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

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

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

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

/**
 * spl_fit_get_image_name(): 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.
 * @outname:	Name of the image
 *
 * Return:	0 on success, or a negative error number
 */
static int spl_fit_get_image_name(const void *fit, int images,
				  const char *type, int index,
				  char **outname)
{
	const char *name, *str;
	__maybe_unused int node;
	int 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;
		}
	}

	*outname = (char *)str;
	return 0;
}

/**
 * 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)
{
	char *str;
	int err;
	int node;

	err = spl_fit_get_image_name(fit, images, type, index, &str);
	if (err)
		return err;

	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 size;
	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;
	bool external_data = false;
#ifdef CONFIG_SPL_FIT_SIGNATURE
	int ret;
#endif

	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_position(fit, node, &offset)) {
		external_data = true;
	} else if (!fit_image_get_data_offset(fit, node, &offset)) {
		offset += base_offset;
		external_data = true;
	}

	if (external_data) {
		/* External data */
		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) {
		size = length;
		if (gunzip((void *)load_addr, CONFIG_SYS_BOOTM_LEN,
			   src, &size)) {
			puts("Uncompressing error\n");
			return -EIO;
		}
		length = size;
	} 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");
	}

#ifdef CONFIG_SPL_FIT_SIGNATURE
	printf("## Checking hash(es) for Image %s ...\n",
	       fit_get_name(fit, node, NULL));
	ret = fit_image_verify_with_data(fit, node,
					 (const void *)load_addr, length);
	printf("\n");
	return !ret;
#else
	return 0;
#endif
}

static int spl_fit_append_fdt(struct spl_image_info *spl_image,
			      struct spl_load_info *info, ulong sector,
			      void *fit, int images, ulong base_offset)
{
	struct spl_image_info image_info;
	int node, ret;

	/* 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;

	/* Make the load-address of the FDT available for the SPL framework */
	spl_image->fdt_addr = (void *)image_info.load_addr;
#if !CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
	/* Try to make space, so we can inject details on the loadables */
	ret = fdt_shrink_to_minimum(spl_image->fdt_addr, 8192);
#endif

	return ret;
}

static int spl_fit_record_loadable(const void *fit, int images, int index,
				   void *blob, struct spl_image_info *image)
{
	int ret = 0;
#if !CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
	char *name;
	int node;

	ret = spl_fit_get_image_name(fit, images, "loadables",
				     index, &name);
	if (ret < 0)
		return ret;

	node = spl_fit_get_image_node(fit, images, "loadables", index);

	ret = fdt_record_loadable(blob, index, name, image->load_addr,
				  image->size, image->entry_point,
				  fdt_getprop(fit, node, "type", NULL),
				  fdt_getprop(fit, node, "os", NULL));
#endif
	return ret;
}

static int spl_fit_image_get_os(const void *fit, int noffset, uint8_t *os)
{
#if CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
	return -ENOTSUPP;
#else
	return fit_image_get_os(fit, noffset, os);
#endif
}

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;
	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;
	}

	/*
	 * Find the U-Boot image using the following search order:
	 *   - start at 'firmware' (e.g. an ARM Trusted Firmware)
	 *   - fall back 'kernel' (e.g. a Falcon-mode OS boot
	 *   - fall back to using the first 'loadables' entry
	 */
	if (node < 0)
		node = spl_fit_get_image_node(fit, images, FIT_FIRMWARE_PROP,
					      0);
#ifdef CONFIG_SPL_OS_BOOT
	if (node < 0)
		node = spl_fit_get_image_node(fit, images, FIT_KERNEL_PROP, 0);
#endif
	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;

	/*
	 * For backward compatibility, we treat the first node that is
	 * as a U-Boot image, if no OS-type has been declared.
	 */
	if (!spl_fit_image_get_os(fit, node, &spl_image->os))
		debug("Image OS is %s\n", genimg_get_os_name(spl_image->os));
#if !defined(CONFIG_SPL_OS_BOOT)
	else
		spl_image->os = IH_OS_U_BOOT;
#endif

	/*
	 * Booting a next-stage U-Boot may require us to append the FDT.
	 * We allow this to fail, as the U-Boot image might embed its FDT.
	 */
	if (spl_image->os == IH_OS_U_BOOT)
		spl_fit_append_fdt(spl_image, info, sector, fit,
				   images, base_offset);

