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util/cbftool: Fix the bug in parsing Uefipayload with extended header 

The patch is to fix "Not a usable UEFI firmware volume" issue when
creating CBFS/flash image. This issue is caused by adding FvNameGuid
in UefiPayloadEntry.fdf in EDKII. There is an ext header between header
of Fv and header of PayloadEntry in Fv with FvNameGuid. The ext header
causes the UefiPayloadEntry to be found incorrectly when parsing Fv.

Commit in EDKII: 4bac086e8e007c7143e33f87bb96238326d1d6ba
Bugzila: https://bugzilla.tianocore.org/show_bug.cgi?id=3585

Signed-off-by: Dun Tan <dun.tan@intel.com>
Change-Id: Id063efb1c8e6c7a96ec2182e87b71c7e8b7b6423
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57296
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: King Sumo <kingsumos@gmail.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Dun Tan 2021-09-01 10:29:41 +08:00 committed by Patrick Georgi
parent 6f3fd6358f
commit 4a35940137
2 changed files with 12 additions and 0 deletions
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7
util/cbfstool/cbfs-mkpayload.c
View File

@ -283,6 +283,7 @@ int parse_fv_to_payload(const struct buffer *input, struct buffer *output,
struct cbfs_payload_segment segs[2] = { {0} };
int doffset, len = 0;
firmware_volume_header_t *fv;
firmware_volume_ext_header_t *fvh_ext;
ffs_file_header_t *fh;
common_section_header_t *cs;
dos_header_t *dh;
@ -305,6 +306,12 @@ int parse_fv_to_payload(const struct buffer *input, struct buffer *output,
}
fh = (ffs_file_header_t *)(input->data + fv->header_length);
if (fv->ext_header_offs != 0) {
fvh_ext = (firmware_volume_ext_header_t *)((uintptr_t)fv + fv->ext_header_offs);
fh = (ffs_file_header_t *)((uintptr_t)fvh_ext + fvh_ext->ext_header_size);
fh = (ffs_file_header_t *)(((uintptr_t)fh + 7) & ~7);
}
while (fh->file_type == FILETYPE_PAD) {
unsigned long offset = (fh->size[2] << 16) | (fh->size[1] << 8) | fh->size[0];
DEBUG("skipping %lu bytes of FV padding\n", offset);

5
util/cbfstool/fv.h
View File

@ -32,3 +32,8 @@ typedef struct {
uint8_t size[3];
uint8_t section_type;
} common_section_header_t;
typedef struct {
uint8_t guid[16];
uint32_t ext_header_size;
} firmware_volume_ext_header_t;