spl: Improve error message for SPL memory allocation

[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 <fpga.h>
#include <gzip.h>
#include <image.h>
#include <log.h>
#include <memalign.h>
#include <mapmem.h>
#include <spl.h>
#include <sysinfo.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <linux/libfdt.h>
#include <linux/printk.h>

DECLARE_GLOBAL_DATA_PTR;

struct spl_fit_info {
        const void *fit;        /* Pointer to a valid FIT blob */
        size_t ext_data_offset; /* Offset to FIT external data (end of FIT) */
        int images_node;        /* FDT offset to "/images" node */
        int conf_node;          /* FDT offset to selected configuration node */
};

__weak ulong board_spl_fit_size_align(ulong size)
{
        return size;
}

static int find_node_from_desc(const void *fit, int node, const char *str)
{
        int child;

        if (node < 0)
                return -EINVAL;

        /* iterate the FIT nodes and find a matching description */
        for (child = fdt_first_subnode(fit, node); child >= 0;
             child = fdt_next_subnode(fit, child)) {
                int len;
                const char *desc = fdt_getprop(fit, child, FIT_DESC_PROP, &len);

                if (!desc)
                        continue;

                if (!strcmp(desc, str))
                        return child;
        }

        return -ENOENT;
}

/**
 * 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 struct spl_fit_info *ctx,
                                  const char *type, int index,
                                  const char **outname)
{
        struct udevice *sysinfo;
        const char *name, *str;
        __maybe_unused int node;
        int len, i;
        bool found = true;

        name = fdt_getprop(ctx->fit, ctx->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)) {
                        found = false;
                        break;
                }
        }

        if (!found && CONFIG_IS_ENABLED(SYSINFO) && !sysinfo_get(&sysinfo)) {
                int rc;
                /*
                 * no string in the property for this index. Check if the
                 * sysinfo-level code can supply one.
                 */
                rc = sysinfo_detect(sysinfo);
                if (rc)
                        return rc;

                rc = sysinfo_get_fit_loadable(sysinfo, index - i - 1, type,
                                              &str);
                if (rc && rc != -ENOENT)
                        return rc;

                if (!rc) {
                        /*
                         * The sysinfo provided a name for a loadable.
                         * Try to match it against the description properties
                         * first. If no matching node is found, use it as a
                         * node name.
                         */
                        int node;
                        int images = fdt_path_offset(ctx->fit, FIT_IMAGES_PATH);

                        node = find_node_from_desc(ctx->fit, images, str);
                        if (node > 0)
                                str = fdt_get_name(ctx->fit, node, NULL);

                        found = true;
                }
        }

        if (!found) {
                debug("no string for index %d\n", index);
                return -E2BIG;
        }

        *outname = 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 struct spl_fit_info *ctx,
                                  const char *type, int index)
{
        const char *str;
        int err;
        int node;

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

        debug("%s: '%s'\n", type, str);

        node = fdt_subnode_offset(ctx->fit, ctx->images_node, str);
        if (node < 0) {
                pr_err("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)
{
        return ALIGN_DOWN(offset, spl_get_bl_len(info));
}

static int get_aligned_image_overhead(struct spl_load_info *info, int offset)
{
        return offset & (spl_get_bl_len(info) - 1);
}

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);

        return ALIGN(data_size, spl_get_bl_len(info));
}

/**
 * load_simple_fit(): 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
 * @ctx:        points to the FIT context structure
 * @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, if load_addr is not 0
 *
 * Return:      0 on success or a negative error number.
 */
static int load_simple_fit(struct spl_load_info *info, ulong fit_offset,
                           const struct spl_fit_info *ctx, int node,
                           struct spl_image_info *image_info)
{
        int offset;
        size_t length;
        int len;
        ulong size;
        ulong load_addr;
        void *load_ptr;
        void *src;
        ulong overhead;
        uint8_t image_comp = -1, type = -1;
        const void *data;
        const void *fit = ctx->fit;
        bool external_data = false;

