+/**
+ * boot_get_kernel - find kernel image
+ * @os_data: pointer to a ulong variable, will hold os data start address
+ * @os_len: pointer to a ulong variable, will hold os data length
+ *
+ * boot_get_kernel() tries to find a kernel image, verifies its integrity
+ * and locates kernel data.
+ *
+ * returns:
+ * pointer to image header if valid image was found, plus kernel start
+ * address and length, otherwise NULL
+ */
+static void *boot_get_kernel (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
+ bootm_headers_t *images, ulong *os_data, ulong *os_len)
+{
+ image_header_t *hdr;
+ ulong img_addr;
+#if defined(CONFIG_FIT)
+ void *fit_hdr;
+ const char *fit_uname_config = NULL;
+ const char *fit_uname_kernel = NULL;
+ const void *data;
+ size_t len;
+ int cfg_noffset;
+ int os_noffset;
+#endif
+
+ /* find out kernel image address */
+ if (argc < 2) {
+ img_addr = load_addr;
+ debug ("* kernel: default image load address = 0x%08lx\n",
+ load_addr);
+#if defined(CONFIG_FIT)
+ } else if (fit_parse_conf (argv[1], load_addr, &img_addr,
+ &fit_uname_config)) {
+ debug ("* kernel: config '%s' from image at 0x%08lx\n",
+ fit_uname_config, img_addr);
+ } else if (fit_parse_subimage (argv[1], load_addr, &img_addr,
+ &fit_uname_kernel)) {
+ debug ("* kernel: subimage '%s' from image at 0x%08lx\n",
+ fit_uname_kernel, img_addr);
+#endif
+ } else {
+ img_addr = simple_strtoul(argv[1], NULL, 16);
+ debug ("* kernel: cmdline image address = 0x%08lx\n", img_addr);
+ }
+
+ show_boot_progress (1);
+
+ /* copy from dataflash if needed */
+ img_addr = genimg_get_image (img_addr);
+
+ /* check image type, for FIT images get FIT kernel node */
+ *os_data = *os_len = 0;
+ switch (genimg_get_format ((void *)img_addr)) {
+ case IMAGE_FORMAT_LEGACY:
+ printf ("## Booting kernel from Legacy Image at %08lx ...\n",
+ img_addr);
+ hdr = image_get_kernel (img_addr, images->verify);
+ if (!hdr)
+ return NULL;
+ show_boot_progress (5);
+
+ /* get os_data and os_len */
+ switch (image_get_type (hdr)) {
+ case IH_TYPE_KERNEL:
+ *os_data = image_get_data (hdr);
+ *os_len = image_get_data_size (hdr);
+ break;
+ case IH_TYPE_MULTI:
+ image_multi_getimg (hdr, 0, os_data, os_len);
+ break;
+ case IH_TYPE_STANDALONE:
+ if (argc >2) {
+ hdr->ih_load = htonl(simple_strtoul(argv[2], NULL, 16));
+ }
+ *os_data = image_get_data (hdr);
+ *os_len = image_get_data_size (hdr);
+ break;
+ default:
+ printf ("Wrong Image Type for %s command\n", cmdtp->name);
+ show_boot_progress (-5);
+ return NULL;
+ }
+
+ /*
+ * copy image header to allow for image overwrites during kernel
+ * decompression.
+ */
+ memmove (&images->legacy_hdr_os_copy, hdr, sizeof(image_header_t));
+
+ /* save pointer to image header */
+ images->legacy_hdr_os = hdr;
+
+ images->legacy_hdr_valid = 1;
+ show_boot_progress (6);