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2010-11-08 Manoel Rebelo Abranches <mrabran@br.ibm.com> 

* include/grub/elfload.h (grub_elf32_size): New parameter. All users updated.
        Return maximum segments alignment.
        (grub_elf64_size): Likewise.
        * kern/elf.c (grub_elf32_size): New parameter. All users updated.
        Return maximum segments alignment.
        (grub_elf64_size): Likewise.
        * grub-core/loader/powerpc/ieee1275/linux.c:
        (grub_linux_claimmap_iterate): New function. Uses the "available"property
        in the "memory" node for memory allocation for kernel in the PowerPC loader.
        (grub_linux_load32): Correctly find linux entry point offset.
        (grub_linux_load64): Likewise.
This commit is contained in:
Manoel Rebelo Abranches 2010-11-08 11:14:54 -02:00
parent d2bf06bf34
commit 9c4cf53bfe
6 changed files with 110 additions and 67 deletions
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14
ChangeLog
View File

@ -1,3 +1,17 @@
2010-11-08 Manoel Rebelo Abranches <mrabran@br.ibm.com>
* include/grub/elfload.h (grub_elf32_size): New parameter. All users updated.
Return maximum segments alignment.
(grub_elf64_size): Likewise.
* kern/elf.c (grub_elf32_size): New parameter. All users updated.
Return maximum segments alignment.
(grub_elf64_size): Likewise.
* grub-core/loader/powerpc/ieee1275/linux.c:
(grub_linux_claimmap_iterate): New function. Uses the "available"property
in the "memory" node for memory allocation for kernel in the PowerPC loader.
(grub_linux_load32): Correctly find linux entry point offset.
(grub_linux_load64): Likewise.
2010-11-07 Robert Millan <rmh@gnu.org>
On mips-yeeloong, build with -march=loongson2f when this flag is

20
grub-core/kern/elf.c
View File

@ -171,11 +171,12 @@ grub_elf32_phdr_iterate (grub_elf_t elf,
/* Calculate the amount of memory spanned by the segments. */
grub_size_t
grub_elf32_size (grub_elf_t elf, Elf32_Addr *base)
grub_elf32_size (grub_elf_t elf, Elf32_Addr *base, grub_uint32_t *max_align)
{
Elf32_Addr segments_start = (Elf32_Addr) -1;
Elf32_Addr segments_end = 0;
int nr_phdrs = 0;
grub_uint32_t curr_align = 1;
/* Run through the program headers to calculate the total memory size we
* should claim. */
@ -192,6 +193,8 @@ grub_elf32_size (grub_elf_t elf, Elf32_Addr *base)
segments_start = phdr->p_paddr;
if (phdr->p_paddr + phdr->p_memsz > segments_end)
segments_end = phdr->p_paddr + phdr->p_memsz;
if (curr_align < phdr->p_align)
curr_align = phdr->p_align;
return 0;
}
@ -215,7 +218,8 @@ grub_elf32_size (grub_elf_t elf, Elf32_Addr *base)
if (base)
*base = segments_start;
if (max_align)
*max_align = curr_align;
return segments_end - segments_start;
}
@ -290,7 +294,6 @@ grub_elf32_load (grub_elf_t _elf, grub_elf32_load_hook_t _load_hook,
return err;
}
/* 64-bit */
@ -357,16 +360,17 @@ grub_elf64_phdr_iterate (grub_elf_t elf,
/* Calculate the amount of memory spanned by the segments. */
grub_size_t
grub_elf64_size (grub_elf_t elf, Elf64_Addr *base)
grub_elf64_size (grub_elf_t elf, Elf64_Addr *base, grub_uint64_t *max_align)
{
Elf64_Addr segments_start = (Elf64_Addr) -1;
Elf64_Addr segments_end = 0;
int nr_phdrs = 0;
grub_uint64_t curr_align = 1;
/* Run through the program headers to calculate the total memory size we
* should claim. */
auto int NESTED_FUNC_ATTR calcsize (grub_elf_t _elf, Elf64_Phdr *phdr, void *_arg);
int NESTED_FUNC_ATTR calcsize (grub_elf_t _elf __attribute__ ((unused)),
int NESTED_FUNC_ATTR calcsize (grub_elf_t _elf __attribute__ ((unused)),
Elf64_Phdr *phdr,
void *_arg __attribute__ ((unused)))
{
@ -378,6 +382,8 @@ grub_elf64_size (grub_elf_t elf, Elf64_Addr *base)
segments_start = phdr->p_paddr;
if (phdr->p_paddr + phdr->p_memsz > segments_end)
segments_end = phdr->p_paddr + phdr->p_memsz;
if (curr_align < phdr->p_align)
curr_align = phdr->p_align;
return 0;
}
@ -401,11 +407,11 @@ grub_elf64_size (grub_elf_t elf, Elf64_Addr *base)
if (base)
*base = segments_start;
if (max_align)
*max_align = curr_align;
return segments_end - segments_start;
}
/* Load every loadable segment into memory specified by `_load_hook'. */
grub_err_t
grub_elf64_load (grub_elf_t _elf, grub_elf64_load_hook_t _load_hook,

