4225493159
Add support for setting addresses of blobs only, and using address in memory when ROM is mapped Change-Id: I053c55253eee00558071d15923e3eb17b1e8410c Signed-off-by: Iru Cai <mytbk920423@gmail.com> Reviewed-on: https://review.coreboot.org/20474 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
147 lines
3.2 KiB
C
147 lines
3.2 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2017 Iru Cai <mytbk920423@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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static void usage(const char *s)
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{
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printf("insert firmware blobs:\n\t"
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"%s <rom file> <fw1> <fw2> <fw1 offset> <fw2 offset>\n\n",
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s);
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printf("set addresses of firmware blobs only:\n\t"
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"%s <rom file> <fw1 offset> <fw2 offset>\n\n",
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s);
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printf(
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"offset can be (example is put it to 0x7ffa00 when ROM is 8MB):\n"
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"- file offset: 0x7ffa00\n"
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"- distance to the end of file: -0x600\n"
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"- the address when ROM is mapped to the end of memory: "
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"0xfffffa00\n");
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exit(1);
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}
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static void FseekEnd(FILE *fp, long o)
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{
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if (fseek(fp, o, SEEK_END) != 0) {
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puts("fseek() error!\n");
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exit(1);
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}
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}
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static long negoffset(long a, long romsz)
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{
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if (a > 0) {
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if (a & 0x80000000) /* the address in memory, and sizeof(long)
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is 8 */
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return a - 0x100000000;
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else /* the file offset */
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return a - romsz;
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} else {
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return a;
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}
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}
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int main(int argc, char *argv[])
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{
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FILE *fp, *fw1, *fw2;
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long offset1, offset2;
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if (argc != 4 && argc != 6)
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usage(argv[0]);
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fp = fopen(argv[1], "rb+");
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if (fp == NULL) {
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puts("Error opening firmware image!");
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exit(1);
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}
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if (argc == 6) {
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fw1 = fopen(argv[2], "rb");
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fw2 = fopen(argv[3], "rb");
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offset1 = strtoul(argv[4], NULL, 0);
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offset2 = strtoul(argv[5], NULL, 0);
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if (fw1 == NULL || fw2 == NULL) {
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puts("Error opening file!");
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exit(1);
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}
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} else {
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fw1 = NULL;
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fw2 = NULL;
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offset1 = strtoul(argv[2], NULL, 0);
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offset2 = strtoul(argv[3], NULL, 0);
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}
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if ((offset1 & 0xff) || (offset2 & 0xff)) {
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puts("The offsets must be aligned to 0x100");
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exit(1);
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}
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long romsz;
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FseekEnd(fp, -1);
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romsz = ftell(fp) + 1;
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printf("size of %s: 0x%lx\n", argv[1], romsz);
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if (romsz & 0xff) {
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puts("The ROM size must be multiple of 0x100");
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exit(1);
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}
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offset1 = negoffset(offset1, romsz);
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offset2 = negoffset(offset2, romsz);
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/* write two offsets to $s-0x100 */
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char offs[8];
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long os;
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os = 0x1000000 + offset1;
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offs[0] = os >> 16;
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offs[1] = os >> 8;
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offs[2] = 0xff - offs[0];
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offs[3] = 0xff - offs[1];
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os = 0x1000000 + offset2;
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offs[4] = os >> 16;
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offs[5] = os >> 8;
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offs[6] = 0xff - offs[4];
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offs[7] = 0xff - offs[5];
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for (size_t i = 0; i < 8; i++)
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printf("%02hhx ", offs[i]);
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puts("");
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FseekEnd(fp, -0x100);
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printf("writing to 0x%lx\n", ftell(fp));
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fwrite(offs, 1, 8, fp);
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if (argc == 6) {
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/* write fw1 and fw2 */
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char c;
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FseekEnd(fp, offset1);
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printf("writing to 0x%lx\n", ftell(fp));
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while (fread(&c, 1, 1, fw1) == 1)
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fwrite(&c, 1, 1, fp);
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FseekEnd(fp, offset2);
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printf("writing to 0x%lx\n", ftell(fp));
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while (fread(&c, 1, 1, fw2) == 1)
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fwrite(&c, 1, 1, fp);
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fclose(fw1);
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fclose(fw2);
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}
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fclose(fp);
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return 0;
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}
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