[people/ms/u-boot.git] / common / spl / spl_fit.c

/*
 * Copyright (C) 2016 Google, Inc
 * Written by Simon Glass <sjg@chromium.org>
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */

#include <common.h>
#include <errno.h>
#include <image.h>
#include <libfdt.h>
#include <spl.h>

#ifndef CONFIG_SYS_BOOTM_LEN
#define CONFIG_SYS_BOOTM_LEN	(64 << 20)
#endif

/**
 * spl_fit_get_image_node(): By using the matching configuration subnode,
 * retrieve the name of an image, specified by a property name and an index
 * into that.
 * @fit:	Pointer to the FDT blob.
 * @images:	Offset of the /images subnode.
 * @type:	Name of the property within the configuration subnode.
 * @index:	Index into the list of strings in this property.
 *
 * Return:	the node offset of the respective image node or a negative
 * 		error number.
 */
static int spl_fit_get_image_node(const void *fit, int images,
				  const char *type, int index)
{
	const char *name, *str;
	int node, conf_node;
	int len, i;

	conf_node = fit_find_config_node(fit);
	if (conf_node < 0) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
		printf("No matching DT out of these options:\n");
		for (node = fdt_first_subnode(fit, conf_node);
		     node >= 0;
		     node = fdt_next_subnode(fit, node)) {
			name = fdt_getprop(fit, node, "description", &len);
			printf("   %s\n", name);
		}
#endif
		return conf_node;
	}

	name = fdt_getprop(fit, conf_node, type, &len);
	if (!name) {
		debug("cannot find property '%s': %d\n", type, len);
		return -EINVAL;
	}

	str = name;
	for (i = 0; i < index; i++) {
		str = strchr(str, '\0') + 1;
		if (!str || (str - name >= len)) {
			debug("no string for index %d\n", index);
			return -E2BIG;
		}
	}

	debug("%s: '%s'\n", type, str);
	node = fdt_subnode_offset(fit, images, str);
	if (node < 0) {
		debug("cannot find image node '%s': %d\n", str, node);
		return -EINVAL;
	}

	return node;
}

static int get_aligned_image_offset(struct spl_load_info *info, int offset)
{
	/*
	 * If it is a FS read, get the first address before offset which is
	 * aligned to ARCH_DMA_MINALIGN. If it is raw read return the
	 * block number to which offset belongs.
	 */
	if (info->filename)
		return offset & ~(ARCH_DMA_MINALIGN - 1);

	return offset / info->bl_len;
}

static int get_aligned_image_overhead(struct spl_load_info *info, int offset)
{
	/*
	 * If it is a FS read, get the difference between the offset and
	 * the first address before offset which is aligned to
	 * ARCH_DMA_MINALIGN. If it is raw read return the offset within the
	 * block.
	 */
	if (info->filename)
		return offset & (ARCH_DMA_MINALIGN - 1);

	return offset % info->bl_len;
}

static int get_aligned_image_size(struct spl_load_info *info, int data_size,
				  int offset)
{
	data_size = data_size + get_aligned_image_overhead(info, offset);

	if (info->filename)
		return data_size;

	return (data_size + info->bl_len - 1) / info->bl_len;
}

/**
 * spl_load_fit_image(): load the image described in a certain FIT node
 * @info:	points to information about the device to load data from
 * @sector:	the start sector of the FIT image on the device
 * @fit:	points to the flattened device tree blob describing the FIT
 * 		image
 * @base_offset: the beginning of the data area containing the actual
 *		image data, relative to the beginning of the FIT
 * @node:	offset of the DT node describing the image to load (relative
 * 		to @fit)
 * @image_info:	will be filled with information about the loaded image
 * 		If the FIT node does not contain a "load" (address) property,
 * 		the image gets loaded to the address pointed to by the
 * 		load_addr member in this struct.
 *
 * Return:	0 on success or a negative error number.
 */
static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
			      void *fit, ulong base_offset, int node,
			      struct spl_image_info *image_info)
{
	int offset;
	size_t length;
	int len;
	ulong load_addr, load_ptr;
	void *src;
	ulong overhead;
	int nr_sectors;
	int align_len = ARCH_DMA_MINALIGN - 1;
	uint8_t image_comp = -1, type = -1;
	const void *data;

	if (IS_ENABLED(CONFIG_SPL_OS_BOOT) && IS_ENABLED(CONFIG_SPL_GZIP)) {
		if (fit_image_get_comp(fit, node, &image_comp))
			puts("Cannot get image compression format.\n");
		else
			debug("%s ", genimg_get_comp_name(image_comp));

