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mkimxboot: add an option to extract the of without processing

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Change-Id: Ie370f152f4efff4428ee023a9211b82a77fd1df4
This commit is contained in:
Amaury Pouly 2013-01-26 18:24:06 +00:00
parent b6cad07f33
commit f6e4456cc4
3 changed files with 119 additions and 2 deletions
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103
rbutil/mkimxboot/mkimxboot.c
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@ -495,3 +495,106 @@ enum imx_error_t mkimxboot(const char *infile, const char *bootfile,
sb_free(sb_file);
return ret;
}
enum imx_error_t extract_firmware(const char *infile,
enum imx_firmware_variant_t fw_variant, const char *outfile)
{
/* Dump tables */
if(fw_variant > VARIANT_COUNT) {
return IMX_ERROR;
}
dump_imx_dev_info("[INFO] ");
/* compute MD5 sum of the file */
uint8_t file_md5sum[16];
FILE *f = fopen(infile, "rb");
if(f == NULL)
{
printf("[ERR] Cannot open input file\n");
return IMX_OPEN_ERROR;
}
fseek(f, 0, SEEK_END);
size_t sz = ftell(f);
fseek(f, 0, SEEK_SET);
void *buf = xmalloc(sz);
if(fread(buf, sz, 1, f) != 1)
{
fclose(f);
free(buf);
printf("[ERR] Cannot read file\n");
return IMX_READ_ERROR;
}
md5_context ctx;
md5_starts(&ctx);
md5_update(&ctx, buf, sz);
md5_finish(&ctx, file_md5sum);
fclose(f);
printf("[INFO] MD5 sum of the file: ");
print_hex(file_md5sum, 16, true);
/* find model */
enum imx_model_t model;
int md5_idx;
do
{
int i = 0;
while(i < NR_IMX_SUMS)
{
uint8_t md5[20];
if(strlen(imx_sums[i].md5sum) != 32)
{
printf("[INFO] Invalid MD5 sum in imx_sums\n");
return IMX_ERROR;
}
for(int j = 0; j < 16; j++)
{
byte a, b;
if(convxdigit(imx_sums[i].md5sum[2 * j], &a) || convxdigit(imx_sums[i].md5sum[2 * j + 1], &b))
{
printf("[ERR][INTERNAL] Bad checksum format: %s\n", imx_sums[i].md5sum);
free(buf);
return IMX_ERROR;
}
md5[j] = (a << 4) | b;
}
if(memcmp(file_md5sum, md5, 16) == 0)
break;
i++;
}
if(i == NR_IMX_SUMS)
{
printf("[ERR] MD5 sum doesn't match any known file\n");
return IMX_NO_MATCH;
}
model = imx_sums[i].model;
md5_idx = i;
}while(0);
printf("[INFO] File is for model %d (%s, version %s)\n", model,
imx_models[model].model_name, imx_sums[md5_idx].version);
if(imx_sums[md5_idx].fw_variants[fw_variant].size == 0)
{
printf("[ERR] Input file does not contain variant '%s'\n", imx_fw_variant[fw_variant]);
free(buf);
return IMX_VARIANT_MISMATCH;
}
f = fopen(outfile, "wb");
if(f == NULL)
{
printf("[ERR] Cannot open input file\n");
free(buf);
return IMX_OPEN_ERROR;
}
enum imx_error_t ret = IMX_SUCCESS;
if(fwrite(buf + imx_sums[md5_idx].fw_variants[fw_variant].offset,
imx_sums[md5_idx].fw_variants[fw_variant].size, 1, f) != 1)
{
printf("[ERR] Cannot write file\n");
ret = IMX_ERROR;
}
fclose(f);
free(buf);
return ret;
}