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

        if (spl_decompression_enabled()) {
                fit_image_get_comp(fit, node, &image_comp);
                debug("%s ", genimg_get_comp_name(image_comp));
        }

        if (fit_image_get_load(fit, node, &load_addr)) {
                if (!image_info->load_addr) {
                        printf("Can't load %s: No load address and no buffer\n",
                               fit_get_name(fit, node, NULL));
                        return -ENOBUFS;
                }
                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 += ctx->ext_data_offset;
                external_data = true;
        }

        if (external_data) {
                void *src_ptr;

                /* External data */
                if (fit_image_get_data_size(fit, node, &len))
                        return -ENOENT;

                /* Dont bother to copy 0 byte data, but warn, though */
                if (!len) {
                        log_warning("%s: Skip load '%s': image size is 0!\n",
                                    __func__, fit_get_name(fit, node, NULL));
                        return 0;
                }

                if (spl_decompression_enabled() &&
                    (image_comp == IH_COMP_GZIP || image_comp == IH_COMP_LZMA))
                        src_ptr = map_sysmem(ALIGN(CONFIG_SYS_LOAD_ADDR, ARCH_DMA_MINALIGN), len);
                else
                        src_ptr = map_sysmem(ALIGN(load_addr, ARCH_DMA_MINALIGN), len);
                length = len;

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

                if (info->read(info,
                               fit_offset +
                               get_aligned_image_offset(info, offset), size,
                               src_ptr) < length)
                        return -EIO;

                debug("External data: dst=%p, offset=%x, size=%lx\n",
                      src_ptr, offset, (unsigned long)length);
                src = src_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;     /* cast away const */
        }

        if (CONFIG_IS_ENABLED(FIT_SIGNATURE)) {
                printf("## Checking hash(es) for Image %s ... ",
                       fit_get_name(fit, node, NULL));
                if (!fit_image_verify_with_data(fit, node, gd_fdt_blob(), src,
                                                length))
                        return -EPERM;
                puts("OK\n");
        }

        if (CONFIG_IS_ENABLED(FIT_IMAGE_POST_PROCESS))
                board_fit_image_post_process(fit, node, &src, &length);

        load_ptr = map_sysmem(load_addr, length);
        if (IS_ENABLED(CONFIG_SPL_GZIP) && image_comp == IH_COMP_GZIP) {
                size = length;
                if (gunzip(load_ptr, CONFIG_SYS_BOOTM_LEN, src, &size)) {
                        puts("Uncompressing error\n");
                        return -EIO;
                }
                length = size;
        } else if (IS_ENABLED(CONFIG_SPL_LZMA) && image_comp == IH_COMP_LZMA) {
                size = CONFIG_SYS_BOOTM_LEN;
                ulong loadEnd;

                if (image_decomp(IH_COMP_LZMA, CONFIG_SYS_LOAD_ADDR, 0, 0,
                                 load_ptr, src, length, size, &loadEnd)) {
                        puts("Uncompressing error\n");
                        return -EIO;
                }
                length = loadEnd - CONFIG_SYS_LOAD_ADDR;
        } else {
                memcpy(load_ptr, src, length);
        }

        if (image_info) {
                ulong entry_point;

                image_info->load_addr = load_addr;
                image_info->size = length;

                if (!fit_image_get_entry(fit, node, &entry_point))
                        image_info->entry_point = entry_point;
                else
                        image_info->entry_point = FDT_ERROR;
        }

        return 0;
}

static bool os_takes_devicetree(uint8_t os)
{
        switch (os) {
        case IH_OS_U_BOOT:
                return true;
        case IH_OS_LINUX:
                return IS_ENABLED(CONFIG_SPL_OS_BOOT) ||
                       IS_ENABLED(CONFIG_SPL_OPENSBI);
        default:
                return false;
        }
}

__weak int board_spl_fit_append_fdt_skip(const char *name)
{
        return 0;       /* Do not skip */
}

static int spl_fit_append_fdt(struct spl_image_info *spl_image,
                              struct spl_load_info *info, ulong offset,
                              const struct spl_fit_info *ctx)
{
        struct spl_image_info image_info;
        int node, ret = 0, index = 0;

        /*
         * Use the address following the image as target address for the
         * device tree.
         */
        image_info.load_addr = spl_image->load_addr + spl_image->size;

        /* Figure out which device tree the board wants to use */
        node = spl_fit_get_image_node(ctx, FIT_FDT_PROP, index++);
        if (node < 0) {
                size_t size;

                debug("%s: cannot find FDT node\n", __func__);

