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-rw-r--r--tools/rkspi.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/tools/rkspi.c b/tools/rkspi.c
new file mode 100644
index 0000000000..a3c4c73916
--- /dev/null
+++ b/tools/rkspi.c
@@ -0,0 +1,119 @@
+/*
+ * (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 rkspi format
+ */
+
+#include "imagetool.h"
+#include <image.h>
+#include <rc4.h>
+#include "mkimage.h"
+#include "rkcommon.h"
+
+enum {
+ RKSPI_SPL_HDR_START = RK_CODE1_OFFSET * RK_BLK_SIZE,
+ RKSPI_SPL_START = RKSPI_SPL_HDR_START + 4,
+ RKSPI_HEADER_LEN = RKSPI_SPL_START,
+ RKSPI_SECT_LEN = RK_BLK_SIZE * 4,
+};
+
+static char dummy_hdr[RKSPI_HEADER_LEN];
+
+static int rkspi_check_params(struct image_tool_params *params)
+{
+ return 0;
+}
+
+static int rkspi_verify_header(unsigned char *buf, int size,
+ struct image_tool_params *params)
+{
+ return 0;
+}
+
+static void rkspi_print_header(const void *buf)
+{
+}
+
+static void rkspi_set_header(void *buf, struct stat *sbuf, int ifd,
+ struct image_tool_params *params)
+{
+ int sector;
+ unsigned int size;
+ int ret;
+
+ size = params->orig_file_size;
+ ret = rkcommon_set_header(buf, size);
+ debug("size %x\n", size);
+ if (ret) {
+ /* TODO(sjg@chromium.org): This method should return an error */
+ printf("Warning: SPL image is too large (size %#x) and will not boot\n",
+ size);
+ }
+
+ memcpy(buf + RKSPI_SPL_HDR_START, "RK32", 4);
+
+ /*
+ * Spread the image out so we only use the first 2KB of each 4KB
+ * region. This is a feature of the SPI format required by the Rockchip
+ * boot ROM. Its rationale is unknown.
+ */
+ for (sector = size / RKSPI_SECT_LEN - 1; sector >= 0; sector--) {
+ printf("sector %u\n", sector);
+ memmove(buf + sector * RKSPI_SECT_LEN * 2,
+ buf + sector * RKSPI_SECT_LEN,
+ RKSPI_SECT_LEN);
+ memset(buf + sector * RKSPI_SECT_LEN * 2 + RKSPI_SECT_LEN,
+ '\0', RKSPI_SECT_LEN);
+ }
+}
+
+static int rkspi_extract_subimage(void *buf, struct image_tool_params *params)
+{
+ return 0;
+}
+
+static int rkspi_check_image_type(uint8_t type)
+{
+ if (type == IH_TYPE_RKSPI)
+ return EXIT_SUCCESS;
+ else
+ return EXIT_FAILURE;
+}
+
+/* We pad the file out to a fixed size - this method returns that size */
+static int rkspi_vrec_header(struct image_tool_params *params,
+ struct image_type_params *tparams)
+{
+ int pad_size;
+
+ pad_size = (RK_MAX_CODE1_SIZE + 0x7ff) / 0x800 * 0x800;
+ params->orig_file_size = pad_size;
+
+ /* We will double the image size due to the SPI format */
+ pad_size *= 2;
+ pad_size += RKSPI_SPL_HDR_START;
+ debug("pad_size %x\n", pad_size);
+
+ return pad_size - params->file_size;
+}
+
+/*
+ * rk_spi parameters
+ */
+U_BOOT_IMAGE_TYPE(
+ rkspi,
+ "Rockchip SPI Boot Image support",
+ RKSPI_HEADER_LEN,
+ dummy_hdr,
+ rkspi_check_params,
+ rkspi_verify_header,
+ rkspi_print_header,
+ rkspi_set_header,
+ rkspi_extract_subimage,
+ rkspi_check_image_type,
+ NULL,
+ rkspi_vrec_header
+);