diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h index e41ffc7a7fbc..b05e0e35b734 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h @@ -39,6 +39,11 @@ * 3. Length info of each component can be found in header, in dwords. * 4. Modulus and exponent key are not required by driver. They may not appear * in fw. So driver will load a truncated firmware in this case. + * + * Starting from DG2, the HuC is loaded by the GSC instead of i915. The GSC + * firmware performs all the required integrity checks, we just need to check + * the version. Note that the header for GSC-managed blobs is different from the + * CSS used for dma-loaded firmwares. */ struct uc_css_header { @@ -78,4 +83,8 @@ struct uc_css_header { } __packed; static_assert(sizeof(struct uc_css_header) == 128); +#define HUC_GSC_VERSION_DW 44 +#define HUC_GSC_MAJOR_VER_MASK (0xFF << 0) +#define HUC_GSC_MINOR_VER_MASK (0xFF << 16) + #endif /* _INTEL_UC_FW_ABI_H */ |