                /*
                 * U-Boot did not find a device tree inside the FIT image. Use
                 * the U-Boot device tree instead.
                 */
                if (!gd->fdt_blob)
                        return node;

                /*
                 * Make the load-address of the FDT available for the SPL
                 * framework
                 */
                size = fdt_totalsize(gd->fdt_blob);
                spl_image->fdt_addr = map_sysmem(image_info.load_addr, size);
                memcpy(spl_image->fdt_addr, gd->fdt_blob, size);
        } else {
                ret = load_simple_fit(info, offset, ctx, node, &image_info);
                if (ret < 0)
                        return ret;

                spl_image->fdt_addr = phys_to_virt(image_info.load_addr);
        }

        if (CONFIG_IS_ENABLED(FIT_IMAGE_TINY))
                return 0;

#if CONFIG_IS_ENABLED(LOAD_FIT_APPLY_OVERLAY)
                void *tmpbuffer = NULL;

                for (; ; index++) {
                        const char *str;

                        ret = spl_fit_get_image_name(ctx, FIT_FDT_PROP, index, &str);
                        if (ret == -E2BIG) {
                                debug("%s: No additional FDT node\n", __func__);
                                ret = 0;
                                break;
                        } else if (ret < 0) {
                                continue;
                        }

                        ret = board_spl_fit_append_fdt_skip(str);
                        if (ret)
                                continue;

                        node = fdt_subnode_offset(ctx->fit, ctx->images_node, str);
                        if (node < 0) {
                                debug("%s: unable to find FDT node %d\n",
                                      __func__, index);
                                continue;
                        }

                        if (!tmpbuffer) {
                                /*
                                 * allocate memory to store the DT overlay
                                 * before it is applied. It may not be used
                                 * depending on how the overlay is stored, so
                                 * don't fail yet if the allocation failed.
                                 */
                                size_t size = CONFIG_SPL_LOAD_FIT_APPLY_OVERLAY_BUF_SZ;

                                tmpbuffer = malloc_cache_aligned(size);
                                if (!tmpbuffer)
                                        debug("%s: unable to allocate space for overlays\n",
                                              __func__);
                        }
                        image_info.load_addr = (ulong)tmpbuffer;
                        ret = load_simple_fit(info, offset, ctx, node,
                                              &image_info);
                        if (ret < 0)
                                break;

                        /* Make room in FDT for changes from the overlay */
                        ret = fdt_increase_size(spl_image->fdt_addr,
                                                image_info.size);
                        if (ret < 0)
                                break;

                        ret = fdt_overlay_apply_verbose(spl_image->fdt_addr,
                                                        (void *)image_info.load_addr);
                        if (ret) {
                                pr_err("failed to apply DT overlay %s\n",
                                       fit_get_name(ctx->fit, node, NULL));
                                break;
                        }

                        debug("%s: DT overlay %s applied\n", __func__,
                              fit_get_name(ctx->fit, node, NULL));
                }
                free(tmpbuffer);
                if (ret)
                        return ret;
#endif
        /* Try to make space, so we can inject details on the loadables */
        ret = fdt_shrink_to_minimum(spl_image->fdt_addr, 8192);
        if (ret < 0)
                return ret;

        return ret;
}

static int spl_fit_record_loadable(const struct spl_fit_info *ctx, int index,
                                   void *blob, struct spl_image_info *image)
{
        int ret = 0;
        const char *name;
        int node;

        if (CONFIG_IS_ENABLED(FIT_IMAGE_TINY))
                return 0;

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

        node = spl_fit_get_image_node(ctx, "loadables", index);

        ret = fdt_record_loadable(blob, index, name, image->load_addr,
                        image->size, image->entry_point,
                        fdt_getprop(ctx->fit, node, FIT_TYPE_PROP, NULL),
                        fdt_getprop(ctx->fit, node, FIT_OS_PROP, NULL),
                        fdt_getprop(ctx->fit, node, FIT_ARCH_PROP, NULL));

        return ret;
}

static int spl_fit_image_is_fpga(const void *fit, int node)
{
        const char *type;

        if (!IS_ENABLED(CONFIG_SPL_FPGA))
                return 0;

        type = fdt_getprop(fit, node, FIT_TYPE_PROP, NULL);
        if (!type)
                return 0;

        return !strcmp(type, "fpga");
}

static int spl_fit_image_get_os(const void *fit, int noffset, uint8_t *os)
{
        if (!CONFIG_IS_ENABLED(FIT_IMAGE_TINY) || CONFIG_IS_ENABLED(OS_BOOT))
                return fit_image_get_os(fit, noffset, os);

        const char *name = fdt_getprop(fit, noffset, FIT_OS_PROP, NULL);
        if (!name)
                return -ENOENT;

