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cmd_extX: use common get_device_and_partition function

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Convert ext2/4 load, ls, and write functions to use common device and
partition parsing function. With the common function "dev:part" can come
from the environment and a '-' can be used in that case.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
This commit is contained in:
Rob Herring 2012-08-23 11:31:46 +00:00 committed by Tom Rini
parent 9450106296
commit 81180819b8
7 changed files with 47 additions and 191 deletions
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102
common/cmd_ext4.c
View File

@ -56,21 +56,6 @@
#include <usb.h>
#endif
#if !defined(CONFIG_DOS_PARTITION) && !defined(CONFIG_EFI_PARTITION)
#error DOS or EFI partition support must be selected
#endif
uint64_t total_sector;
uint64_t part_offset;
#if defined(CONFIG_CMD_EXT4_WRITE)
static uint64_t part_size;
static uint16_t cur_part = 1;
#endif
#define DOS_PART_MAGIC_OFFSET 0x1fe
#define DOS_FS_TYPE_OFFSET 0x36
#define DOS_FS32_TYPE_OFFSET 0x52
int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
@ -89,77 +74,24 @@ int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
}
#if defined(CONFIG_CMD_EXT4_WRITE)
static int ext4_register_device(block_dev_desc_t *dev_desc, int part_no)
{
unsigned char buffer[SECTOR_SIZE];
disk_partition_t info;
if (!dev_desc->block_read)
return -1;
/* check if we have a MBR (on floppies we have only a PBR) */
if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) {
printf("** Can't read from device %d **\n", dev_desc->dev);
return -1;
}
if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
/* no signature found */
return -1;
}
/* First we assume there is a MBR */
if (!get_partition_info(dev_desc, part_no, &info)) {
part_offset = info.start;
cur_part = part_no;
part_size = info.size;
} else if ((strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET],
"FAT", 3) == 0) || (strncmp((char *)&buffer
[DOS_FS32_TYPE_OFFSET],
"FAT32", 5) == 0)) {
/* ok, we assume we are on a PBR only */
cur_part = 1;
part_offset = 0;
} else {
printf("** Partition %d not valid on device %d **\n",
part_no, dev_desc->dev);
return -1;
}
return 0;
}
int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
const char *filename = "/";
int part_length;
unsigned long part = 1;
int dev;
char *ep;
int dev, part;
unsigned long ram_address;
unsigned long file_size;
disk_partition_t info;
struct ext_filesystem *fs;
block_dev_desc_t *dev_desc;
if (argc < 6)
return cmd_usage(cmdtp);
dev = (int)simple_strtoul(argv[2], &ep, 16);
ext4_dev_desc = get_dev(argv[1], dev);
if (ext4_dev_desc == NULL) {
printf("Block device %s %d not supported\n", argv[1], dev);
part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info);
if (part < 0)
return 1;
}
fs = get_fs();
if (*ep) {
if (*ep != ':') {
puts("Invalid boot device, use `dev[:part]'\n");
goto fail;
}
part = simple_strtoul(++ep, NULL, 16);
}
dev = dev_desc->dev;
/* get the filename */
filename = argv[3];
@ -171,30 +103,10 @@ int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc,
file_size = simple_strtoul(argv[5], NULL, 10);
/* set the device as block device */
part_length = ext4fs_set_blk_dev(ext4_dev_desc, part);
if (part_length == 0) {
printf("Bad partition - %s %d:%lu\n", argv[1], dev, part);
goto fail;
}
/* register the device and partition */
if (ext4_register_device(ext4_dev_desc, part) != 0) {
printf("Unable to use %s %d:%lu for fattable\n",
argv[1], dev, part);
goto fail;
}
/* get the partition information */
if (!get_partition_info(ext4_dev_desc, part, &info)) {
total_sector = (info.size * info.blksz) / SECTOR_SIZE;
fs->total_sect = total_sector;
} else {
printf("error : get partition info\n");
goto fail;
}
ext4fs_set_blk_dev(dev_desc, &info);
/* mount the filesystem */
if (!ext4fs_mount(part_length)) {
if (!ext4fs_mount(info.size)) {
printf("Bad ext4 partition %s %d:%lu\n", argv[1], dev, part);
goto fail;
}

