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2009-05-03 Bean <bean123ch@gmail.com> Vladimir Serbinenko <phcoder@gmail.com> 

FreeBSD 64-bit support

	* conf/i386-pc.rmk (bsd_mod_SOURCES): add loader/i386/bsd_helper.S 
	and loader/i386/bsd_trampoline.S
	(bsd_mod_ASFLAGS): new variable
	* include/grub/i386/bsd.h (FREEBSD_MODINFOMD_SMAP): new definition
	(FREEBSD_MODTYPE_KERNEL64): likewise
	(grub_bsd64_trampoline_start): likewise
	(grub_bsd64_trampoline_end): likewise
	(grub_bsd64_trampoline_selfjump): likewise
	(grub_bsd64_trampoline_gdt): likewise
	* include/grub/i386/loader.h (grub_unix_real_boot): moved from here ...
	* include/grub/i386/bsd.h (grub_unix_real_boot): ... moved here
	* kern/i386/loader.S (grub_unix_real_boot): moved from here ...
	* loader/i386/bsd_helper.S (grub_unix_real_boot): moved here
	* include/grub/gpt_partition.h (grub_gpt_partentry): Corrected the type 
	of "attrib" member
	* loader/i386/bsd_pagetable.c: new file
	* loader/i386/bsd_trampoline.S: likewise
	* loader/i386/bsd.c (ALIGN_QWORD): new macro
	(ALIGN_VAR): likewise
	(entry_hi): new variable
	(kern_end_mdofs): likewise
	(is_64bit): likewise
	(grub_freebsd_add_meta): use ALIGN_VAR
	(grub_e820_mmap): new declaration
	(grub_freebsd_add_mmap): new function
	(grub_freebsd_add_meta_module): support 64 bit kernels
	(grub_freebsd_list_modules): use ALIGN_VAR
	(gdt_descriptor): new declaration
	(grub_freebsd_boot): support 64 bit kernels
	(grub_bsd_elf64_hook): new function
	(grub_bsd_load_elf): support elf64
This commit is contained in:
phcoder 2009-05-03 09:03:31 +00:00
parent 038c5720de
commit cef17233d4
6 changed files with 310 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
ChangeLog
View File

@ -1,3 +1,39 @@
2009-05-03 Bean <bean123ch@gmail.com> Vladimir Serbinenko <phcoder@gmail.com>
FreeBSD 64-bit support
* conf/i386-pc.rmk (bsd_mod_SOURCES): add loader/i386/bsd_helper.S
and loader/i386/bsd_trampoline.S
(bsd_mod_ASFLAGS): new variable
* include/grub/i386/bsd.h (FREEBSD_MODINFOMD_SMAP): new definition
(FREEBSD_MODTYPE_KERNEL64): likewise
(grub_bsd64_trampoline_start): likewise
(grub_bsd64_trampoline_end): likewise
(grub_bsd64_trampoline_selfjump): likewise
(grub_bsd64_trampoline_gdt): likewise
* include/grub/i386/loader.h (grub_unix_real_boot): moved from here ...
* include/grub/i386/bsd.h (grub_unix_real_boot): ... moved here
* kern/i386/loader.S (grub_unix_real_boot): moved from here ...
* loader/i386/bsd_helper.S (grub_unix_real_boot): moved here
* include/grub/gpt_partition.h (grub_gpt_partentry): Corrected the type
of "attrib" member
* loader/i386/bsd_pagetable.c: new file
* loader/i386/bsd_trampoline.S: likewise
* loader/i386/bsd.c (ALIGN_QWORD): new macro
(ALIGN_VAR): likewise
(entry_hi): new variable
(kern_end_mdofs): likewise
(is_64bit): likewise
(grub_freebsd_add_meta): use ALIGN_VAR
(grub_e820_mmap): new declaration
(grub_freebsd_add_mmap): new function
(grub_freebsd_add_meta_module): support 64 bit kernels
(grub_freebsd_list_modules): use ALIGN_VAR
(gdt_descriptor): new declaration
(grub_freebsd_boot): support 64 bit kernels
(grub_bsd_elf64_hook): new function
(grub_bsd_load_elf): support elf64
2009-05-03 Bean <bean123ch@gmail.com>
* script/sh/execute.c (grub_script_execute_cmdif): Reset grub_errno

