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25 #include <linux/types.h>
27 #include "intel_huc.h"
30 void intel_huc_init_early(struct intel_huc *huc)
32 intel_huc_fw_init_early(huc);
36 * intel_huc_auth() - Authenticate HuC uCode
37 * @huc: intel_huc structure
39 * Called after HuC and GuC firmware loading during intel_uc_init_hw().
41 * This function pins HuC firmware image object into GGTT.
42 * Then it invokes GuC action to authenticate passing the offset to RSA
43 * signature through intel_guc_auth_huc(). It then waits for 50ms for
44 * firmware verification ACK and unpins the object.
46 int intel_huc_auth(struct intel_huc *huc)
48 struct drm_i915_private *i915 = huc_to_i915(huc);
49 struct intel_guc *guc = &i915->guc;
54 if (huc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS)
57 vma = i915_gem_object_ggtt_pin(huc->fw.obj, NULL, 0, 0,
58 PIN_OFFSET_BIAS | GUC_WOPCM_TOP);
61 DRM_ERROR("HuC: Failed to pin huc fw object %d\n", ret);
65 ret = intel_guc_auth_huc(guc,
66 guc_ggtt_offset(vma) + huc->fw.rsa_offset);
68 DRM_ERROR("HuC: GuC did not ack Auth request %d\n", ret);
72 /* Check authentication status, it should be done by now */
73 ret = __intel_wait_for_register(i915,
79 DRM_ERROR("HuC: Firmware not verified %#x\n", status);
89 huc->fw.load_status = INTEL_UC_FIRMWARE_FAIL;
91 DRM_ERROR("HuC: Authentication failed %d\n", ret);