributes,
grub_efi_uintn_t *data_size,
void *data);
grub_efi_status_t
efiemu_get_next_variable_name (grub_efi_uintn_t *variable_name_size,
grub_efi_char16_t *variable_name,
grub_efi_guid_t *vendor_guid);
grub_efi_status_t
efiemu_set_variable (grub_efi_char16_t *variable_name,
grub_efi_guid_t *vendor_guid,
grub_efi_uint32_t attributes,
grub_efi_uintn_t data_size,
void *data);
grub_efi_status_t
efiemu_get_next_high_monotonic_count (grub_efi_uint32_t *high_count);
void
efiemu_reset_system (grub_efi_reset_type_t reset_type,
grub_efi_status_t reset_status,
grub_efi_uintn_t data_size,
grub_efi_char16_t *reset_data);
grub_efi_status_t
EFI_FUNC (efiemu_set_virtual_address_map) (grub_efi_uintn_t,
grub_efi_uintn_t,
grub_efi_uint32_t,
grub_efi_memory_descriptor_t *)
__attribute__ ((section(".text-physical")));
grub_efi_status_t
EFI_FUNC (efiemu_convert_pointer) (grub_efi_uintn_t debug_disposition,
void **address)
__attribute__ ((section(".text-physical")));
static grub_uint32_t
efiemu_getcrc32 (grub_uint32_t crc, void *buf, int size)
__attribute__ ((section(".text-physical")));
static void
init_crc32_table (void)
__attribute__ ((section(".text-physical")));
/*
The log. It's used when examining memory dump
*/
static grub_uint8_t loge[1000] = "EFIEMULOG";
static int logn = 9;
#define LOG(x) { if (logn<900) loge[logn++]=x; }
static int ptv_relocated = 0;
/* Interface with grub */
struct grub_efi_runtime_services efiemu_runtime_services;
struct grub_efi_system_table efiemu_system_table;
extern struct grub_efiemu_ptv_rel efiemu_ptv_relloc[];
extern grub_uint8_t efiemu_variables[];
extern grub_uint32_t efiemu_varsize;
extern grub_uint32_t efiemu_high_monotonic_count;
extern grub_int16_t efiemu_time_zone;
extern grub_uint8_t efiemu_time_daylight;
extern grub_uint32_t efiemu_time_accuracy;
/* Some standard functions because we need to be stadalone */
static void
efiemu_memcpy (void *to, void *from, int count)
{
int i;
for (i = 0; i < count; i++)
((grub_uint8_t *) to)[i] = ((grub_uint8_t *) from)[i];
}
static int
efiemu_str16equal (grub_uint16_t *a, grub_uint16_t *b)
{
grub_uint16_t *ptr1, *ptr2;
for (ptr1=a,ptr2=b; *ptr1 && *ptr2 == *ptr1; ptr1++, ptr2++);
return *ptr2 == *ptr1;
}
static grub_size_t
efiemu_str16len (grub_uint16_t *a)
{
grub_uint16_t *ptr1;
for (ptr1 = a; *ptr1; ptr1++);
return ptr1 - a;
}
static int
efiemu_memequal (void *a, void *b, grub_size_t n)
{
grub_uint8_t *ptr1, *ptr2;
for (ptr1 = (grub_uint8_t *) a, ptr2 = (grub_uint8_t *)b;
ptr1 < (grub_uint8_t *)a + n && *ptr2 == *ptr1; ptr1++, ptr2++);
return ptr1 == a + n;
}
static void
efiemu_memset (grub_uint8_t *a, grub_uint8_t b, grub_size_t n)
{
grub_uint8_t *ptr1;
for (ptr1=a; ptr1 < a + n; ptr1++)
*ptr1 = b;
}
static inline void
write_cmos (grub_uint8_t addr, grub_uint8_t val)
{
__asm__ __volatile__ ("outb %%al,$0x70\n"
"mov %%bl, %%al\n"
"outb %%al,$0x71": :"a" (addr), "b" (val));
}
static inline grub_uint8_t
read_cmos (grub_uint8_t addr)
{
grub_uint8_t ret;
__asm__ __volatile__ ("outb %%al, $0x70\n"
"inb $0x71, %%al": "=a"(ret) :"a" (addr));
return ret;
}
/* Needed by some gcc versions */
int __stack_chk_fail ()
{
return 0;
}
/* The function that implement runtime services as specified in
EFI specification */
static inline grub_uint8_t
bcd_to_hex (grub_uint8_t in)
{
return 10 * ((in & 0xf0) >> 4) + (in & 0x0f);
}
grub_efi_status_t
EFI_FUNC (efiemu_get_time) (grub_efi_time_t *time,
grub_efi_time_capabilities_t *capabilities)
{
LOG ('a');
grub_uint8_t state;
state = read_cmos (0xb);
if (!(state & (1 << 2)))
{
time->year = 2000 + bcd_to_hex (read_cmos (0x9));
time->month = bcd_to_hex (read_cmos (0x8));
time->day = bcd_to_hex (read_cmos (0x7));
time->hour = bcd_to_hex (read_cmos (0x4));
if (time->hour >= 81)
time->hour -= 80 - 12;
if (time->hour == 24)
time->hour = 0;
time->minute = bcd_to_hex (read_cmos (0x2));
time->second = bcd_to_hex (read_cmos (0x0));
}
else
{
time->year = 2000 + read_cmos (0x9);
time->month = read_cmos (0x8);
time->day = read_cmos (0x7);
time->hour = read_cmos (0x4);
if (time->hour >= 0x81)
time->hour -= 0x80 - 12;
if (time->hour == 24)
time->hour = 0;
time->minute = read_cmos (0x2);
time->second = read_cmos (0x0);
}
time->nanosecond = 0;
time->pad1 = 0;
time->pad2 = 0;
time->time_zone = efiemu_time_zone;
time->daylight = efiemu_time_daylight;
capabilities->resolution = 1;
capabilities->accuracy = efiemu_time_accuracy;
capabilities->sets_to_zero = 0;
return GRUB_EFI_SUCCESS;
}
grub_efi_status_t
