1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/hs_ucode.c b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/hs_ucode.c
new file mode 100644
index 000000000000..6b33182ddc2f
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/hs_ucode.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "hs_ucode.h"
+#include "ls_ucode.h"
+#include "acr.h"
+
+#include <engine/falcon.h>
+
+/**
+ * hs_ucode_patch_signature() - patch HS blob with correct signature for
+ * specified falcon.
+ */
+static void
+hs_ucode_patch_signature(const struct nvkm_falcon *falcon, void *acr_image,
+			 bool new_format)
+{
+	struct fw_bin_header *hsbin_hdr = acr_image;
+	struct hsf_fw_header *fw_hdr = acr_image + hsbin_hdr->header_offset;
+	void *hs_data = acr_image + hsbin_hdr->data_offset;
+	void *sig;
+	u32 sig_size;
+	u32 patch_loc, patch_sig;
+
+	/*
+	 * I had the brilliant idea to "improve" the binary format by
+	 * removing this useless indirection. However to make NVIDIA files
+	 * directly compatible, let's support both format.
+	 */
+	if (new_format) {
+		patch_loc = fw_hdr->patch_loc;
+		patch_sig = fw_hdr->patch_sig;
+	} else {
+		patch_loc = *(u32 *)(acr_image + fw_hdr->patch_loc);
+		patch_sig = *(u32 *)(acr_image + fw_hdr->patch_sig);
+	}
+
+	/* Falcon in debug or production mode? */
+	if (falcon->debug) {
+		sig = acr_image + fw_hdr->sig_dbg_offset;
+		sig_size = fw_hdr->sig_dbg_size;
+	} else {
+		sig = acr_image + fw_hdr->sig_prod_offset;
+		sig_size = fw_hdr->sig_prod_size;
+	}
+
+	/* Patch signature */
+	memcpy(hs_data + patch_loc, sig + patch_sig, sig_size);
+}
+
+void *
+hs_ucode_load_blob(struct nvkm_subdev *subdev, const struct nvkm_falcon *falcon,
+		   const char *fw)
+{
+	void *acr_image;
+	bool new_format;
+
+	acr_image = nvkm_acr_load_firmware(subdev, fw, 0);
+	if (IS_ERR(acr_image))
+		return acr_image;
+
+	/* detect the format to define how signature should be patched */
+	switch (((u32 *)acr_image)[0]) {
+	case 0x3b1d14f0:
+		new_format = true;
+		break;
+	case 0x000010de:
+		new_format = false;
+		break;
+	default:
+		nvkm_error(subdev, "unknown header for HS blob %s\n", fw);
+		return ERR_PTR(-EINVAL);
+	}
+
+	hs_ucode_patch_signature(falcon, acr_image, new_format);
+
+	return acr_image;
+}