        /*
         * We don't care what the type of the image actually is,
         * only whether or not it is U-Boot. This saves some
         * space by omitting the large table of OS types.
         */
        if (!strcmp(name, "u-boot"))
                *os = IH_OS_U_BOOT;
        else
                *os = IH_OS_INVALID;

        return 0;
}

/*
 * The purpose of the FIT load buffer is to provide a memory location that is
 * independent of the load address of any FIT component.
 */
static void *spl_get_fit_load_buffer(size_t size)
{
        void *buf;

        buf = malloc_cache_aligned(size);
        if (!buf) {
                pr_err("Could not get FIT buffer of %lu bytes\n", (ulong)size);

                if (IS_ENABLED(CONFIG_SPL_SYS_MALLOC))
                        pr_err("\tcheck CONFIG_SPL_SYS_MALLOC_SIZE\n");
                else
                        pr_err("\tcheck CONFIG_SPL_SYS_MALLOC_F_LEN\n");

                buf = spl_get_load_buffer(0, size);
        }
        return buf;
}

__weak void *board_spl_fit_buffer_addr(ulong fit_size, int sectors, int bl_len)
{
        return spl_get_fit_load_buffer(sectors * bl_len);
}

/*
 * Weak default function to allow customizing SPL fit loading for load-only
 * use cases by allowing to skip the parsing/processing of the FIT contents
 * (so that this can be done separately in a more customized fashion)
 */
__weak bool spl_load_simple_fit_skip_processing(void)
{
        return false;
}

/*
 * Weak default function to allow fixes after fit header
 * is loaded.
 */
__weak void *spl_load_simple_fit_fix_load(const void *fit)
{
        return (void *)fit;
}

static void warn_deprecated(const char *msg)
{
        printf("DEPRECATED: %s\n", msg);
        printf("\tSee doc/uImage.FIT/source_file_format.txt\n");
}

static int spl_fit_upload_fpga(struct spl_fit_info *ctx, int node,
                               struct spl_image_info *fpga_image)
{
        const char *compatible;
        int ret;
        int devnum = 0;
        int flags = 0;

        debug("FPGA bitstream at: %x, size: %x\n",
              (u32)fpga_image->load_addr, fpga_image->size);

        compatible = fdt_getprop(ctx->fit, node, "compatible", NULL);
        if (!compatible) {
                warn_deprecated("'fpga' image without 'compatible' property");
        } else {
                if (CONFIG_IS_ENABLED(FPGA_LOAD_SECURE))
                        flags = fpga_compatible2flag(devnum, compatible);
                if (strcmp(compatible, "u-boot,fpga-legacy"))
                        debug("Ignoring compatible = %s property\n",
                              compatible);
        }

        ret = fpga_load(devnum, (void *)fpga_image->load_addr,
                        fpga_image->size, BIT_FULL, flags);
        if (ret) {
                printf("%s: Cannot load the image to the FPGA\n", __func__);
                return ret;
        }

        puts("FPGA image loaded from FIT\n");

        return 0;
}

static int spl_fit_load_fpga(struct spl_fit_info *ctx,
                             struct spl_load_info *info, ulong offset)
{
        int node, ret;

        struct spl_image_info fpga_image = {
                .load_addr = 0,
        };

        node = spl_fit_get_image_node(ctx, "fpga", 0);
        if (node < 0)
                return node;

        warn_deprecated("'fpga' property in config node. Use 'loadables'");