		if (fit_image_get_type(fit, node, &type))
			puts("Cannot get image type.\n");
		else
			debug("%s ", genimg_get_type_name(type));
	}

	if (fit_image_get_load(fit, node, &load_addr))
		load_addr = image_info->load_addr;

	if (!fit_image_get_data_offset(fit, node, &offset)) {
		/* External data */
		offset += base_offset;
		if (fit_image_get_data_size(fit, node, &len))
			return -ENOENT;

		load_ptr = (load_addr + align_len) & ~align_len;
		length = len;

		overhead = get_aligned_image_overhead(info, offset);
		nr_sectors = get_aligned_image_size(info, length, offset);

		if (info->read(info,
			       sector + get_aligned_image_offset(info, offset),
			       nr_sectors, (void *)load_ptr) != nr_sectors)
			return -EIO;

		debug("External data: dst=%lx, offset=%x, size=%lx\n",
		      load_ptr, offset, (unsigned long)length);
		src = (void *)load_ptr + overhead;
	} else {
		/* Embedded data */
		if (fit_image_get_data(fit, node, &data, &length)) {
			puts("Cannot get image data/size\n");
			return -ENOENT;
		}
		debug("Embedded data: dst=%lx, size=%lx\n", load_addr,
		      (unsigned long)length);
		src = (void *)data;
	}

#ifdef CONFIG_SPL_FIT_IMAGE_POST_PROCESS
	board_fit_image_post_process(&src, &length);
#endif

	if (IS_ENABLED(CONFIG_SPL_OS_BOOT)	&&
	    IS_ENABLED(CONFIG_SPL_GZIP)		&&
	    image_comp == IH_COMP_GZIP		&&
	    type == IH_TYPE_KERNEL) {
		if (gunzip((void *)load_addr, CONFIG_SYS_BOOTM_LEN,
			   src, &length)) {
			puts("Uncompressing error\n");
			return -EIO;
		}
	} else {
		memcpy((void *)load_addr, src, length);
	}

	if (image_info) {
		image_info->load_addr = load_addr;
		image_info->size = length;
		image_info->entry_point = fdt_getprop_u32(fit, node, "entry");
	}

	return 0;
}

int spl_load_simple_fit(struct spl_image_info *spl_image,
			struct spl_load_info *info, ulong sector, void *fit)
{
	int sectors;
	ulong size;
	unsigned long count;
	struct spl_image_info image_info;
	bool boot_os = false;
	int node = -1;
	int images, ret;
	int base_offset, align_len = ARCH_DMA_MINALIGN - 1;
	int index = 0;

	/*
	 * For FIT with external data, figure out where the external images
	 * start. This is the base for the data-offset properties in each
	 * image.
	 */
	size = fdt_totalsize(fit);
	size = (size + 3) & ~3;
	base_offset = (size + 3) & ~3;

	/*
	 * So far we only have one block of data from the FIT. Read the entire
	 * thing, including that first block, placing it so it finishes before
	 * where we will load the image.
	 *
	 * Note that we will load the image such that its first byte will be
	 * at the load address. Since that byte may be part-way through a
	 * block, we may load the image up to one block before the load
	 * address. So take account of that here by subtracting an addition
	 * block length from the FIT start position.
	 *
	 * In fact the FIT has its own load address, but we assume it cannot
	 * be before CONFIG_SYS_TEXT_BASE.
	 *
	 * For FIT with data embedded, data is loaded as part of FIT image.
	 * For FIT with external data, data is not loaded in this step.
	 */
	fit = (void *)((CONFIG_SYS_TEXT_BASE - size - info->bl_len -
			align_len) & ~align_len);
	sectors = get_aligned_image_size(info, size, 0);
	count = info->read(info, sector, sectors, fit);
	debug("fit read sector %lx, sectors=%d, dst=%p, count=%lu\n",
	      sector, sectors, fit, count);
	if (count == 0)
		return -EIO;

	/* find the node holding the images information */
	images = fdt_path_offset(fit, FIT_IMAGES_PATH);
	if (images < 0) {
		debug("%s: Cannot find /images node: %d\n", __func__, images);
		return -1;
	}

