xref: /openbmc/u-boot/common/spl/spl_ext.c (revision 407b5b956a2e0facf6668fc8b295f4be9205c83e)
1  // SPDX-License-Identifier: GPL-2.0+
2  
3  #include <common.h>
4  #include <spl.h>
5  #include <asm/u-boot.h>
6  #include <ext4fs.h>
7  #include <errno.h>
8  #include <image.h>
9  
10  int spl_load_image_ext(struct spl_image_info *spl_image,
11  		       struct blk_desc *block_dev, int partition,
12  		       const char *filename)
13  {
14  	s32 err;
15  	struct image_header *header;
16  	loff_t filelen, actlen;
17  	disk_partition_t part_info = {};
18  
19  	header = spl_get_load_buffer(-sizeof(*header), sizeof(*header));
20  
21  	if (part_get_info(block_dev, partition, &part_info)) {
22  		printf("spl: no partition table found\n");
23  		return -1;
24  	}
25  
26  	ext4fs_set_blk_dev(block_dev, &part_info);
27  
28  	err = ext4fs_mount(0);
29  	if (!err) {
30  #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
31  		printf("%s: ext4fs mount err - %d\n", __func__, err);
32  #endif
33  		goto end;
34  	}
35  
36  	err = ext4fs_open(filename, &filelen);
37  	if (err < 0) {
38  		puts("spl: ext4fs_open failed\n");
39  		goto end;
40  	}
41  	err = ext4fs_read((char *)header, 0, sizeof(struct image_header), &actlen);
42  	if (err < 0) {
43  		puts("spl: ext4fs_read failed\n");
44  		goto end;
45  	}
46  
47  	err = spl_parse_image_header(spl_image, header);
48  	if (err < 0) {
49  		puts("spl: ext: failed to parse image header\n");
50  		goto end;
51  	}
52  
53  	err = ext4fs_read((char *)spl_image->load_addr, 0, filelen, &actlen);
54  
55  end:
56  #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
57  	if (err < 0)
58  		printf("%s: error reading image %s, err - %d\n",
59  		       __func__, filename, err);
60  #endif
61  
62  	return err < 0;
63  }
64  
65  #ifdef CONFIG_SPL_OS_BOOT
66  int spl_load_image_ext_os(struct spl_image_info *spl_image,
67  			  struct blk_desc *block_dev, int partition)
68  {
69  	int err;
70  	__maybe_unused loff_t filelen, actlen;
71  	disk_partition_t part_info = {};
72  	__maybe_unused char *file;
73  
74  	if (part_get_info(block_dev, partition, &part_info)) {
75  		printf("spl: no partition table found\n");
76  		return -1;
77  	}
78  
79  	ext4fs_set_blk_dev(block_dev, &part_info);
80  
81  	err = ext4fs_mount(0);
82  	if (!err) {
83  #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
84  		printf("%s: ext4fs mount err - %d\n", __func__, err);
85  #endif
86  		return -1;
87  	}
88  #if defined(CONFIG_SPL_ENV_SUPPORT)
89  	file = env_get("falcon_args_file");
90  	if (file) {
91  		err = ext4fs_open(file, &filelen);
92  		if (err < 0) {
93  			puts("spl: ext4fs_open failed\n");
94  			goto defaults;
95  		}
96  		err = ext4fs_read((void *)CONFIG_SYS_SPL_ARGS_ADDR, 0, filelen, &actlen);
97  		if (err < 0) {
98  			printf("spl: error reading image %s, err - %d, falling back to default\n",
99  			       file, err);
100  			goto defaults;
101  		}
102  		file = env_get("falcon_image_file");
103  		if (file) {
104  			err = spl_load_image_ext(spl_image, block_dev,
105  						 partition, file);
106  			if (err != 0) {
107  				puts("spl: falling back to default\n");
108  				goto defaults;
109  			}
110  
111  			return 0;
112  		} else {
113  			puts("spl: falcon_image_file not set in environment, falling back to default\n");
114  		}
115  	} else {
116  		puts("spl: falcon_args_file not set in environment, falling back to default\n");
117  	}
118  
119  defaults:
120  #endif
121  
122  	err = ext4fs_open(CONFIG_SPL_FS_LOAD_ARGS_NAME, &filelen);
123  	if (err < 0)
124  		puts("spl: ext4fs_open failed\n");
125  
126  	err = ext4fs_read((void *)CONFIG_SYS_SPL_ARGS_ADDR, 0, filelen, &actlen);
127  	if (err < 0) {
128  #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
129  		printf("%s: error reading image %s, err - %d\n",
130  		       __func__, CONFIG_SPL_FS_LOAD_ARGS_NAME, err);
131  #endif
132  		return -1;
133  	}
134  
135  	return spl_load_image_ext(spl_image, block_dev, partition,
136  			CONFIG_SPL_FS_LOAD_KERNEL_NAME);
137  }
138  #else
139  int spl_load_image_ext_os(struct spl_image_info *spl_image,
140  			  struct blk_desc *block_dev, int partition)
141  {
142  	return -ENOSYS;
143  }
144  #endif
145