common/spl/spl_fit.c - filogic/uboot - Gitiles

 /*
  * 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>

 static ulong fdt_getprop_u32(const void *fdt, int node, const char *prop)
 {
 	const u32 *cell;
 	int len;

 	cell = fdt_getprop(fdt, node, prop, &len);
 	if (len != sizeof(*cell))
 		return -1U;
 	return fdt32_to_cpu(*cell);
 }

 static int spl_fit_select_fdt(const void *fdt, int images, int *fdt_offsetp)
 {
 	const char *name, *fdt_name;
 	int conf, node, fdt_node;
 	int len;

 	*fdt_offsetp = 0;
 	conf = fdt_path_offset(fdt, FIT_CONFS_PATH);
 	if (conf < 0) {
 		debug("%s: Cannot find /configurations node: %d\n", __func__,
 		      conf);
 		return -EINVAL;
 	}
 	for (node = fdt_first_subnode(fdt, conf);
 	     node >= 0;
 	     node = fdt_next_subnode(fdt, node)) {
 		name = fdt_getprop(fdt, node, "description", &len);
 		if (!name) {
 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 			printf("%s: Missing FDT description in DTB\n",
 			       __func__);
 #endif
 			return -EINVAL;
 		}
 		if (board_fit_config_name_match(name))
 			continue;

 		debug("Selecting config '%s'", name);
 		fdt_name = fdt_getprop(fdt, node, FIT_FDT_PROP, &len);
 		if (!fdt_name) {
 			debug("%s: Cannot find fdt name property: %d\n",
 			      __func__, len);
 			return -EINVAL;
 		}

 		debug(", fdt '%s'\n", fdt_name);
 		fdt_node = fdt_subnode_offset(fdt, images, fdt_name);
 		if (fdt_node < 0) {
 			debug("%s: Cannot find fdt node '%s': %d\n",
 			      __func__, fdt_name, fdt_node);
 			return -EINVAL;
 		}

 		*fdt_offsetp = fdt_getprop_u32(fdt, fdt_node, "data-offset");
 		len = fdt_getprop_u32(fdt, fdt_node, "data-size");
 		debug("FIT: Selected '%s'\n", name);

 		return len;
 	}

 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
 	printf("No matching DT out of these options:\n");
 	for (node = fdt_first_subnode(fdt, conf);
 	     node >= 0;
 	     node = fdt_next_subnode(fdt, node)) {
 		name = fdt_getprop(fdt, node, "name", &len);
 		printf("   %s\n", name);
 	}
 #endif

 	return -ENOENT;
 }

 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)
 {
 	if (info->filename)
 		return data_size + get_aligned_image_overhead(info, offset);

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

 int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fit)
 {
 	int sectors;
 	ulong size, load;
 	unsigned long count;
 	int node, images;
 	void *load_ptr;
 	int fdt_offset, fdt_len;
 	int data_offset, data_size;
 	int base_offset, align_len = ARCH_DMA_MINALIGN - 1;
 	int src_sector;
 	void *dst;

 	/*
 	 * 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.
 	 */
 	fit = (void *)(CONFIG_SYS_TEXT_BASE - size - info->bl_len);
 	fit = (void *)ALIGN((ulong)fit, 8);
 	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 firmware image to load */
 	images = fdt_path_offset(fit, FIT_IMAGES_PATH);
 	if (images < 0) {
 		debug("%s: Cannot find /images node: %d\n", __func__, images);
 		return -1;
 	}
 	node = fdt_first_subnode(fit, images);
 	if (node < 0) {
 		debug("%s: Cannot find first image node: %d\n", __func__, node);
 		return -1;
 	}

 	/* Get its information and set up the spl_image structure */
 	data_offset = fdt_getprop_u32(fit, node, "data-offset");
 	data_size = fdt_getprop_u32(fit, node, "data-size");
 	load = fdt_getprop_u32(fit, node, "load");
 	debug("data_offset=%x, data_size=%x\n", data_offset, data_size);
 	spl_image.load_addr = load;
 	spl_image.entry_point = load;
 	spl_image.os = IH_OS_U_BOOT;