4
grub-core/loader/mips/linux.c
View File

@ -91,7 +91,7 @@ grub_linux_load32 (grub_elf_t elf, void **extra_mem, grub_size_t extra_size)
/* Linux's entry point incorrectly contains a virtual address. */
entry_addr = elf->ehdr.ehdr32.e_entry;
linux_size = grub_elf32_size (elf, &base);
linux_size = grub_elf32_size (elf, &base, 0);
if (linux_size == 0)
return grub_errno;
target_addr = base;
@ -146,7 +146,7 @@ grub_linux_load64 (grub_elf_t elf, void **extra_mem, grub_size_t extra_size)
/* Linux's entry point incorrectly contains a virtual address. */
entry_addr = elf->ehdr.ehdr64.e_entry;
linux_size = grub_elf64_size (elf, &base);
linux_size = grub_elf64_size (elf, &base, 0);
if (linux_size == 0)
return grub_errno;
target_addr = base;

133
grub-core/loader/powerpc/ieee1275/linux.c
View File

@ -26,6 +26,7 @@
#include <grub/ieee1275/ieee1275.h>
#include <grub/command.h>
#include <grub/i18n.h>
#include <grub/memory.h>
#define ELF32_LOADMASK (0xc0000000UL)
#define ELF64_LOADMASK (0xc000000000000000ULL)
@ -45,6 +46,51 @@ static char *linux_args;
typedef void (*kernel_entry_t) (void *, unsigned long, int (void *),
unsigned long, unsigned long);
static grub_addr_t
grub_linux_claimmap_iterate (grub_addr_t target, grub_size_t size,
grub_size_t align)
{
grub_addr_t found_addr = (grub_addr_t) -1;
auto int NESTED_FUNC_ATTR alloc_mem (grub_uint64_t addr, grub_uint64_t len,
grub_memory_type_t type);
int NESTED_FUNC_ATTR alloc_mem (grub_uint64_t addr, grub_uint64_t len,
grub_memory_type_t type)
{
grub_uint64_t end = addr + len;
addr = ALIGN_UP (addr, align);
target = ALIGN_UP (target, align);
/* Target above the memory chunk. */
if (type != GRUB_MEMORY_AVAILABLE || target > end)
return 0;
/* Target inside the memory chunk. */
if (target >= addr && target < end && size <= end - target)
{
if (grub_claimmap (target, size) == GRUB_ERR_NONE)
{
found_addr = target;
return 1;
}
}
/* Target below the memory chunk. */
if (target < addr && addr + size <= end)
{
if (grub_claimmap (addr, size) == GRUB_ERR_NONE)
{
found_addr = addr;
return 1;
}
}
return 0;
}
grub_machine_mmap_iterate (alloc_mem);
return found_addr;
}
static grub_err_t
grub_linux_boot (void)
{
@ -102,34 +148,30 @@ grub_linux_unload (void)
static grub_err_t
grub_linux_load32 (grub_elf_t elf)
{
Elf32_Addr entry;
int found_addr = 0;
Elf32_Addr base_addr;
grub_addr_t seg_addr;
grub_uint32_t align;
int offset;
/* Linux's entry point incorrectly contains a virtual address. */
entry = elf->ehdr.ehdr32.e_entry & ~ELF32_LOADMASK;
if (entry == 0)
entry = 0x01400000;
linux_size = grub_elf32_size (elf, 0);
linux_size = grub_elf32_size (elf, &base_addr, &align);
if (linux_size == 0)
return grub_errno;
/* Pad it; the kernel scribbles over memory beyond its load address. */
linux_size += 0x100000;
offset = elf->ehdr.ehdr32.e_entry - base_addr;
/* Linux's incorrectly contains a virtual address. */
base_addr &= ~ELF32_LOADMASK;
/* On some systems, firmware occupies the memory we're trying to use.
* Happily, Linux can be loaded anywhere (it relocates itself). Iterate
* until we find an open area. */
for (linux_addr = entry; linux_addr < entry + 200 * 0x100000; linux_addr += 0x100000)
{
grub_dprintf ("loader", "Attempting to claim at 0x%x, size 0x%x.\n",
linux_addr, linux_size);
found_addr = grub_claimmap (linux_addr, linux_size);
if (found_addr != -1)
break;
}
if (found_addr == -1)
seg_addr = grub_linux_claimmap_iterate (base_addr & ~ELF32_LOADMASK, linux_size, align);
if (seg_addr == (grub_addr_t) -1)
return grub_error (GRUB_ERR_OUT_OF_MEMORY, "couldn't claim memory");
