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11#include <common.h>
12#include <env.h>
13#include <log.h>
14#include <spl.h>
15#include <asm/u-boot.h>
16#include <fat.h>
17#include <errno.h>
18#include <image.h>
19#include <linux/libfdt.h>
20
21static int fat_registered;
22
23static int spl_register_fat_device(struct blk_desc *block_dev, int partition)
24{
25 int err = 0;
26
27 if (fat_registered)
28 return err;
29
30 err = fat_register_device(block_dev, partition);
31 if (err) {
32#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
33 printf("%s: fat register err - %d\n", __func__, err);
34#endif
35 return err;
36 }
37
38 fat_registered = 1;
39
40 return err;
41}
42
43static ulong spl_fit_read(struct spl_load_info *load, ulong file_offset,
44 ulong size, void *buf)
45{
46 loff_t actread;
47 int ret;
48 char *filename = (char *)load->filename;
49
50 ret = fat_read_file(filename, buf, file_offset, size, &actread);
51 if (ret)
52 return ret;
53
54 return actread;
55}
56
57int spl_load_image_fat(struct spl_image_info *spl_image,
58 struct blk_desc *block_dev, int partition,
59 const char *filename)
60{
61 int err;
62 struct image_header *header;
63
64 err = spl_register_fat_device(block_dev, partition);
65 if (err)
66 goto end;
67
68 header = spl_get_load_buffer(-sizeof(*header), sizeof(*header));
69
70 err = file_fat_read(filename, header, sizeof(struct image_header));
71 if (err <= 0)
72 goto end;
73
74 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
75 image_get_magic(header) == FDT_MAGIC) {
76 err = file_fat_read(filename, (void *)CONFIG_SYS_LOAD_ADDR, 0);
77 if (err <= 0)
78 goto end;
79 err = spl_parse_image_header(spl_image,
80 (struct image_header *)CONFIG_SYS_LOAD_ADDR);
81 if (err == -EAGAIN)
82 return err;
83 if (err == 0)
84 err = 1;
85 } else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
86 image_get_magic(header) == FDT_MAGIC) {
87 struct spl_load_info load;
88
89 debug("Found FIT\n");
90 load.read = spl_fit_read;
91 load.bl_len = 1;
92 load.filename = (void *)filename;
93 load.priv = NULL;
94
95 return spl_load_simple_fit(spl_image, &load, 0, header);
96 } else {
97 err = spl_parse_image_header(spl_image, header);
98 if (err)
99 goto end;
100
101 err = file_fat_read(filename,
102 (u8 *)(uintptr_t)spl_image->load_addr, 0);
103 }
104
105end:
106#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
107 if (err <= 0)
108 printf("%s: error reading image %s, err - %d\n",
109 __func__, filename, err);
110#endif
111
112 return (err <= 0);
113}
114
115#ifdef CONFIG_SPL_OS_BOOT
116int spl_load_image_fat_os(struct spl_image_info *spl_image,
117 struct blk_desc *block_dev, int partition)
118{
119 int err;
120 __maybe_unused char *file;
121
122 err = spl_register_fat_device(block_dev, partition);
123 if (err)
124 return err;
125
126#if defined(CONFIG_SPL_ENV_SUPPORT) && defined(CONFIG_SPL_OS_BOOT)
127 file = env_get("falcon_args_file");
128 if (file) {
129 err = file_fat_read(file, (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
130 if (err <= 0) {
131 printf("spl: error reading image %s, err - %d, falling back to default\n",
132 file, err);
133 goto defaults;
134 }
135 file = env_get("falcon_image_file");
136 if (file) {
137 err = spl_load_image_fat(spl_image, block_dev,
138 partition, file);
139 if (err != 0) {
140 puts("spl: falling back to default\n");
141 goto defaults;
142 }
143
144 return 0;
145 } else
146 puts("spl: falcon_image_file not set in environment, falling back to default\n");
147 } else
148 puts("spl: falcon_args_file not set in environment, falling back to default\n");
149
150defaults:
151#endif
152
153 err = file_fat_read(CONFIG_SPL_FS_LOAD_ARGS_NAME,
154 (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
155 if (err <= 0) {
156#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
157 printf("%s: error reading image %s, err - %d\n",
158 __func__, CONFIG_SPL_FS_LOAD_ARGS_NAME, err);
159#endif
160 return -1;
161 }
162
163 return spl_load_image_fat(spl_image, block_dev, partition,
164 CONFIG_SPL_FS_LOAD_KERNEL_NAME);
165}
166#else
167int spl_load_image_fat_os(struct spl_image_info *spl_image,
168 struct blk_desc *block_dev, int partition)
169{
170 return -ENOSYS;
171}
172#endif
173