 	/*
 	 * Work out where to place the image. We read it so that the first
 	 * byte will be at 'load'. This may mean we need to load it starting
 	 * before then, since we can only read whole blocks.
 	 */
 	data_offset += base_offset;
 	sectors = get_aligned_image_size(info, data_size, data_offset);
 	load_ptr = (void *)load;
 	debug("U-Boot size %x, data %p\n", data_size, load_ptr);
 	dst = load_ptr;

 	/* Read the image */
 	src_sector = sector + get_aligned_image_offset(info, data_offset);
 	debug("Aligned image read: dst=%p, src_sector=%x, sectors=%x\n",
 	      dst, src_sector, sectors);
 	count = info->read(info, src_sector, sectors, dst);
 	if (count != sectors)
 		return -EIO;
 	debug("image: dst=%p, data_offset=%x, size=%x\n", dst, data_offset,
 	      data_size);
 	memcpy(dst, dst + get_aligned_image_overhead(info, data_offset),
 	       data_size);

 	/* Figure out which device tree the board wants to use */
 	fdt_len = spl_fit_select_fdt(fit, images, &fdt_offset);
 	if (fdt_len < 0)
 		return fdt_len;

 	/*
 	 * Read the device tree and place it after the image. There may be
 	 * some extra data before it since we can only read entire blocks.
 	 * And also align the destination address to ARCH_DMA_MINALIGN.
 	 */
 	dst = (void *)((load + data_size + align_len) & ~align_len);
 	fdt_offset += base_offset;
 	sectors = get_aligned_image_size(info, fdt_len, fdt_offset);
 	src_sector = sector + get_aligned_image_offset(info, fdt_offset);
 	count = info->read(info, src_sector, sectors, dst);
 	debug("Aligned fdt read: dst %p, src_sector = %x, sectors %x\n",
 	      dst, src_sector, sectors);
 	if (count != sectors)
 		return -EIO;

 	/*
 	 * Copy the device tree so that it starts immediately after the image.
 	 * After this we will have the U-Boot image and its device tree ready
 	 * for us to start.
 	 */
 	debug("fdt: dst=%p, data_offset=%x, size=%x\n", dst, fdt_offset,
 	      fdt_len);
 	memcpy(load_ptr + data_size,
 	       dst + get_aligned_image_overhead(info, fdt_offset), fdt_len);

 	return 0;
 }
	/*
	* 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>

	static ulong fdt_getprop_u32(const void fdt, int node, const char prop)
	{
	const u32 *cell;
	int len;

	cell = fdt_getprop(fdt, node, prop, &len);
	if (len != sizeof(*cell))
	return -1U;
	return fdt32_to_cpu(*cell);
	}

	static int spl_fit_select_fdt(const void fdt, int images, int fdt_offsetp)
	{
	const char name, fdt_name;
	int conf, node, fdt_node;
	int len;

	*fdt_offsetp = 0;
	conf = fdt_path_offset(fdt, FIT_CONFS_PATH);
	if (conf < 0) {
	debug("%s: Cannot find /configurations node: %d\n", __func__,
	conf);
	return -EINVAL;
	}
	for (node = fdt_first_subnode(fdt, conf);
	node >= 0;
	node = fdt_next_subnode(fdt, node)) {
	name = fdt_getprop(fdt, node, "description", &len);
	if (!name) {
	#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
	printf("%s: Missing FDT description in DTB\n",
	__func__);
	#endif
	return -EINVAL;
	}
	if (board_fit_config_name_match(name))
	continue;

	debug("Selecting config '%s'", name);
	fdt_name = fdt_getprop(fdt, node, FIT_FDT_PROP, &len);
	if (!fdt_name) {
	debug("%s: Cannot find fdt name property: %d\n",
	__func__, len);
	return -EINVAL;
	}

	debug(", fdt '%s'\n", fdt_name);
	fdt_node = fdt_subnode_offset(fdt, images, fdt_name);
	if (fdt_node < 0) {
	debug("%s: Cannot find fdt node '%s': %d\n",
	__func__, fdt_name, fdt_node);
	return -EINVAL;
	}

