* (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
* @spl_hdr: Boot ROM requires a 4-bytes spl header
* @spl_size: Spl size(include extra 4-bytes spl header)
* @spl_rc4: RC4 encode the SPL binary (same key as header)
- * @spl_boot0: A new-style (ARM_SOC_BOOT0_HOOK) image that should
- * have the boot magic (e.g. 'RK33') written to its first
- * word.
*/
struct spl_info {
const char *spl_hdr;
const uint32_t spl_size;
const bool spl_rc4;
- const bool spl_boot0;
};
static struct spl_info spl_infos[] = {
- { "rk3036", "RK30", 0x1000, false, false },
- { "rk3188", "RK31", 0x8000 - 0x800, true, false },
- { "rk3288", "RK32", 0x8000, false, false },
- { "rk3328", "RK32", 0x8000 - 0x1000, false, false },
- { "rk3399", "RK33", 0x20000, false, true },
+ { "rk3036", "RK30", 0x1000, false },
+ { "rk3128", "RK31", 0x1800, false },
+ { "rk3188", "RK31", 0x8000 - 0x800, true },
+ { "rk322x", "RK32", 0x8000 - 0x1000, false },
+ { "rk3288", "RK32", 0x8000, false },
+ { "rk3328", "RK32", 0x8000 - 0x1000, false },
+ { "rk3368", "RK33", 0x8000 - 0x1000, false },
+ { "rk3399", "RK33", 0x30000 - 0x2000, false },
+ { "rv1108", "RK11", 0x1800, false },
};
static unsigned char rc4_key[16] = {
return info->spl_rc4;
}
-bool rkcommon_spl_is_boot0(struct image_tool_params *params)
-{
- struct spl_info *info = rkcommon_get_spl_info(params->imagename);
-
- /*
- * info would not be NULL, because of we checked params before.
- */
- return info->spl_boot0;
-}
-
static void rkcommon_set_header0(void *buf, uint file_size,
struct image_tool_params *params)
{
*/
hdr->init_size = ROUND(hdr->init_size, 4);
/*
- * The images we create do not contain the stage following the SPL as
- * part of the SPL image, so the init_boot_size (which might have been
- * read by Rockchip's miniloder) should be the same as the init_size.
+ * init_boot_size needs to be set, as it is read by the BootROM
+ * to determine the size of the next-stage bootloader (e.g. U-Boot
+ * proper), when used with the back-to-bootrom functionality.
+ *
+ * see https://lists.denx.de/pipermail/u-boot/2017-May/293267.html
+ * for a more detailed explanation by Andy Yan
*/
- hdr->init_boot_size = hdr->init_size;
+ hdr->init_boot_size = hdr->init_size + RK_MAX_BOOT_SIZE / RK_BLK_SIZE;
rc4_encode(buf, RK_BLK_SIZE, rc4_key);
}
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 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;
* have the first 4 bytes reserved for the spl_name). Reserving
* these 4 bytes is done using the BOOT0_HOOK infrastructure.
*
- * Depending on this, the header is either 0x800 (if this is a
- * 'boot0'-style payload, which has reserved 4 bytes at the
- * beginning for the 'spl_name' and expects us to overwrite
- * its first 4 bytes) or 0x804 bytes in length.
+ * The header is always at 0x800 (as we now use a payload
+ * prepadded using the boot0 hook for all targets): the first
+ * 4 bytes of these images can safely be overwritten using the
+ * boot magic.
*/
- if (rkcommon_spl_is_boot0(params))
- tparams->header_size = RK_SPL_HDR_START;
- else
- tparams->header_size = RK_SPL_HDR_START + 4;
+ tparams->header_size = RK_SPL_HDR_START;
/* Allocate, clear and install the header */
tparams->hdr = malloc(tparams->header_size);
+ if (!tparams->hdr)
+ return -ENOMEM;
memset(tparams->hdr, 0, tparams->header_size);
- tparams->header_size = tparams->header_size;
/*
* If someone passed in 0 for the alignment, we'd better handle
projects / people / ms / u-boot.git / blobdiff