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#include "fmap.h"
#include "file_type.h"
#include "futility.h"
#include "traversal.h"
/* These are the expected areas, in order of traversal */
struct bios_fmap_s bios_area[] = {
{BIOS_FMAP_GBB, "GBB", "GBB Area"},
{BIOS_FMAP_FW_MAIN_A, "FW_MAIN_A", "Firmware A Data"},
{BIOS_FMAP_FW_MAIN_B, "FW_MAIN_B", "Firmware B Data"},
{BIOS_FMAP_VBLOCK_A, "VBLOCK_A", "Firmware A Key"},
{BIOS_FMAP_VBLOCK_B, "VBLOCK_B", "Firmware B Key"},
};
BUILD_ASSERT(ARRAY_SIZE(bios_area) == NUM_BIOS_COMPONENTS);
void fmap_limit_area(FmapAreaHeader *ah, uint32_t len)
{
uint32_t sum = ah->area_offset + ah->area_size;
if (sum < ah->area_size || sum > len) {
Debug("%s(%s) 0x%x + 0x%x > 0x%x\n",
__func__, ah->area_name,
ah->area_offset, ah->area_size, len);
ah->area_offset = 0;
ah->area_size = 0;
}
}
enum futil_file_type ft_recognize_bios_image(uint8_t *buf, uint32_t len)
{
FmapHeader *fmap;
int i;
fmap = fmap_find(buf, len);
if (!fmap)
return FILE_TYPE_UNKNOWN;
for (i = 0; i < NUM_BIOS_COMPONENTS; i++)
if (!fmap_find_by_name(buf, len, fmap,
bios_area[i].name, 0))
break;
if (i == NUM_BIOS_COMPONENTS)
return FILE_TYPE_BIOS_IMAGE;
for (i = 0; i < NUM_BIOS_COMPONENTS; i++)
if (!fmap_find_by_name(buf, len, fmap,
bios_area[i].oldname, 0))
break;
if (i == NUM_BIOS_COMPONENTS)
return FILE_TYPE_OLD_BIOS_IMAGE;
return FILE_TYPE_UNKNOWN;
}
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