EFI_FUNC (efiemu_set_time) (grub_efi_time_t *time)
{
LOG ('b');
grub_uint8_t state;
state = read_cmos (0xb);
write_cmos (0xb, state | 0x6);
write_cmos (0x9, time->year - 2000);
write_cmos (0x8, time->month);
write_cmos (0x7, time->day);
write_cmos (0x4, time->hour);
write_cmos (0x2, time->minute);
write_cmos (0x0, time->second);
efiemu_time_zone = time->time_zone;
efiemu_time_daylight = time->daylight;
return GRUB_EFI_SUCCESS;
}
/* Folowing 2 functions are vendor specific. So announce it as unsupported */
grub_efi_status_t
EFI_FUNC (efiemu_get_wakeup_time) (grub_efi_boolean_t *enabled,
grub_efi_boolean_t *pending,
grub_efi_time_t *time)
{
LOG ('c');
return GRUB_EFI_UNSUPPORTED;
}
grub_efi_status_t
EFI_FUNC (efiemu_set_wakeup_time) (grub_efi_boolean_t enabled,
grub_efi_time_t *time)
{
LOG ('d');
return GRUB_EFI_UNSUPPORTED;
}
static grub_uint32_t crc32_table [256];
static void
init_crc32_table (void)
{
auto grub_uint32_t reflect (grub_uint32_t ref, int len);
grub_uint32_t reflect (grub_uint32_t ref, int len)
{
grub_uint32_t result = 0;
int i;
for (i = 1; i <= len; i++)
{
if (ref & 1)
result |= 1 << (len - i);
ref >>= 1;
}
return result;
}
grub_uint32_t polynomial = 0x04c11db7;
int i, j;
for(i = 0; i < 256; i++)
{
crc32_table[i] = reflect(i, 8) << 24;
for (j = 0; j < 8; j++)
crc32_table[i] = (crc32_table[i] << 1) ^
(crc32_table[i] & (1 << 31) ? polynomial : 0);
crc32_table[i] = reflect(crc32_table[i], 32);
}
}
static grub_uint32_t
efiemu_getcrc32 (grub_uint32_t crc, void *buf, int size)
{
int i;
grub_uint8_t *data = buf;
if (! crc32_table[1])
init_crc32_table ();
crc^= 0xffffffff;
for (i = 0; i < size; i++)
{
crc = (crc >> 8) ^ crc32_table[(crc & 0xFF) ^ *data];
data++;
}
return crc ^ 0xffffffff;
}
grub_efi_status_t EFI_FUNC
(efiemu_set_virtual_address_map) (grub_efi_uintn_t memory_map_size,
grub_efi_uintn_t descriptor_size,
grub_efi_uint32_t descriptor_version,
grub_efi_memory_descriptor_t *virtual_map)
{
struct grub_efiemu_ptv_rel *cur_relloc;
LOG ('e');
/* Ensure that we are called only once */
if (ptv_relocated)
return GRUB_EFI_UNSUPPORTED;
ptv_relocated = 1;
/* Correct addresses using information supplied by grub */
for (cur_relloc = efiemu_ptv_relloc; cur_relloc->size;cur_relloc++)
{
grub_int64_t corr = 0;
grub_efi_memory_descriptor_t *descptr;
/* Compute correction */
for (descptr = virtual_map;
((grub_uint8_t *) descptr - (grub_uint8_t *) virtual_map)
< memory_map_size;
descptr = (grub_efi_memory_descriptor_t *)
((grub_uint8_t *) descptr + descriptor_size))
{
if (descptr->type == cur_relloc->plustype)
corr += descptr->virtual_start - descptr->physical_start;
if (descptr->type == cur_relloc->minustype)
corr -= descptr->virtual_start - descptr->physical_start;
}
/* Apply correction */
switch (cur_relloc->size)
{
case 8:
*((grub_uint64_t *) UINT_TO_PTR (cur_relloc->addr)) += corr;
break;
case 4:
*((grub_uint32_t *) UINT_TO_PTR (cur_relloc->addr)) += corr;
break;
case 2:
*((grub_uint16_t *) UINT_TO_PTR (cur_relloc->addr)) += corr;
break;
case 1:
*((grub_uint8_t *) UINT_TO_PTR (cur_relloc->addr)) += corr;
break;
}
}
/* Recompute crc32 of system table and runtime services */
efiemu_system_table.hdr.crc32 = 0;
efiemu_system_table.hdr.crc32 = efiemu_getcrc32
(0, &efiemu_system_table, sizeof (efiemu_system_table));
efiemu_runtime_services.hdr.crc32 = 0;
efiemu_runtime_services.hdr.crc32 = efiemu_getcrc32
(0, &efiemu_runtime_services, sizeof (efiemu_runtime_services));
return GRUB_EFI_SUCCESS;
}
/* since efiemu_set_virtual_address_map corrects all the pointers
we don't need efiemu_convert_pointer */
grub_efi_status_t
EFI_FUNC (efiemu_convert_pointer) (grub_efi_uintn_t debug_disposition,
void **address)
{
LOG ('f');
return GRUB_EFI_UNSUPPORTED;
}
/* Next comes variable services. Because we have no vendor-independent
way to store these variables we have no non-volatility */
/* Find variable by name and GUID. */
static struct efi_variable *
find_variable (grub_efi_guid_t *vendor_guid,
grub_efi_char16_t *variable_name)
{
grub_uint8_t *ptr;
struct efi_variable *efivar;
for (ptr = efiemu_variables; ptr < efiemu_variables + efiemu_varsize; )
{
efivar = (struct efi_variable *) ptr;
if (!efivar->namelen)
return 0;
if (efiemu_str16equal((grub_efi_char16_t *)(efivar + 1), variable_name)
&& efiemu_memequal (&(efivar->guid), vendor_guid,
sizeof (efivar->guid)))
return efivar;
ptr += efivar->namelen + efivar->size + sizeof (*efivar);
}
return 0;
}
grub_efi_status_t
