diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c index 196424be0998..31420ce1ce6b 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c @@ -40,9 +40,8 @@ static void guc_prepare_xfer(struct intel_uncore *uncore) } } -/* Copy RSA signature from the fw image to HW for verification */ -static int guc_xfer_rsa(struct intel_uc_fw *guc_fw, - struct intel_uncore *uncore) +static int guc_xfer_rsa_mmio(struct intel_uc_fw *guc_fw, + struct intel_uncore *uncore) { u32 rsa[UOS_RSA_SCRATCH_COUNT]; size_t copied; @@ -58,6 +57,27 @@ static int guc_xfer_rsa(struct intel_uc_fw *guc_fw, return 0; } +static int guc_xfer_rsa_vma(struct intel_uc_fw *guc_fw, + struct intel_uncore *uncore) +{ + struct intel_guc *guc = container_of(guc_fw, struct intel_guc, fw); + + intel_uncore_write(uncore, UOS_RSA_SCRATCH(0), + intel_guc_ggtt_offset(guc, guc_fw->rsa_data)); + + return 0; +} + +/* Copy RSA signature from the fw image to HW for verification */ +static int guc_xfer_rsa(struct intel_uc_fw *guc_fw, + struct intel_uncore *uncore) +{ + if (guc_fw->rsa_data) + return guc_xfer_rsa_vma(guc_fw, uncore); + else + return guc_xfer_rsa_mmio(guc_fw, uncore); +} + /* * Read the GuC status register (GUC_STATUS) and store it in the * specified location; then return a boolean indicating whether @@ -142,7 +162,10 @@ int intel_guc_fw_upload(struct intel_guc *guc) /* * Note that GuC needs the CSS header plus uKernel code to be copied * by the DMA engine in one operation, whereas the RSA signature is - * loaded via MMIO. + * loaded separately, either by copying it to the UOS_RSA_SCRATCH + * register (if key size <= 256) or through a ggtt-pinned vma (if key + * size > 256). The RSA size and therefore the way we provide it to the + * HW is fixed for each platform and hard-coded in the bootrom. */ ret = guc_xfer_rsa(&guc->fw, uncore); if (ret) @@ -164,6 +187,6 @@ int intel_guc_fw_upload(struct intel_guc *guc) return 0; out: - intel_uc_fw_change_status(&guc->fw, INTEL_UC_FIRMWARE_FAIL); + intel_uc_fw_change_status(&guc->fw, INTEL_UC_FIRMWARE_LOAD_FAIL); return ret; } |