diff options
| author | Lijo Lazar <lijo.lazar@amd.com> | 2023-09-14 14:51:52 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-09-20 16:24:06 -0400 |
| commit | 24f60ddc4b55ceb148e6eb994defb28305ec9b56 (patch) | |
| tree | 3bd3d3f812cf58bda0435fd7d5b5e890650c474c /drivers/gpu/drm/amd/amdgpu/atom.c | |
| parent | 2af351d692dd06ed08b1c0cf3348fc31401e8187 (diff) | |
drm/amdgpu: Fix vbios version string search
Search for vbios version string in STRING_OFFSET-ATOM_ROM_HEADER region
first. If those offsets are not populated, use the hardcoded region.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/atom.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/atom.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/atom.c b/drivers/gpu/drm/amd/amdgpu/atom.c index 9f63ddb89b75..2c221000782c 100644 --- a/drivers/gpu/drm/amd/amdgpu/atom.c +++ b/drivers/gpu/drm/amd/amdgpu/atom.c @@ -1444,10 +1444,27 @@ static void atom_get_vbios_pn(struct atom_context *ctx) static void atom_get_vbios_version(struct atom_context *ctx) { + unsigned short start = 3, end; unsigned char *vbios_ver; + unsigned char *p_rom; + + p_rom = ctx->bios; + /* Search from strings offset if it's present */ + start = *(unsigned short *)(p_rom + + OFFSET_TO_GET_ATOMBIOS_STRING_START); + + /* Search till atom rom header start point */ + end = *(unsigned short *)(p_rom + OFFSET_TO_ATOM_ROM_HEADER_POINTER); + + /* Use hardcoded offsets, if the offsets are not populated */ + if (end <= start) { + start = 3; + end = 1024; + } /* find anchor ATOMBIOSBK-AMD */ - vbios_ver = atom_find_str_in_rom(ctx, BIOS_VERSION_PREFIX, 3, 1024, 64); + vbios_ver = + atom_find_str_in_rom(ctx, BIOS_VERSION_PREFIX, start, end, 64); if (vbios_ver != NULL) { /* skip ATOMBIOSBK-AMD VER */ vbios_ver += 18; |