EFI_FUNC (efiemu_get_variable) (grub_efi_char16_t *variable_name,
grub_efi_guid_t *vendor_guid,
grub_efi_uint32_t *attributes,
grub_efi_uintn_t *data_size,
void *data)
{
struct efi_variable *efivar;
LOG ('g');
efivar = find_variable (vendor_guid, variable_name);
if (!efivar)
return GRUB_EFI_NOT_FOUND;
if (*data_size < efivar->size)
{
*data_size = efivar->size;
return GRUB_EFI_BUFFER_TOO_SMALL;
}
*data_size = efivar->size;
efiemu_memcpy (data, (grub_uint8_t *)(efivar + 1) + efivar->namelen,
efivar->size);
*attributes = efivar->attributes;
return GRUB_EFI_SUCCESS;
}
grub_efi_status_t EFI_FUNC
(efiemu_get_next_variable_name) (grub_efi_uintn_t *variable_name_size,
grub_efi_char16_t *variable_name,
grub_efi_guid_t *vendor_guid)
{
struct efi_variable *efivar;
LOG ('l');
if (!variable_name_size || !variable_name || !vendor_guid)
return GRUB_EFI_INVALID_PARAMETER;
if (variable_name[0])
{
efivar = find_variable (vendor_guid, variable_name);
if (!efivar)
return GRUB_EFI_NOT_FOUND;
efivar = (struct efi_variable *)((grub_uint8_t *)efivar
+ efivar->namelen
+ efivar->size + sizeof (*efivar));
}
else
efivar = (struct efi_variable *) (efiemu_variables);
LOG ('m');
if ((grub_uint8_t *)efivar >= efiemu_variables + efiemu_varsize
|| !efivar->namelen)
return GRUB_EFI_NOT_FOUND;
if (*variable_name_size < efivar->namelen)
{
*variable_name_size = efivar->namelen;
return GRUB_EFI_BUFFER_TOO_SMALL;
}
efiemu_memcpy (variable_name, efivar + 1, efivar->namelen);
efiemu_memcpy (vendor_guid, &(efivar->guid),
sizeof (efivar->guid));
LOG('h');
return GRUB_EFI_SUCCESS;
}
grub_efi_status_t
EFI_FUNC (efiemu_set_variable) (grub_efi_char16_t *variable_name,
grub_efi_guid_t *vendor_guid,
grub_efi_uint32_t attributes,
grub_efi_uintn_t data_size,
void *data)
{
struct efi_variable *efivar;
grub_uint8_t *ptr;
LOG('i');
if (!variable_name[0])
return GRUB_EFI_INVALID_PARAMETER;
efivar = find_variable (vendor_guid, variable_name);
/* Delete variable if any */
if (efivar)
{
efiemu_memcpy (efivar, (grub_uint8_t *)(efivar + 1)
+ efivar->namelen + efivar->size,
(efiemu_variables + efiemu_varsize)
- ((grub_uint8_t *)(efivar + 1)
+ efivar->namelen + efivar->size));
efiemu_memset (efiemu_variables + efiemu_varsize
- (sizeof (*efivar) + efivar->namelen + efivar->size),
0, (sizeof (*efivar) + efivar->namelen + efivar->size));
}
if (!data_size)
return GRUB_EFI_SUCCESS;
for (ptr = efiemu_variables; ptr < efiemu_variables + efiemu_varsize; )
{
efivar = (struct efi_variable *) ptr;
ptr += efivar->namelen + efivar->size + sizeof (*efivar);
if (!efivar->namelen)
break;
}
if ((grub_uint8_t *)(efivar + 1) + data_size
+ 2 * (efiemu_str16len (variable_name) + 1)
>= efiemu_variables + efiemu_varsize)
return GRUB_EFI_OUT_OF_RESOURCES;
efiemu_memcpy (&(efivar->guid), vendor_guid, sizeof (efivar->guid));
efivar->namelen = 2 * (efiemu_str16len (variable_name) + 1);
efivar->size = data_size;
efivar->attributes = attributes;
efiemu_memcpy (efivar + 1, variable_name,
2 * (efiemu_str16len (variable_name) + 1));
efiemu_memcpy ((grub_uint8_t *)(efivar + 1)
+ 2 * (efiemu_str16len (variable_name) + 1),
data, data_size);
return GRUB_EFI_SUCCESS;
}
grub_efi_status_t EFI_FUNC
(efiemu_get_next_high_monotonic_count) (grub_efi_uint32_t *high_count)
{
LOG ('j');
if (!high_count)
return GRUB_EFI_INVALID_PARAMETER;
*high_count = ++efiemu_high_monotonic_count;
return GRUB_EFI_SUCCESS;
}
/* To implement it with APM we need to go to real mode. It's too much hassle
Besides EFI specification says that this function shouldn't be used
on systems supporting ACPI
*/
void
EFI_FUNC (efiemu_reset_system) (grub_efi_reset_type_t reset_type,
grub_efi_status_t reset_status,
grub_efi_uintn_t data_size,
grub_efi_char16_t *reset_data)
{
LOG ('k');
}
struct grub_efi_runtime_services efiemu_runtime_services =
{
.hdr =
{
.signature = GRUB_EFIEMU_RUNTIME_SERVICES_SIGNATURE,
.revision = 0x0001000a,
.header_size = sizeof (struct grub_efi_runtime_services),
.crc32 = 0, /* filled later*/
.reserved = 0
},
.get_time = efiemu_get_time,
.set_time = efiemu_set_time,
.get_wakeup_time = efiemu_get_wakeup_time,
.set_wakeup_time = efiemu_set_wakeup_time,
.set_virtual_address_map = efiemu_set_virtual_address_map,
.convert_pointer = efiemu_convert_pointer,
.get_variable = efiemu_get_variable,
.get_next_variable_name = efiemu_get_next_variable_name,
.set_variable = efiemu_set_variable,
.get_next_high_monotonic_count = efiemu_get_next_high_monotonic_count,
.reset_system = efiemu_reset_system
};
