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Merge branch 'master' of git://git.savannah.gnu.org/grub

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This commit is contained in:
Michael Marineau 2015-12-17 12:01:00 -08:00
commit 286f1b63df
95 changed files with 6481 additions and 522 deletions
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34
grub-core/kern/acpi.c Normal file
View file

@ -0,0 +1,34 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2012 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/types.h>
#include <grub/time.h>
#include <grub/misc.h>
#include <grub/acpi.h>
/* Simple checksum by summing all bytes. Used by ACPI and SMBIOS. */
grub_uint8_t
grub_byte_checksum (void *base, grub_size_t size)
{
grub_uint8_t *ptr;
grub_uint8_t ret = 0;
for (ptr = (grub_uint8_t *) base; ptr < ((grub_uint8_t *) base) + size;
ptr++)
ret += *ptr;
return ret;
}

59
grub-core/kern/efi/acpi.c Normal file
View file

@ -0,0 +1,59 @@
/* acpi.c - get 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/acpi.h>
#include <grub/misc.h>
#include <grub/efi/efi.h>
#include <grub/efi/api.h>
struct grub_acpi_rsdp_v10 *
grub_machine_acpi_get_rsdpv1 (void)
{
unsigned i;
static grub_efi_packed_guid_t acpi_guid = GRUB_EFI_ACPI_TABLE_GUID;
for (i = 0; i < grub_efi_system_table->num_table_entries; i++)
{
grub_efi_packed_guid_t *guid =
&grub_efi_system_table->configuration_table[i].vendor_guid;
if (! grub_memcmp (guid, &acpi_guid, sizeof (grub_efi_packed_guid_t)))
return (struct grub_acpi_rsdp_v10 *)
grub_efi_system_table->configuration_table[i].vendor_table;
}
return 0;
}
struct grub_acpi_rsdp_v20 *
grub_machine_acpi_get_rsdpv2 (void)
{
unsigned i;
static grub_efi_packed_guid_t acpi20_guid = GRUB_EFI_ACPI_20_TABLE_GUID;
for (i = 0; i < grub_efi_system_table->num_table_entries; i++)
{
grub_efi_packed_guid_t *guid =
&grub_efi_system_table->configuration_table[i].vendor_guid;
if (! grub_memcmp (guid, &acpi20_guid, sizeof (grub_efi_packed_guid_t)))
return (struct grub_acpi_rsdp_v20 *)
grub_efi_system_table->configuration_table[i].vendor_table;
}
return 0;
}

