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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 | // SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2014 * Texas Instruments, <www.ti.com> * * Dan Murphy <dmurphy@ti.com> * * FAT Image Functions copied from spl_mmc.c */ #include <env.h> #include <log.h> #include <spl.h> #include <spl_load.h> #include <fat.h> #include <errno.h> #include <image.h> #include <linux/libfdt.h> #include <asm/cache.h> static int fat_registered; void spl_fat_force_reregister(void) { fat_registered = 0; } static int spl_register_fat_device(struct blk_desc *block_dev, int partition) { int err = 0; if (fat_registered) return err; err = fat_register_device(block_dev, partition); if (err) { printf("%s: fat register err - %d\n", __func__, err); return err; } fat_registered = 1; return err; } static ulong spl_fit_read(struct spl_load_info *load, ulong file_offset, ulong size, void *buf) { struct legacy_img_hdr *header; loff_t actread; int ret; char *filename = load->priv; ret = fat_read_file(filename, buf, file_offset, size, &actread); if (ret) return ret; if (CONFIG_IS_ENABLED(OS_BOOT)) { header = (struct legacy_img_hdr *)buf; if (image_get_magic(header) != FDT_MAGIC) return size; } return actread; } int spl_load_image_fat(struct spl_image_info *spl_image, struct spl_boot_device *bootdev, struct blk_desc *block_dev, int partition, const char *filename) { int err; loff_t size; struct spl_load_info load; err = spl_register_fat_device(block_dev, partition); if (err) goto end; /* * Avoid pulling in this function for other image types since we are * very short on space on some boards. */ if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL)) { err = fat_size(filename, &size); if (err) goto end; } else { size = 0; } spl_load_init(&load, spl_fit_read, (void *)filename, IS_ENABLED(CONFIG_SPL_FS_FAT_DMA_ALIGN) ? ARCH_DMA_MINALIGN : 1); err = spl_load(spl_image, bootdev, &load, size, 0); end: if (err < 0) printf("%s: error reading image %s, err - %d\n", __func__, filename, err); return err; } #if CONFIG_IS_ENABLED(OS_BOOT) int spl_load_image_fat_os(struct spl_image_info *spl_image, struct spl_boot_device *bootdev, struct blk_desc *block_dev, int partition) { int err; __maybe_unused char *file; err = spl_register_fat_device(block_dev, partition); if (err) return err; if (!CONFIG_IS_ENABLED(ENV_SUPPORT)) goto defaults; file = env_get("falcon_image_file"); if (file) { err = spl_load_image_fat(spl_image, bootdev, block_dev, partition, file); if (err != 0) { puts("spl: falling back to default\n"); goto defaults; } #if IS_ENABLED(CONFIG_SPL_OS_BOOT_ARGS) file = env_get("falcon_args_file"); if (file) { err = file_fat_read( file, (void *)CONFIG_SPL_PAYLOAD_ARGS_ADDR, 0); if (err <= 0) { printf("spl: error reading args %s, err - %d, falling back to default\n", file, err); goto defaults; } return 0; } else puts("spl: falcon_args_file not set in environment, falling back to default\n"); #endif } else puts("spl: falcon_image_file not set in environment, falling back to default\n"); defaults: err = spl_load_image_fat(spl_image, bootdev, block_dev, partition, CONFIG_SPL_FS_LOAD_KERNEL_NAME); if (err) return err; #if IS_ENABLED(CONFIG_SPL_OS_BOOT_ARGS) err = file_fat_read(CONFIG_SPL_FS_LOAD_ARGS_NAME, (void *)CONFIG_SPL_PAYLOAD_ARGS_ADDR, 0); if (err <= 0) { printf("%s: error reading image %s, err - %d\n", __func__, CONFIG_SPL_FS_LOAD_ARGS_NAME, err); return -1; } #endif return 0; } #else int spl_load_image_fat_os(struct spl_image_info *spl_image, struct spl_boot_device *bootdev, struct blk_desc *block_dev, int partition) { return -ENOSYS; } #endif |