static grub_uint16_t efiemu_vendor[] =
{'G', 'R', 'U', 'B', ' ', 'E', 'F', 'I', ' ',
'R', 'U', 'N', 'T', 'I', 'M', 'E', 0};
struct grub_efi_system_table efiemu_system_table =
{
.hdr =
{
.signature = GRUB_EFIEMU_SYSTEM_TABLE_SIGNATURE,
.revision = 0x0001000a,
.header_size = sizeof (struct grub_efi_system_table),
.crc32 = 0, /* filled later*/
.reserved = 0
},
.firmware_vendor = efiemu_vendor,
.firmware_revision = 0x0001000a,
.console_in_handler = 0,
.con_in = 0,
.console_out_handler = 0,
.con_out = 0,
.standard_error_handle = 0,
.std_err = 0,
.runtime_services = &efiemu_runtime_services,
.boot_services = 0,
.num_table_entries = 0,
.configuration_table = 0
};

4
efiemu/runtime/efiemu.sh Normal file
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@ -0,0 +1,4 @@
gcc -c -m32 -DELF32 -o efiemu32.o ./efiemu.c -Wall -Werror -nostdlib -O2 -I. -I../../include
gcc -c -m64 -DELF64 -o efiemu64_c.o ./efiemu.c -Wall -Werror -mcmodel=large -O2 -I. -I../../include
gcc -c -m64 -DELF64 -o efiemu64_s.o ./efiemu.S -Wall -Werror -mcmodel=large -O2 -I. -I../../include
ld -o efiemu64.o -r efiemu64_s.o efiemu64_c.o -nostdlib

188
efiemu/symbols.c Normal file
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@ -0,0 +1,188 @@
/* Code for managing symbols and pointers in efiemu */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/err.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/efiemu/efiemu.h>
#include <grub/efiemu/runtime.h>
static int ptv_written = 0;
static int ptv_alloc = 0;
static int ptv_handle = 0;
static int ptv_requested = 0;
static struct grub_efiemu_sym *efiemu_syms = 0;
struct grub_efiemu_sym
{
struct grub_efiemu_sym *next;
char *name;
int handle;
grub_off_t off;
};
void
grub_efiemu_free_syms (void)
{
struct grub_efiemu_sym *cur, *d;
for (cur = efiemu_syms; cur;)
{
d = cur->next;
grub_free (cur->name);
grub_free (cur);
cur = d;
}
efiemu_syms = 0;
ptv_written = 0;
ptv_alloc = 0;
ptv_requested = 0;
grub_efiemu_mm_return_request (ptv_handle);
ptv_handle = 0;
}
/* Announce that the module will need NUM allocators */
/* Because of deferred memory allocation all the relocators have to be
announced during phase 1*/
grub_err_t
grub_efiemu_request_symbols (int num)
{
if (ptv_alloc)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"symbols have already been allocated");
if (num < 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"can't request negative symbols");
ptv_requested += num;
return GRUB_ERR_NONE;
}
/* Resolve the symbol name NAME and set HANDLE and OFF accordingly */
grub_err_t
grub_efiemu_resolve_symbol (const char *name, int *handle, grub_off_t *off)
{
struct grub_efiemu_sym *cur;
for (cur = efiemu_syms; cur; cur = cur->next)
if (!grub_strcmp (name, cur->name))
{
*handle = cur->handle;
*off = cur->off;
return GRUB_ERR_NONE;
}
grub_dprintf ("efiemu", "%s not found\n", name);
return grub_error (GRUB_ERR_BAD_OS, "symbol %s isn't found", name);
}
/* Register symbol named NAME in memory handle HANDLE at offset OFF */
grub_err_t
grub_efiemu_register_symbol (const char *name, int handle, grub_off_t off)
{
struct grub_efiemu_sym *cur;
cur = (struct grub_efiemu_sym *) grub_malloc (sizeof (*cur));
grub_dprintf ("efiemu", "registering symbol '%s'\n", name);
if (!cur)
return grub_error (GRUB_ERR_OUT_OF_MEMORY, "couldn't register symbol");
cur->name = grub_strdup (name);
cur->next = efiemu_syms;
cur->handle = handle;
cur->off = off;
efiemu_syms = cur;
return 0;
}
/* Go from phase 1 to phase 2. Must be called before similar function in mm.c */
grub_err_t
grub_efiemu_alloc_syms (void)
{
ptv_alloc = ptv_requested;
ptv_handle = grub_efiemu_request_memalign
(1, (ptv_requested + 1) * sizeof (struct grub_efiemu_ptv_rel),
GRUB_EFI_RUNTIME_SERVICES_DATA);
grub_efiemu_register_symbol ("efiemu_ptv_relloc", ptv_handle, 0);
return grub_errno;
}
/* Write value (pointer to memory PLUS_HANDLE)
- (pointer to memory MINUS_HANDLE) + VALUE to ADDR assuming that the
size SIZE bytes. If PTV_NEEDED is 1 then announce it to runtime that this
value needs to be recomputed before going to virtual mode
*/
grub_err_t
grub_efiemu_write_value (void *addr, grub_uint32_t value, int plus_handle,
int minus_handle, int ptv_needed, int size)
{
/* Announce relocator to runtime */
if (ptv_needed)
{
struct grub_efiemu_ptv_rel *ptv_rels
= grub_efiemu_mm_obtain_request (ptv_handle);
if (ptv_needed && ptv_written >= ptv_alloc)
return grub_error (GRUB_ERR_OUT_OF_MEMORY,
"your module didn't declare efiemu "
" relocators correctly");
