zfs.c
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/*
*
* ZFS filesystem porting to Uboot by
* Jorgen Lundman <lundman at lundman.net>
*
* zfsfs support
* made from existing GRUB Sources by Sun, GNU and others.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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");