u-boot/fs/fs.c

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/*
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <common.h>
#include <part.h>
#include <ext4fs.h>
#include <fat.h>
#include <fs.h>
DECLARE_GLOBAL_DATA_PTR;
static block_dev_desc_t *fs_dev_desc;
static disk_partition_t fs_partition;
static int fs_type = FS_TYPE_ANY;
static inline int fs_ls_unsupported(const char *dirname)
{
printf("** Unrecognized filesystem type **\n");
return -1;
}
static inline int fs_read_unsupported(const char *filename, ulong addr,
int offset, int len)
{
printf("** Unrecognized filesystem type **\n");
return -1;
}
#ifdef CONFIG_FS_FAT
static int fs_probe_fat(void)
{
return fat_set_blk_dev(fs_dev_desc, &fs_partition);
}
static void fs_close_fat(void)
{
}
#define fs_ls_fat file_fat_ls
static int fs_read_fat(const char *filename, ulong addr, int offset, int len)
{
int len_read;
len_read = file_fat_read_at(filename, offset,
(unsigned char *)addr, len);
if (len_read == -1) {
printf("** Unable to read file %s **\n", filename);
return -1;
}
return len_read;
}
#else
static inline int fs_probe_fat(void)
{
return -1;
}
static inline void fs_close_fat(void)
{
}
#define fs_ls_fat fs_ls_unsupported
#define fs_read_fat fs_read_unsupported
#endif
#ifdef CONFIG_FS_EXT4
static int fs_probe_ext(void)
{
ext4fs_set_blk_dev(fs_dev_desc, &fs_partition);
if (!ext4fs_mount(fs_partition.size)) {
ext4fs_close();
return -1;
}
return 0;
}
static void fs_close_ext(void)
{
ext4fs_close();
}
#define fs_ls_ext ext4fs_ls
static int fs_read_ext(const char *filename, ulong addr, int offset, int len)
{
int file_len;
int len_read;
if (offset != 0) {
printf("** Cannot support non-zero offset **\n");
return -1;
}
file_len = ext4fs_open(filename);
if (file_len < 0) {
printf("** File not found %s **\n", filename);
ext4fs_close();
return -1;
}
if (len == 0)
len = file_len;
len_read = ext4fs_read((char *)addr, len);
ext4fs_close();
if (len_read != len) {
printf("** Unable to read file %s **\n", filename);
return -1;
}
return len_read;
}
#else
static inline int fs_probe_ext(void)
{
return -1;
}
static inline void fs_close_ext(void)
{
}
#define fs_ls_ext fs_ls_unsupported
#define fs_read_ext fs_read_unsupported
#endif
static struct {
int fstype;
int (*probe)(void);
} fstypes[] = {
{
.fstype = FS_TYPE_FAT,
.probe = fs_probe_fat,
},
{
.fstype = FS_TYPE_EXT,
.probe = fs_probe_ext,
},
};
int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
{
int part, i;
#ifdef CONFIG_NEEDS_MANUAL_RELOC
static int relocated;
if (!relocated) {
for (i = 0; i < ARRAY_SIZE(fstypes); i++)
fstypes[i].probe += gd->reloc_off;
relocated = 1;
}
#endif
part = get_device_and_partition(ifname, dev_part_str, &fs_dev_desc,
&fs_partition, 1);
if (part < 0)
return -1;
for (i = 0; i < ARRAY_SIZE(fstypes); i++) {
if ((fstype != FS_TYPE_ANY) && (fstype != fstypes[i].fstype))
continue;
if (!fstypes[i].probe()) {
fs_type = fstypes[i].fstype;
return 0;
}
}
printf("** Unrecognized filesystem type **\n");
return -1;
}
static void fs_close(void)
{
switch (fs_type) {
case FS_TYPE_FAT:
fs_close_fat();
break;
case FS_TYPE_EXT:
fs_close_ext();
break;
default:
break;
}
fs_type = FS_TYPE_ANY;
}
int fs_ls(const char *dirname)
{
int ret;
switch (fs_type) {
case FS_TYPE_FAT:
ret = fs_ls_fat(dirname);
break;
case FS_TYPE_EXT:
ret = fs_ls_ext(dirname);
break;
default:
ret = fs_ls_unsupported(dirname);
break;
}
fs_close();
return ret;
}
int fs_read(const char *filename, ulong addr, int offset, int len)
{
int ret;
switch (fs_type) {
case FS_TYPE_FAT:
ret = fs_read_fat(filename, addr, offset, len);
break;
case FS_TYPE_EXT:
ret = fs_read_ext(filename, addr, offset, len);
break;
default:
ret = fs_read_unsupported(filename, addr, offset, len);
break;
}
fs_close();
return ret;
}
int do_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype, int cmdline_base)
{
unsigned long addr;
const char *addr_str;
const char *filename;
unsigned long bytes;
unsigned long pos;
int len_read;
char buf[12];
unsigned long time;
if (argc < 2)
return CMD_RET_USAGE;
if (argc > 7)
return CMD_RET_USAGE;
if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
return 1;
if (argc >= 4) {
addr = simple_strtoul(argv[3], NULL, cmdline_base);
} else {
addr_str = getenv("loadaddr");
if (addr_str != NULL)
addr = simple_strtoul(addr_str, NULL, 16);
else
addr = CONFIG_SYS_LOAD_ADDR;
}
if (argc >= 5) {
filename = argv[4];
} else {
filename = getenv("bootfile");
if (!filename) {
puts("** No boot file defined **\n");
return 1;
}
}
if (argc >= 6)
bytes = simple_strtoul(argv[5], NULL, cmdline_base);
else
bytes = 0;
if (argc >= 7)
pos = simple_strtoul(argv[6], NULL, cmdline_base);
else
pos = 0;
time = get_timer(0);
len_read = fs_read(filename, addr, pos, bytes);
time = get_timer(time);
if (len_read <= 0)
return 1;
printf("%d bytes read in %lu ms", len_read, time);
if (time > 0) {
puts(" (");
print_size(len_read / time * 1000, "/s");
puts(")");
}
puts("\n");
sprintf(buf, "0x%x", len_read);
setenv("filesize", buf);
return 0;
}
int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
int fstype)
{
if (argc < 2)
return CMD_RET_USAGE;
if (argc > 4)
return CMD_RET_USAGE;
if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstype))
return 1;
if (fs_ls(argc >= 4 ? argv[3] : "/"))
return 1;
return 0;
}