	*fdt_offsetp = fdt_getprop_u32(fdt, fdt_node, "data-offset");
	len = fdt_getprop_u32(fdt, fdt_node, "data-size");
	debug("FIT: Selected '%s'\n", name);

	return len;
	}

	#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
	printf("No matching DT out of these options:\n");
	for (node = fdt_first_subnode(fdt, conf);
	node >= 0;
	node = fdt_next_subnode(fdt, node)) {
	name = fdt_getprop(fdt, node, "name", &len);
	printf(" %s\n", name);
	}
	#endif

	return -ENOENT;
	}

	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)
	{
	if (info->filename)
	return data_size + get_aligned_image_overhead(info, offset);

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

	int spl_load_simple_fit(struct spl_load_info info, ulong sector, void fit)
	{
	int sectors;
	ulong size, load;
	unsigned long count;
	int node, images;
	void *load_ptr;
	int fdt_offset, fdt_len;
	int data_offset, data_size;
	int base_offset, align_len = ARCH_DMA_MINALIGN - 1;
	int src_sector;
	void *dst;

	/*
	* 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.
	*/
	fit = (void *)(CONFIG_SYS_TEXT_BASE - size - info->bl_len);
	fit = (void *)ALIGN((ulong)fit, 8);
	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 firmware image to load */
	images = fdt_path_offset(fit, FIT_IMAGES_PATH);
	if (images < 0) {
	debug("%s: Cannot find /images node: %d\n", __func__, images);
	return -1;
	}
	node = fdt_first_subnode(fit, images);
	if (node < 0) {
	debug("%s: Cannot find first image node: %d\n", __func__, node);
	return -1;
	}

	/* Get its information and set up the spl_image structure */
	data_offset = fdt_getprop_u32(fit, node, "data-offset");
	data_size = fdt_getprop_u32(fit, node, "data-size");
	load = fdt_getprop_u32(fit, node, "load");
	debug("data_offset=%x, data_size=%x\n", data_offset, data_size);
	spl_image.load_addr = load;
	spl_image.entry_point = load;
	spl_image.os = IH_OS_U_BOOT;

	/*
	* Work out where to place the image. We read it so that the first
	* byte will be at 'load'. This may mean we need to load it starting
	* before then, since we can only read whole blocks.
	*/
	data_offset += base_offset;
	sectors = get_aligned_image_size(info, data_size, data_offset);
	load_ptr = (void *)load;
	debug("U-Boot size %x, data %p\n", data_size, load_ptr);
	dst = load_ptr;

	/* Read the image */
	src_sector = sector + get_aligned_image_offset(info, data_offset);
	debug("Aligned image read: dst=%p, src_sector=%x, sectors=%x\n",
	dst, src_sector, sectors);
	count = info->read(info, src_sector, sectors, dst);
	if (count != sectors)
	return -EIO;
	debug("image: dst=%p, data_offset=%x, size=%x\n", dst, data_offset,
	data_size);
	memcpy(dst, dst + get_aligned_image_overhead(info, data_offset),
	data_size);

	/* Figure out which device tree the board wants to use */
	fdt_len = spl_fit_select_fdt(fit, images, &fdt_offset);
	if (fdt_len < 0)
	return fdt_len;

	/*
	* Read the device tree and place it after the image. There may be
	* some extra data before it since we can only read entire blocks.
	* And also align the destination address to ARCH_DMA_MINALIGN.
	*/
	dst = (void *)((load + data_size + align_len) & ~align_len);
	fdt_offset += base_offset;
	sectors = get_aligned_image_size(info, fdt_len, fdt_offset);
	src_sector = sector + get_aligned_image_offset(info, fdt_offset);
	count = info->read(info, src_sector, sectors, dst);
	debug("Aligned fdt read: dst %p, src_sector = %x, sectors %x\n",
	dst, src_sector, sectors);
	if (count != sectors)
	return -EIO;

	/*
	* Copy the device tree so that it starts immediately after the image.
	* After this we will have the U-Boot image and its device tree ready
	* for us to start.
	*/
	debug("fdt: dst=%p, data_offset=%x, size=%x\n", dst, fdt_offset,
	fdt_len);
	memcpy(load_ptr + data_size,
	dst + get_aligned_image_overhead(info, fdt_offset), fdt_len);

	return 0;
	}