Dan Murphy | b7b5b0c | 2014-01-16 11:23:29 -0600 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2014 |
| 3 | * Texas Instruments, <www.ti.com> |
| 4 | * |
| 5 | * Dan Murphy <dmurphy@ti.com> |
| 6 | * |
| 7 | * SPDX-License-Identifier: GPL-2.0+ |
| 8 | * |
| 9 | * FAT Image Functions copied from spl_mmc.c |
| 10 | */ |
| 11 | |
| 12 | #include <common.h> |
| 13 | #include <spl.h> |
| 14 | #include <asm/u-boot.h> |
| 15 | #include <fat.h> |
| 16 | #include <image.h> |
| 17 | |
| 18 | static int fat_registered; |
| 19 | |
| 20 | #ifdef CONFIG_SPL_FAT_SUPPORT |
| 21 | static int spl_register_fat_device(block_dev_desc_t *block_dev, int partition) |
| 22 | { |
| 23 | int err = 0; |
| 24 | |
| 25 | if (fat_registered) |
| 26 | return err; |
| 27 | |
| 28 | err = fat_register_device(block_dev, partition); |
| 29 | if (err) { |
| 30 | #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT |
Dan Murphy | cb367e1 | 2014-01-16 11:23:30 -0600 | [diff] [blame] | 31 | printf("%s: fat register err - %d\n", __func__, err); |
Dan Murphy | b7b5b0c | 2014-01-16 11:23:29 -0600 | [diff] [blame] | 32 | #endif |
| 33 | hang(); |
| 34 | } |
| 35 | |
| 36 | fat_registered = 1; |
| 37 | |
| 38 | return err; |
| 39 | } |
| 40 | |
| 41 | int spl_load_image_fat(block_dev_desc_t *block_dev, |
| 42 | int partition, |
| 43 | const char *filename) |
| 44 | { |
| 45 | int err; |
| 46 | struct image_header *header; |
| 47 | |
| 48 | err = spl_register_fat_device(block_dev, partition); |
Dan Murphy | cb367e1 | 2014-01-16 11:23:30 -0600 | [diff] [blame] | 49 | if (err) |
Dan Murphy | b7b5b0c | 2014-01-16 11:23:29 -0600 | [diff] [blame] | 50 | goto end; |
| 51 | |
| 52 | header = (struct image_header *)(CONFIG_SYS_TEXT_BASE - |
| 53 | sizeof(struct image_header)); |
| 54 | |
| 55 | err = file_fat_read(filename, header, sizeof(struct image_header)); |
| 56 | if (err <= 0) |
| 57 | goto end; |
| 58 | |
| 59 | spl_parse_image_header(header); |
| 60 | |
| 61 | err = file_fat_read(filename, (u8 *)spl_image.load_addr, 0); |
| 62 | |
| 63 | end: |
| 64 | #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT |
| 65 | if (err <= 0) |
Dan Murphy | cb367e1 | 2014-01-16 11:23:30 -0600 | [diff] [blame] | 66 | printf("%s: error reading image %s, err - %d\n", |
| 67 | __func__, filename, err); |
Dan Murphy | b7b5b0c | 2014-01-16 11:23:29 -0600 | [diff] [blame] | 68 | #endif |
| 69 | |
| 70 | return (err <= 0); |
| 71 | } |
| 72 | |
| 73 | #ifdef CONFIG_SPL_OS_BOOT |
| 74 | int spl_load_image_fat_os(block_dev_desc_t *block_dev, int partition) |
| 75 | { |
| 76 | int err; |
Tom Rini | 70566b6 | 2014-03-28 12:03:42 -0400 | [diff] [blame] | 77 | __maybe_unused char *file; |
Dan Murphy | b7b5b0c | 2014-01-16 11:23:29 -0600 | [diff] [blame] | 78 | |
| 79 | err = spl_register_fat_device(block_dev, partition); |
Dan Murphy | cb367e1 | 2014-01-16 11:23:30 -0600 | [diff] [blame] | 80 | if (err) |
| 81 | return err; |
Dan Murphy | b7b5b0c | 2014-01-16 11:23:29 -0600 | [diff] [blame] | 82 | |
Tom Rini | 70566b6 | 2014-03-28 12:03:42 -0400 | [diff] [blame] | 83 | #if defined(CONFIG_SPL_ENV_SUPPORT) && defined(CONFIG_SPL_OS_BOOT) |
| 84 | file = getenv("falcon_args_file"); |
| 85 | if (file) { |
| 86 | err = file_fat_read(file, (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0); |
| 87 | if (err <= 0) { |
| 88 | printf("spl: error reading image %s, err - %d, falling back to default\n", |
| 89 | file, err); |
| 90 | goto defaults; |
| 91 | } |
| 92 | file = getenv("falcon_image_file"); |
| 93 | if (file) { |
| 94 | err = spl_load_image_fat(block_dev, partition, file); |
| 95 | if (err != 0) { |
| 96 | puts("spl: falling back to default\n"); |
| 97 | goto defaults; |
| 98 | } |
| 99 | |
| 100 | return 0; |
| 101 | } else |
| 102 | puts("spl: falcon_image_file not set in environment, falling back to default\n"); |
| 103 | } else |
| 104 | puts("spl: falcon_args_file not set in environment, falling back to default\n"); |
| 105 | |
| 106 | defaults: |
| 107 | #endif |
| 108 | |
Dan Murphy | b7b5b0c | 2014-01-16 11:23:29 -0600 | [diff] [blame] | 109 | err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME, |
| 110 | (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0); |
| 111 | if (err <= 0) { |
| 112 | #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT |
Dan Murphy | cb367e1 | 2014-01-16 11:23:30 -0600 | [diff] [blame] | 113 | printf("%s: error reading image %s, err - %d\n", |
| 114 | __func__, CONFIG_SPL_FAT_LOAD_ARGS_NAME, err); |
Dan Murphy | b7b5b0c | 2014-01-16 11:23:29 -0600 | [diff] [blame] | 115 | #endif |
| 116 | return -1; |
| 117 | } |
| 118 | |
| 119 | return spl_load_image_fat(block_dev, partition, |
| 120 | CONFIG_SPL_FAT_LOAD_KERNEL_NAME); |
| 121 | } |
| 122 | #endif |
| 123 | #endif |