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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 | // 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> 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) { #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT printf("%s: fat register err - %d\n", __func__, err); #endif return err; } fat_registered = 1; return err; } static ulong spl_fit_read(struct spl_load_info *load, ulong file_offset, ulong size, void *buf) { loff_t actread; int ret; char *filename = load->priv; ret = fat_read_file(filename, buf, file_offset, size, &actread); if (ret) return ret; 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: #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT if (err < 0) printf("%s: error reading image %s, err - %d\n", __func__, filename, err); #endif 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 defined(CONFIG_SPL_ENV_SUPPORT) && defined(CONFIG_SPL_OS_BOOT) 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 image %s, err - %d, falling back to default\n", file, err); 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; } return 0; } else puts("spl: falcon_image_file not set in environment, falling back to default\n"); } else puts("spl: falcon_args_file not set in environment, falling back to default\n"); defaults: #endif err = file_fat_read(CONFIG_SPL_FS_LOAD_ARGS_NAME, (void *)CONFIG_SPL_PAYLOAD_ARGS_ADDR, 0); if (err <= 0) { #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT printf("%s: error reading image %s, err - %d\n", __func__, CONFIG_SPL_FS_LOAD_ARGS_NAME, err); #endif return -1; } return spl_load_image_fat(spl_image, bootdev, block_dev, partition, CONFIG_SPL_FS_LOAD_KERNEL_NAME); } #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 |