if (minus_handle)
ptv_rels[ptv_written].minustype
= grub_efiemu_mm_get_type (minus_handle);
else
ptv_rels[ptv_written].minustype = 0;
if (plus_handle)
ptv_rels[ptv_written].plustype
= grub_efiemu_mm_get_type (plus_handle);
else
ptv_rels[ptv_written].plustype = 0;
ptv_rels[ptv_written].addr = PTR_TO_UINT64 (addr);
ptv_rels[ptv_written].size = size;
ptv_written++;
/* memset next value to zero to mark the end */
grub_memset (&ptv_rels[ptv_written], 0, sizeof (ptv_rels[ptv_written]));
}
/* Compute the value */
if (minus_handle)
value -= PTR_TO_UINT32 (grub_efiemu_mm_obtain_request (minus_handle));
if (plus_handle)
value += PTR_TO_UINT32 (grub_efiemu_mm_obtain_request (plus_handle));
/* Write the value */
switch (size)
{
case 8:
*((grub_uint64_t *) addr) = value;
break;
case 4:
*((grub_uint32_t *) addr) = value;
break;
case 2:
*((grub_uint16_t *) addr) = value;
break;
case 1:
*((grub_uint8_t *) addr) = value;
break;
default:
return grub_error (GRUB_ERR_BAD_ARGUMENT, "wrong symbol size");
}
return GRUB_ERR_NONE;
}

75
include/grub/autoefi.h Normal file
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@ -0,0 +1,75 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
/* This file provides some abstractions so that the same code compiles with
both efi and efiemu
*/
#ifndef GRUB_AUTOEFI_HEADER
#define GRUB_AUTOEFI_HEADER 1
#include <grub/machine/machine.h>
#ifdef GRUB_MACHINE_EFI
# include <grub/efi/efi.h>
# define grub_autoefi_get_memory_map grub_efi_get_memory_map
# define grub_autoefi_finish_boot_services grub_efi_finish_boot_services
# define grub_autoefi_system_table grub_efi_system_table
# define grub_autoefi_mmap_iterate grub_machine_mmap_iterate
static inline grub_err_t grub_autoefi_prepare (void)
{
return GRUB_ERR_NONE;
};
# define GRUB_AUTOEFI_MEMORY_AVAILABLE GRUB_MACHINE_MEMORY_AVAILABLE
# define GRUB_AUTOEFI_MEMORY_RESERVED GRUB_MACHINE_MEMORY_RESERVED
# ifdef GRUB_MACHINE_MEMORY_ACPI
# define GRUB_AUTOEFI_MEMORY_ACPI GRUB_MACHINE_MEMORY_ACPI
# endif
# ifdef GRUB_MACHINE_MEMORY_NVS
# define GRUB_AUTOEFI_MEMORY_NVS GRUB_MACHINE_MEMORY_NVS
# endif
# ifdef GRUB_MACHINE_MEMORY_CODE
# define GRUB_AUTOEFI_MEMORY_CODE GRUB_MACHINE_MEMORY_CODE
# endif
# define SYSTEM_TABLE_SIZEOF(x) (sizeof(grub_efi_system_table->x))
# define SYSTEM_TABLE_VAR(x) ((void *)&(grub_efi_system_table->x))
# define SYSTEM_TABLE_PTR(x) ((void *)(grub_efi_system_table->x))
# define SIZEOF_OF_UINTN sizeof (grub_efi_uintn_t)
# define SYSTEM_TABLE(x) (grub_efi_system_table->x)
# define EFI_PRESENT 1
#else
# include <grub/efiemu/efiemu.h>
# define grub_autoefi_get_memory_map grub_efiemu_get_memory_map
# define grub_autoefi_finish_boot_services grub_efiemu_finish_boot_services
# define grub_autoefi_system_table grub_efiemu_system_table
# define grub_autoefi_mmap_iterate grub_efiemu_mmap_iterate
# define grub_autoefi_prepare grub_efiemu_prepare
# define GRUB_AUTOEFI_MEMORY_AVAILABLE GRUB_EFIEMU_MEMORY_AVAILABLE
# define GRUB_AUTOEFI_MEMORY_RESERVED GRUB_EFIEMU_MEMORY_RESERVED
# define GRUB_AUTOEFI_MEMORY_ACPI GRUB_EFIEMU_MEMORY_ACPI
# define GRUB_AUTOEFI_MEMORY_NVS GRUB_EFIEMU_MEMORY_NVS
# define GRUB_AUTOEFI_MEMORY_CODE GRUB_EFIEMU_MEMORY_CODE
# define SYSTEM_TABLE_SIZEOF GRUB_EFIEMU_SYSTEM_TABLE_SIZEOF
# define SYSTEM_TABLE_VAR GRUB_EFIEMU_SYSTEM_TABLE_VAR
# define SYSTEM_TABLE_PTR GRUB_EFIEMU_SYSTEM_TABLE_PTR
# define SIZEOF_OF_UINTN GRUB_EFIEMU_SIZEOF_OF_UINTN
# define SYSTEM_TABLE GRUB_EFIEMU_SYSTEM_TABLE
# define grub_efi_allocate_pages(x,y) (x)
# define grub_efi_free_pages(x,y) GRUB_EFI_SUCCESS
# define EFI_PRESENT 1
#endif
#endif

23
include/grub/efi/api.h
View file

@ -40,15 +40,15 @@
#define GRUB_EFI_TPL_NOTIFY 16 #define GRUB_EFI_TPL_NOTIFY 16
#define GRUB_EFI_TPL_HIGH_LEVEL 31 #define GRUB_EFI_TPL_HIGH_LEVEL 31
#define GRUB_EFI_MEMORY_UC 0x0000000000000001 #define GRUB_EFI_MEMORY_UC 0x0000000000000001LL
#define GRUB_EFI_MEMORY_WC 0x0000000000000002 #define GRUB_EFI_MEMORY_WC 0x0000000000000002LL
#define GRUB_EFI_MEMORY_WT 0x0000000000000004 #define GRUB_EFI_MEMORY_WT 0x0000000000000004LL
#define GRUB_EFI_MEMORY_WB 0x0000000000000008 #define GRUB_EFI_MEMORY_WB 0x0000000000000008LL
#define GRUB_EFI_MEMORY_UCE 0x0000000000000010 #define GRUB_EFI_MEMORY_UCE 0x0000000000000010LL
#define GRUB_EFI_MEMORY_WP 0x0000000000001000 #define GRUB_EFI_MEMORY_WP 0x0000000000001000LL
#define GRUB_EFI_MEMORY_RP 0x0000000000002000 #define GRUB_EFI_MEMORY_RP 0x0000000000002000LL