	/* Now check if there are more images for us to load */
	for (; ; index++) {
		uint8_t os_type = IH_OS_INVALID;

		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 (!spl_fit_image_get_os(fit, node, &os_type))
			debug("Loadable is %s\n", genimg_get_os_name(os_type));

		if (os_type == IH_OS_U_BOOT) {
			spl_fit_append_fdt(&image_info, info, sector,
					   fit, images, base_offset);
			spl_image->fdt_addr = image_info.fdt_addr;
		}

		/*
		 * 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;

		/* Record our loadables into the FDT */
		if (spl_image->fdt_addr)
			spl_fit_record_loadable(fit, images, index,
						spl_image->fdt_addr,
						&image_info);
	}

	/*
	 * 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
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
f1dcee59 SG	2	/*
	3	* Copyright (C) 2016 Google, Inc
	4	* Written by Simon Glass <sjg@chromium.org>
f1dcee59 SG	5	*/
	6
	7	#include <common.h>
	8	#include <errno.h>
	9	#include <image.h>
b08c8c48	10	#include <linux/libfdt.h>
f1dcee59 SG	11	#include <spl.h>
f1dcee59 SG	12
7264f292 YS	13	#ifndef CONFIG_SYS_BOOTM_LEN
	14	#define CONFIG_SYS_BOOTM_LEN (64 << 20)
	15	#endif
	16
736806fb	17	/**
a616c783	18	* spl_fit_get_image_name(): By using the matching configuration subnode,
736806fb AP	19	* retrieve the name of an image, specified by a property name and an index
	20	* into that.
	21	* @fit: Pointer to the FDT blob.
	22	* @images: Offset of the /images subnode.
	23	* @type: Name of the property within the configuration subnode.
	24	* @index: Index into the list of strings in this property.
a616c783	25	* @outname: Name of the image
736806fb	26	*
a616c783	27	* Return: 0 on success, or a negative error number
736806fb	28	*/
a616c783 PT	29	static int spl_fit_get_image_name(const void *fit, int images,
	30	const char *type, int index,
	31	char **outname)
4b9340ab AP	32	{
4b9340ab AP	33	const char name, str;
a616c783 PT	34	__maybe_unused int node;
a616c783 PT	35	int conf_node;
4b9340ab AP	36	int len, i;
4b9340ab AP	37
3863f840	38	conf_node = fit_find_config_node(fit);
4b9340ab AP	39	if (conf_node < 0) {
	40	#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
	41	printf("No matching DT out of these options:\n");
	42	for (node = fdt_first_subnode(fit, conf_node);
	43	node >= 0;
	44	node = fdt_next_subnode(fit, node)) {
	45	name = fdt_getprop(fit, node, "description", &len);
	46	printf(" %s\n", name);
f1dcee59	47	}
4b9340ab AP	48	#endif
	49	return conf_node;
	50	}
f1dcee59	51
4b9340ab AP	52	name = fdt_getprop(fit, conf_node, type, &len);
	53	if (!name) {
	54	debug("cannot find property '%s': %d\n", type, len);
	55	return -EINVAL;
	56	}
f1dcee59	57
4b9340ab AP	58	str = name;
	59	for (i = 0; i < index; i++) {
	60	str = strchr(str, '\0') + 1;
	61	if (!str \|\| (str - name >= len)) {
	62	debug("no string for index %d\n", index);
	63	return -E2BIG;
	64	}
f1dcee59 SG	65	}
f1dcee59 SG	66
a616c783 PT	67	outname = (char )str;
	68	return 0;
	69	}
	70
	71	/**
	72	* spl_fit_get_image_node(): By using the matching configuration subnode,
	73	* retrieve the name of an image, specified by a property name and an index
	74	* into that.
	75	* @fit: Pointer to the FDT blob.
	76	* @images: Offset of the /images subnode.
	77	* @type: Name of the property within the configuration subnode.
	78	* @index: Index into the list of strings in this property.
	79	*
	80	* Return: the node offset of the respective image node or a negative
	81	* error number.
	82	*/
	83	static int spl_fit_get_image_node(const void *fit, int images,
	84	const char *type, int index)
