* (C) Copyright 2003 - 2004
* Sysgo AG, <www.elinos.com>, Pavel Bartusek <pba@sysgo.com>
*
- * 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.
- *
- * This program is distributed in the hope that 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, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
+ * SPDX-License-Identifier: GPL-2.0+
*/
/*
#include <config.h>
#include <ext4fs.h>
#include <ext_common.h>
+#include "ext4_common.h"
-unsigned long part_offset;
+lbaint_t part_offset;
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)
{
+ assert(rbdd->blksz == (1 << rbdd->log2blksz));
ext4fs_block_dev_desc = rbdd;
+ get_fs()->dev_desc = rbdd;
part_info = info;
part_offset = info->start;
- get_fs()->total_sect = (info->size * info->blksz) / SECTOR_SIZE;
- get_fs()->dev_desc = rbdd;
+ get_fs()->total_sect = (info->size * info->blksz) >>
+ get_fs()->dev_desc->log2blksz;
}
-int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf)
+int ext4fs_devread(lbaint_t sector, int byte_offset, int byte_len, char *buf)
{
- ALLOC_CACHE_ALIGN_BUFFER(char, sec_buf, SECTOR_SIZE);
unsigned block_len;
+ int log2blksz = ext4fs_block_dev_desc->log2blksz;
+ ALLOC_CACHE_ALIGN_BUFFER(char, sec_buf, (ext4fs_block_dev_desc ?
+ ext4fs_block_dev_desc->blksz :
+ 0));
+ if (ext4fs_block_dev_desc == NULL) {
+ printf("** Invalid Block Device Descriptor (NULL)\n");
+ return 0;
+ }
/* Check partition boundaries */
- if ((sector < 0)
- || ((sector + ((byte_offset + byte_len - 1) >> SECTOR_BITS)) >=
- part_info->size)) {
- printf("%s read outside partition %d\n", __func__, sector);
+ if ((sector < 0) ||
+ ((sector + ((byte_offset + byte_len - 1) >> log2blksz))
+ >= part_info->size)) {
+ printf("%s read outside partition " LBAFU "\n", __func__,
+ sector);
return 0;
}
/* Get the read to the beginning of a partition */
- sector += byte_offset >> SECTOR_BITS;
- byte_offset &= SECTOR_SIZE - 1;
+ sector += byte_offset >> log2blksz;
+ byte_offset &= ext4fs_block_dev_desc->blksz - 1;
- debug(" <%d, %d, %d>\n", sector, byte_offset, byte_len);
-
- if (ext4fs_block_dev_desc == NULL) {
- printf("** Invalid Block Device Descriptor (NULL)\n");
- return 0;
- }
+ debug(" <" LBAFU ", %d, %d>\n", sector, byte_offset, byte_len);
if (byte_offset != 0) {
/* read first part which isn't aligned with start of sector */
return 0;
}
memcpy(buf, sec_buf + byte_offset,
- min(SECTOR_SIZE - byte_offset, byte_len));
- buf += min(SECTOR_SIZE - byte_offset, byte_len);
- byte_len -= min(SECTOR_SIZE - byte_offset, byte_len);
+ min(ext4fs_block_dev_desc->blksz
+ - byte_offset, byte_len));
+ buf += min(ext4fs_block_dev_desc->blksz
+ - byte_offset, byte_len);
+ byte_len -= min(ext4fs_block_dev_desc->blksz
+ - byte_offset, byte_len);
sector++;
}
return 1;
/* read sector aligned part */
- block_len = byte_len & ~(SECTOR_SIZE - 1);
+ block_len = byte_len & ~(ext4fs_block_dev_desc->blksz - 1);
if (block_len == 0) {
- ALLOC_CACHE_ALIGN_BUFFER(u8, p, SECTOR_SIZE);
+ ALLOC_CACHE_ALIGN_BUFFER(u8, p, ext4fs_block_dev_desc->blksz);
- block_len = SECTOR_SIZE;
+ block_len = ext4fs_block_dev_desc->blksz;
ext4fs_block_dev_desc->block_read(ext4fs_block_dev_desc->dev,
part_info->start + sector,
1, (unsigned long *)p);
if (ext4fs_block_dev_desc->block_read(ext4fs_block_dev_desc->dev,
part_info->start + sector,
- block_len / SECTOR_SIZE,
+ block_len >> log2blksz,
(unsigned long *) buf) !=
- block_len / SECTOR_SIZE) {
+ block_len >> log2blksz) {
printf(" ** %s read error - block\n", __func__);
return 0;
}
- block_len = byte_len & ~(SECTOR_SIZE - 1);
+ block_len = byte_len & ~(ext4fs_block_dev_desc->blksz - 1);
buf += block_len;
byte_len -= block_len;
- sector += block_len / SECTOR_SIZE;
+ sector += block_len / ext4fs_block_dev_desc->blksz;
if (byte_len != 0) {
/* read rest of data which are not in whole sector */
}
return 1;
}
+
+int ext4_read_superblock(char *buffer)
+{
+ struct ext_filesystem *fs = get_fs();
+ int sect = SUPERBLOCK_START >> fs->dev_desc->log2blksz;
+ int off = SUPERBLOCK_START % fs->dev_desc->blksz;
+
+ return ext4fs_devread(sect, off, SUPERBLOCK_SIZE,
+ buffer);
+}
projects / karo-tx-uboot.git / blobdiff