linux_addr = seg_addr + offset;
/* Now load the segments into the area we claimed. */
auto grub_err_t offset_phdr (Elf32_Phdr *phdr, grub_addr_t *addr, int *do_load);
grub_err_t offset_phdr (Elf32_Phdr *phdr, grub_addr_t *addr, int *do_load)
@ -141,9 +183,7 @@ grub_linux_load32 (grub_elf_t elf)
}
*do_load = 1;
/* Linux's program headers incorrectly contain virtual addresses.
* Translate those to physical, and offset to the area we claimed. */
*addr = (phdr->p_paddr & ~ELF32_LOADMASK) + linux_addr;
*addr = (phdr->p_paddr - base_addr) + seg_addr;
return 0;
}
return grub_elf32_load (elf, offset_phdr, 0, 0);
@ -152,34 +192,30 @@ grub_linux_load32 (grub_elf_t elf)
static grub_err_t
grub_linux_load64 (grub_elf_t elf)
{
Elf64_Addr entry;
int found_addr = 0;
Elf64_Addr base_addr;
grub_addr_t seg_addr;
grub_uint64_t align;
int offset;
/* Linux's entry point incorrectly contains a virtual address. */
entry = elf->ehdr.ehdr64.e_entry & ~ELF64_LOADMASK;
if (entry == 0)
entry = 0x01400000;
linux_size = grub_elf64_size (elf, 0);
linux_size = grub_elf64_size (elf, &base_addr, &align);
if (linux_size == 0)
return grub_errno;
/* Pad it; the kernel scribbles over memory beyond its load address. */
linux_size += 0x100000;
offset = elf->ehdr.ehdr64.e_entry - base_addr;
/* Linux's incorrectly contains a virtual address. */
base_addr &= ~ELF64_LOADMASK;
/* On some systems, firmware occupies the memory we're trying to use.
* Happily, Linux can be loaded anywhere (it relocates itself). Iterate
* until we find an open area. */
for (linux_addr = entry; linux_addr < entry + 200 * 0x100000; linux_addr += 0x100000)
{
grub_dprintf ("loader", "Attempting to claim at 0x%x, size 0x%x.\n",
linux_addr, linux_size);
found_addr = grub_claimmap (linux_addr, linux_size);
if (found_addr != -1)
break;
}
if (found_addr == -1)
seg_addr = grub_linux_claimmap_iterate (base_addr & ~ELF64_LOADMASK, linux_size, align);
if (seg_addr == (grub_addr_t) -1)
return grub_error (GRUB_ERR_OUT_OF_MEMORY, "couldn't claim memory");
linux_addr = seg_addr + offset;
/* Now load the segments into the area we claimed. */
auto grub_err_t offset_phdr (Elf64_Phdr *phdr, grub_addr_t *addr, int *do_load);
grub_err_t offset_phdr (Elf64_Phdr *phdr, grub_addr_t *addr, int *do_load)
@ -190,9 +226,8 @@ grub_linux_load64 (grub_elf_t elf)
return 0;
}
*do_load = 1;
/* Linux's program headers incorrectly contain virtual addresses.
* Translate those to physical, and offset to the area we claimed. */
*addr = (phdr->p_paddr & ~ELF64_LOADMASK) + linux_addr;
*addr = (phdr->p_paddr - base_addr) + seg_addr;
return 0;
}
return grub_elf64_load (elf, offset_phdr, 0, 0);
@ -287,7 +322,6 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
grub_ssize_t size;
grub_addr_t first_addr;
grub_addr_t addr;
int found_addr = 0;
if (argc == 0)
{
@ -311,20 +345,9 @@ grub_cmd_initrd (grub_command_t cmd __attribute__ ((unused)),
/* Attempt to claim at a series of addresses until successful in
the same way that grub_rescue_cmd_linux does. */
for (addr = first_addr; addr < first_addr + 200 * 0x100000; addr += 0x100000)
{
grub_dprintf ("loader", "Attempting to claim at 0x%x, size 0x%x.\n",
addr, size);
found_addr = grub_claimmap (addr, size);
if (found_addr != -1)
break;
}
if (found_addr == -1)
{
grub_error (GRUB_ERR_OUT_OF_MEMORY, "cannot claim memory");
goto fail;
}
addr = grub_linux_claimmap_iterate (first_addr, size, 0x100000);
if (addr == (grub_addr_t) -1)
goto fail;
grub_dprintf ("loader", "Loading initrd at 0x%x, size 0x%x\n", addr, size);

