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Dan Murphy773b5942014-01-16 11:23:29 -06001/*
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>
Nikita Kiryanov339245b2015-11-08 17:11:45 +020016#include <errno.h>
Dan Murphy773b5942014-01-16 11:23:29 -060017#include <image.h>
Lokesh Vutla97ca3642016-05-24 10:34:39 +053018#include <libfdt.h>
Dan Murphy773b5942014-01-16 11:23:29 -060019
20static int fat_registered;
21
Simon Glass4101f682016-02-29 15:25:34 -070022static int spl_register_fat_device(struct blk_desc *block_dev, int partition)
Dan Murphy773b5942014-01-16 11:23:29 -060023{
24 int err = 0;
25
26 if (fat_registered)
27 return err;
28
29 err = fat_register_device(block_dev, partition);
30 if (err) {
31#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
Dan Murphy8cffe5b2014-01-16 11:23:30 -060032 printf("%s: fat register err - %d\n", __func__, err);
Dan Murphy773b5942014-01-16 11:23:29 -060033#endif
Guillaume GARDET7d2b4e72014-10-15 17:53:14 +020034 return err;
Dan Murphy773b5942014-01-16 11:23:29 -060035 }
36
37 fat_registered = 1;
38
39 return err;
40}
41
Lokesh Vutla97ca3642016-05-24 10:34:39 +053042static ulong spl_fit_read(struct spl_load_info *load, ulong file_offset,
43 ulong size, void *buf)
44{
45 loff_t actread;
46 int ret;
47 char *filename = (char *)load->filename;
48
49 ret = fat_read_file(filename, buf, file_offset, size, &actread);
50 if (ret)
51 return ret;
52
53 return actread;
54}
55
Simon Glass710e9ca2016-09-24 18:20:15 -060056int spl_load_image_fat(struct spl_image_info *spl_image,
57 struct blk_desc *block_dev, int partition,
58 const char *filename)
Dan Murphy773b5942014-01-16 11:23:29 -060059{
60 int err;
61 struct image_header *header;
62
63 err = spl_register_fat_device(block_dev, partition);
Dan Murphy8cffe5b2014-01-16 11:23:30 -060064 if (err)
Dan Murphy773b5942014-01-16 11:23:29 -060065 goto end;
66
67 header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
68 sizeof(struct image_header));
69
70 err = file_fat_read(filename, header, sizeof(struct image_header));
71 if (err <= 0)
72 goto end;
73
Lokesh Vutla97ca3642016-05-24 10:34:39 +053074 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
75 image_get_magic(header) == FDT_MAGIC) {
76 struct spl_load_info load;
Dan Murphy773b5942014-01-16 11:23:29 -060077
Lokesh Vutla97ca3642016-05-24 10:34:39 +053078 debug("Found FIT\n");
79 load.read = spl_fit_read;
80 load.bl_len = 1;
81 load.filename = (void *)filename;
82 load.priv = NULL;
83
Simon Glassf4d7d852016-09-24 18:20:16 -060084 return spl_load_simple_fit(spl_image, &load, 0, header);
Lokesh Vutla97ca3642016-05-24 10:34:39 +053085 } else {
Simon Glass710e9ca2016-09-24 18:20:15 -060086 err = spl_parse_image_header(spl_image, header);
Lokesh Vutla97ca3642016-05-24 10:34:39 +053087 if (err)
88 goto end;
89
Michal Simek1eefe142016-04-27 16:07:20 +020090 err = file_fat_read(filename,
Simon Glass710e9ca2016-09-24 18:20:15 -060091 (u8 *)(uintptr_t)spl_image->load_addr, 0);
Lokesh Vutla97ca3642016-05-24 10:34:39 +053092 }
Dan Murphy773b5942014-01-16 11:23:29 -060093
94end:
95#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
96 if (err <= 0)
Dan Murphy8cffe5b2014-01-16 11:23:30 -060097 printf("%s: error reading image %s, err - %d\n",
98 __func__, filename, err);
Dan Murphy773b5942014-01-16 11:23:29 -060099#endif
100
101 return (err <= 0);
102}
103
104#ifdef CONFIG_SPL_OS_BOOT
Simon Glass710e9ca2016-09-24 18:20:15 -0600105int spl_load_image_fat_os(struct spl_image_info *spl_image,
106 struct blk_desc *block_dev, int partition)
Dan Murphy773b5942014-01-16 11:23:29 -0600107{
108 int err;
Tom Riniae1590e2014-03-28 12:03:42 -0400109 __maybe_unused char *file;
Dan Murphy773b5942014-01-16 11:23:29 -0600110
111 err = spl_register_fat_device(block_dev, partition);
Dan Murphy8cffe5b2014-01-16 11:23:30 -0600112 if (err)
113 return err;
Dan Murphy773b5942014-01-16 11:23:29 -0600114
Tom Riniae1590e2014-03-28 12:03:42 -0400115#if defined(CONFIG_SPL_ENV_SUPPORT) && defined(CONFIG_SPL_OS_BOOT)
Simon Glass00caae62017-08-03 12:22:12 -0600116 file = env_get("falcon_args_file");
Tom Riniae1590e2014-03-28 12:03:42 -0400117 if (file) {
118 err = file_fat_read(file, (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
119 if (err <= 0) {
120 printf("spl: error reading image %s, err - %d, falling back to default\n",
121 file, err);
122 goto defaults;
123 }
Simon Glass00caae62017-08-03 12:22:12 -0600124 file = env_get("falcon_image_file");
Tom Riniae1590e2014-03-28 12:03:42 -0400125 if (file) {
Simon Glass710e9ca2016-09-24 18:20:15 -0600126 err = spl_load_image_fat(spl_image, block_dev,
127 partition, file);
Tom Riniae1590e2014-03-28 12:03:42 -0400128 if (err != 0) {
129 puts("spl: falling back to default\n");
130 goto defaults;
131 }
132
133 return 0;
134 } else
135 puts("spl: falcon_image_file not set in environment, falling back to default\n");
136 } else
137 puts("spl: falcon_args_file not set in environment, falling back to default\n");
138
139defaults:
140#endif
141
Guillaume GARDET205b4f32014-10-15 17:53:11 +0200142 err = file_fat_read(CONFIG_SPL_FS_LOAD_ARGS_NAME,
Dan Murphy773b5942014-01-16 11:23:29 -0600143 (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
144 if (err <= 0) {
145#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
Dan Murphy8cffe5b2014-01-16 11:23:30 -0600146 printf("%s: error reading image %s, err - %d\n",
Guillaume GARDET205b4f32014-10-15 17:53:11 +0200147 __func__, CONFIG_SPL_FS_LOAD_ARGS_NAME, err);
Dan Murphy773b5942014-01-16 11:23:29 -0600148#endif
149 return -1;
150 }
151
Simon Glass710e9ca2016-09-24 18:20:15 -0600152 return spl_load_image_fat(spl_image, block_dev, partition,
Guillaume GARDET205b4f32014-10-15 17:53:11 +0200153 CONFIG_SPL_FS_LOAD_KERNEL_NAME);
Dan Murphy773b5942014-01-16 11:23:29 -0600154}
Nikita Kiryanov339245b2015-11-08 17:11:45 +0200155#else
Simon Glass710e9ca2016-09-24 18:20:15 -0600156int spl_load_image_fat_os(struct spl_image_info *spl_image,
157 struct blk_desc *block_dev, int partition)
Nikita Kiryanov339245b2015-11-08 17:11:45 +0200158{
159 return -ENOSYS;
160}
Dan Murphy773b5942014-01-16 11:23:29 -0600161#endif