3
conf/i386-pc.rmk
View File

@ -313,9 +313,10 @@ aout_mod_CFLAGS = $(COMMON_CFLAGS)
aout_mod_LDFLAGS = $(COMMON_LDFLAGS)
# For bsd.mod
bsd_mod_SOURCES = loader/i386/bsd.c
bsd_mod_SOURCES = loader/i386/bsd.c loader/i386/bsd_helper.S loader/i386/bsd_trampoline.S
bsd_mod_CFLAGS = $(COMMON_CFLAGS)
bsd_mod_LDFLAGS = $(COMMON_LDFLAGS)
bsd_mod_ASFLAGS = $(COMMON_ASFLAGS)
# For usb.mod
usb_mod_SOURCES = bus/usb/usb.c bus/usb/usbtrans.c bus/usb/usbhub.c

10
include/grub/i386/bsd.h
View File

@ -80,9 +80,12 @@
#define FREEBSD_MODINFOMD_SHDR 0x0009 /* section header table */
#define FREEBSD_MODINFOMD_NOCOPY 0x8000 /* don't copy this metadata to the kernel */
#define FREEBSD_MODINFOMD_SMAP 0x1001
#define FREEBSD_MODINFOMD_DEPLIST (0x4001 | FREEBSD_MODINFOMD_NOCOPY) /* depends on */
#define FREEBSD_MODTYPE_KERNEL "elf kernel"
#define FREEBSD_MODTYPE_KERNEL64 "elf64 kernel"
#define FREEBSD_MODTYPE_MODULE "elf module"
#define FREEBSD_MODTYPE_RAW "raw"
@ -224,4 +227,11 @@ struct grub_netbsd_btinfo_bootdisk
int partition;
};
void grub_unix_real_boot (grub_addr_t entry, ...)
__attribute__ ((cdecl,noreturn));
extern grub_uint8_t grub_bsd64_trampoline_start, grub_bsd64_trampoline_end;
extern grub_uint32_t grub_bsd64_trampoline_selfjump;
extern grub_uint32_t grub_bsd64_trampoline_gdt;
#endif /* ! GRUB_BSD_CPU_HEADER */

3
include/grub/i386/loader.h
View File

@ -32,7 +32,4 @@ extern grub_size_t EXPORT_VAR(grub_os_area_size);
grub_err_t EXPORT_FUNC(grub_linux16_boot) (void);
void EXPORT_FUNC(grub_unix_real_boot) (grub_addr_t entry, ...)
__attribute__ ((cdecl,noreturn));
#endif /* ! GRUB_LOADER_CPU_HEADER */

22
kern/i386/loader.S
View File

@ -118,25 +118,3 @@ linux_setup_seg:
.word 0
.code32
/*
* Use cdecl calling convention for *BSD kernels.
*/
FUNCTION(grub_unix_real_boot)
call EXT_C(grub_dl_unload_all)
/* Interrupts should be disabled. */
cli
/* Discard `grub_unix_real_boot' return address. */
popl %eax
/* Fetch `entry' address ... */
popl %eax
/*
* ... and put our return address in its place. The kernel will
* ignore it, but it expects %esp to point to it.
*/
call *%eax

