zfs: Add ZFS filesystem support
U-Boot port is based on sources forked from GRUB-0.97 by Sun in 2004,
which can be found here:
http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/grub/grub-0.97/stage2/zfs-include/zfs.h
Released by Sun for GRUB under the license:
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
GRUB official releases include ZFS in version:
ftp://alpha.gnu.org/gnu/grub/grub-1.99~rc1.tar.gz
And patched against GRUB Bazaar repository for ashift fixes (4KB HDDs)
more conveniently found at github:
e7b6ef3ac3
Signed-off-by: Jorgen Lundman <lundman@lundman.net>
This commit is contained in:
Jorgen Lundman
committed by
Wolfgang Denk
Wolfgang Denk
parent
753ac61088
commit
4d3c95f5ea
236
common/cmd_zfs.c
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236
common/cmd_zfs.c
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/*
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*
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* ZFS filesystem porting to Uboot by
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* Jorgen Lundman <lundman at lundman.net>
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*
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* zfsfs support
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* made from existing GRUB Sources by Sun, GNU and others.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*/
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#include <common.h>
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#include <part.h>
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#include <config.h>
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#include <command.h>
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#include <image.h>
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#include <linux/ctype.h>
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#include <asm/byteorder.h>
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#include <zfs_common.h>
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#include <linux/stat.h>
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#include <malloc.h>
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#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
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#include <usb.h>
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#endif
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#if !defined(CONFIG_DOS_PARTITION) && !defined(CONFIG_EFI_PARTITION)
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#error DOS or EFI partition support must be selected
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#endif
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#define DOS_PART_MAGIC_OFFSET 0x1fe
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#define DOS_FS_TYPE_OFFSET 0x36
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#define DOS_FS32_TYPE_OFFSET 0x52
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static int do_zfs_load(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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char *filename = NULL;
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char *ep;
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int dev;
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unsigned long part = 1;
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ulong addr = 0;
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ulong part_length;
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disk_partition_t info;
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char buf[12];
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unsigned long count;
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const char *addr_str;
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struct zfs_file zfile;
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struct device_s vdev;
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if (argc < 3)
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return CMD_RET_USAGE;
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count = 0;
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addr = simple_strtoul(argv[3], NULL, 16);
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filename = getenv("bootfile");
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switch (argc) {
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case 3:
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addr_str = getenv("loadaddr");
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if (addr_str != NULL)
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addr = simple_strtoul(addr_str, NULL, 16);
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else
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addr = CONFIG_SYS_LOAD_ADDR;
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break;
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case 4:
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break;
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case 5:
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filename = argv[4];
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break;
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case 6:
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filename = argv[4];
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count = simple_strtoul(argv[5], NULL, 16);
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break;
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default:
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return cmd_usage(cmdtp);
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}
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if (!filename) {
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puts("** No boot file defined **\n");
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return 1;
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}
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dev = (int)simple_strtoul(argv[2], &ep, 16);
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zfs_dev_desc = get_dev(argv[1], dev);
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if (zfs_dev_desc == NULL) {
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printf("** Block device %s %d not supported\n", argv[1], dev);
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return 1;
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}
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if (*ep) {
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if (*ep != ':') {
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puts("** Invalid boot device, use `dev[:part]' **\n");
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return 1;
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}
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part = simple_strtoul(++ep, NULL, 16);
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}
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if (part != 0) {
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if (get_partition_info(zfs_dev_desc, part, &info)) {
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printf("** Bad partition %lu **\n", part);
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return 1;
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}
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if (strncmp((char *)info.type, BOOT_PART_TYPE,
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strlen(BOOT_PART_TYPE)) != 0) {
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printf("** Invalid partition type \"%s\" (expect \"" BOOT_PART_TYPE "\")\n",
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info.type);
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return 1;
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}
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printf("Loading file \"%s\" "
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"from %s device %d:%lu %s\n",
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filename, argv[1], dev, part, info.name);
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} else {
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printf("Loading file \"%s\" from %s device %d\n",
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filename, argv[1], dev);
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}
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part_length = zfs_set_blk_dev(zfs_dev_desc, part);
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if (part_length == 0) {
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printf("**Bad partition - %s %d:%lu **\n", argv[1], dev, part);
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return 1;
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}
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vdev.part_length = part_length;
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memset(&zfile, 0, sizeof(zfile));
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zfile.device = &vdev;
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if (zfs_open(&zfile, filename)) {
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printf("** File not found %s\n", filename);
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return 1;
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}
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if ((count < zfile.size) && (count != 0))
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zfile.size = (uint64_t)count;
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if (zfs_read(&zfile, (char *)addr, zfile.size) != zfile.size) {
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printf("** Unable to read \"%s\" from %s %d:%lu **\n",
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filename, argv[1], dev, part);
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zfs_close(&zfile);
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return 1;
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}
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zfs_close(&zfile);
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/* Loading ok, update default load address */
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load_addr = addr;
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printf("%llu bytes read\n", zfile.size);
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sprintf(buf, "%llX", zfile.size);
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setenv("filesize", buf);
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return 0;
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}
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int zfs_print(const char *entry, const struct zfs_dirhook_info *data)
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{
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printf("%s %s\n",
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data->dir ? "<DIR> " : " ",
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entry);
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return 0; /* 0 continue, 1 stop */
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}
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static int do_zfs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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const char *filename = "/";
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int dev;
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unsigned long part = 1;
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char *ep;
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int part_length;
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struct device_s vdev;
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if (argc < 3)
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return cmd_usage(cmdtp);
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dev = (int)simple_strtoul(argv[2], &ep, 16);
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zfs_dev_desc = get_dev(argv[1], dev);
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if (zfs_dev_desc == NULL) {
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printf("\n** Block device %s %d not supported\n", argv[1], dev);
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return 1;
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}
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if (*ep) {
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if (*ep != ':') {
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puts("\n** Invalid boot device, use `dev[:part]' **\n");
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return 1;
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}
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part = simple_strtoul(++ep, NULL, 16);
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}
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if (argc == 4)
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filename = argv[3];
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part_length = zfs_set_blk_dev(zfs_dev_desc, part);
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if (part_length == 0) {
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printf("** Bad partition - %s %d:%lu **\n", argv[1], dev, part);
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return 1;
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}
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vdev.part_length = part_length;
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zfs_ls(&vdev, filename,
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zfs_print);
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return 0;
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}
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U_BOOT_CMD(zfsls, 4, 1, do_zfs_ls,
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"list files in a directory (default /)",
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"<interface> <dev[:part]> [directory]\n"
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" - list files from 'dev' on 'interface' in a '/DATASET/@/$dir/'");
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U_BOOT_CMD(zfsload, 6, 0, do_zfs_load,
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"load binary file from a ZFS filesystem",
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"<interface> <dev[:part]> [addr] [filename] [bytes]\n"
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" - load binary file '/DATASET/@/$dir/$file' from 'dev' on 'interface'\n"
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" to address 'addr' from ZFS filesystem");
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