From 5fd00ce71a1bfd5cd36f9d42ab657a8e7d6c54f2 Mon Sep 17 00:00:00 2001 From: Iru Cai Date: Sun, 26 Mar 2017 12:05:32 +0800 Subject: util: Add tools for dumping and inserting KBC1126 firmware images. Change-Id: Ic521b177b9602ff042312cccaaa89371db7c5855 Signed-off-by: Iru Cai Reviewed-on: https://review.coreboot.org/19071 Tested-by: build bot (Jenkins) Reviewed-by: Arthur Heymans --- util/kbc1126/kbc1126_ec_dump.c | 124 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 util/kbc1126/kbc1126_ec_dump.c (limited to 'util/kbc1126/kbc1126_ec_dump.c') diff --git a/util/kbc1126/kbc1126_ec_dump.c b/util/kbc1126/kbc1126_ec_dump.c new file mode 100644 index 0000000000..7470012799 --- /dev/null +++ b/util/kbc1126/kbc1126_ec_dump.c @@ -0,0 +1,124 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Iru Cai + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include + +static void usage(const char *s) +{ + printf("%s \n", s); + exit(1); +} + +static void FseekEnd(FILE *fp, long o) +{ + if (fseek(fp, o, SEEK_END) != 0) { + puts("fseek() error!\n"); + exit(1); + } +} + +void dump_fw(FILE *dst, FILE *src, long offset) +{ + static unsigned char buf[65536]; + + if (offset > 0) + offset -= 0x1000000; + + printf("Dumping firmware at -0x%lx...", -offset); + + FseekEnd(src, offset); + unsigned short len; + unsigned short cksum; + unsigned short _cksum = 0; + fread(&len, 2, 1, src); + fread(&cksum, 2, 1, src); + fread(buf, len, 1, src); + + for (size_t i = 0; i < len; i++) { + _cksum += buf[i]; + } + if (_cksum == cksum) { + puts("checksum ok"); + } else { + puts("checksum fail"); + exit(1); + } + + fwrite(&len, 2, 1, dst); + fwrite(&cksum, 2, 1, dst); + fwrite(buf, len, 1, dst); +} + +int main(int argc, char *argv[]) +{ + if (argc != 2) + usage(argv[0]); + + FILE *fp = fopen(argv[1], "rb+"); + + if (fp == NULL) { + puts("Error opening file!"); + exit(1); + } + + char *basename = strrchr(argv[1], '/'); + if (basename == NULL) + basename = argv[1]; + else + basename = basename + 1; + + int len = strlen(basename); + char fn1[len + 5], fn2[len + 5]; + strcpy(fn1, basename); + strcpy(fn2, basename); + strcat(fn1, ".fw1"); + strcat(fn2, ".fw2"); + + FILE *fw1 = fopen(fn1, "wb+"); + FILE *fw2 = fopen(fn2, "wb+"); + + long romsz; + FseekEnd(fp, -1); + romsz = ftell(fp) + 1; + printf("size of %s: 0x%lx\n", argv[1], romsz); + + if (romsz & 0xff) { + puts("The ROM size must be multiple of 0x100"); + exit(1); + } + + /* read offset of fw1 and fw2 */ + char offs[8]; + FseekEnd(fp, -0x100); + fread(offs, 8, 1, fp); + + assert(offs[0] + offs[2] == '\xff'); + assert(offs[1] + offs[3] == '\xff'); + assert(offs[4] + offs[6] == '\xff'); + assert(offs[5] + offs[7] == '\xff'); + long offw1 = (offs[0] << 16) | (offs[1] << 8); + long offw2 = (offs[4] << 16) | (offs[5] << 8); + + dump_fw(fw1, fp, offw1); + dump_fw(fw2, fp, offw2); + + fclose(fp); + fclose(fw1); + fclose(fw2); + return 0; +} -- cgit v1.2.3