diff options
Diffstat (limited to 'tools/rkcommon.c')
| -rw-r--r-- | tools/rkcommon.c | 131 |
1 files changed, 126 insertions, 5 deletions
diff --git a/tools/rkcommon.c b/tools/rkcommon.c index 8283a74..fd95abc 100644 --- a/tools/rkcommon.c +++ b/tools/rkcommon.c @@ -2,6 +2,8 @@ * (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 @@ -75,6 +77,7 @@ static struct spl_info spl_infos[] = { { "rk3288", "RK32", 0x8000, false, false }, { "rk3328", "RK32", 0x8000 - 0x1000, false, false }, { "rk3399", "RK33", 0x20000, false, true }, + { "rv1108", "RK11", 0x1800, false, false}, }; static unsigned char rc4_key[16] = { @@ -182,11 +185,14 @@ static void rkcommon_set_header0(void *buf, uint file_size, */ 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); } @@ -201,7 +207,7 @@ int rkcommon_set_header(void *buf, uint file_size, 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)) @@ -211,6 +217,121 @@ int rkcommon_set_header(void *buf, uint file_size, 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; |