        /* Load the image and set up the fpga_image structure */
        ret = load_simple_fit(info, offset, ctx, node, &fpga_image);
        if (ret) {
                printf("%s: Cannot load the FPGA: %i\n", __func__, ret);
                return ret;
        }

        return spl_fit_upload_fpga(ctx, node, &fpga_image);
}

static int spl_simple_fit_read(struct spl_fit_info *ctx,
                               struct spl_load_info *info, ulong offset,
                               const void *fit_header)
{
        unsigned long count, size;
        void *buf;

        /*
         * 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 = ALIGN(fdt_totalsize(fit_header), 4);
        size = board_spl_fit_size_align(size);
        ctx->ext_data_offset = ALIGN(size, 4);

        /*
         * So far we only have one block of data from the FIT. Read the entire
         * thing, including that first block.
         *
         * 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.
         */
        size = get_aligned_image_size(info, size, 0);
        buf = board_spl_fit_buffer_addr(size, size, 1);

        count = info->read(info, offset, size, buf);
        ctx->fit = buf;
        debug("fit read offset %lx, size=%lu, dst=%p, count=%lu\n",
              offset, size, buf, count);

        return (count == 0) ? -EIO : 0;
}

static int spl_simple_fit_parse(struct spl_fit_info *ctx)
{
        /* Find the correct subnode under "/configurations" */
        ctx->conf_node = fit_find_config_node(ctx->fit);
        if (ctx->conf_node < 0)
                return -EINVAL;

        if (IS_ENABLED(CONFIG_SPL_FIT_SIGNATURE)) {
                printf("## Checking hash(es) for config %s ... ",
                       fit_get_name(ctx->fit, ctx->conf_node, NULL));
                if (fit_config_verify(ctx->fit, ctx->conf_node))
                        return -EPERM;
                puts("OK\n");
        }

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

        return 0;
}

int spl_load_simple_fit(struct spl_image_info *spl_image,
                        struct spl_load_info *info, ulong offset, void *fit)
{
        struct spl_image_info image_info;
        struct spl_fit_info ctx;
        int node = -1;
        int ret;
        int index = 0;
        int firmware_node;

        ret = spl_simple_fit_read(&ctx, info, offset, fit);
        if (ret < 0)
                return ret;

        /* skip further processing if requested to enable load-only use cases */
        if (spl_load_simple_fit_skip_processing())
                return 0;

        ctx.fit = spl_load_simple_fit_fix_load(ctx.fit);

        ret = spl_simple_fit_parse(&ctx);
        if (ret < 0)
                return ret;

        if (IS_ENABLED(CONFIG_SPL_FPGA))
                spl_fit_load_fpga(&ctx, info, offset);

        /*
         * 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(&ctx, FIT_FIRMWARE_PROP, 0);

        if (node < 0 && IS_ENABLED(CONFIG_SPL_OS_BOOT))
                node = spl_fit_get_image_node(&ctx, FIT_KERNEL_PROP, 0);

        if (node < 0) {
                debug("could not find firmware image, trying loadables...\n");
                node = spl_fit_get_image_node(&ctx, "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 = load_simple_fit(info, offset, &ctx, 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(ctx.fit, node, &spl_image->os))
                debug("Image OS is %s\n", genimg_get_os_name(spl_image->os));
        else if (!IS_ENABLED(CONFIG_SPL_OS_BOOT))
                spl_image->os = IH_OS_U_BOOT;

        /*
         * 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 (os_takes_devicetree(spl_image->os)) {
                ret = spl_fit_append_fdt(spl_image, info, offset, &ctx);
                if (ret < 0 && spl_image->os != IH_OS_U_BOOT)
                        return ret;
        }

        firmware_node = node;
        /* 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(&ctx, "loadables", index);
                if (node < 0)
                        break;

                /*
                 * if the firmware is also a loadable, skip it because
                 * it already has been loaded. This is typically the case with
                 * u-boot.img generated by mkimage.
                 */
                if (firmware_node == node)
                        continue;

                image_info.load_addr = 0;
                ret = load_simple_fit(info, offset, &ctx, node, &image_info);
                if (ret < 0) {
                        printf("%s: can't load image loadables index %d (ret = %d)\n",
                               __func__, index, ret);
                        return ret;
                }

                if (spl_fit_image_is_fpga(ctx.fit, node))
                        spl_fit_upload_fpga(&ctx, node, &image_info);

