/**
* image_get_ramdisk - get and verify ramdisk image
* @rd_addr: ramdisk image start address
* @arch: expected ramdisk architecture
* @verify: checksum verification flag
*
* image_get_ramdisk() returns a pointer to the verified ramdisk image
* header. Routine receives image start address and expected architecture
* flag. Verification done covers data and header integrity and os/type/arch
* fields checking.
*
* If dataflash support is enabled routine checks for dataflash addresses
* and handles required dataflash reads.
*
* returns:
* pointer to a ramdisk image header, if image was found and valid
* otherwise, return NULL
*/
static const image_header_t *image_get_ramdisk(ulong rd_addr, uint8_t arch,
int verify)
{
const image_header_t *rd_hdr = (const image_header_t *)rd_addr;
if (!image_check_magic(rd_hdr)) {
puts("Bad Magic Number\n");
bootstage_error(BOOTSTAGE_ID_RD_MAGIC);
return NULL;
}
if (!image_check_hcrc(rd_hdr)) {
puts("Bad Header Checksum\n");
bootstage_error(BOOTSTAGE_ID_RD_HDR_CHECKSUM);
return NULL;
}
bootstage_mark(BOOTSTAGE_ID_RD_MAGIC);
image_print_contents(rd_hdr);
if (verify) {
puts(" Verifying Checksum ... ");
if (!image_check_dcrc(rd_hdr)) {
puts("Bad Data CRC\n");
bootstage_error(BOOTSTAGE_ID_RD_CHECKSUM);
return NULL;
}
puts("OK\n");
}
bootstage_mark(BOOTSTAGE_ID_RD_HDR_CHECKSUM);
if (!image_check_os(rd_hdr, IH_OS_LINUX) ||
!image_check_arch(rd_hdr, arch) ||
!image_check_type(rd_hdr, IH_TYPE_RAMDISK)) {
printf("No Linux %s Ramdisk Image\n",
genimg_get_arch_name(arch));
bootstage_error(BOOTSTAGE_ID_RAMDISK);
return NULL;
}
return rd_hdr;
}
static int
mpl_prg_image(uchar *ld_addr)
{
unsigned long len;
uchar *data;
image_header_t *hdr = (image_header_t *)ld_addr;
int rc;
#if defined(CONFIG_FIT)
if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
puts ("Non legacy image format not supported\n");
return -1;
}
#endif
if (!image_check_magic (hdr)) {
puts("Bad Magic Number\n");
return 1;
}
image_print_contents (hdr);
if (!image_check_os (hdr, IH_OS_U_BOOT)) {
puts("No U-Boot Image\n");
return 1;
}
if (!image_check_type (hdr, IH_TYPE_FIRMWARE)) {
puts("No Firmware Image\n");
return 1;
}
if (!image_check_hcrc (hdr)) {
puts("Bad Header Checksum\n");
return 1;
}
puts("Verifying Checksum ... ");
if (!image_check_dcrc (hdr)) {
puts("Bad Data CRC\n");
return 1;
}
puts("OK\n");
data = (uchar *)image_get_data (hdr);
len = image_get_data_size (hdr);
if (image_get_comp (hdr) != IH_COMP_NONE) {
uchar *buf;
/* reserve space for uncompressed image */
if ((buf = malloc(IMAGE_SIZE)) == NULL) {
puts("Insufficient space for decompression\n");
return 1;
}
switch (image_get_comp (hdr)) {
case IH_COMP_GZIP:
puts("Uncompressing (GZIP) ... ");
rc = gunzip ((void *)(buf), IMAGE_SIZE, data, &len);
if (rc != 0) {
puts("GUNZIP ERROR\n");
free(buf);
return 1;
}
puts("OK\n");
break;
#ifdef CONFIG_BZIP2
case IH_COMP_BZIP2:
puts("Uncompressing (BZIP2) ... ");
{
uint retlen = IMAGE_SIZE;
rc = BZ2_bzBuffToBuffDecompress ((char *)(buf), &retlen,
(char *)data, len, 0, 0);
len = retlen;
}
if (rc != BZ_OK) {
printf ("BUNZIP2 ERROR: %d\n", rc);
free(buf);
return 1;
}
puts("OK\n");
break;
#endif
default:
printf ("Unimplemented compression type %d\n",
image_get_comp (hdr));
free(buf);
return 1;
}
rc = mpl_prg(buf, len);
free(buf);
} else {
rc = mpl_prg(data, len);
}
return(rc);
}
int bootm_image(const image_header_t *header)
{
const char * failure = NULL;
const char * type_name = NULL;
uint32_t load, image_start, image_len;
/* Display to standard output the image contents. */
image_print_contents(header);
/* Validate the image header and image data CRCs */
puts(" Verifying Checksum ... ");
{
if (!image_check_hcrc(header)) {
failure = "Header Invalid\n";
goto fail;
}
if (!image_check_dcrc(header)) {
failure = "Data Invalid\n";
goto fail;
}
}
puts("OK\n");
/* We ONLY support uncompressed ARM U-Boot firmware images. Check
* to make sure that's what we are going to boot.
*/
if (!image_check_type(header, IH_TYPE_FIRMWARE)) {
failure = "Image is not a firmware image\n";
goto fail;
}
if (!image_check_os(header, IH_OS_U_BOOT)) {
failure = "Image is not u-boot firmware\n";
goto fail;
}
if (image_get_comp(header) != IH_COMP_NONE) {
failure = "Image is compressed\n";
goto fail;
}
if (!image_check_target_arch(header)) {
failure = "Image is not built for this processor\n";
goto fail;
}
type_name = genimg_get_type_name(image_get_type(header));
printf(" Loading %s ... ", type_name);
{
load = image_get_load(header);
image_start = image_get_data(header);
image_len = image_get_data_size(header);
memmove_wd((void *)load, (void *)image_start, image_len, CHUNKSZ);
}
puts("OK\n");
/* This should never return. */
exec(load, type_name);
/* However, if it does, return failed status. */
fail:
puts(failure);
return (BOOTM_STATUS_FAILURE);
}
