* (C) Copyright 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
+ * (C) 2017 Theobroma Systems Design und Consulting GmbH
+ *
* SPDX-License-Identifier: GPL-2.0+
*
* Helper functions for Rockchip images
rkcommon_set_header0(buf, file_size, params);
- /* Set up the SPL name */
+ /* Set up the SPL name (i.e. copy spl_hdr over) */
memcpy(&hdr->magic, rkcommon_get_spl_hdr(params), RK_SPL_HDR_SIZE);
if (rkcommon_need_rc4_spl(params))
return 0;
}
+static inline unsigned rkcommon_offset_to_spi(unsigned offset)
+{
+ /*
+ * While SD/MMC images use a flat addressing, SPI images are padded
+ * to use the first 2K of every 4K sector only.
+ */
+ return ((offset & ~0x7ff) << 1) + (offset & 0x7ff);
+}
+
+static inline unsigned rkcommon_spi_to_offset(unsigned offset)
+{
+ return ((offset & ~0x7ff) >> 1) + (offset & 0x7ff);
+}
+
+static int rkcommon_parse_header(const void *buf, struct header0_info *header0,
+ struct spl_info **spl_info)
+{
+ unsigned hdr1_offset;
+ struct header1_info *hdr1_sdmmc, *hdr1_spi;
+ int i;
+
+ if (spl_info)
+ *spl_info = NULL;
+
+ /*
+ * The first header (hdr0) is always RC4 encoded, so try to decrypt
+ * with the well-known key.
+ */
+ memcpy((void *)header0, buf, sizeof(struct header0_info));
+ rc4_encode((void *)header0, sizeof(struct header0_info), rc4_key);
+
+ if (header0->signature != RK_SIGNATURE)
+ return -EPROTO;
+
+ /* We don't support RC4 encoded image payloads here, yet... */
+ if (header0->disable_rc4 == 0)
+ return -ENOSYS;
+
+ hdr1_offset = header0->init_offset * RK_BLK_SIZE;
+ hdr1_sdmmc = (struct header1_info *)(buf + hdr1_offset);
+ hdr1_spi = (struct header1_info *)(buf +
+ rkcommon_offset_to_spi(hdr1_offset));
+
+ for (i = 0; i < ARRAY_SIZE(spl_infos); i++) {
+ if (!memcmp(&hdr1_sdmmc->magic, spl_infos[i].spl_hdr, 4)) {
+ if (spl_info)
+ *spl_info = &spl_infos[i];
+ return IH_TYPE_RKSD;
+ } else if (!memcmp(&hdr1_spi->magic, spl_infos[i].spl_hdr, 4)) {
+ if (spl_info)
+ *spl_info = &spl_infos[i];
+ return IH_TYPE_RKSPI;
+ }
+ }
+
+ return -1;
+}
+
+int rkcommon_verify_header(unsigned char *buf, int size,
+ struct image_tool_params *params)
+{
+ struct header0_info header0;
+ struct spl_info *img_spl_info, *spl_info;
+ int ret;
+
+ ret = rkcommon_parse_header(buf, &header0, &img_spl_info);
+
+ /* If this is the (unimplemented) RC4 case, then rewrite the result */
+ if (ret == -ENOSYS)
+ return 0;
+
+ if (ret < 0)
+ return ret;
+
+ /*
+ * If no 'imagename' is specified via the commandline (e.g. if this is
+ * 'dumpimage -l' w/o any further constraints), we accept any spl_info.
+ */
+ if (params->imagename == NULL)
+ return 0;
+
+ /* Match the 'imagename' against the 'spl_hdr' found */
+ spl_info = rkcommon_get_spl_info(params->imagename);
+ if (spl_info && img_spl_info)
+ return strcmp(spl_info->spl_hdr, img_spl_info->spl_hdr);
+
+ return -ENOENT;
+}
+
+void rkcommon_print_header(const void *buf)
+{
+ struct header0_info header0;
+ struct spl_info *spl_info;
+ uint8_t image_type;
+ int ret;
+
+ ret = rkcommon_parse_header(buf, &header0, &spl_info);
+
+ /* If this is the (unimplemented) RC4 case, then fail silently */
+ if (ret == -ENOSYS)
+ return;
+
+ if (ret < 0) {
+ fprintf(stderr, "Error: image verification failed\n");
+ return;
+ }
+
+ image_type = ret;
+
+ printf("Image Type: Rockchip %s (%s) boot image\n",
+ spl_info->spl_hdr,
+ (image_type == IH_TYPE_RKSD) ? "SD/MMC" : "SPI");
+ printf("Data Size: %d bytes\n", header0.init_size * RK_BLK_SIZE);
+}
+
void rkcommon_rc4_encode_spl(void *buf, unsigned int offset, unsigned int size)
{
unsigned int remaining = size;
int rkcommon_set_header(void *buf, uint file_size,
struct image_tool_params *params);
+/**
+ * rkcommon_verify_header() - verify the header for a Rockchip boot image
+ *
+ * @buf: Pointer to the image file
+ * @file_size: Size of entire bootable image file (incl. all padding)
+ * @return 0 if OK
+ */
+int rkcommon_verify_header(unsigned char *buf, int size,
+ struct image_tool_params *params);
+
+/**
+ * rkcommon_print_header() - print the header for a Rockchip boot image
+ *
+ * This prints the header, spl_name and whether this is a SD/MMC or SPI image.
+ *
+ * @buf: Pointer to the image (can be a read-only file-mapping)
+ */
+void rkcommon_print_header(const void *buf);
+
/**
* rkcommon_need_rc4_spl() - check if rc4 encoded spl is required
*
#include "mkimage.h"
#include "rkcommon.h"
-static int rksd_verify_header(unsigned char *buf, int size,
- struct image_tool_params *params)
-{
- return 0;
-}
-
-static void rksd_print_header(const void *buf)
-{
-}
-
static void rksd_set_header(void *buf, struct stat *sbuf, int ifd,
- struct image_tool_params *params)
+ struct image_tool_params *params)
{
unsigned int size;
int ret;
- printf("params->file_size %d\n", params->file_size);
- printf("params->orig_file_size %d\n", params->orig_file_size);
-
/*
* We need to calculate this using 'RK_SPL_HDR_START' and not using
* 'tparams->header_size', as the additional byte inserted when
- * 'is_boot0' is true counts towards the payload.
+ * 'is_boot0' is true counts towards the payload (and not towards the
+ * header).
*/
size = params->file_size - RK_SPL_HDR_START;
ret = rkcommon_set_header(buf, size, params);
}
}
-static int rksd_extract_subimage(void *buf, struct image_tool_params *params)
-{
- return 0;
-}
-
static int rksd_check_image_type(uint8_t type)
{
if (type == IH_TYPE_RKSD)
0,
NULL,
rkcommon_check_params,
- rksd_verify_header,
- rksd_print_header,
+ rkcommon_verify_header,
+ rkcommon_print_header,
rksd_set_header,
- rksd_extract_subimage,
+ NULL,
rksd_check_image_type,
NULL,
rksd_vrec_header
RKSPI_SECT_LEN = RK_BLK_SIZE * 4,
};
-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)
{
}
}
-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)
0,
NULL,
rkcommon_check_params,
- rkspi_verify_header,
- rkspi_print_header,
+ rkcommon_verify_header,
+ rkcommon_print_header,
rkspi_set_header,
- rkspi_extract_subimage,
+ NULL,
rkspi_check_image_type,
NULL,
rkspi_vrec_header
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