108 lines
2.1 KiB
C
108 lines
2.1 KiB
C
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#include <common.h>
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#include <command.h>
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#ifndef CONFIG_CRC32_VERIFY
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int do_mem_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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ulong addr, length;
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ulong crc;
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ulong *ptr;
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if (argc < 3) {
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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addr = simple_strtoul (argv[1], NULL, 16);
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length = simple_strtoul (argv[2], NULL, 16);
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crc = crc32 (0, (const uchar *) addr, length);
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printf ("CRC32 for %08lx ... %08lx ==> %08lx\n",
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addr, addr + length - 1, crc);
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if (argc > 3) {
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ptr = (ulong *) simple_strtoul (argv[3], NULL, 16);
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*ptr = crc;
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}
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return 0;
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}
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#else /* CONFIG_CRC32_VERIFY */
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int do_mem_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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ulong addr, length;
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ulong crc;
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ulong *ptr;
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ulong vcrc;
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int verify;
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int ac;
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char **av;
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if (argc < 3) {
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usage:
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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av = argv + 1;
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ac = argc - 1;
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if (strcmp(*av, "-v") == 0) {
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verify = 1;
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av++;
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ac--;
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if (ac < 3)
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goto usage;
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} else
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verify = 0;
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addr = simple_strtoul(*av++, NULL, 16);
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length = simple_strtoul(*av++, NULL, 16);
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crc = crc32(0, (const uchar *) addr, length);
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if (!verify) {
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printf ("CRC32 for %08lx ... %08lx ==> %08lx\n",
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addr, addr + length - 1, crc);
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if (ac > 2) {
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ptr = (ulong *) simple_strtoul (*av++, NULL, 16);
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*ptr = crc;
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}
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} else {
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vcrc = simple_strtoul(*av++, NULL, 16);
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if (vcrc != crc) {
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printf ("CRC32 for %08lx ... %08lx ==> %08lx != %08lx ** ERROR **\n",
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addr, addr + length - 1, crc, vcrc);
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return 1;
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}
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}
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return 0;
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}
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#endif /* CONFIG_CRC32_VERIFY */
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#ifndef CONFIG_CRC32_VERIFY
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U_BOOT_CMD_START(crc32)
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.maxargs = 4,
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.cmd = do_mem_crc,
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.usage = "checksum calculation",
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U_BOOT_CMD_HELP("address count [addr]\n - compute CRC32 checksum [save at addr]\n")
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U_BOOT_CMD_END
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#else /* CONFIG_CRC32_VERIFY */
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U_BOOT_CMD(
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crc32, 5, 0, do_mem_crc,
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"crc32 - checksum calculation\n",
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"address count [addr]\n - compute CRC32 checksum [save at addr]\n"
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"-v address count crc\n - verify crc of memory area\n"
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);
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#endif /* CONFIG_CRC32_VERIFY */
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