2
grub-core/loader/sparc64/ieee1275/linux.c
View File

@ -247,7 +247,7 @@ grub_linux_load64 (grub_elf_t elf)
linux_entry = elf->ehdr.ehdr64.e_entry;
linux_addr = 0x40004000;
off = 0x4000;
linux_size = grub_elf64_size (elf, 0);
linux_size = grub_elf64_size (elf, 0, 0);
if (linux_size == 0)
return grub_errno;

4
include/grub/elfload.h
View File

@ -46,12 +46,12 @@ grub_elf_t grub_elf_file (grub_file_t);
grub_err_t grub_elf_close (grub_elf_t);
int grub_elf_is_elf32 (grub_elf_t);
grub_size_t grub_elf32_size (grub_elf_t, Elf32_Addr *);
grub_size_t grub_elf32_size (grub_elf_t, Elf32_Addr *, grub_uint32_t *);
grub_err_t grub_elf32_load (grub_elf_t, grub_elf32_load_hook_t, grub_addr_t *,
grub_size_t *);
int grub_elf_is_elf64 (grub_elf_t);
grub_size_t grub_elf64_size (grub_elf_t, Elf64_Addr *);
grub_size_t grub_elf64_size (grub_elf_t, Elf64_Addr *, grub_uint64_t *);
grub_err_t grub_elf64_load (grub_elf_t, grub_elf64_load_hook_t, grub_addr_t *,
grub_size_t *);
grub_err_t