58
grub-core/kern/elf.c
View file

@ -28,6 +28,25 @@
GRUB_MOD_LICENSE ("GPLv3+");
#pragma GCC diagnostic ignored "-Wcast-align"
#if defined(__powerpc__) && defined(GRUB_MACHINE_IEEE1275)
#define GRUB_ELF_ENABLE_BI_ENDIAN 1
#else
#define GRUB_ELF_ENABLE_BI_ENDIAN 0
#endif
#if defined(GRUB_CPU_WORDS_BIGENDIAN)
#define GRUB_ELF_NATIVE_ENDIANNESS ELFDATA2MSB
#define GRUB_ELF_OPPOSITE_ENDIANNESS ELFDATA2LSB
#else
#define GRUB_ELF_NATIVE_ENDIANNESS ELFDATA2LSB
#define GRUB_ELF_OPPOSITE_ENDIANNESS ELFDATA2MSB
#endif
static int grub_elf32_check_endianess_and_bswap_ehdr (grub_elf_t elf);
static int grub_elf64_check_endianess_and_bswap_ehdr (grub_elf_t elf);
/* Check if EHDR is a valid ELF header. */
static grub_err_t
grub_elf_check_header (grub_elf_t elf)
@ -38,8 +57,25 @@ grub_elf_check_header (grub_elf_t elf)
|| 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)
|| e->e_ident[EI_VERSION] != EV_CURRENT)
return grub_error (GRUB_ERR_BAD_OS, N_("invalid arch-independent ELF magic"));
if (grub_elf_is_elf32 (elf))
{
if (!grub_elf32_check_endianess_and_bswap_ehdr (elf)) {
return grub_error (GRUB_ERR_BAD_OS, "invalid ELF endianness magic");
}
}
else if (grub_elf_is_elf64 (elf))
{
if (!grub_elf64_check_endianess_and_bswap_ehdr (elf)) {
return grub_error (GRUB_ERR_BAD_OS, "invalid ELF endianness magic");
}
}
else
return grub_error (GRUB_ERR_BAD_OS, "unknown ELF class");
if (e->e_version != EV_CURRENT)
return grub_error (GRUB_ERR_BAD_OS, N_("invalid arch-independent ELF magic"));
return GRUB_ERR_NONE;
@ -117,6 +153,9 @@ grub_elf_open (const char *name)
}
#define grub_swap_bytes_halfXX grub_swap_bytes16
#define grub_swap_bytes_wordXX grub_swap_bytes32
/* 32-bit */
#define ehdrXX ehdr32
#define ELFCLASSXX ELFCLASS32
@ -127,7 +166,12 @@ grub_elf_open (const char *name)
#define grub_elf_is_elfXX grub_elf_is_elf32
#define grub_elfXX_load_phdrs grub_elf32_load_phdrs
#define ElfXX_Phdr Elf32_Phdr
#define ElfXX_Ehdr Elf32_Ehdr
#define grub_uintXX_t grub_uint32_t
#define grub_swap_bytes_addrXX grub_swap_bytes32
#define grub_swap_bytes_offXX grub_swap_bytes32
#define grub_swap_bytes_XwordXX grub_swap_bytes32
#define grub_elfXX_check_endianess_and_bswap_ehdr grub_elf32_check_endianess_and_bswap_ehdr
#include "elfXX.c"
@ -140,7 +184,12 @@ grub_elf_open (const char *name)
#undef grub_elf_is_elfXX
#undef grub_elfXX_load_phdrs
#undef ElfXX_Phdr
#undef ElfXX_Ehdr
#undef grub_uintXX_t
#undef grub_swap_bytes_addrXX
#undef grub_swap_bytes_offXX
#undef grub_swap_bytes_XwordXX
#undef grub_elfXX_check_endianess_and_bswap_ehdr
/* 64-bit */
@ -153,6 +202,11 @@ grub_elf_open (const char *name)
#define grub_elf_is_elfXX grub_elf_is_elf64
#define grub_elfXX_load_phdrs grub_elf64_load_phdrs
#define ElfXX_Phdr Elf64_Phdr
#define ElfXX_Ehdr Elf64_Ehdr
#define grub_uintXX_t grub_uint64_t
#define grub_swap_bytes_addrXX grub_swap_bytes64
#define grub_swap_bytes_offXX grub_swap_bytes64
#define grub_swap_bytes_XwordXX grub_swap_bytes64
#define grub_elfXX_check_endianess_and_bswap_ehdr grub_elf64_check_endianess_and_bswap_ehdr
#include "elfXX.c"

