diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c index 821f7cc2051f..365e735f6647 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c @@ -86,6 +86,18 @@ static bool check_atom_bios(uint8_t *bios, size_t size) return false; } +static bool is_atom_fw(uint8_t *bios) +{ + uint16_t bios_header_start = bios[0x48] | (bios[0x49] << 8); + uint8_t frev = bios[bios_header_start + 2]; + uint8_t crev = bios[bios_header_start + 3]; + + if ((frev < 3) || + ((frev == 3) && (crev < 3))) + return false; + + return true; +} /* If you boot an IGP board with a discrete card as the primary, * the IGP rom is not accessible via the rom bar as the IGP rom is @@ -419,26 +431,30 @@ static inline bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) bool amdgpu_get_bios(struct amdgpu_device *adev) { if (amdgpu_atrm_get_bios(adev)) - return true; + goto success; if (amdgpu_acpi_vfct_bios(adev)) - return true; + goto success; if (igp_read_bios_from_vram(adev)) - return true; + goto success; if (amdgpu_read_bios(adev)) - return true; + goto success; if (amdgpu_read_bios_from_rom(adev)) - return true; + goto success; if (amdgpu_read_disabled_bios(adev)) - return true; + goto success; if (amdgpu_read_platform_bios(adev)) - return true; + goto success; DRM_ERROR("Unable to locate a BIOS ROM\n"); return false; + +success: + adev->is_atom_fw = is_atom_fw(adev->bios); + return true; } |