1 files changed, 54 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr.c b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr.c
new file mode 100644
index 000000000000..75dc06557877
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2016, 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 "acr.h"
+
+#include <core/firmware.h>
+
+/**
+ * Convenience function to duplicate a firmware file in memory and check that
+ * it has the required minimum size.
+ */
+void *
+nvkm_acr_load_firmware(const struct nvkm_subdev *subdev, const char *name,
+                       size_t min_size)
+{
+        const struct firmware *fw;
+        void *blob;
+        int ret;
+
+        ret = nvkm_firmware_get(subdev->device, name, &fw);
+        if (ret)
+                return ERR_PTR(ret);
+        if (fw->size < min_size) {
+                nvkm_error(subdev, "%s is smaller than expected size %zu\n",
+                           name, min_size);
+                nvkm_firmware_put(fw);
+                return ERR_PTR(-EINVAL);
+        }
+        blob = kmemdup(fw->data, fw->size, GFP_KERNEL);
+        nvkm_firmware_put(fw);
+        if (!blob)
+                return ERR_PTR(-ENOMEM);
+
+        return blob;
+}