51
grub-core/kern/elfXX.c
View file

@ -31,6 +31,25 @@ grub_elfXX_load_phdrs (grub_elf_t elf)
return grub_errno;
}
#if GRUB_ELF_ENABLE_BI_ENDIAN
if (elf->ehdr.ehdrXX.e_ident[EI_DATA] == GRUB_ELF_OPPOSITE_ENDIANNESS)
{
ElfXX_Phdr *phdr;
for (phdr = elf->phdrs; (char *) phdr < (char *) elf->phdrs + phdrs_size;
phdr = (ElfXX_Phdr *) ((char *) phdr + elf->ehdr.ehdrXX.e_phentsize))
{
phdr->p_type = grub_swap_bytes_wordXX (phdr->p_type);
phdr->p_flags = grub_swap_bytes_wordXX (phdr->p_flags);
phdr->p_offset = grub_swap_bytes_offXX (phdr->p_offset);
phdr->p_vaddr = grub_swap_bytes_addrXX (phdr->p_vaddr);
phdr->p_paddr = grub_swap_bytes_addrXX (phdr->p_paddr);
phdr->p_filesz = grub_swap_bytes_XwordXX (phdr->p_filesz);
phdr->p_memsz = grub_swap_bytes_XwordXX (phdr->p_memsz);
phdr->p_align = grub_swap_bytes_XwordXX (phdr->p_align);
}
}
#endif /* GRUB_ELF_ENABLE_BI_ENDIAN */
return GRUB_ERR_NONE;
}
@ -154,3 +173,35 @@ grub_elfXX_load (grub_elf_t elf, const char *filename,
return grub_errno;
}
static int
grub_elfXX_check_endianess_and_bswap_ehdr (grub_elf_t elf)
{
ElfXX_Ehdr *e = &(elf->ehdr.ehdrXX);
if (e->e_ident[EI_DATA] == GRUB_ELF_NATIVE_ENDIANNESS)
{
return 1;
}
#if GRUB_ELF_ENABLE_BI_ENDIAN
if (e->e_ident[EI_DATA] == GRUB_ELF_OPPOSITE_ENDIANNESS)
{
e->e_type = grub_swap_bytes_halfXX (e->e_type);
e->e_machine = grub_swap_bytes_halfXX (e->e_machine);
e->e_version = grub_swap_bytes_wordXX (e->e_version);
e->e_entry = grub_swap_bytes_addrXX (e->e_entry);
e->e_phoff = grub_swap_bytes_offXX (e->e_phoff);
e->e_shoff = grub_swap_bytes_offXX (e->e_shoff);
e->e_flags = grub_swap_bytes_wordXX (e->e_flags);
e->e_ehsize = grub_swap_bytes_halfXX (e->e_ehsize);
e->e_phentsize = grub_swap_bytes_halfXX (e->e_phentsize);
e->e_phnum = grub_swap_bytes_halfXX (e->e_phnum);
e->e_shentsize = grub_swap_bytes_halfXX (e->e_shentsize);
e->e_shnum = grub_swap_bytes_halfXX (e->e_shnum);
e->e_shstrndx = grub_swap_bytes_halfXX (e->e_shstrndx);
return 1;
}
#endif /* GRUB_ELF_ENABLE_BI_ENDIAN */
return 0;
}

11
grub-core/kern/file.c
View file

@ -89,7 +89,16 @@ grub_file_open (const char *name)
file->device = device;
if (device->disk && file_name[0] != '/')
/* In case of relative pathnames and non-Unix systems (like Windows)
* name of host files may not start with `/'. Blocklists for host files
* are meaningless as well (for a start, host disk does not allow any direct
* access - it is just a marker). So skip host disk in this case.
*/
if (device->disk && file_name[0] != '/'
#if defined(GRUB_UTIL) || defined(GRUB_MACHINE_EMU)
&& grub_strcmp (device->disk->name, "host")
#endif
)
/* This is a block list. */
file->fs = &grub_fs_blocklist;
else

40
grub-core/kern/i386/efi/tsc.c Normal file
View file

@ -0,0 +1,40 @@
/* kern/i386/tsc.c - x86 TSC time source implementation
* Requires Pentium or better x86 CPU that supports the RDTSC instruction.
* This module uses the PIT to calibrate the TSC to
* real time.
*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 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/types.h>
#include <grub/time.h>
#include <grub/misc.h>
#include <grub/i386/tsc.h>
#include <grub/efi/efi.h>
#include <grub/efi/api.h>
int
grub_tsc_calibrate_from_efi (void)
{
grub_uint64_t start_tsc, end_tsc;
/* Use EFI Time Service to calibrate TSC */
start_tsc = grub_get_tsc ();
efi_call_1 (grub_efi_system_table->boot_services->stall, 1000);
end_tsc = grub_get_tsc ();
grub_tsc_rate = grub_divmod64 ((1ULL << 32), end_tsc - start_tsc, 0);
return 1;
}

