X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=tools%2Frkcommon.c;h=831c2ad8207ac2ca2513cccb69f879769854d518;hb=233719cc40b5a00f37949d4173c190edcb4491a1;hp=8283a740c13d3062b34cc6e2ff20404565c16843;hpb=5c84ad097d829bb1e6460438f33e1536b23b3c9b;p=u-boot diff --git a/tools/rkcommon.c b/tools/rkcommon.c index 8283a740c1..831c2ad820 100644 --- a/tools/rkcommon.c +++ b/tools/rkcommon.c @@ -1,8 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2015 Google, Inc * Written by Simon Glass * - * SPDX-License-Identifier: GPL-2.0+ + * (C) 2017 Theobroma Systems Design und Consulting GmbH * * Helper functions for Rockchip images */ @@ -56,9 +57,6 @@ struct header1_info { * @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 { @@ -66,15 +64,18 @@ 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] = { @@ -152,16 +153,6 @@ bool rkcommon_need_rc4_spl(struct image_tool_params *params) 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) { @@ -182,11 +173,14 @@ 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 +195,7 @@ 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 +205,116 @@ 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 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; @@ -247,20 +351,18 @@ int rkcommon_vrec_header(struct image_tool_params *params, * 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