275
loader/i386/bsd.c
View File

@ -1,6 +1,6 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 Free Software Foundation, Inc.
* Copyright (C) 2008, 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
@ -21,6 +21,8 @@
#include <grub/cpu/bsd.h>
#include <grub/machine/init.h>
#include <grub/machine/memory.h>
#include <grub/memory.h>
#include <grub/machine/machine.h>
#include <grub/file.h>
#include <grub/err.h>
#include <grub/dl.h>
@ -33,17 +35,19 @@
#include <grub/command.h>
#define ALIGN_DWORD(a) ALIGN_UP (a, 4)
#define ALIGN_QWORD(a) ALIGN_UP (a, 8)
#define ALIGN_VAR(a) ((is_64bit) ? (ALIGN_QWORD(a)) : (ALIGN_DWORD(a)))
#define ALIGN_PAGE(a) ALIGN_UP (a, 4096)
#define MOD_BUF_ALLOC_UNIT 4096
static int kernel_type;
static grub_dl_t my_mod;
static grub_addr_t entry, kern_start, kern_end;
static grub_addr_t entry, entry_hi, kern_start, kern_end;
static grub_uint32_t bootflags;
static char *mod_buf;
static grub_uint32_t mod_buf_len, mod_buf_max;
static int is_elf_kernel;
static grub_uint32_t mod_buf_len, mod_buf_max, kern_end_mdofs;
static int is_elf_kernel, is_64bit;
static const char freebsd_opts[] = "DhaCcdgmnpqrsv";
static const grub_uint32_t freebsd_flags[] =
@ -135,11 +139,121 @@ grub_freebsd_add_meta (grub_uint32_t type, void *data, grub_uint32_t len)
if (len)
grub_memcpy (mod_buf + mod_buf_len, data, len);
mod_buf_len = ALIGN_DWORD (mod_buf_len + len);
mod_buf_len = ALIGN_VAR (mod_buf_len + len);
return GRUB_ERR_NONE;
}
struct grub_e820_mmap
{
grub_uint64_t addr;
grub_uint64_t size;
grub_uint32_t type;
} __attribute__((packed));
#define GRUB_E820_RAM 1
#define GRUB_E820_RESERVED 2
#define GRUB_E820_ACPI 3
#define GRUB_E820_NVS 4
#define GRUB_E820_EXEC_CODE 5
static grub_err_t
grub_freebsd_add_mmap (void)
{
grub_size_t len = 0;
struct grub_e820_mmap *mmap_buf = 0;
struct grub_e820_mmap *mmap = 0;
int isfirstrun = 1;
auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t size,
grub_uint32_t type)
{
/* FreeBSD assumes that first 64KiB are available.
Not always true but try to prevent panic somehow. */
if (isfirstrun && addr != 0)
{
if (mmap)
{
mmap->addr = 0;
mmap->size = (addr < 0x10000) ? addr : 0x10000;
mmap->type = GRUB_E820_RAM;
mmap++;
}
else
len += sizeof (struct grub_e820_mmap);
}
isfirstrun = 0;
if (mmap)
{
mmap->addr = addr;
mmap->size = size;
switch (type)
{
case GRUB_MACHINE_MEMORY_AVAILABLE:
mmap->type = GRUB_E820_RAM;
break;
#ifdef GRUB_MACHINE_MEMORY_ACPI
case GRUB_MACHINE_MEMORY_ACPI:
mmap->type = GRUB_E820_ACPI;
break;
#endif
#ifdef GRUB_MACHINE_MEMORY_NVS
case GRUB_MACHINE_MEMORY_NVS:
mmap->type = GRUB_E820_NVS;
break;
#endif
default:
#ifdef GRUB_MACHINE_MEMORY_CODE
case GRUB_MACHINE_MEMORY_CODE:
#endif
#ifdef GRUB_MACHINE_MEMORY_RESERVED
case GRUB_MACHINE_MEMORY_RESERVED:
#endif
mmap->type = GRUB_E820_RESERVED;
break;
}
/* Merge regions if possible. */
if (mmap != mmap_buf && mmap->type == mmap[-1].type &&
mmap->addr == mmap[-1].addr + mmap[-1].size)
mmap[-1].size += mmap->size;