#ifdef CONFIG_SPL_OS_BOOT
	/* Find OS image first */
	node = spl_fit_get_image_node(fit, images, FIT_KERNEL_PROP, 0);
	if (node < 0)
		debug("No kernel image.\n");
	else
		boot_os = true;
#endif
	/* find the U-Boot image */
	if (node < 0)
		node = spl_fit_get_image_node(fit, images, "firmware", 0);
	if (node < 0) {
		debug("could not find firmware image, trying loadables...\n");
		node = spl_fit_get_image_node(fit, images, "loadables", 0);
		/*
		 * If we pick the U-Boot image from "loadables", start at
		 * the second image when later loading additional images.
		 */
		index = 1;
	}
	if (node < 0) {
		debug("%s: Cannot find u-boot image node: %d\n",
		      __func__, node);
		return -1;
	}

	/* Load the image and set up the spl_image structure */
	ret = spl_load_fit_image(info, sector, fit, base_offset, node,
				 spl_image);
	if (ret)
		return ret;

#ifdef CONFIG_SPL_OS_BOOT
	if (!fit_image_get_os(fit, node, &spl_image->os))
		debug("Image OS is %s\n", genimg_get_os_name(spl_image->os));
#else
	spl_image->os = IH_OS_U_BOOT;
#endif

	if (!boot_os) {
		/* Figure out which device tree the board wants to use */
		node = spl_fit_get_image_node(fit, images, FIT_FDT_PROP, 0);
		if (node < 0) {
			debug("%s: cannot find FDT node\n", __func__);
			return node;
		}

		/*
		 * Read the device tree and place it after the image.
		 * Align the destination address to ARCH_DMA_MINALIGN.
		 */
		image_info.load_addr = spl_image->load_addr + spl_image->size;
		ret = spl_load_fit_image(info, sector, fit, base_offset, node,
					 &image_info);
		if (ret < 0)
			return ret;
	}

	/* Now check if there are more images for us to load */
	for (; ; index++) {
		node = spl_fit_get_image_node(fit, images, "loadables", index);
		if (node < 0)
			break;

		ret = spl_load_fit_image(info, sector, fit, base_offset, node,
					 &image_info);
		if (ret < 0)
			continue;

		/*
		 * If the "firmware" image did not provide an entry point,
		 * use the first valid entry point from the loadables.
		 */
		if (spl_image->entry_point == FDT_ERROR &&
		    image_info.entry_point != FDT_ERROR)
			spl_image->entry_point = image_info.entry_point;
	}

	/*
	 * If a platform does not provide CONFIG_SYS_UBOOT_START, U-Boot's
	 * Makefile will set it to 0 and it will end up as the entry point
	 * here. What it actually means is: use the load address.
	 */
	if (spl_image->entry_point == FDT_ERROR || spl_image->entry_point == 0)
		spl_image->entry_point = spl_image->load_addr;