	85	{
	86	char *str;
	87	int err;
	88	int node;
	89
	90	err = spl_fit_get_image_name(fit, images, type, index, &str);
	91	if (err)
	92	return err;
	93
4b9340ab	94	debug("%s: '%s'\n", type, str);
a616c783	95
4b9340ab AP	96	node = fdt_subnode_offset(fit, images, str);
	97	if (node < 0) {
	98	debug("cannot find image node '%s': %d\n", str, node);
	99	return -EINVAL;
f1dcee59	100	}
f1dcee59	101
736806fb	102	return node;
f1dcee59 SG	103	}
f1dcee59 SG	104
eafd5410 LV	105	static int get_aligned_image_offset(struct spl_load_info *info, int offset)
	106	{
	107	/*
	108	* If it is a FS read, get the first address before offset which is
	109	* aligned to ARCH_DMA_MINALIGN. If it is raw read return the
	110	* block number to which offset belongs.
	111	*/
	112	if (info->filename)
	113	return offset & ~(ARCH_DMA_MINALIGN - 1);
	114
	115	return offset / info->bl_len;
	116	}
	117
	118	static int get_aligned_image_overhead(struct spl_load_info *info, int offset)
	119	{
	120	/*
	121	* If it is a FS read, get the difference between the offset and
	122	* the first address before offset which is aligned to
	123	* ARCH_DMA_MINALIGN. If it is raw read return the offset within the
	124	* block.
	125	*/
	126	if (info->filename)
	127	return offset & (ARCH_DMA_MINALIGN - 1);
	128
	129	return offset % info->bl_len;
	130	}
	131
	132	static int get_aligned_image_size(struct spl_load_info *info, int data_size,
	133	int offset)
	134	{
3cc1f380 LV	135	data_size = data_size + get_aligned_image_overhead(info, offset);
3cc1f380 LV	136
eafd5410	137	if (info->filename)
3cc1f380	138	return data_size;
eafd5410 LV	139
	140	return (data_size + info->bl_len - 1) / info->bl_len;
	141	}
	142
8baa3818 AP	143	/**
	144	* spl_load_fit_image(): load the image described in a certain FIT node
	145	* @info: points to information about the device to load data from
	146	* @sector: the start sector of the FIT image on the device
	147	* @fit: points to the flattened device tree blob describing the FIT
a616c783	148	* image
8baa3818 AP	149	* @base_offset: the beginning of the data area containing the actual
	150	* image data, relative to the beginning of the FIT
	151	* @node: offset of the DT node describing the image to load (relative
a616c783	152	* to @fit)
8baa3818	153	* @image_info: will be filled with information about the loaded image
a616c783 PT	154	* If the FIT node does not contain a "load" (address) property,
	155	* the image gets loaded to the address pointed to by the
	156	* load_addr member in this struct.
8baa3818 AP	157	*
	158	* Return: 0 on success or a negative error number.
	159	*/
	160	static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
	161	void *fit, ulong base_offset, int node,
	162	struct spl_image_info *image_info)
	163	{
5fd13d97	164	int offset;
8baa3818	165	size_t length;
5fd13d97	166	int len;
933f67aa	167	ulong size;
8baa3818 AP	168	ulong load_addr, load_ptr;
	169	void *src;
	170	ulong overhead;
	171	int nr_sectors;
	172	int align_len = ARCH_DMA_MINALIGN - 1;
7264f292	173	uint8_t image_comp = -1, type = -1;
5fd13d97	174	const void *data;
a1be94b6	175	bool external_data = false;
5c643db4 JN	176	#ifdef CONFIG_SPL_FIT_SIGNATURE
	177	int ret;
	178	#endif
7264f292 YS	179
	180	if (IS_ENABLED(CONFIG_SPL_OS_BOOT) && IS_ENABLED(CONFIG_SPL_GZIP)) {
	181	if (fit_image_get_comp(fit, node, &image_comp))
	182	puts("Cannot get image compression format.\n");
	183	else
	184	debug("%s ", genimg_get_comp_name(image_comp));
	185
	186	if (fit_image_get_type(fit, node, &type))
	187	puts("Cannot get image type.\n");
	188	else