83
grub-core/kern/i386/pc/acpi.c Normal file
View file

@ -0,0 +1,83 @@
/* acpi.c - get 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/acpi.h>
#include <grub/misc.h>
struct grub_acpi_rsdp_v10 *
grub_machine_acpi_get_rsdpv1 (void)
{
int ebda_len;
grub_uint8_t *ebda, *ptr;
grub_dprintf ("acpi", "Looking for RSDP. Scanning EBDA\n");
ebda = (grub_uint8_t *) ((* ((grub_uint16_t *) 0x40e)) << 4);
ebda_len = * (grub_uint16_t *) ebda;
if (! ebda_len) /* FIXME do we really need this check? */
goto scan_bios;
for (ptr = ebda; ptr < ebda + 0x400; ptr += 16)
if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0
&& grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0
&& ((struct grub_acpi_rsdp_v10 *) ptr)->revision == 0)
return (struct grub_acpi_rsdp_v10 *) ptr;
scan_bios:
grub_dprintf ("acpi", "Looking for RSDP. Scanning BIOS\n");
for (ptr = (grub_uint8_t *) 0xe0000; ptr < (grub_uint8_t *) 0x100000;
ptr += 16)
if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0
&& grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0
&& ((struct grub_acpi_rsdp_v10 *) ptr)->revision == 0)
return (struct grub_acpi_rsdp_v10 *) ptr;
return 0;
}
struct grub_acpi_rsdp_v20 *
grub_machine_acpi_get_rsdpv2 (void)
{
int ebda_len;
grub_uint8_t *ebda, *ptr;
grub_dprintf ("acpi", "Looking for RSDP. Scanning EBDA\n");
ebda = (grub_uint8_t *) ((* ((grub_uint16_t *) 0x40e)) << 4);
ebda_len = * (grub_uint16_t *) ebda;
if (! ebda_len) /* FIXME do we really need this check? */
goto scan_bios;
for (ptr = ebda; ptr < ebda + 0x400; ptr += 16)
if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0
&& grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0
&& ((struct grub_acpi_rsdp_v10 *) ptr)->revision != 0
&& ((struct grub_acpi_rsdp_v20 *) ptr)->length < 1024
&& grub_byte_checksum (ptr, ((struct grub_acpi_rsdp_v20 *) ptr)->length)
== 0)
return (struct grub_acpi_rsdp_v20 *) ptr;
scan_bios:
grub_dprintf ("acpi", "Looking for RSDP. Scanning BIOS\n");
for (ptr = (grub_uint8_t *) 0xe0000; ptr < (grub_uint8_t *) 0x100000;
ptr += 16)
if (grub_memcmp (ptr, GRUB_RSDP_SIGNATURE, GRUB_RSDP_SIGNATURE_SIZE) == 0
&& grub_byte_checksum (ptr, sizeof (struct grub_acpi_rsdp_v10)) == 0
&& ((struct grub_acpi_rsdp_v10 *) ptr)->revision != 0
&& ((struct grub_acpi_rsdp_v20 *) ptr)->length < 1024
&& grub_byte_checksum (ptr, ((struct grub_acpi_rsdp_v20 *) ptr)->length)
== 0)
return (struct grub_acpi_rsdp_v20 *) ptr;
return 0;
}