	return 0;
}
Commit	Line	Data
f1dcee59 SG	1	/*
	2	* Copyright (C) 2016 Google, Inc
	3	* Written by Simon Glass <sjg@chromium.org>
	4	*
	5	* SPDX-License-Identifier: GPL-2.0+
	6	*/
	7
	8	#include <common.h>
	9	#include <errno.h>
	10	#include <image.h>
	11	#include <libfdt.h>
	12	#include <spl.h>
	13
7264f292 YS	14	#ifndef CONFIG_SYS_BOOTM_LEN
	15	#define CONFIG_SYS_BOOTM_LEN (64 << 20)
	16	#endif
	17
736806fb AP	18	/**
	19	* spl_fit_get_image_node(): By using the matching configuration subnode,
	20	* retrieve the name of an image, specified by a property name and an index
	21	* into that.
	22	* @fit: Pointer to the FDT blob.
	23	* @images: Offset of the /images subnode.
	24	* @type: Name of the property within the configuration subnode.
	25	* @index: Index into the list of strings in this property.
	26	*
	27	* Return: the node offset of the respective image node or a negative
	28	* error number.
	29	*/
	30	static int spl_fit_get_image_node(const void *fit, int images,
	31	const char *type, int index)
4b9340ab AP	32	{
	33	const char name, str;
	34	int node, conf_node;
	35	int len, i;
	36
3863f840	37	conf_node = fit_find_config_node(fit);
4b9340ab AP	38	if (conf_node < 0) {
	39	#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
	40	printf("No matching DT out of these options:\n");
	41	for (node = fdt_first_subnode(fit, conf_node);
	42	node >= 0;
	43	node = fdt_next_subnode(fit, node)) {
	44	name = fdt_getprop(fit, node, "description", &len);
	45	printf(" %s\n", name);
f1dcee59	46	}
4b9340ab AP	47	#endif
	48	return conf_node;
	49	}
f1dcee59	50
4b9340ab AP	51	name = fdt_getprop(fit, conf_node, type, &len);
	52	if (!name) {
	53	debug("cannot find property '%s': %d\n", type, len);
	54	return -EINVAL;
	55	}
f1dcee59	56
4b9340ab AP	57	str = name;
	58	for (i = 0; i < index; i++) {
	59	str = strchr(str, '\0') + 1;
	60	if (!str \|\| (str - name >= len)) {
	61	debug("no string for index %d\n", index);
	62	return -E2BIG;
	63	}
f1dcee59 SG	64	}
f1dcee59 SG	65
4b9340ab AP	66	debug("%s: '%s'\n", type, str);
	67	node = fdt_subnode_offset(fit, images, str);
	68	if (node < 0) {
	69	debug("cannot find image node '%s': %d\n", str, node);
	70	return -EINVAL;
f1dcee59	71	}
f1dcee59	72
736806fb	73	return node;
f1dcee59 SG	74	}
f1dcee59 SG	75
eafd5410 LV	76	static int get_aligned_image_offset(struct spl_load_info *info, int offset)
	77	{
	78	/*
	79	* If it is a FS read, get the first address before offset which is
	80	* aligned to ARCH_DMA_MINALIGN. If it is raw read return the
	81	* block number to which offset belongs.
	82	*/
	83	if (info->filename)
	84	return offset & ~(ARCH_DMA_MINALIGN - 1);
	85
	86	return offset / info->bl_len;
	87	}
	88
	89	static int get_aligned_image_overhead(struct spl_load_info *info, int offset)
	90	{
	91	/*
	92	* If it is a FS read, get the difference between the offset and
	93	* the first address before offset which is aligned to
	94	* ARCH_DMA_MINALIGN. If it is raw read return the offset within the
	95	* block.
	96	*/
	97	if (info->filename)
	98	return offset & (ARCH_DMA_MINALIGN - 1);
	99
	100	return offset % info->bl_len;
	101	}
	102
	103	static int get_aligned_image_size(struct spl_load_info *info, int data_size,
	104	int offset)
	105	{
3cc1f380 LV	106	data_size = data_size + get_aligned_image_overhead(info, offset);
3cc1f380 LV	107
eafd5410	108	if (info->filename)
3cc1f380	109	return data_size;
eafd5410 LV	110
	111	return (data_size + info->bl_len - 1) / info->bl_len;
	112	}
	113
8baa3818 AP	114	/**
	115	* spl_load_fit_image(): load the image described in a certain FIT node
	116	* @info: points to information about the device to load data from
	117	* @sector: the start sector of the FIT image on the device
	118	* @fit: points to the flattened device tree blob describing the FIT
	119	* image
	120	* @base_offset: the beginning of the data area containing the actual
	121	* image data, relative to the beginning of the FIT
	122	* @node: offset of the DT node describing the image to load (relative
	123	* to @fit)
	124	* @image_info: will be filled with information about the loaded image