	189	debug("%s ", genimg_get_type_name(type));
	190	}
8baa3818	191
5fd13d97	192	if (fit_image_get_load(fit, node, &load_addr))
8baa3818	193	load_addr = image_info->load_addr;
8baa3818	194
a1be94b6 PF	195	if (!fit_image_get_data_position(fit, node, &offset)) {
	196	external_data = true;
	197	} else if (!fit_image_get_data_offset(fit, node, &offset)) {
5fd13d97	198	offset += base_offset;
a1be94b6 PF	199	external_data = true;
	200	}
	201
	202	if (external_data) {
	203	/* External data */
5fd13d97 YS	204	if (fit_image_get_data_size(fit, node, &len))
	205	return -ENOENT;
	206
	207	load_ptr = (load_addr + align_len) & ~align_len;
	208	length = len;
	209
	210	overhead = get_aligned_image_overhead(info, offset);
	211	nr_sectors = get_aligned_image_size(info, length, offset);
	212
	213	if (info->read(info,
	214	sector + get_aligned_image_offset(info, offset),
	215	nr_sectors, (void *)load_ptr) != nr_sectors)
	216	return -EIO;
	217
	218	debug("External data: dst=%lx, offset=%x, size=%lx\n",
	219	load_ptr, offset, (unsigned long)length);
	220	src = (void *)load_ptr + overhead;
	221	} else {
	222	/* Embedded data */
	223	if (fit_image_get_data(fit, node, &data, &length)) {
	224	puts("Cannot get image data/size\n");
	225	return -ENOENT;
	226	}
	227	debug("Embedded data: dst=%lx, size=%lx\n", load_addr,
	228	(unsigned long)length);
	229	src = (void *)data;
	230	}
8baa3818	231
8baa3818 AP	232	#ifdef CONFIG_SPL_FIT_IMAGE_POST_PROCESS
	233	board_fit_image_post_process(&src, &length);
	234	#endif
	235
7264f292 YS	236	if (IS_ENABLED(CONFIG_SPL_OS_BOOT) &&
	237	IS_ENABLED(CONFIG_SPL_GZIP) &&
	238	image_comp == IH_COMP_GZIP &&
	239	type == IH_TYPE_KERNEL) {
933f67aa	240	size = length;
7264f292	241	if (gunzip((void *)load_addr, CONFIG_SYS_BOOTM_LEN,
933f67aa	242	src, &size)) {
7264f292 YS	243	puts("Uncompressing error\n");
	244	return -EIO;
	245	}
933f67aa	246	length = size;
7264f292 YS	247	} else {
	248	memcpy((void *)load_addr, src, length);
	249	}
8baa3818 AP	250
	251	if (image_info) {
	252	image_info->load_addr = load_addr;
	253	image_info->size = length;
	254	image_info->entry_point = fdt_getprop_u32(fit, node, "entry");
	255	}
	256
5c643db4 JN	257	#ifdef CONFIG_SPL_FIT_SIGNATURE
	258	printf("## Checking hash(es) for Image %s ...\n",
	259	fit_get_name(fit, node, NULL));
	260	ret = fit_image_verify_with_data(fit, node,
	261	(const void *)load_addr, length);
	262	printf("\n");
	263	return !ret;
	264	#else
8baa3818	265	return 0;
5c643db4	266	#endif
8baa3818 AP	267	}
8baa3818 AP	268
d879616e PT	269	static int spl_fit_append_fdt(struct spl_image_info *spl_image,
	270	struct spl_load_info *info, ulong sector,
	271	void *fit, int images, ulong base_offset)
	272	{
	273	struct spl_image_info image_info;
	274	int node, ret;
	275
	276	/* Figure out which device tree the board wants to use */
	277	node = spl_fit_get_image_node(fit, images, FIT_FDT_PROP, 0);
	278	if (node < 0) {
	279	debug("%s: cannot find FDT node\n", __func__);
	280	return node;
	281	}
	282
	283	/*
	284	* Read the device tree and place it after the image.
	285	* Align the destination address to ARCH_DMA_MINALIGN.
	286	*/
	287	image_info.load_addr = spl_image->load_addr + spl_image->size;
	288	ret = spl_load_fit_image(info, sector, fit, base_offset, node,
	289	&image_info);
a616c783 PT	290
	291	if (ret < 0)
	292	return ret;
	293
	294	/* Make the load-address of the FDT available for the SPL framework */
	295	spl_image->fdt_addr = (void *)image_info.load_addr;
337bbb62	296	#if !CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