133
grub-core/kern/i386/tsc.c
View file

@ -1,7 +1,6 @@
/* kern/i386/tsc.c - x86 TSC time source implementation
* Requires Pentium or better x86 CPU that supports the RDTSC instruction.
* This module uses the RTC (via grub_get_rtc()) to calibrate the TSC to
* real time.
* This module calibrates the TSC to real time.
*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 Free Software Foundation, Inc.
@ -25,12 +24,6 @@
#include <grub/misc.h>
#include <grub/i386/tsc.h>
#include <grub/i386/cpuid.h>
#ifdef GRUB_MACHINE_XEN
#include <grub/xen.h>
#else
#include <grub/i386/pit.h>
#endif
#include <grub/cpu/io.h>
/* This defines the value TSC had at the epoch (that is, when we calibrated it). */
static grub_uint64_t tsc_boot_time;
@ -40,66 +33,6 @@ static grub_uint64_t tsc_boot_time;
in 32-bit. */
grub_uint32_t grub_tsc_rate;
/* Read the TSC value, which increments with each CPU clock cycle. */
static __inline grub_uint64_t
grub_get_tsc (void)
{
grub_uint32_t lo, hi;
grub_uint32_t a,b,c,d;
/* The CPUID instruction is a 'serializing' instruction, and
avoids out-of-order execution of the RDTSC instruction. */
grub_cpuid (0,a,b,c,d);
/* Read TSC value. We cannot use "=A", since this would use
%rax on x86_64. */
__asm__ __volatile__ ("rdtsc":"=a" (lo), "=d" (hi));
return (((grub_uint64_t) hi) << 32) | lo;
}
#ifndef GRUB_MACHINE_XEN
static __inline int
grub_cpu_is_tsc_supported (void)
{
grub_uint32_t a,b,c,d;
if (! grub_cpu_is_cpuid_supported ())
return 0;
grub_cpuid(1,a,b,c,d);
return (d & (1 << 4)) != 0;
}
static void
grub_pit_wait (grub_uint16_t tics)
{
/* Disable timer2 gate and speaker. */
grub_outb (grub_inb (GRUB_PIT_SPEAKER_PORT)
& ~ (GRUB_PIT_SPK_DATA | GRUB_PIT_SPK_TMR2),
GRUB_PIT_SPEAKER_PORT);
/* Set tics. */
grub_outb (GRUB_PIT_CTRL_SELECT_2 | GRUB_PIT_CTRL_READLOAD_WORD,
GRUB_PIT_CTRL);
grub_outb (tics & 0xff, GRUB_PIT_COUNTER_2);
grub_outb (tics >> 8, GRUB_PIT_COUNTER_2);
/* Enable timer2 gate, keep speaker disabled. */
grub_outb ((grub_inb (GRUB_PIT_SPEAKER_PORT) & ~ GRUB_PIT_SPK_DATA)
| GRUB_PIT_SPK_TMR2,
GRUB_PIT_SPEAKER_PORT);
/* Wait. */
while ((grub_inb (GRUB_PIT_SPEAKER_PORT) & GRUB_PIT_SPK_TMR2_LATCH) == 0x00);
/* Disable timer2 gate and speaker. */
grub_outb (grub_inb (GRUB_PIT_SPEAKER_PORT)
& ~ (GRUB_PIT_SPK_DATA | GRUB_PIT_SPK_TMR2),
GRUB_PIT_SPEAKER_PORT);
}
#endif
static grub_uint64_t
grub_tsc_get_time_ms (void)
{
@ -110,52 +43,52 @@ grub_tsc_get_time_ms (void)
return ((al * grub_tsc_rate) >> 32) + ah * grub_tsc_rate;
}
#ifndef GRUB_MACHINE_XEN
/* Calibrate the TSC based on the RTC. */
static void
calibrate_tsc (void)
static __inline int
grub_cpu_is_tsc_supported (void)
{
/* First calibrate the TSC rate (relative, not absolute time). */
grub_uint64_t end_tsc;
#ifndef GRUB_MACHINE_XEN
grub_uint32_t a,b,c,d;
if (! grub_cpu_is_cpuid_supported ())
return 0;
tsc_boot_time = grub_get_tsc ();
grub_pit_wait (0xffff);
end_tsc = grub_get_tsc ();
grub_cpuid(1,a,b,c,d);
grub_tsc_rate = 0;
if (end_tsc > tsc_boot_time)
grub_tsc_rate = grub_divmod64 ((55ULL << 32), end_tsc - tsc_boot_time, 0);
if (grub_tsc_rate == 0)
grub_tsc_rate = 5368;/* 800 MHz */
}
return (d & (1 << 4)) != 0;
#else
return 1;
#endif
}
static int
calibrate_tsc_hardcode (void)
{
grub_tsc_rate = 5368;/* 800 MHz */
return 1;
}
void
grub_tsc_init (void)
{
#ifdef GRUB_MACHINE_XEN
grub_uint64_t t;
tsc_boot_time = grub_get_tsc ();
t = grub_xen_shared_info->vcpu_info[0].time.tsc_to_system_mul;
if (grub_xen_shared_info->vcpu_info[0].time.tsc_shift > 0)
t <<= grub_xen_shared_info->vcpu_info[0].time.tsc_shift;
else
t >>= -grub_xen_shared_info->vcpu_info[0].time.tsc_shift;
grub_tsc_rate = grub_divmod64 (t, 1000000, 0);
grub_install_get_time_ms (grub_tsc_get_time_ms);
#else
if (grub_cpu_is_tsc_supported ())
{
calibrate_tsc ();
grub_install_get_time_ms (grub_tsc_get_time_ms);
}
else
if (!grub_cpu_is_tsc_supported ())
{
#if defined (GRUB_MACHINE_PCBIOS) || defined (GRUB_MACHINE_IEEE1275)
grub_install_get_time_ms (grub_rtc_get_time_ms);
#else
grub_fatal ("no TSC found");
#endif
return;
}
tsc_boot_time = grub_get_tsc ();
#ifdef GRUB_MACHINE_XEN
(void) (grub_tsc_calibrate_from_xen () || calibrate_tsc_hardcode());
#elif defined (GRUB_MACHINE_EFI)
(void) (grub_tsc_calibrate_from_pit () || grub_tsc_calibrate_from_pmtimer () || grub_tsc_calibrate_from_efi() || calibrate_tsc_hardcode());
#elif defined (GRUB_MACHINE_COREBOOT)
(void) (grub_tsc_calibrate_from_pmtimer () || grub_tsc_calibrate_from_pit () || calibrate_tsc_hardcode());
#else
(void) (grub_tsc_calibrate_from_pit () || calibrate_tsc_hardcode());
#endif
grub_install_get_time_ms (grub_tsc_get_time_ms);
}