	125	* If the FIT node does not contain a "load" (address) property,
	126	* the image gets loaded to the address pointed to by the
	127	* load_addr member in this struct.
	128	*
	129	* Return: 0 on success or a negative error number.
	130	*/
	131	static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
	132	void *fit, ulong base_offset, int node,
	133	struct spl_image_info *image_info)
	134	{
5fd13d97	135	int offset;
8baa3818	136	size_t length;
5fd13d97	137	int len;
8baa3818 AP	138	ulong load_addr, load_ptr;
	139	void *src;
	140	ulong overhead;
	141	int nr_sectors;
	142	int align_len = ARCH_DMA_MINALIGN - 1;
7264f292	143	uint8_t image_comp = -1, type = -1;
5fd13d97	144	const void *data;
7264f292 YS	145
	146	if (IS_ENABLED(CONFIG_SPL_OS_BOOT) && IS_ENABLED(CONFIG_SPL_GZIP)) {
	147	if (fit_image_get_comp(fit, node, &image_comp))
	148	puts("Cannot get image compression format.\n");
	149	else
	150	debug("%s ", genimg_get_comp_name(image_comp));
	151
	152	if (fit_image_get_type(fit, node, &type))
	153	puts("Cannot get image type.\n");
	154	else
	155	debug("%s ", genimg_get_type_name(type));
	156	}
8baa3818	157
5fd13d97	158	if (fit_image_get_load(fit, node, &load_addr))
8baa3818	159	load_addr = image_info->load_addr;
8baa3818	160
5fd13d97 YS	161	if (!fit_image_get_data_offset(fit, node, &offset)) {
	162	/* External data */
	163	offset += base_offset;
	164	if (fit_image_get_data_size(fit, node, &len))
	165	return -ENOENT;
	166
	167	load_ptr = (load_addr + align_len) & ~align_len;
	168	length = len;
	169
	170	overhead = get_aligned_image_overhead(info, offset);
	171	nr_sectors = get_aligned_image_size(info, length, offset);
	172
	173	if (info->read(info,
	174	sector + get_aligned_image_offset(info, offset),
	175	nr_sectors, (void *)load_ptr) != nr_sectors)
	176	return -EIO;
	177
	178	debug("External data: dst=%lx, offset=%x, size=%lx\n",
	179	load_ptr, offset, (unsigned long)length);
	180	src = (void *)load_ptr + overhead;
	181	} else {
	182	/* Embedded data */
	183	if (fit_image_get_data(fit, node, &data, &length)) {
	184	puts("Cannot get image data/size\n");
	185	return -ENOENT;
	186	}
	187	debug("Embedded data: dst=%lx, size=%lx\n", load_addr,
	188	(unsigned long)length);
	189	src = (void *)data;
	190	}
8baa3818	191
8baa3818 AP	192	#ifdef CONFIG_SPL_FIT_IMAGE_POST_PROCESS
	193	board_fit_image_post_process(&src, &length);
	194	#endif
	195
7264f292 YS	196	if (IS_ENABLED(CONFIG_SPL_OS_BOOT) &&
	197	IS_ENABLED(CONFIG_SPL_GZIP) &&
	198	image_comp == IH_COMP_GZIP &&
	199	type == IH_TYPE_KERNEL) {
	200	if (gunzip((void *)load_addr, CONFIG_SYS_BOOTM_LEN,
	201	src, &length)) {
	202	puts("Uncompressing error\n");
	203	return -EIO;
	204	}
	205	} else {
	206	memcpy((void *)load_addr, src, length);
	207	}
8baa3818 AP	208
	209	if (image_info) {
	210	image_info->load_addr = load_addr;
	211	image_info->size = length;
	212	image_info->entry_point = fdt_getprop_u32(fit, node, "entry");
	213	}
	214
	215	return 0;
	216	}
	217
f4d7d859 SG	218	int spl_load_simple_fit(struct spl_image_info *spl_image,
f4d7d859 SG	219	struct spl_load_info info, ulong sector, void fit)
f1dcee59 SG	220	{
f1dcee59 SG	221	int sectors;
8baa3818	222	ulong size;
f1dcee59	223	unsigned long count;
8baa3818	224	struct spl_image_info image_info;
c8bc3c0c YS	225	bool boot_os = false;
	226	int node = -1;
	227	int images, ret;
eafd5410	228	int base_offset, align_len = ARCH_DMA_MINALIGN - 1;
411cf32d	229	int index = 0;
f1dcee59 SG	230
f1dcee59 SG	231	/*
c8bc3c0c YS	232	* For FIT with external data, figure out where the external images
	233	* start. This is the base for the data-offset properties in each
	234	* image.
f1dcee59 SG	235	*/
	236	size = fdt_totalsize(fit);
	237	size = (size + 3) & ~3;
	238	base_offset = (size + 3) & ~3;
	239
	240	/*
	241	* So far we only have one block of data from the FIT. Read the entire
	242	* thing, including that first block, placing it so it finishes before
	243	* where we will load the image.
	244	*
	245	* Note that we will load the image such that its first byte will be
	246	* at the load address. Since that byte may be part-way through a