95
common/cmd_ext_common.c
View File

@ -68,13 +68,11 @@ int do_ext_load(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
char *filename = NULL;
char *ep;
int dev;
unsigned long part = 1;
int dev, part;
ulong addr = 0;
ulong part_length;
int filelen;
disk_partition_t info;
block_dev_desc_t *dev_desc;
char buf[12];
unsigned long count;
const char *addr_str;
@ -110,50 +108,19 @@ int do_ext_load(cmd_tbl_t *cmdtp, int flag, int argc,
return 1;
}
dev = (int)simple_strtoul(argv[2], &ep, 16);
ext4_dev_desc = get_dev(argv[1], dev);
if (ext4_dev_desc == NULL) {
printf("** Block device %s %d not supported\n", argv[1], dev);
part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info);
if (part < 0)
return 1;
}
if (*ep) {
if (*ep != ':') {
puts("** Invalid boot device, use `dev[:part]' **\n");
goto fail;
}
part = simple_strtoul(++ep, NULL, 16);
}
dev = dev_desc->dev;
printf("Loading file \"%s\" from %s device %d%c%c\n",
filename, argv[1], dev,
part ? ':' : ' ', part ? part + '0' : ' ');
if (part != 0) {
if (get_partition_info(ext4_dev_desc, part, &info)) {
printf("** Bad partition %lu **\n", part);
goto fail;
}
ext4fs_set_blk_dev(dev_desc, &info);
if (strncmp((char *)info.type, BOOT_PART_TYPE,
strlen(BOOT_PART_TYPE)) != 0) {
printf("** Invalid partition type \"%s\""
" (expect \"" BOOT_PART_TYPE "\")\n", info.type);
goto fail;
}
printf("Loading file \"%s\" "
"from %s device %d:%lu %s\n",
filename, argv[1], dev, part, info.name);
} else {
printf("Loading file \"%s\" from %s device %d\n",
filename, argv[1], dev);
}
part_length = ext4fs_set_blk_dev(ext4_dev_desc, part);
if (part_length == 0) {
printf("**Bad partition - %s %d:%lu **\n", argv[1], dev, part);
ext4fs_close();
goto fail;
}
if (!ext4fs_mount(part_length)) {
printf("** Bad ext2 partition or disk - %s %d:%lu **\n",
if (!ext4fs_mount(info.size)) {
printf("** Bad ext2 partition or disk - %s %d:%d **\n",
argv[1], dev, part);
ext4fs_close();
goto fail;
@ -169,7 +136,7 @@ int do_ext_load(cmd_tbl_t *cmdtp, int flag, int argc,
filelen = count;
if (ext4fs_read((char *)addr, filelen) != filelen) {
printf("** Unable to read \"%s\" from %s %d:%lu **\n",
printf("** Unable to read \"%s\" from %s %d:%d **\n",
filename, argv[1], dev, part);
ext4fs_close();
goto fail;
@ -192,41 +159,25 @@ int do_ext_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
const char *filename = "/";
int dev;
unsigned long part = 1;
char *ep;
int part_length;
if (argc < 3)
int part;
block_dev_desc_t *dev_desc;
disk_partition_t info;
if (argc < 2)
return cmd_usage(cmdtp);
dev = (int)simple_strtoul(argv[2], &ep, 16);
ext4_dev_desc = get_dev(argv[1], dev);
if (ext4_dev_desc == NULL) {
printf("\n** Block device %s %d not supported\n", argv[1], dev);
part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info);
if (part < 0)
return 1;
}
if (*ep) {
if (*ep != ':') {
puts("\n** Invalid boot device, use `dev[:part]' **\n");
goto fail;
}
part = simple_strtoul(++ep, NULL, 16);
}
if (argc == 4)
filename = argv[3];
part_length = ext4fs_set_blk_dev(ext4_dev_desc, part);
if (part_length == 0) {
printf("** Bad partition - %s %d:%lu **\n", argv[1], dev, part);
ext4fs_close();
goto fail;
}
dev = dev_desc->dev;
ext4fs_set_blk_dev(dev_desc, &info);
if (!ext4fs_mount(part_length)) {
printf("** Bad ext2 partition or disk - %s %d:%lu **\n",
if (!ext4fs_mount(info.size)) {
printf("** Bad ext2 partition or disk - %s %d:%d **\n",
argv[1], dev, part);
ext4fs_close();
goto fail;