84
grub-core/kern/i386/tsc_pit.c Normal file
View file

@ -0,0 +1,84 @@
/* kern/i386/tsc.c - x86 TSC time source implementation
* Requires Pentium or better x86 CPU that supports the RDTSC instruction.
* This module uses the PIT to calibrate the TSC to
* real time.
*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 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/types.h>
#include <grub/time.h>
#include <grub/misc.h>
#include <grub/i386/tsc.h>
#include <grub/i386/pit.h>
#include <grub/cpu/io.h>
static int
grub_pit_wait (void)
{
int ret = 0;
/* Disable timer2 gate and speaker. */
grub_outb (grub_inb (GRUB_PIT_SPEAKER_PORT)
& ~ (GRUB_PIT_SPK_DATA | GRUB_PIT_SPK_TMR2),
GRUB_PIT_SPEAKER_PORT);
/* Set tics. */
grub_outb (GRUB_PIT_CTRL_SELECT_2 | GRUB_PIT_CTRL_READLOAD_WORD,
GRUB_PIT_CTRL);
/* 0xffff ticks: 55ms. */
grub_outb (0xff, GRUB_PIT_COUNTER_2);
grub_outb (0xff, GRUB_PIT_COUNTER_2);
/* Enable timer2 gate, keep speaker disabled. */
grub_outb ((grub_inb (GRUB_PIT_SPEAKER_PORT) & ~ GRUB_PIT_SPK_DATA)
| GRUB_PIT_SPK_TMR2,
GRUB_PIT_SPEAKER_PORT);
if ((grub_inb (GRUB_PIT_SPEAKER_PORT) & GRUB_PIT_SPK_TMR2_LATCH) == 0x00) {
ret = 1;
/* Wait. */
while ((grub_inb (GRUB_PIT_SPEAKER_PORT) & GRUB_PIT_SPK_TMR2_LATCH) == 0x00);
}
/* Disable timer2 gate and speaker. */
grub_outb (grub_inb (GRUB_PIT_SPEAKER_PORT)
& ~ (GRUB_PIT_SPK_DATA | GRUB_PIT_SPK_TMR2),
GRUB_PIT_SPEAKER_PORT);
return ret;
}
/* Calibrate the TSC based on the RTC. */
int
grub_tsc_calibrate_from_pit (void)
{
/* First calibrate the TSC rate (relative, not absolute time). */
grub_uint64_t start_tsc, end_tsc;
start_tsc = grub_get_tsc ();
if (!grub_pit_wait ())
return 0;
end_tsc = grub_get_tsc ();
grub_tsc_rate = 0;
if (end_tsc > start_tsc)
grub_tsc_rate = grub_divmod64 ((55ULL << 32), end_tsc - start_tsc, 0);
if (grub_tsc_rate == 0)
return 0;
return 1;
}