else
mmap++;
}
else
len += sizeof (struct grub_e820_mmap);
return 0;
}
grub_mmap_iterate (hook);
mmap_buf = mmap = grub_malloc (len);
if (! mmap)
return grub_errno;
isfirstrun = 1;
grub_mmap_iterate (hook);
len = (mmap - mmap_buf) * sizeof (struct grub_e820_mmap);
int i;
for (i = 0; i < mmap - mmap_buf; i++)
grub_dprintf ("bsd", "smap %d, %d:%llx - %llx\n", i,
mmap_buf[i].type,
(unsigned long long) mmap_buf[i].addr,
(unsigned long long) mmap_buf[i].size);
grub_dprintf ("bsd", "%d entries in smap\n", mmap - mmap_buf);
grub_freebsd_add_meta (FREEBSD_MODINFO_METADATA |
FREEBSD_MODINFOMD_SMAP, mmap_buf, len);
grub_free (mmap_buf);
return grub_errno;
}
static grub_err_t
grub_freebsd_add_meta_module (int is_kern, int argc, char **argv,
grub_addr_t addr, grub_uint32_t size)
@ -166,13 +280,31 @@ grub_freebsd_add_meta_module (int is_kern, int argc, char **argv,
argv++;
}
else
type = (is_kern) ? FREEBSD_MODTYPE_KERNEL : FREEBSD_MODTYPE_RAW;
type = ((is_kern) ?
((is_64bit) ? FREEBSD_MODTYPE_KERNEL64 : FREEBSD_MODTYPE_KERNEL)
: FREEBSD_MODTYPE_RAW);
if ((grub_freebsd_add_meta (FREEBSD_MODINFO_TYPE, type,
if (is_64bit)
{
grub_uint64_t addr64 = addr, size64 = size;
if ((grub_freebsd_add_meta (FREEBSD_MODINFO_TYPE, type,
grub_strlen (type) + 1)) ||
(grub_freebsd_add_meta (FREEBSD_MODINFO_ADDR, &addr, sizeof (addr))) ||
(grub_freebsd_add_meta (FREEBSD_MODINFO_SIZE, &size, sizeof (size))))
return grub_errno;
(grub_freebsd_add_meta (FREEBSD_MODINFO_ADDR, &addr64,
sizeof (addr64))) ||
(grub_freebsd_add_meta (FREEBSD_MODINFO_SIZE, &size64,
sizeof (size64))))
return grub_errno;
}
else
{
if ((grub_freebsd_add_meta (FREEBSD_MODINFO_TYPE, type,
grub_strlen (type) + 1)) ||
(grub_freebsd_add_meta (FREEBSD_MODINFO_ADDR, &addr,
sizeof (addr))) ||
(grub_freebsd_add_meta (FREEBSD_MODINFO_SIZE, &size,
sizeof (size))))
return grub_errno;
}
if (argc)
{
@ -202,6 +334,23 @@ grub_freebsd_add_meta_module (int is_kern, int argc, char **argv,
}
}
if (is_kern)
{
int len = (is_64bit) ? 8 : 4;
grub_uint64_t data = 0;
if ((grub_freebsd_add_meta (FREEBSD_MODINFO_METADATA |
FREEBSD_MODINFOMD_HOWTO, &data, 4)) ||
(grub_freebsd_add_meta (FREEBSD_MODINFO_METADATA |
FREEBSD_MODINFOMD_ENVP, &data, len)) ||
(grub_freebsd_add_meta (FREEBSD_MODINFO_METADATA |
FREEBSD_MODINFOMD_KERNEND, &data, len)))
return grub_errno;
kern_end_mdofs = mod_buf_len - len;
return grub_freebsd_add_mmap ();
}
return GRUB_ERR_NONE;
}
@ -241,10 +390,19 @@ grub_freebsd_list_modules (void)
}
}
pos = ALIGN_DWORD (pos + size);
pos = ALIGN_VAR (pos + size);
}
}
/* This function would be here but it's under different licence. */
#include "bsd_pagetable.c"
struct gdt_descriptor
{
grub_uint16_t limit;
void *base;
} __attribute__ ((packed));
static grub_err_t
grub_freebsd_boot (void)
{
@ -291,6 +449,9 @@ grub_freebsd_boot (void)
if (is_elf_kernel)
{
grub_addr_t md_ofs;
int ofs;
if (grub_freebsd_add_meta (FREEBSD_MODINFO_END, 0, 0))
return grub_errno;
@ -298,12 +459,70 @@ grub_freebsd_boot (void)
