mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
c5819701a3
At present this function does not accept a size for the FIT. This means that it must be read from the FIT itself, introducing potential security risk. Update the function to include a size parameter, which can be invalid, in which case fit_check_format() calculates it. For now no callers pass the size, but this can be updated later. Also adjust the return value to an error code so that all the different types of problems can be distinguished by the user. Signed-off-by: Simon Glass <sjg@chromium.org> Reported-by: Bruce Monroe <bruce.monroe@intel.com> Reported-by: Arie Haenel <arie.haenel@intel.com> Reported-by: Julien Lenoir <julien.lenoir@intel.com>
133 lines
3.1 KiB
C
133 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2000-2011
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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#include <common.h>
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#include <bootstage.h>
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#include <command.h>
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#include <cpu_func.h>
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#include <image.h>
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#include <log.h>
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#include <part.h>
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int common_diskboot(struct cmd_tbl *cmdtp, const char *intf, int argc,
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char *const argv[])
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{
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__maybe_unused int dev;
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int part;
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ulong addr = CONFIG_SYS_LOAD_ADDR;
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ulong cnt;
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struct disk_partition info;
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#if defined(CONFIG_LEGACY_IMAGE_FORMAT)
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image_header_t *hdr;
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#endif
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struct blk_desc *dev_desc;
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#if CONFIG_IS_ENABLED(FIT)
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const void *fit_hdr = NULL;
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#endif
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bootstage_mark(BOOTSTAGE_ID_IDE_START);
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if (argc > 3) {
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bootstage_error(BOOTSTAGE_ID_IDE_ADDR);
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return CMD_RET_USAGE;
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}
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bootstage_mark(BOOTSTAGE_ID_IDE_ADDR);
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if (argc > 1)
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addr = simple_strtoul(argv[1], NULL, 16);
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bootstage_mark(BOOTSTAGE_ID_IDE_BOOT_DEVICE);
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part = blk_get_device_part_str(intf, (argc == 3) ? argv[2] : NULL,
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&dev_desc, &info, 1);
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if (part < 0) {
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bootstage_error(BOOTSTAGE_ID_IDE_TYPE);
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return 1;
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}
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dev = dev_desc->devnum;
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bootstage_mark(BOOTSTAGE_ID_IDE_TYPE);
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printf("\nLoading from %s device %d, partition %d: "
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"Name: %.32s Type: %.32s\n", intf, dev, part, info.name,
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info.type);
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debug("First Block: " LBAFU ", # of blocks: " LBAFU
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", Block Size: %ld\n",
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info.start, info.size, info.blksz);
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if (blk_dread(dev_desc, info.start, 1, (ulong *)addr) != 1) {
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printf("** Read error on %d:%d\n", dev, part);
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bootstage_error(BOOTSTAGE_ID_IDE_PART_READ);
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return 1;
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}
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bootstage_mark(BOOTSTAGE_ID_IDE_PART_READ);
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switch (genimg_get_format((void *) addr)) {
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#if defined(CONFIG_LEGACY_IMAGE_FORMAT)
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case IMAGE_FORMAT_LEGACY:
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hdr = (image_header_t *) addr;
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bootstage_mark(BOOTSTAGE_ID_IDE_FORMAT);
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if (!image_check_hcrc(hdr)) {
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puts("\n** Bad Header Checksum **\n");
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bootstage_error(BOOTSTAGE_ID_IDE_CHECKSUM);
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return 1;
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}
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bootstage_mark(BOOTSTAGE_ID_IDE_CHECKSUM);
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image_print_contents(hdr);
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cnt = image_get_image_size(hdr);
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break;
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#endif
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#if CONFIG_IS_ENABLED(FIT)
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case IMAGE_FORMAT_FIT:
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fit_hdr = (const void *) addr;
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puts("Fit image detected...\n");
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cnt = fit_get_size(fit_hdr);
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break;
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#endif
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default:
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bootstage_error(BOOTSTAGE_ID_IDE_FORMAT);
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puts("** Unknown image type\n");
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return 1;
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}
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cnt += info.blksz - 1;
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cnt /= info.blksz;
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cnt -= 1;
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if (blk_dread(dev_desc, info.start + 1, cnt,
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(ulong *)(addr + info.blksz)) != cnt) {
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printf("** Read error on %d:%d\n", dev, part);
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bootstage_error(BOOTSTAGE_ID_IDE_READ);
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return 1;
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}
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bootstage_mark(BOOTSTAGE_ID_IDE_READ);
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#if CONFIG_IS_ENABLED(FIT)
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/* This cannot be done earlier,
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* we need complete FIT image in RAM first */
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if (genimg_get_format((void *) addr) == IMAGE_FORMAT_FIT) {
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if (fit_check_format(fit_hdr, IMAGE_SIZE_INVAL)) {
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bootstage_error(BOOTSTAGE_ID_IDE_FIT_READ);
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puts("** Bad FIT image format\n");
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return 1;
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}
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bootstage_mark(BOOTSTAGE_ID_IDE_FIT_READ_OK);
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}
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#endif
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flush_cache(addr, (cnt+1)*info.blksz);
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/* Loading ok, update default load address */
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image_load_addr = addr;
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return bootm_maybe_autostart(cmdtp, argv[0]);
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}
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