#define GRUB_EFI_MEMORY_XP 0x0000000000004000 #define GRUB_EFI_MEMORY_XP 0x0000000000004000LL
#define GRUB_EFI_MEMORY_RUNTIME 0x8000000000000000 #define GRUB_EFI_MEMORY_RUNTIME 0x8000000000000000LL
#define GRUB_EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL 0x00000001 #define GRUB_EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL 0x00000001
#define GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL 0x00000002 #define GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL 0x00000002
@ -619,7 +619,7 @@ struct grub_efi_time
grub_efi_int16_t time_zone; grub_efi_int16_t time_zone;
grub_efi_uint8_t daylight; grub_efi_uint8_t daylight;
grub_efi_uint8_t pad2; grub_efi_uint8_t pad2;
}; } __attribute__ ((packed));
typedef struct grub_efi_time grub_efi_time_t; typedef struct grub_efi_time grub_efi_time_t;
struct grub_efi_time_capabilities struct grub_efi_time_capabilities
@ -936,6 +936,9 @@ struct grub_efi_configuration_table
} __attribute__ ((packed)); } __attribute__ ((packed));
typedef struct grub_efi_configuration_table grub_efi_configuration_table_t; typedef struct grub_efi_configuration_table grub_efi_configuration_table_t;
#define GRUB_EFIEMU_SYSTEM_TABLE_SIGNATURE 0x5453595320494249LL
#define GRUB_EFIEMU_RUNTIME_SERVICES_SIGNATURE 0x56524553544e5552LL
struct grub_efi_simple_input_interface struct grub_efi_simple_input_interface
{ {
grub_efi_status_t grub_efi_status_t

276
include/grub/efiemu/efiemu.h Normal file
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@ -0,0 +1,276 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_EFI_EMU_HEADER
#define GRUB_EFI_EMU_HEADER 1
#include <grub/efi/api.h>
#include <grub/file.h>
#define GRUB_EFIEMU_PAGESIZE 4096
/* EFI api defined in 32-bit and 64-bit version*/
struct grub_efi_system_table32
{
grub_efi_table_header_t hdr;
grub_efi_uint32_t firmware_vendor;
grub_efi_uint32_t firmware_revision;
grub_efi_uint32_t console_in_handler;
grub_efi_uint32_t con_in;
grub_efi_uint32_t console_out_handler;
grub_efi_uint32_t con_out;
grub_efi_uint32_t standard_error_handle;
grub_efi_uint32_t std_err;
grub_efi_uint32_t runtime_services;
grub_efi_uint32_t boot_services;
grub_efi_uint32_t num_table_entries;
grub_efi_uint32_t configuration_table;
} __attribute__ ((packed));
typedef struct grub_efi_system_table32 grub_efi_system_table32_t;
struct grub_efi_system_table64
{
grub_efi_table_header_t hdr;
grub_efi_uint64_t firmware_vendor;
grub_efi_uint32_t firmware_revision;
grub_efi_uint32_t pad;
grub_efi_uint64_t console_in_handler;
grub_efi_uint64_t con_in;
grub_efi_uint64_t console_out_handler;
grub_efi_uint64_t con_out;
grub_efi_uint64_t standard_error_handle;
grub_efi_uint64_t std_err;
grub_efi_uint64_t runtime_services;
grub_efi_uint64_t boot_services;
grub_efi_uint64_t num_table_entries;
grub_efi_uint64_t configuration_table;
} __attribute__ ((packed));
typedef struct grub_efi_system_table64 grub_efi_system_table64_t;
struct grub_efiemu_runtime_services32
{
grub_efi_table_header_t hdr;
grub_efi_uint32_t get_time;
grub_efi_uint32_t set_time;
grub_efi_uint32_t get_wakeup_time;
grub_efi_uint32_t set_wakeup_time;
grub_efi_uint32_t set_virtual_address_map;
grub_efi_uint32_t convert_pointer;
grub_efi_uint32_t get_variable;
grub_efi_uint32_t get_next_variable_name;
grub_efi_uint32_t set_variable;
grub_efi_uint32_t get_next_high_monotonic_count;
grub_efi_uint32_t reset_system;
} __attribute__ ((packed));
typedef struct grub_efiemu_runtime_services32 grub_efiemu_runtime_services32_t;
struct grub_efiemu_runtime_services64
{
grub_efi_table_header_t hdr;
grub_efi_uint64_t get_time;
grub_efi_uint64_t set_time;
grub_efi_uint64_t get_wakeup_time;
grub_efi_uint64_t set_wakeup_time;
grub_efi_uint64_t set_virtual_address_map;
grub_efi_uint64_t convert_pointer;
grub_efi_uint64_t get_variable;
grub_efi_uint64_t get_next_variable_name;
grub_efi_uint64_t set_variable;
grub_efi_uint64_t get_next_high_monotonic_count;
grub_efi_uint64_t reset_system;
} __attribute__ ((packed));
typedef struct grub_efiemu_runtime_services64 grub_efiemu_runtime_services64_t;
extern grub_efi_system_table32_t *grub_efiemu_system_table32;
extern grub_efi_system_table64_t *grub_efiemu_system_table64;
/* Convenience macroses to access currently loaded efiemu */
#define grub_efiemu_system_table ((grub_efiemu_sizeof_uintn_t () == 8) \
? (void *) grub_efiemu_system_table64 \
: (void *) grub_efiemu_system_table32)
#define GRUB_EFIEMU_SIZEOF_OF_UINTN (grub_efiemu_sizeof_uintn_t ())
