/*
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* (C) Copyright 2014
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* Texas Instruments, <www.ti.com>
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*
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* Dan Murphy <dmurphy@ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* FAT Image Functions copied from spl_mmc.c
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*/
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#include <common.h>
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#include <spl.h>
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#include <asm/u-boot.h>
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#include <fat.h>
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#include <errno.h>
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#include <image.h>
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#include <linux/libfdt.h>
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static int fat_registered;
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static int spl_register_fat_device(struct blk_desc *block_dev, int partition)
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{
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int err = 0;
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if (fat_registered)
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return err;
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err = fat_register_device(block_dev, partition);
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if (err) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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printf("%s: fat register err - %d\n", __func__, err);
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#endif
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return err;
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}
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fat_registered = 1;
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return err;
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}
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static ulong spl_fit_read(struct spl_load_info *load, ulong file_offset,
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ulong size, void *buf)
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{
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loff_t actread;
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int ret;
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char *filename = (char *)load->filename;
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ret = fat_read_file(filename, buf, file_offset, size, &actread);
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if (ret)
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return ret;
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return actread;
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}
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int spl_load_image_fat(struct spl_image_info *spl_image,
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struct blk_desc *block_dev, int partition,
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const char *filename)
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{
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int err;
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struct image_header *header;
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err = spl_register_fat_device(block_dev, partition);
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if (err)
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goto end;
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header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
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sizeof(struct image_header));
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err = file_fat_read(filename, header, sizeof(struct image_header));
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if (err <= 0)
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goto end;
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#ifdef CONFIG_SPL_FIT_IMAGE_MULTIPLE
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if ((IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
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image_get_magic(header) == FDT_MAGIC) ||
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CONFIG_SPL_FIT_IMAGE_MULTIPLE > 1) {
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#else
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if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
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image_get_magic(header) == FDT_MAGIC) {
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#endif
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struct spl_load_info load;
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debug("Found FIT\n");
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load.read = spl_fit_read;
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load.bl_len = 1;
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load.filename = (void *)filename;
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load.priv = NULL;
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return spl_load_simple_fit(spl_image, &load, 0, header);
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} else {
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err = spl_parse_image_header(spl_image, header);
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if (err)
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goto end;
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err = file_fat_read(filename,
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(u8 *)(uintptr_t)spl_image->load_addr, 0);
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}
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end:
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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if (err <= 0)
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printf("%s: error reading image %s, err - %d\n",
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__func__, filename, err);
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#endif
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return (err <= 0);
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}
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#ifdef CONFIG_SPL_OS_BOOT
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int spl_load_image_fat_os(struct spl_image_info *spl_image,
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struct blk_desc *block_dev, int partition)
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{
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int err;
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__maybe_unused char *file;
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err = spl_register_fat_device(block_dev, partition);
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if (err)
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return err;
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#if defined(CONFIG_SPL_ENV_SUPPORT) && defined(CONFIG_SPL_OS_BOOT)
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file = env_get("falcon_args_file");
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if (file) {
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err = file_fat_read(file, (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
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if (err <= 0) {
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printf("spl: error reading image %s, err - %d, falling back to default\n",
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file, err);
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goto defaults;
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}
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file = env_get("falcon_image_file");
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if (file) {
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err = spl_load_image_fat(spl_image, block_dev,
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partition, file);
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if (err != 0) {
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puts("spl: falling back to default\n");
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goto defaults;
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}
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return 0;
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} else
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puts("spl: falcon_image_file not set in environment, falling back to default\n");
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} else
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puts("spl: falcon_args_file not set in environment, falling back to default\n");
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defaults:
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#endif
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err = file_fat_read(CONFIG_SPL_FS_LOAD_ARGS_NAME,
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(void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
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if (err <= 0) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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printf("%s: error reading image %s, err - %d\n",
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__func__, CONFIG_SPL_FS_LOAD_ARGS_NAME, err);
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#endif
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return -1;
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}
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return spl_load_image_fat(spl_image, block_dev, partition,
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CONFIG_SPL_FS_LOAD_KERNEL_NAME);
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}
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#else
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int spl_load_image_fat_os(struct spl_image_info *spl_image,
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struct blk_desc *block_dev, int partition)
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{
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return -ENOSYS;
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}
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#endif
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