bi.bi_modulep = kern_end;
kern_end = ALIGN_PAGE (kern_end + mod_buf_len);
if (is_64bit)
kern_end += 4096 * 4;
md_ofs = bi.bi_modulep + kern_end_mdofs;
ofs = (is_64bit) ? 16 : 12;
*((grub_uint32_t *) md_ofs) = kern_end;
md_ofs -= ofs;
*((grub_uint32_t *) md_ofs) = bi.bi_envp;
md_ofs -= ofs;
*((grub_uint32_t *) md_ofs) = bootflags;
}
bi.bi_kernend = kern_end;
grub_unix_real_boot (entry, bootflags | FREEBSD_RB_BOOTINFO, bootdev,
0, 0, 0, &bi, bi.bi_modulep, kern_end);
if (is_64bit)
{
grub_uint32_t *gdt;
grub_uint8_t *trampoline;
void (*launch_trampoline) (grub_addr_t entry, ...)
__attribute__ ((cdecl, regparm (0)));
grub_uint8_t *pagetable;
struct gdt_descriptor *gdtdesc;
pagetable = (grub_uint8_t *) (kern_end - 16384);
fill_bsd64_pagetable (pagetable);
/* Create GDT. */
gdt = (grub_uint32_t *) (kern_end - 4096);
gdt[0] = 0;
gdt[1] = 0;
gdt[2] = 0;
gdt[3] = 0x00209800;
gdt[4] = 0;
gdt[5] = 0x00008000;
/* Create GDT descriptor. */
gdtdesc = (struct gdt_descriptor *) (kern_end - 4096 + 24);
gdtdesc->limit = 24;
gdtdesc->base = gdt;
/* Prepare trampoline. */
trampoline = (grub_uint8_t *) (kern_end - 4096 + 24
+ sizeof (struct gdt_descriptor));
launch_trampoline = (void __attribute__ ((cdecl, regparm (0)))
(*) (grub_addr_t entry, ...)) trampoline;
grub_bsd64_trampoline_gdt = (grub_uint32_t) gdtdesc;
grub_bsd64_trampoline_selfjump
= (grub_uint32_t) (trampoline + 6
+ ((grub_uint8_t *) &grub_bsd64_trampoline_selfjump
- &grub_bsd64_trampoline_start));
/* Copy trampoline. */
grub_memcpy (trampoline, &grub_bsd64_trampoline_start,
&grub_bsd64_trampoline_end - &grub_bsd64_trampoline_start);
/* Launch trampoline. */
launch_trampoline (entry, entry_hi, pagetable, bi.bi_modulep,
kern_end);
}
else
grub_unix_real_boot (entry, bootflags | FREEBSD_RB_BOOTINFO, bootdev,
0, 0, 0, &bi, bi.bi_modulep, kern_end);
/* Not reached. */
return GRUB_ERR_NONE;
@ -485,6 +704,29 @@ grub_bsd_elf32_hook (Elf32_Phdr * phdr, grub_addr_t * addr)
return GRUB_ERR_NONE;
}
static grub_err_t
grub_bsd_elf64_hook (Elf64_Phdr * phdr, grub_addr_t * addr)
{
Elf64_Addr paddr;
paddr = phdr->p_paddr & 0xffffff;
if ((paddr < grub_os_area_addr)
|| (paddr + phdr->p_memsz > grub_os_area_addr + grub_os_area_size))
return grub_error (GRUB_ERR_OUT_OF_RANGE, "Address 0x%x is out of range",
paddr);
if ((!kern_start) || (paddr < kern_start))
kern_start = paddr;
if (paddr + phdr->p_memsz > kern_end)
kern_end = paddr + phdr->p_memsz;
*addr = paddr;
return GRUB_ERR_NONE;
}
static grub_err_t
grub_bsd_load_elf (grub_elf_t elf)
{
@ -495,6 +737,13 @@ grub_bsd_load_elf (grub_elf_t elf)
entry = elf->ehdr.ehdr32.e_entry & 0xFFFFFF;
return grub_elf32_load (elf, grub_bsd_elf32_hook, 0, 0);
}
else if (grub_elf_is_elf64 (elf))
{
is_64bit = 1;
entry = elf->ehdr.ehdr64.e_entry & 0xffffffff;
entry_hi = (elf->ehdr.ehdr64.e_entry >> 32) & 0xffffffff;
return grub_elf64_load (elf, grub_bsd_elf64_hook, 0, 0);
}
else
return grub_error (GRUB_ERR_BAD_OS, "invalid elf");
}