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* grub-core/kern/i386/coreboot/mmap.c: Filter out 0xa0000-0x100000

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region.
This commit is contained in:
Vladimir Serbinenko 2014-02-28 09:47:57 +01:00
parent d0949e3747
commit f94b2b4eeb
2 changed files with 37 additions and 6 deletions
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38
grub-core/kern/i386/coreboot/mmap.c
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@ -44,18 +44,44 @@ iterate_linuxbios_table (grub_linuxbios_table_item_t table_item, void *data)
mem_region =
(mem_region_t) ((long) table_item +
sizeof (struct grub_linuxbios_table_item));
while ((long) mem_region < (long) table_item + (long) table_item->size)
for (; (long) mem_region < (long) table_item + (long) table_item->size;
mem_region++)
{
if (ctx->hook (mem_region->addr, mem_region->size,
grub_uint64_t start = mem_region->addr;
grub_uint64_t end = mem_region->addr + mem_region->size;
/* Mark region 0xa0000 - 0x100000 as reserved. */
if (start < 0x100000 && end >= 0xa0000
&& mem_region->type == GRUB_MACHINE_MEMORY_AVAILABLE)
{
if (start < 0xa0000
&& ctx->hook (start, 0xa0000 - start,
/* Multiboot mmaps match with the coreboot mmap
definition. Therefore, we can just pass type
through. */
mem_region->type,
ctx->hook_data))
return 1;
if (start < 0xa0000)
start = 0xa0000;
if (start >= end)
continue;
if (ctx->hook (start, (end > 0x100000 ? 0x100000 : end) - start,
GRUB_MEMORY_RESERVED,
ctx->hook_data))
return 1;
start = 0x100000;
if (end <= start)
continue;
}
if (ctx->hook (start, end - start,
/* Multiboot mmaps match with the coreboot mmap
definition. Therefore, we can just pass type
through. */
(((mem_region->type <= GRUB_MACHINE_MEMORY_BADRAM) && (mem_region->type >= GRUB_MACHINE_MEMORY_AVAILABLE))
|| mem_region->type == GRUB_MEMORY_COREBOOT_TABLES) ? mem_region->type : GRUB_MEMORY_RESERVED,
mem_region->type,
ctx->hook_data))
return 1;
mem_region++;
}
return 0;