160
grub-core/kern/i386/tsc_pmtimer.c Normal file
View file

@ -0,0 +1,160 @@
/* kern/i386/tsc.c - x86 TSC time source implementation
* Requires Pentium or better x86 CPU that supports the RDTSC instruction.
* This module uses the PIT to calibrate the TSC to
* real time.
*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 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/types.h>
#include <grub/time.h>
#include <grub/misc.h>
#include <grub/i386/tsc.h>
#include <grub/acpi.h>
#include <grub/cpu/io.h>
static void *
grub_acpi_rsdt_find_table (struct grub_acpi_table_header *rsdt, const char *sig)
{
grub_size_t s;
grub_uint32_t *ptr;
if (!rsdt)
return 0;
if (grub_memcmp (rsdt->signature, "RSDT", 4) != 0)
return 0;
ptr = (grub_uint32_t *) (rsdt + 1);
s = (rsdt->length - sizeof (*rsdt)) / sizeof (grub_uint32_t);
for (; s; s--, ptr++)
{
struct grub_acpi_table_header *tbl;
tbl = (struct grub_acpi_table_header *) (grub_addr_t) *ptr;
if (grub_memcmp (tbl->signature, sig, 4) == 0)
return tbl;
}
return 0;
}
static void *
grub_acpi_xsdt_find_table (struct grub_acpi_table_header *xsdt, const char *sig)
{
grub_size_t s;
grub_uint64_t *ptr;
if (!xsdt)
return 0;
if (grub_memcmp (xsdt->signature, "XSDT", 4) != 0)
return 0;
ptr = (grub_uint64_t *) (xsdt + 1);
s = (xsdt->length - sizeof (*xsdt)) / sizeof (grub_uint32_t);
for (; s; s--, ptr++)
{
struct grub_acpi_table_header *tbl;
#if GRUB_CPU_SIZEOF_VOID_P != 8
if (*ptr >> 32)
continue;
#endif
tbl = (struct grub_acpi_table_header *) (grub_addr_t) *ptr;
if (grub_memcmp (tbl->signature, sig, 4) == 0)
return tbl;
}
return 0;
}
struct grub_acpi_fadt *
grub_acpi_find_fadt (void)
{
struct grub_acpi_fadt *fadt = 0;
struct grub_acpi_rsdp_v10 *rsdpv1;
struct grub_acpi_rsdp_v20 *rsdpv2;
rsdpv1 = grub_machine_acpi_get_rsdpv1 ();
if (rsdpv1)
fadt = grub_acpi_rsdt_find_table ((struct grub_acpi_table_header *)
(grub_addr_t) rsdpv1->rsdt_addr,
GRUB_ACPI_FADT_SIGNATURE);
if (fadt)
return fadt;
rsdpv2 = grub_machine_acpi_get_rsdpv2 ();
if (rsdpv2)
fadt = grub_acpi_rsdt_find_table ((struct grub_acpi_table_header *)
(grub_addr_t) rsdpv2->rsdpv1.rsdt_addr,
GRUB_ACPI_FADT_SIGNATURE);
if (fadt)
return fadt;
if (rsdpv2
#if GRUB_CPU_SIZEOF_VOID_P != 8
&& !(rsdpv2->xsdt_addr >> 32)
#endif
)
fadt = grub_acpi_xsdt_find_table ((struct grub_acpi_table_header *)
(grub_addr_t) rsdpv2->xsdt_addr,
GRUB_ACPI_FADT_SIGNATURE);
if (fadt)
return fadt;
return 0;
}
int
grub_tsc_calibrate_from_pmtimer (void)
{
grub_uint32_t start;
grub_uint32_t last;
grub_uint32_t cur, end;
struct grub_acpi_fadt *fadt;
grub_port_t p;
grub_uint64_t start_tsc;
grub_uint64_t end_tsc;
int num_iter = 0;
fadt = grub_acpi_find_fadt ();
if (!fadt)
return 0;
p = fadt->pmtimer;
if (!p)
return 0;
start = grub_inl (p) & 0xffffff;
last = start;
/* It's 3.579545 MHz clock. Wait 1 ms. */
end = start + 3580;
start_tsc = grub_get_tsc ();
while (1)
{
cur = grub_inl (p) & 0xffffff;
if (cur < last)
cur |= 0x1000000;
num_iter++;
if (cur >= end)
{
end_tsc = grub_get_tsc ();
grub_tsc_rate = grub_divmod64 ((1ULL << 32), end_tsc - start_tsc, 0);
return 1;
}
/* Check for broken PM timer.
50000000 TSCs is between 5 ms (10GHz) and 200 ms (250 MHz)
if after this time we still don't have 1 ms on pmtimer, then
pmtimer is broken.
*/
if ((num_iter & 0xffffff) == 0 && grub_get_tsc () - start_tsc > 5000000) {
return 0;
}
}
}

