drm/amdgpu: add helper function to init sos ucode

driver already had psp_firmware_header struture to
deal with different layout of sos ucode. the sos
micorcode initialization could be common one.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c

@@ -1876,6 +1876,76 @@ out:
 	return err;
 }
 
+int psp_init_sos_microcode(struct psp_context *psp,
+			   const char *chip_name)
+{
+	struct amdgpu_device *adev = psp->adev;
+	char fw_name[30];
+	const struct psp_firmware_header_v1_0 *sos_hdr;
+	const struct psp_firmware_header_v1_1 *sos_hdr_v1_1;
+	const struct psp_firmware_header_v1_2 *sos_hdr_v1_2;
+	int err = 0;
+
+	if (!chip_name) {
+		dev_err(adev->dev, "invalid chip name for sos microcode\n");
+		return -EINVAL;
+	}
+
+	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_sos.bin", chip_name);
+	err = request_firmware(&adev->psp.sos_fw, fw_name, adev->dev);
+	if (err)
+		goto out;
+
+	err = amdgpu_ucode_validate(adev->psp.sos_fw);
+	if (err)
+		goto out;
+
+	sos_hdr = (const struct psp_firmware_header_v1_0 *)adev->psp.sos_fw->data;
+	amdgpu_ucode_print_psp_hdr(&sos_hdr->header);
+
+	switch (sos_hdr->header.header_version_major) {
+	case 1:
+		adev->psp.sos_fw_version = le32_to_cpu(sos_hdr->header.ucode_version);
+		adev->psp.sos_feature_version = le32_to_cpu(sos_hdr->ucode_feature_version);
+		adev->psp.sos_bin_size = le32_to_cpu(sos_hdr->sos_size_bytes);
+		adev->psp.sys_bin_size = le32_to_cpu(sos_hdr->sos_offset_bytes);
+		adev->psp.sys_start_addr = (uint8_t *)sos_hdr +
+				le32_to_cpu(sos_hdr->header.ucode_array_offset_bytes);
+		adev->psp.sos_start_addr = (uint8_t *)adev->psp.sys_start_addr +
+				le32_to_cpu(sos_hdr->sos_offset_bytes);
+		if (sos_hdr->header.header_version_minor == 1) {
+			sos_hdr_v1_1 = (const struct psp_firmware_header_v1_1 *)adev->psp.sos_fw->data;
+			adev->psp.toc_bin_size = le32_to_cpu(sos_hdr_v1_1->toc_size_bytes);
+			adev->psp.toc_start_addr = (uint8_t *)adev->psp.sys_start_addr +
+					le32_to_cpu(sos_hdr_v1_1->toc_offset_bytes);
+			adev->psp.kdb_bin_size = le32_to_cpu(sos_hdr_v1_1->kdb_size_bytes);
+			adev->psp.kdb_start_addr = (uint8_t *)adev->psp.sys_start_addr +
+					le32_to_cpu(sos_hdr_v1_1->kdb_offset_bytes);
+		}
+		if (sos_hdr->header.header_version_minor == 2) {
+			sos_hdr_v1_2 = (const struct psp_firmware_header_v1_2 *)adev->psp.sos_fw->data;
+			adev->psp.kdb_bin_size = le32_to_cpu(sos_hdr_v1_2->kdb_size_bytes);
+			adev->psp.kdb_start_addr = (uint8_t *)adev->psp.sys_start_addr +
+						    le32_to_cpu(sos_hdr_v1_2->kdb_offset_bytes);
+		}
+		break;
+	default:
+		dev_err(adev->dev,
+			"unsupported psp sos firmware\n");
+		err = -EINVAL;
+		goto out;
+	}
+
+	return 0;
+out:
+	dev_err(adev->dev,
+		"failed to init sos firmware\n");
+	release_firmware(adev->psp.sos_fw);
+	adev->psp.sos_fw = NULL;
+
+	return err;
+}
+
 static int psp_set_clockgating_state(void *handle,
 				     enum amd_clockgating_state state)
 {

drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h

@@ -387,4 +387,6 @@ int psp_ring_cmd_submit(struct psp_context *psp,
 			int index);
 int psp_init_asd_microcode(struct psp_context *psp,
 			   const char *chip_name);
+int psp_init_sos_microcode(struct psp_context *psp,
+			   const char *chip_name);
 #endif