	247	* block, we may load the image up to one block before the load
	248	* address. So take account of that here by subtracting an addition
	249	* block length from the FIT start position.
	250	*
	251	* In fact the FIT has its own load address, but we assume it cannot
	252	* be before CONFIG_SYS_TEXT_BASE.
c8bc3c0c YS	253	*
	254	* For FIT with data embedded, data is loaded as part of FIT image.
	255	* For FIT with external data, data is not loaded in this step.
f1dcee59	256	*/
8b528709 LV	257	fit = (void *)((CONFIG_SYS_TEXT_BASE - size - info->bl_len -
8b528709 LV	258	align_len) & ~align_len);
eafd5410	259	sectors = get_aligned_image_size(info, size, 0);
f1dcee59 SG	260	count = info->read(info, sector, sectors, fit);
	261	debug("fit read sector %lx, sectors=%d, dst=%p, count=%lu\n",
	262	sector, sectors, fit, count);
	263	if (count == 0)
	264	return -EIO;
	265
736806fb	266	/* find the node holding the images information */
f1dcee59 SG	267	images = fdt_path_offset(fit, FIT_IMAGES_PATH);
	268	if (images < 0) {
	269	debug("%s: Cannot find /images node: %d\n", __func__, images);
	270	return -1;
	271	}
736806fb	272
c8bc3c0c YS	273	#ifdef CONFIG_SPL_OS_BOOT
	274	/* Find OS image first */
	275	node = spl_fit_get_image_node(fit, images, FIT_KERNEL_PROP, 0);
	276	if (node < 0)
	277	debug("No kernel image.\n");
	278	else
	279	boot_os = true;
	280	#endif
736806fb	281	/* find the U-Boot image */
c8bc3c0c YS	282	if (node < 0)
c8bc3c0c YS	283	node = spl_fit_get_image_node(fit, images, "firmware", 0);
f1dcee59	284	if (node < 0) {
736806fb AP	285	debug("could not find firmware image, trying loadables...\n");
736806fb AP	286	node = spl_fit_get_image_node(fit, images, "loadables", 0);
411cf32d AP	287	/*
	288	* If we pick the U-Boot image from "loadables", start at
	289	* the second image when later loading additional images.
	290	*/
	291	index = 1;
736806fb AP	292	}
	293	if (node < 0) {
	294	debug("%s: Cannot find u-boot image node: %d\n",
	295	__func__, node);
f1dcee59 SG	296	return -1;
	297	}
	298
8baa3818 AP	299	/* Load the image and set up the spl_image structure */
	300	ret = spl_load_fit_image(info, sector, fit, base_offset, node,
	301	spl_image);
	302	if (ret)
	303	return ret;
da74d1f3	304
c8bc3c0c YS	305	#ifdef CONFIG_SPL_OS_BOOT
	306	if (!fit_image_get_os(fit, node, &spl_image->os))
	307	debug("Image OS is %s\n", genimg_get_os_name(spl_image->os));
	308	#else
8baa3818	309	spl_image->os = IH_OS_U_BOOT;
c8bc3c0c	310	#endif
f1dcee59	311
c8bc3c0c YS	312	if (!boot_os) {
	313	/* Figure out which device tree the board wants to use */
	314	node = spl_fit_get_image_node(fit, images, FIT_FDT_PROP, 0);
	315	if (node < 0) {
	316	debug("%s: cannot find FDT node\n", __func__);
	317	return node;
	318	}
f1dcee59	319
c8bc3c0c YS	320	/*
	321	* Read the device tree and place it after the image.
	322	* Align the destination address to ARCH_DMA_MINALIGN.
	323	*/
	324	image_info.load_addr = spl_image->load_addr + spl_image->size;
	325	ret = spl_load_fit_image(info, sector, fit, base_offset, node,
	326	&image_info);
	327	if (ret < 0)
	328	return ret;
	329	}
411cf32d AP	330
	331	/* Now check if there are more images for us to load */
	332	for (; ; index++) {
	333	node = spl_fit_get_image_node(fit, images, "loadables", index);
	334	if (node < 0)
	335	break;
	336
	337	ret = spl_load_fit_image(info, sector, fit, base_offset, node,
	338	&image_info);
	339	if (ret < 0)
	340	continue;
	341
	342	/*
	343	* If the "firmware" image did not provide an entry point,
	344	* use the first valid entry point from the loadables.
	345	*/
	346	if (spl_image->entry_point == FDT_ERROR &&
	347	image_info.entry_point != FDT_ERROR)
	348	spl_image->entry_point = image_info.entry_point;
	349	}
	350
	351	/*
	352	* If a platform does not provide CONFIG_SYS_UBOOT_START, U-Boot's
	353	* Makefile will set it to 0 and it will end up as the entry point
	354	* here. What it actually means is: use the load address.
	355	*/
	356	if (spl_image->entry_point == FDT_ERROR \|\| spl_image->entry_point == 0)
	357	spl_image->entry_point = spl_image->load_addr;
	358
	359	return 0;
f1dcee59	360	}