40
grub-core/kern/i386/xen/tsc.c Normal file
View file

@ -0,0 +1,40 @@
/* kern/i386/tsc.c - x86 TSC time source implementation
* Requires Pentium or better x86 CPU that supports the RDTSC instruction.
* This module uses the PIT to calibrate the TSC to
* real time.
*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 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/types.h>
#include <grub/time.h>
#include <grub/misc.h>
#include <grub/i386/tsc.h>
#include <grub/xen.h>
int
grub_tsc_calibrate_from_xen (void)
{
grub_uint64_t t;
t = grub_xen_shared_info->vcpu_info[0].time.tsc_to_system_mul;
if (grub_xen_shared_info->vcpu_info[0].time.tsc_shift > 0)
t <<= grub_xen_shared_info->vcpu_info[0].time.tsc_shift;
else
t >>= -grub_xen_shared_info->vcpu_info[0].time.tsc_shift;
grub_tsc_rate = grub_divmod64 (t, 1000000, 0);
return 1;
}

2
grub-core/kern/ieee1275/init.c
View file

@ -166,7 +166,7 @@ heap_init (grub_uint64_t addr, grub_uint64_t len, grub_memory_type_t type,
{
unsigned long *total = data;
if (type != 1)
if (type != GRUB_MEMORY_AVAILABLE)
return 0;
if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_NO_PRE1_5M_CLAIM))

4
grub-core/kern/mips/dl.c
View file

@ -138,6 +138,10 @@ grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr,
sym = (Elf_Sym *) ((char *) mod->symtab
+ mod->symsize * ELF_R_SYM (rel->r_info));
sym_value = sym->st_value;
if (s->sh_type == SHT_RELA)
{
sym_value += ((Elf_Rela *) rel)->r_addend;
}
if (sym_value == (grub_addr_t) &__gnu_local_gp_dummy)
sym_value = (grub_addr_t) mod->got;
else if (sym_value == (grub_addr_t) &_gp_disp_dummy)

5
grub-core/kern/mips/startup.S
View file

@ -22,6 +22,7 @@
#include <grub/machine/memory.h>
#include <grub/machine/kernel.h>
#include <grub/offsets.h>
#include <grub/mips/asm.h>
#define BASE_ADDR 8
@ -95,8 +96,8 @@ cont:
modulesmovcont:
beq $t3, $0, modulesmovdone
nop
lb $t4, 0($t2)
sb $t4, 0($t1)
lb GRUB_ASM_T4, 0($t2)
sb GRUB_ASM_T4, 0($t1)
addiu $t2, $t2, -1
addiu $t1, $t1, -1
b modulesmovcont

1
grub-core/kern/parser.c
View file

@ -268,6 +268,7 @@ grub_parser_execute (char *source)
grub_parser_execute_getline (&line, 0, &source);
grub_rescue_parse_line (line, grub_parser_execute_getline, &source);
grub_free (line);
grub_print_error ();
}
return grub_errno;