#define GRUB_EFIEMU_SYSTEM_TABLE(x) ((grub_efiemu_sizeof_uintn_t () == 8) \
? grub_efiemu_system_table64->x \
: grub_efiemu_system_table32->x)
#define GRUB_EFIEMU_SYSTEM_TABLE_SET(x,y) ((grub_efiemu_sizeof_uintn_t () == 8)\
? (grub_efiemu_system_table64->x \
= (y)) \
: (grub_efiemu_system_table32->x \
= (y)))
#define GRUB_EFIEMU_SYSTEM_TABLE_PTR(x) ((grub_efiemu_sizeof_uintn_t () == 8)\
? UINT_TO_PTR \
(grub_efiemu_system_table64->x) \
: UINT_TO_PTR \
(grub_efiemu_system_table32->x))
#define GRUB_EFIEMU_SYSTEM_TABLE_VAR(x) ((grub_efiemu_sizeof_uintn_t () == 8) \
? (void *) \
&(grub_efiemu_system_table64->x) \
: (void *) \
&(grub_efiemu_system_table32->x))
#define GRUB_EFIEMU_SYSTEM_TABLE_SIZEOF(x) \
((grub_efiemu_sizeof_uintn_t () == 8) \
? sizeof(grub_efiemu_system_table64->x)\
: sizeof(grub_efiemu_system_table32->x))
#define GRUB_EFIEMU_SYSTEM_TABLE_SIZEOF_TOTAL ((grub_efiemu_sizeof_uintn_t () == 8) ? sizeof(*grub_efiemu_system_table64):sizeof(*grub_efiemu_system_table32))
/* ELF management definitions and functions */
struct grub_efiemu_segment
{
struct grub_efiemu_segment *next;
grub_size_t size;
unsigned section;
int handle;
int ptv_rel_needed;
grub_off_t off;
void *srcptr;
};
typedef struct grub_efiemu_segment *grub_efiemu_segment_t;
struct grub_efiemu_elf_sym
{
int handle;
grub_off_t off;
unsigned section;
};
int grub_efiemu_check_header32 (void *ehdr, grub_size_t size);
int grub_efiemu_check_header64 (void *ehdr, grub_size_t size);
grub_err_t grub_efiemu_loadcore_init32 (void *core, grub_size_t core_size,
grub_efiemu_segment_t *segments);
grub_err_t grub_efiemu_loadcore_init64 (void *core, grub_size_t core_size,
grub_efiemu_segment_t *segments);
grub_err_t grub_efiemu_loadcore_load32 (void *core,
grub_size_t core_size,
grub_efiemu_segment_t segments);
grub_err_t grub_efiemu_loadcore_load64 (void *core,
grub_size_t core_size,
grub_efiemu_segment_t segments);
grub_err_t grub_efiemu_loadcore_unload32 (void);
grub_err_t grub_efiemu_loadcore_unload64 (void);
grub_err_t grub_efiemu_loadcore_unload(void);
grub_err_t grub_efiemu_loadcore_init (grub_file_t file);
grub_err_t grub_efiemu_loadcore_load (void);
/* Configuration tables manipulation. Definitions and functions */
struct grub_efiemu_configuration_table
{
struct grub_efiemu_configuration_table *next;
grub_efi_guid_t guid;
void * (*get_table) (void *data);
void (*unload) (void *data);
void *data;
};
struct grub_efiemu_configuration_table32
{
grub_efi_guid_t vendor_guid;
grub_efi_uint32_t vendor_table;
} __attribute__ ((packed));
typedef struct grub_efiemu_configuration_table32 grub_efiemu_configuration_table32_t;
struct grub_efiemu_configuration_table64
{
grub_efi_guid_t vendor_guid;
grub_efi_uint64_t vendor_table;
} __attribute__ ((packed));
typedef struct grub_efiemu_configuration_table32 grub_efiemu_configuration_table64_t;
grub_err_t grub_efiemu_unregister_configuration_table (grub_efi_guid_t guid);
grub_err_t
grub_efiemu_register_configuration_table (grub_efi_guid_t guid,
void * (*get_table) (void *data),
void (*unload) (void *data),
void *data);
/* Memory management functions */
int grub_efiemu_request_memalign (grub_size_t align, grub_size_t size,
grub_efi_memory_type_t type);
void *grub_efiemu_mm_obtain_request (int handle);
int grub_efiemu_get_memory_map (grub_efi_uintn_t *memory_map_size,
grub_efi_memory_descriptor_t *memory_map,
grub_efi_uintn_t *map_key,
grub_efi_uintn_t *descriptor_size,
grub_efi_uint32_t *descriptor_version);
grub_err_t grub_efiemu_mm_unload (void);
grub_err_t grub_efiemu_mm_do_alloc (void);
grub_err_t grub_efiemu_mm_init (void);
void *grub_efiemu_mm_obtain_request (int handle);
void grub_efiemu_mm_return_request (int handle);
grub_efi_memory_type_t grub_efiemu_mm_get_type (int handle);
/* Drop-in replacements for grub_efi_* and grub_machine_* */
int grub_efiemu_get_memory_map (grub_efi_uintn_t *memory_map_size,
grub_efi_memory_descriptor_t *memory_map,
grub_efi_uintn_t *map_key,
grub_efi_uintn_t *descriptor_size,
grub_efi_uint32_t *descriptor_version);
grub_err_t
grub_efiemu_mmap_iterate (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t,
grub_uint64_t,
grub_uint32_t));
int grub_efiemu_sizeof_uintn_t (void);
int grub_efiemu_exit_boot_services (grub_efi_uintn_t map_key);
int grub_efiemu_finish_boot_services (void);
grub_err_t
grub_efiemu_get_lower_upper_memory (grub_uint64_t *lower, grub_uint64_t *upper);
#define GRUB_EFIEMU_MEMORY_AVAILABLE 1
#define GRUB_EFIEMU_MEMORY_RESERVED 2