34
fs/ext4/dev.c
View File

@ -38,26 +38,20 @@
#include <common.h>
#include <config.h>
#include <ext4fs.h>
#include <ext_common.h>
static block_dev_desc_t *ext4fs_block_dev_desc;
static disk_partition_t part_info;
unsigned long part_offset;
int ext4fs_set_blk_dev(block_dev_desc_t *rbdd, int part)
static block_dev_desc_t *ext4fs_block_dev_desc;
static disk_partition_t *part_info;
void ext4fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info)
{
ext4fs_block_dev_desc = rbdd;
if (part == 0) {
/* disk doesn't use partition table */
part_info.start = 0;
part_info.size = rbdd->lba;
part_info.blksz = rbdd->blksz;
} else {
if (get_partition_info(ext4fs_block_dev_desc,
part, &part_info))
return 0;
}
return part_info.size;
part_info = info;
part_offset = info->start;
get_fs()->total_sect = (info->size * info->blksz) / SECTOR_SIZE;
}
int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf)
@ -68,7 +62,7 @@ int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf)
/* Check partition boundaries */
if ((sector < 0)
|| ((sector + ((byte_offset + byte_len - 1) >> SECTOR_BITS)) >=
part_info.size)) {
part_info->size)) {
printf("%s read outside partition %d\n", __func__, sector);
return 0;
}
@ -88,7 +82,7 @@ int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf)
/* read first part which isn't aligned with start of sector */
if (ext4fs_block_dev_desc->
block_read(ext4fs_block_dev_desc->dev,
part_info.start + sector, 1,
part_info->start + sector, 1,
(unsigned long *) sec_buf) != 1) {
printf(" ** ext2fs_devread() read error **\n");
return 0;
@ -111,14 +105,14 @@ int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf)
block_len = SECTOR_SIZE;
ext4fs_block_dev_desc->block_read(ext4fs_block_dev_desc->dev,
part_info.start + sector,
part_info->start + sector,
1, (unsigned long *)p);
memcpy(buf, p, byte_len);
return 1;
}
if (ext4fs_block_dev_desc->block_read(ext4fs_block_dev_desc->dev,
part_info.start + sector,
part_info->start + sector,
block_len / SECTOR_SIZE,
(unsigned long *) buf) !=
block_len / SECTOR_SIZE) {
@ -134,7 +128,7 @@ int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf)
/* read rest of data which are not in whole sector */
if (ext4fs_block_dev_desc->
block_read(ext4fs_block_dev_desc->dev,
part_info.start + sector, 1,
part_info->start + sector, 1,
(unsigned long *) sec_buf) != 1) {
printf("* %s read error - last part\n", __func__);
return 0;

1
fs/ext4/ext4_common.h
View File

@ -62,7 +62,6 @@ static inline void *zalloc(size_t size)
return p;
}
extern unsigned long part_offset;
int ext4fs_read_inode(struct ext2_data *data, int ino,
struct ext2_inode *inode);
int ext4fs_read_file(struct ext2fs_node *node, int pos,

1
fs/ext4/ext4fs.c
View File

@ -43,7 +43,6 @@
#include "ext4_common.h"
int ext4fs_symlinknest;
block_dev_desc_t *ext4_dev_desc;
struct ext_filesystem ext_fs;
struct ext_filesystem *get_fs(void)

3
include/ext4fs.h
View File

@ -113,7 +113,6 @@ struct ext_filesystem {
block_dev_desc_t *dev_desc;
};
extern block_dev_desc_t *ext4_dev_desc;
extern struct ext2_data *ext4fs_root;
extern struct ext2fs_node *ext4fs_file;
@ -137,6 +136,6 @@ void ext4fs_close(void);
int ext4fs_ls(const char *dirname);
void ext4fs_free_node(struct ext2fs_node *node, struct ext2fs_node *currroot);
int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf);
int ext4fs_set_blk_dev(block_dev_desc_t *rbdd, int part);
void ext4fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info);
long int read_allocated_block(struct ext2_inode *inode, int fileblock);
#endif

2
include/ext_common.h
View File

@ -186,6 +186,8 @@ struct ext2_data {
struct ext2fs_node diropen;
};
extern unsigned long part_offset;
int do_ext2ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
int do_ext2load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,