a616c783 PT	297	/* Try to make space, so we can inject details on the loadables */
a616c783 PT	298	ret = fdt_shrink_to_minimum(spl_image->fdt_addr, 8192);
337bbb62	299	#endif
a616c783 PT	300
	301	return ret;
	302	}
	303
	304	static int spl_fit_record_loadable(const void *fit, int images, int index,
	305	void blob, struct spl_image_info image)
	306	{
337bbb62 PT	307	int ret = 0;
337bbb62 PT	308	#if !CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
a616c783	309	char *name;
337bbb62	310	int node;
a616c783 PT	311
	312	ret = spl_fit_get_image_name(fit, images, "loadables",
	313	index, &name);
	314	if (ret < 0)
	315	return ret;
	316
	317	node = spl_fit_get_image_node(fit, images, "loadables", index);
	318
	319	ret = fdt_record_loadable(blob, index, name, image->load_addr,
	320	image->size, image->entry_point,
	321	fdt_getprop(fit, node, "type", NULL),
	322	fdt_getprop(fit, node, "os", NULL));
337bbb62	323	#endif
d879616e PT	324	return ret;
	325	}
	326
337bbb62 PT	327	static int spl_fit_image_get_os(const void fit, int noffset, uint8_t os)
	328	{
	329	#if CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
	330	return -ENOTSUPP;
	331	#else
	332	return fit_image_get_os(fit, noffset, os);
	333	#endif
	334	}
	335
f4d7d859 SG	336	int spl_load_simple_fit(struct spl_image_info *spl_image,
f4d7d859 SG	337	struct spl_load_info info, ulong sector, void fit)
f1dcee59 SG	338	{
f1dcee59 SG	339	int sectors;
8baa3818	340	ulong size;
f1dcee59	341	unsigned long count;
8baa3818	342	struct spl_image_info image_info;
c8bc3c0c YS	343	int node = -1;
c8bc3c0c YS	344	int images, ret;
eafd5410	345	int base_offset, align_len = ARCH_DMA_MINALIGN - 1;
411cf32d	346	int index = 0;
f1dcee59 SG	347
f1dcee59 SG	348	/*
c8bc3c0c YS	349	* For FIT with external data, figure out where the external images
	350	* start. This is the base for the data-offset properties in each
	351	* image.
f1dcee59 SG	352	*/
	353	size = fdt_totalsize(fit);
	354	size = (size + 3) & ~3;
	355	base_offset = (size + 3) & ~3;
	356
	357	/*
	358	* So far we only have one block of data from the FIT. Read the entire
	359	* thing, including that first block, placing it so it finishes before
	360	* where we will load the image.
	361	*
	362	* Note that we will load the image such that its first byte will be
	363	* at the load address. Since that byte may be part-way through a
	364	* block, we may load the image up to one block before the load
	365	* address. So take account of that here by subtracting an addition
	366	* block length from the FIT start position.
	367	*
	368	* In fact the FIT has its own load address, but we assume it cannot
	369	* be before CONFIG_SYS_TEXT_BASE.
c8bc3c0c YS	370	*
	371	* For FIT with data embedded, data is loaded as part of FIT image.
	372	* For FIT with external data, data is not loaded in this step.
f1dcee59	373	*/
8b528709 LV	374	fit = (void *)((CONFIG_SYS_TEXT_BASE - size - info->bl_len -
8b528709 LV	375	align_len) & ~align_len);
eafd5410	376	sectors = get_aligned_image_size(info, size, 0);
f1dcee59 SG	377	count = info->read(info, sector, sectors, fit);
	378	debug("fit read sector %lx, sectors=%d, dst=%p, count=%lu\n",
	379	sector, sectors, fit, count);
	380	if (count == 0)
	381	return -EIO;
	382
736806fb	383	/* find the node holding the images information */
f1dcee59 SG	384	images = fdt_path_offset(fit, FIT_IMAGES_PATH);
	385	if (images < 0) {
	386	debug("%s: Cannot find /images node: %d\n", __func__, images);
	387	return -1;
	388	}
736806fb	389
d879616e PT	390	/*
	391	* Find the U-Boot image using the following search order:
	392	* - start at 'firmware' (e.g. an ARM Trusted Firmware)
	393	* - fall back 'kernel' (e.g. a Falcon-mode OS boot
	394	* - fall back to using the first 'loadables' entry
	395	*/
	396	if (node < 0)
1f8e4bf5 MS	397	node = spl_fit_get_image_node(fit, images, FIT_FIRMWARE_PROP,
1f8e4bf5 MS	398	0);
c8bc3c0c	399	#ifdef CONFIG_SPL_OS_BOOT
c8bc3c0c	400	if (node < 0)
d879616e	401	node = spl_fit_get_image_node(fit, images, FIT_KERNEL_PROP, 0);
c8bc3c0c	402	#endif
f1dcee59	403	if (node < 0) {
736806fb AP	404	debug("could not find firmware image, trying loadables...\n");
736806fb AP	405	node = spl_fit_get_image_node(fit, images, "loadables", 0);
411cf32d AP	406	/*
	407	* If we pick the U-Boot image from "loadables", start at
	408	* the second image when later loading additional images.
	409	*/
	410	index = 1;
736806fb AP	411	}
	412	if (node < 0) {
	413	debug("%s: Cannot find u-boot image node: %d\n",
	414	__func__, node);
f1dcee59 SG	415	return -1;
	416	}
	417
8baa3818 AP	418	/* Load the image and set up the spl_image structure */
	419	ret = spl_load_fit_image(info, sector, fit, base_offset, node,
	420	spl_image);
	421	if (ret)
	422	return ret;
da74d1f3	423
d879616e PT	424	/*
	425	* For backward compatibility, we treat the first node that is
	426	* as a U-Boot image, if no OS-type has been declared.
	427	*/
337bbb62	428	if (!spl_fit_image_get_os(fit, node, &spl_image->os))
c8bc3c0c	429	debug("Image OS is %s\n", genimg_get_os_name(spl_image->os));
d879616e PT	430	#if !defined(CONFIG_SPL_OS_BOOT)
	431	else
	432	spl_image->os = IH_OS_U_BOOT;
c8bc3c0c	433	#endif
f1dcee59	434
d879616e PT	435	/*
	436	* Booting a next-stage U-Boot may require us to append the FDT.
	437	* We allow this to fail, as the U-Boot image might embed its FDT.
	438	*/
	439	if (spl_image->os == IH_OS_U_BOOT)
	440	spl_fit_append_fdt(spl_image, info, sector, fit,
	441	images, base_offset);
411cf32d AP	442
	443	/* Now check if there are more images for us to load */
	444	for (; ; index++) {
d879616e PT	445	uint8_t os_type = IH_OS_INVALID;
d879616e PT	446
411cf32d AP	447	node = spl_fit_get_image_node(fit, images, "loadables", index);
	448	if (node < 0)
	449	break;
	450
	451	ret = spl_load_fit_image(info, sector, fit, base_offset, node,
	452	&image_info);
	453	if (ret < 0)
	454	continue;
	455
337bbb62	456	if (!spl_fit_image_get_os(fit, node, &os_type))
d879616e PT	457	debug("Loadable is %s\n", genimg_get_os_name(os_type));
d879616e PT	458
a616c783 PT	459	if (os_type == IH_OS_U_BOOT) {
a616c783 PT	460	spl_fit_append_fdt(&image_info, info, sector,
d879616e	461	fit, images, base_offset);
a616c783 PT	462	spl_image->fdt_addr = image_info.fdt_addr;
a616c783 PT	463	}
d879616e	464
411cf32d AP	465	/*
	466	* If the "firmware" image did not provide an entry point,
	467	* use the first valid entry point from the loadables.
	468	*/
	469	if (spl_image->entry_point == FDT_ERROR &&
	470	image_info.entry_point != FDT_ERROR)
	471	spl_image->entry_point = image_info.entry_point;
a616c783 PT	472
	473	/* Record our loadables into the FDT */
	474	if (spl_image->fdt_addr)
	475	spl_fit_record_loadable(fit, images, index,
	476	spl_image->fdt_addr,
	477	&image_info);
411cf32d AP	478	}
	479
	480	/*
	481	* If a platform does not provide CONFIG_SYS_UBOOT_START, U-Boot's
	482	* Makefile will set it to 0 and it will end up as the entry point
	483	* here. What it actually means is: use the load address.
	484	*/
	485	if (spl_image->entry_point == FDT_ERROR \|\| spl_image->entry_point == 0)
	486	spl_image->entry_point = spl_image->load_addr;
	487
	488	return 0;
f1dcee59	489	}