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kwbimage: Add support for extracting images via dumpimage tool

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The kwbimage library does not support extracting subimages. Implement it.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Pali Rohár 2021-07-23 11:14:34 +02:00 • committed by Stefan Roese
parent 40afc069b3
commit aa6943ca31
1 changed files with 64 additions and 8 deletions
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72
tools/kwbimage.c
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@ -1849,17 +1849,73 @@ static int kwbimage_generate(struct image_tool_params *params,
return 4 + (4 - s.st_size % 4) % 4;
}
static int kwbimage_extract_subimage(void *ptr, struct image_tool_params *params)
{
struct main_hdr_v1 *mhdr = (struct main_hdr_v1 *)ptr;
size_t header_size = kwbimage_header_size(ptr);
int idx = params->pflag;
int cur_idx = 0;
uint32_t offset;
ulong image;
ulong size;
if (image_version((void *)ptr) == 1 && (mhdr->ext & 0x1)) {
struct opt_hdr_v1 *ohdr = (struct opt_hdr_v1 *)
((uint8_t *)ptr +
sizeof(*mhdr));
while (1) {
uint32_t ohdr_size = (ohdr->headersz_msb << 16) |
le16_to_cpu(ohdr->headersz_lsb);
if (ohdr->headertype == OPT_HDR_V1_BINARY_TYPE) {
if (idx == cur_idx) {
image = (ulong)&ohdr->data[4 +
4 * ohdr->data[0]];
size = ohdr_size - 12 -
4 * ohdr->data[0];
goto extract;
}
++cur_idx;
}
if (!(*((uint8_t *)ohdr + ohdr_size - 4) & 0x1))
break;
ohdr = (struct opt_hdr_v1 *)((uint8_t *)ohdr +
ohdr_size);
}
}
if (idx != cur_idx) {
printf("Image %d is not present\n", idx);
return -1;
}
offset = le32_to_cpu(mhdr->srcaddr);
if (mhdr->blockid == IBR_HDR_SATA_ID) {
offset -= 1;
offset *= 512;
}
if (mhdr->blockid == IBR_HDR_SDIO_ID)
offset *= 512;
if (mhdr->blockid == IBR_HDR_PEX_ID && offset == 0xFFFFFFFF)
offset = header_size;
image = (ulong)((uint8_t *)ptr + offset);
size = le32_to_cpu(mhdr->blocksize) - 4;
extract:
return imagetool_save_subimage(params->outfile, image, size);
}
/*
* Report Error if xflag is set in addition to default
*/
static int kwbimage_check_params(struct image_tool_params *params)
{
if (params->iflag) {
fprintf(stderr, "%s: kwbimage does not support extract operation\n", params->cmdname);
return CFG_INVALID;
}
if (!params->imagename || !strlen(params->imagename)) {
if (!params->iflag && (!params->imagename || !strlen(params->imagename))) {
char *msg = "Configuration file for kwbimage creation omitted";
fprintf(stderr, "Error:%s - %s\n", params->cmdname, msg);
@ -1869,7 +1925,7 @@ static int kwbimage_check_params(struct image_tool_params *params)
return (params->dflag && (params->fflag || params->lflag)) ||
(params->fflag && (params->dflag || params->lflag)) ||
(params->lflag && (params->dflag || params->fflag)) ||
(params->xflag) || !(strlen(params->imagename));
(params->xflag);
}
/*
@ -1884,7 +1940,7 @@ U_BOOT_IMAGE_TYPE(
kwbimage_verify_header,
kwbimage_print_header,
kwbimage_set_header,
NULL,
kwbimage_extract_subimage,
kwbimage_check_image_types,
NULL,
kwbimage_generate