summaryrefslogtreecommitdiff
path: root/cmd/zfs.c
blob: 384ac4c9396cc288c5169aaac2210f49321849fd (plain)
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
162
163
164
165
166
167
168
169
170
// SPDX-License-Identifier: GPL-2.0+
/*
 *
 * ZFS filesystem porting to Uboot by
 * Jorgen Lundman <lundman at lundman.net>
 *
 * zfsfs support
 * made from existing GRUB Sources by Sun, GNU and others.
 */

#include <common.h>
#include <part.h>
#include <config.h>
#include <command.h>
#include <image.h>
#include <linux/ctype.h>
#include <asm/byteorder.h>
#include <zfs_common.h>
#include <linux/stat.h>
#include <malloc.h>

#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
#include <usb.h>
#endif

#if !CONFIG_IS_ENABLED(DOS_PARTITION) && !CONFIG_IS_ENABLED(EFI_PARTITION)
#error DOS or EFI partition support must be selected
#endif

#define DOS_PART_MAGIC_OFFSET	0x1fe
#define DOS_FS_TYPE_OFFSET	0x36
#define DOS_FS32_TYPE_OFFSET	0x52

static int do_zfs_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	char *filename = NULL;
	int dev;
	int part;
	ulong addr = 0;
	disk_partition_t info;
	struct blk_desc *dev_desc;
	char buf[12];
	unsigned long count;
	const char *addr_str;
	struct zfs_file zfile;
	struct device_s vdev;

	if (argc < 3)
		return CMD_RET_USAGE;

	count = 0;
	addr = simple_strtoul(argv[3], NULL, 16);
	filename = env_get("bootfile");
	switch (argc) {
	case 3:
		addr_str = env_get("loadaddr");
		if (addr_str != NULL)
			addr = simple_strtoul(addr_str, NULL, 16);
		else
			addr = CONFIG_SYS_LOAD_ADDR;

		break;
	case 4:
		break;
	case 5:
		filename = argv[4];
		break;
	case 6:
		filename = argv[4];
		count = simple_strtoul(argv[5], NULL, 16);
		break;

	default:
		return cmd_usage(cmdtp);
	}

	if (!filename) {
		puts("** No boot file defined **\n");
		return 1;
	}

	part = blk_get_device_part_str(argv[1], argv[2], &dev_desc, &info, 1);
	if (part < 0)
		return 1;

	dev = dev_desc->devnum;
	printf("Loading file \"%s\" from %s device %d%c%c\n",
		filename, argv[1], dev,
		part ? ':' : ' ', part ? part + '0' : ' ');

	zfs_set_blk_dev(dev_desc, &info);
	vdev.part_length = info.size;

	memset(&zfile, 0, sizeof(zfile));
	zfile.device = &vdev;
	if (zfs_open(&zfile, filename)) {
		printf("** File not found %s **\n", filename);
		return 1;
	}

	if ((count < zfile.size) && (count != 0))
		zfile.size = (uint64_t)count;

	if (zfs_read(&zfile, (char *)addr, zfile.size) != zfile.size) {
		printf("** Unable to read \"%s\" from %s %d:%d **\n",
			   filename, argv[1], dev, part);
		zfs_close(&zfile);
		return 1;
	}

	zfs_close(&zfile);

	/* Loading ok, update default load address */
	load_addr = addr;

	printf("%llu bytes read\n", zfile.size);
	env_set_hex("filesize", zfile.size);

	return 0;
}


int zfs_print(const char *entry, const struct zfs_dirhook_info *data)
{
	printf("%s %s\n",
		   data->dir ? "<DIR> " : "		 ",
		   entry);
	return 0; /* 0 continue, 1 stop */
}



static int do_zfs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	const char *filename = "/";
	int part;
	struct blk_desc *dev_desc;
	disk_partition_t info;
	struct device_s vdev;

	if (argc < 2)
		return cmd_usage(cmdtp);

	if (argc == 4)
		filename = argv[3];

	part = blk_get_device_part_str(argv[1], argv[2], &dev_desc, &info, 1);
	if (part < 0)
		return 1;

	zfs_set_blk_dev(dev_desc, &info);
	vdev.part_length = info.size;

	zfs_ls(&vdev, filename,
		   zfs_print);

	return 0;
}


U_BOOT_CMD(zfsls, 4, 1, do_zfs_ls,
		   "list files in a directory (default /)",
		   "<interface> <dev[:part]> [directory]\n"
		   "	  - list files from 'dev' on 'interface' in a '/DATASET/@/$dir/'");

U_BOOT_CMD(zfsload, 6, 0, do_zfs_load,
		   "load binary file from a ZFS filesystem",
		   "<interface> <dev[:part]> [addr] [filename] [bytes]\n"
		   "	  - load binary file '/DATASET/@/$dir/$file' from 'dev' on 'interface'\n"
		   "		 to address 'addr' from ZFS filesystem");