#define GRUB_EFIEMU_MEMORY_ACPI 3
#define GRUB_EFIEMU_MEMORY_NVS 4
#define GRUB_EFIEMU_MEMORY_CODE 5
/* efiemu main control definitions and functions*/
typedef enum {GRUB_EFIEMU_NOTLOADED,
GRUB_EFIEMU32, GRUB_EFIEMU64} grub_efiemu_mode_t;
struct grub_efiemu_prepare_hook
{
struct grub_efiemu_prepare_hook *next;
grub_err_t (*hook) (void *data);
void (*unload) (void *data);
void *data;
};
grub_err_t grub_efiemu_prepare32 (struct grub_efiemu_prepare_hook
*prepare_hooks,
struct grub_efiemu_configuration_table
*config_tables);
grub_err_t grub_efiemu_prepare64 (struct grub_efiemu_prepare_hook
*prepare_hooks,
struct grub_efiemu_configuration_table
*config_tables);
grub_err_t grub_efiemu_unload (void);
grub_err_t grub_efiemu_prepare (void);
grub_err_t
grub_efiemu_register_prepare_hook (grub_err_t (*hook) (void *data),
void (*unload) (void *data),
void *data);
/* symbols and pointers */
grub_err_t grub_efiemu_alloc_syms (void);
grub_err_t grub_efiemu_request_symbols (int num);
grub_err_t grub_efiemu_resolve_symbol (const char *name,
int *handle, grub_off_t *off);
grub_err_t grub_efiemu_register_symbol (const char *name,
int handle, grub_off_t off);
void grub_efiemu_free_syms (void);
grub_err_t grub_efiemu_write_value (void * addr, grub_uint32_t value,
int plus_handle,
int minus_handle, int ptv_needed, int size);
grub_err_t grub_efiemu_pnvram (void);
grub_err_t grub_efiemu_prepare (void);
char *grub_efiemu_get_default_core_name (void);
void grub_efiemu_pnvram_cmd_unregister (void);
grub_err_t grub_efiemu_autocore (void);
#endif /* ! GRUB_EFI_EMU_HEADER */

37
include/grub/efiemu/runtime.h Normal file
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@ -0,0 +1,37 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_EFI_EMU_RUNTIME_HEADER
#define GRUB_EFI_EMU_RUNTIME_HEADER 1
struct grub_efiemu_ptv_rel
{
grub_uint64_t addr;
grub_efi_memory_type_t plustype;
grub_efi_memory_type_t minustype;
grub_uint32_t size;
} __attribute__ ((packed));
struct efi_variable
{
grub_efi_guid_t guid;
grub_uint32_t namelen;
grub_uint32_t size;
grub_efi_uint32_t attributes;
} __attribute__ ((packed));
#endif /* ! GRUB_EFI_EMU_RUNTIME_HEADER */

33
include/grub/i386/efiemu.h Normal file
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@ -0,0 +1,33 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_ARCH_EFI_EMU_HEADER
#define GRUB_ARCH_EFI_EMU_HEADER 1
grub_err_t
grub_arch_efiemu_relocate_symbols32 (grub_efiemu_segment_t segs,
struct grub_efiemu_elf_sym *elfsyms,
void *ehdr);
grub_err_t
grub_arch_efiemu_relocate_symbols64 (grub_efiemu_segment_t segs,
struct grub_efiemu_elf_sym *elfsyms,
void *ehdr);
int grub_arch_efiemu_check_header32 (void *ehdr);
int grub_arch_efiemu_check_header64 (void *ehdr);
#endif

24
include/grub/i386/pc/efiemu.h Normal file
View file

@ -0,0 +1,24 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_MACHINE_EFI_EMU_HEADER
#define GRUB_MACHINE_EFI_EMU_HEADER 1
grub_err_t grub_machine_efiemu_init_tables (void);
#endif

4
util/i386/pc/grub-install.in
View file

@ -211,7 +211,7 @@ if test -n "$tmp"; then
fi fi
# Copy the GRUB images to the GRUB directory. # Copy the GRUB images to the GRUB directory.
for file in ${grubdir}/*.mod ${grubdir}/*.lst ${grubdir}/*.img; do for file in ${grubdir}/*.mod ${grubdir}/*.lst ${grubdir}/*.img ${grubdir}/efiemu??.o; do
if test -f $file && [ "`basename $file`" != menu.lst ]; then if test -f $file && [ "`basename $file`" != menu.lst ]; then
rm -f $file || exit 1 rm -f $file || exit 1
fi fi
@ -220,7 +220,7 @@ for file in ${pkglibdir}/*.mod ${pkglibdir}/*.lst; do
cp -f $file ${grubdir} || exit 1 cp -f $file ${grubdir} || exit 1
done done
if [ "${target_cpu}-${platform}" = "i386-pc" ] ; then if [ "${target_cpu}-${platform}" = "i386-pc" ] ; then
for file in ${pkglibdir}/*.img; do for file in ${pkglibdir}/*.img ${pkglibdir}/efiemu??.o; do
cp -f $file ${grubdir} || exit 1 cp -f $file ${grubdir} || exit 1
done done
fi fi

2
util/i386/pc/grub-mkrescue.in
View file

@ -116,7 +116,7 @@ fi
aux_dir=`mktemp -d` aux_dir=`mktemp -d`
mkdir -p ${aux_dir}/boot/grub mkdir -p ${aux_dir}/boot/grub
cp ${input_dir}/*.mod \ cp ${input_dir}/*.mod ${input_dir}/efiemu??.o \
${input_dir}/command.lst ${input_dir}/moddep.lst ${input_dir}/fs.lst \ ${input_dir}/command.lst ${input_dir}/moddep.lst ${input_dir}/fs.lst \
${input_dir}/handler.lst ${input_dir}/parttool.lst \ ${input_dir}/handler.lst ${input_dir}/parttool.lst \
${aux_dir}/boot/grub/ ${aux_dir}/boot/grub/