fdtdec.c

	mem = fdt_getprop(blob, config_node, prop_name, NULL);
	if (!mem) {
		debug("%s: No memory type for '%s', using /memory\n", __func__,
		      prop_name);
		mem = "/memory";
	}

	node = fdt_path_offset(blob, mem);
	if (node < 0) {
		debug("%s: Failed to find node '%s': %s\n", __func__, mem,
		      fdt_strerror(node));
		return -ENOENT;
	}

	/*
	 * Not strictly correct - the memory may have multiple banks. We just
	 * use the first
	 */
	if (fdtdec_decode_region(blob, node, "reg", &base, &size)) {
		debug("%s: Failed to decode memory region %s\n", __func__,
		      mem);
		return -EINVAL;
	}

	snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
		 suffix);
	if (fdtdec_decode_region(blob, config_node, prop_name, &offset,
				 &offset_size)) {
		debug("%s: Failed to decode memory region '%s'\n", __func__,
		      prop_name);
		return -EINVAL;
	}

	*basep = base + offset;
	*sizep = offset_size;

	return 0;
}

int fdtdec_setup(void)
{
#ifdef CONFIG_OF_CONTROL
# ifdef CONFIG_OF_EMBED
	/* Get a pointer to the FDT */
	gd->fdt_blob = __dtb_dt_begin;
# elif defined CONFIG_OF_SEPARATE
#  ifdef CONFIG_SPL_BUILD
	/* FDT is at end of BSS */
	gd->fdt_blob = (ulong *)&__bss_end;
#  else
	/* FDT is at end of image */
	gd->fdt_blob = (ulong *)&_end;
#endif
# elif defined(CONFIG_OF_HOSTFILE)
	if (sandbox_read_fdt_from_file()) {
		puts("Failed to read control FDT\n");
		return -1;
	}
# endif
# ifndef CONFIG_SPL_BUILD
	/* Allow the early environment to override the fdt address */
	gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
						(uintptr_t)gd->fdt_blob);
# endif
#endif
	return fdtdec_prepare_fdt();
}

#endif /* !USE_HOSTCC */