drm/radeon/si: Add support for new ucode format (v3)

This adds SI support for the new ucode format.

v2: add size validation, integrate debug info
v3: update to latest version
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/radeon.h

@@ -2306,6 +2306,7 @@ struct radeon_device {
 	const struct firmware *smc_fw;	/* SMC firmware */
 	const struct firmware *uvd_fw;	/* UVD firmware */
 	const struct firmware *vce_fw;	/* VCE firmware */
+	bool new_fw;
 	struct r600_vram_scratch vram_scratch;
 	int msi_enabled; /* msi enabled */
 	struct r600_ih ih; /* r6/700 interrupt ring */

drivers/gpu/drm/radeon/si_smc.c

@@ -219,6 +219,17 @@ int si_load_smc_ucode(struct radeon_device *rdev, u32 limit)
 	if (!rdev->smc_fw)
 		return -EINVAL;
 
+	if (rdev->new_fw) {
+		const struct smc_firmware_header_v1_0 *hdr =
+			(const struct smc_firmware_header_v1_0 *)rdev->smc_fw->data;
+
+		radeon_ucode_print_smc_hdr(&hdr->header);
+
+		ucode_start_address = le32_to_cpu(hdr->ucode_start_addr);
+		ucode_size = le32_to_cpu(hdr->header.ucode_size_bytes);
+		src = (const u8 *)
+			(rdev->smc_fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
+	} else {
 		switch (rdev->family) {
 		case CHIP_TAHITI:
 			ucode_start_address = TAHITI_SMC_UCODE_START;
@@ -244,11 +255,12 @@ int si_load_smc_ucode(struct radeon_device *rdev, u32 limit)
 			DRM_ERROR("unknown asic in smc ucode loader\n");
 			BUG();
 		}
+		src = (const u8 *)rdev->smc_fw->data;
+	}
 
 	if (ucode_size & 3)
 		return -EINVAL;
 
-	src = (const u8 *)rdev->smc_fw->data;
 	spin_lock_irqsave(&rdev->smc_idx_lock, flags);
 	WREG32(SMC_IND_INDEX_0, ucode_start_address);
 	WREG32_P(SMC_IND_ACCESS_CNTL, AUTO_INCREMENT_IND_0, ~AUTO_INCREMENT_IND_0);