rockchip: Add the rkimage format to mkimage

Rockchip SoCs require certain formats for code that they execute, The
simplest format is a 4-byte header at the start of a binary file. Add
support for this so that we can create images that the boot ROM understands.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 65 insertions, 0 deletions

diff --git a/tools/rkimage.c b/tools/rkimage.c
new file mode 100644
index 0000000..7b292f4
--- /dev/null
+++ b/tools/rkimage.c
@@ -0,0 +1,65 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * See README.rockchip for details of the rkimage format
+ */
+
+#include "imagetool.h"
+#include <image.h>
+
+static uint32_t header;
+
+static int rkimage_check_params(struct image_tool_params *params)
+{
+	return 0;
+}
+
+static int rkimage_verify_header(unsigned char *buf, int size,
+				 struct image_tool_params *params)
+{
+	return 0;
+}
+
+static void rkimage_print_header(const void *buf)
+{
+}
+
+static void rkimage_set_header(void *buf, struct stat *sbuf, int ifd,
+			       struct image_tool_params *params)
+{
+	memcpy(buf, "RK32", 4);
+}
+
+static int rkimage_extract_subimage(void *buf, struct image_tool_params *params)
+{
+	return 0;
+}
+
+static int rkimage_check_image_type(uint8_t type)
+{
+	if (type == IH_TYPE_RKIMAGE)
+		return EXIT_SUCCESS;
+	else
+		return EXIT_FAILURE;
+}
+
+/*
+ * rk_image parameters
+ */
+U_BOOT_IMAGE_TYPE(
+	rkimage,
+	"Rockchip Boot Image support",
+	4,
+	&header,
+	rkimage_check_params,
+	rkimage_verify_header,
+	rkimage_print_header,
+	rkimage_set_header,
+	rkimage_extract_subimage,
+	rkimage_check_image_type,
+	NULL,
+	NULL
+);