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

                if (os_takes_devicetree(os_type)) {
                        spl_fit_append_fdt(&image_info, info, offset, &ctx);
                        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(&ctx, 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;

        spl_image->flags |= SPL_FIT_FOUND;

        return 0;
}

/* Parse and load full fitImage in SPL */
int spl_load_fit_image(struct spl_image_info *spl_image,
                       const struct legacy_img_hdr *header)
{
        struct bootm_headers images;
        const char *fit_uname_config = NULL;
        uintptr_t fdt_hack;
        const char *uname;
        ulong fw_data = 0, dt_data = 0, img_data = 0;
        ulong fw_len = 0, dt_len = 0, img_len = 0;
        int idx, conf_noffset;
        int ret;

#ifdef CONFIG_SPL_FIT_SIGNATURE
        images.verify = 1;
#endif
        ret = fit_image_load(&images, virt_to_phys((void *)header),
                             NULL, &fit_uname_config,
                             IH_ARCH_DEFAULT, IH_TYPE_STANDALONE, -1,
                             FIT_LOAD_OPTIONAL, &fw_data, &fw_len);
        if (ret >= 0) {
                printf("DEPRECATED: 'standalone = ' property.");
                printf("Please use either 'firmware =' or 'kernel ='\n");
        } else {
                ret = fit_image_load(&images, virt_to_phys((void *)header),
                                     NULL, &fit_uname_config, IH_ARCH_DEFAULT,
                                     IH_TYPE_FIRMWARE, -1, FIT_LOAD_OPTIONAL,
                                     &fw_data, &fw_len);
        }

        if (ret < 0) {
                ret = fit_image_load(&images, virt_to_phys((void *)header),
                                     NULL, &fit_uname_config, IH_ARCH_DEFAULT,
                                     IH_TYPE_KERNEL, -1, FIT_LOAD_OPTIONAL,
                                     &fw_data, &fw_len);
        }

        if (ret < 0)
                return ret;

        spl_image->size = fw_len;
        spl_image->load_addr = fw_data;
        if (fit_image_get_entry(header, ret, &spl_image->entry_point))
                spl_image->entry_point = fw_data;
        if (fit_image_get_os(header, ret, &spl_image->os))
                spl_image->os = IH_OS_INVALID;
        spl_image->name = genimg_get_os_name(spl_image->os);

        debug(SPL_TPL_PROMPT "payload image: %32s load addr: 0x%lx size: %d\n",
              spl_image->name, spl_image->load_addr, spl_image->size);

#ifdef CONFIG_SPL_FIT_SIGNATURE
        images.verify = 1;
#endif
        ret = fit_image_load(&images, virt_to_phys((void *)header), NULL,
                             &fit_uname_config, IH_ARCH_DEFAULT, IH_TYPE_FLATDT,
                             -1, FIT_LOAD_OPTIONAL, &dt_data, &dt_len);
        if (ret >= 0) {
                spl_image->fdt_addr = (void *)dt_data;

                if (spl_image->os == IH_OS_U_BOOT) {
                        /* HACK: U-Boot expects FDT at a specific address */
                        fdt_hack = spl_image->load_addr + spl_image->size;
                        fdt_hack = (fdt_hack + 3) & ~3;
                        debug("Relocating FDT to %p\n", spl_image->fdt_addr);
                        memcpy((void *)fdt_hack, spl_image->fdt_addr, dt_len);
                }
        }

        conf_noffset = fit_conf_get_node((const void *)header,
                                         fit_uname_config);
        if (conf_noffset < 0)
                return 0;

        for (idx = 0;
             uname = fdt_stringlist_get((const void *)header, conf_noffset,
                                        FIT_LOADABLE_PROP, idx,
                                NULL), uname;
             idx++) {
#ifdef CONFIG_SPL_FIT_SIGNATURE
                images.verify = 1;
#endif
                ret = fit_image_load(&images, (ulong)header,
                                     &uname, &fit_uname_config,
                                     IH_ARCH_DEFAULT, IH_TYPE_LOADABLE, -1,
                                     FIT_LOAD_OPTIONAL_NON_ZERO,
                                     &img_data, &img_len);
                if (ret < 0)
                        return ret;
        }

        return 0;
}