upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
139 lines
4.0 KiB
139 lines
4.0 KiB
/*
|
|
* (C) Copyright 2011 - 2012 Samsung Electronics
|
|
* EXT4 filesystem implementation in Uboot by
|
|
* Uma Shankar <uma.shankar@samsung.com>
|
|
* Manjunatha C Achar <a.manjunatha@samsung.com>
|
|
*
|
|
* made from existing ext2/dev.c file of Uboot
|
|
* (C) Copyright 2004
|
|
* esd gmbh <www.esd-electronics.com>
|
|
* Reinhard Arlt <reinhard.arlt@esd-electronics.com>
|
|
*
|
|
* based on code of fs/reiserfs/dev.c by
|
|
*
|
|
* (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.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Changelog:
|
|
* 0.1 - Newly created file for ext4fs support. Taken from
|
|
* fs/ext2/dev.c file in uboot.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <config.h>
|
|
#include <ext4fs.h>
|
|
#include <ext_common.h>
|
|
|
|
unsigned long 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)
|
|
{
|
|
ext4fs_block_dev_desc = rbdd;
|
|
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)
|
|
{
|
|
ALLOC_CACHE_ALIGN_BUFFER(char, sec_buf, SECTOR_SIZE);
|
|
unsigned block_len;
|
|
|
|
/* 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);
|
|
return 0;
|
|
}
|
|
|
|
/* Get the read to the beginning of a partition */
|
|
sector += byte_offset >> SECTOR_BITS;
|
|
byte_offset &= SECTOR_SIZE - 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;
|
|
}
|
|
|
|
if (byte_offset != 0) {
|
|
/* 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,
|
|
(unsigned long *) sec_buf) != 1) {
|
|
printf(" ** ext2fs_devread() read error **\n");
|
|
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);
|
|
sector++;
|
|
}
|
|
|
|
if (byte_len == 0)
|
|
return 1;
|
|
|
|
/* read sector aligned part */
|
|
block_len = byte_len & ~(SECTOR_SIZE - 1);
|
|
|
|
if (block_len == 0) {
|
|
ALLOC_CACHE_ALIGN_BUFFER(u8, p, SECTOR_SIZE);
|
|
|
|
block_len = SECTOR_SIZE;
|
|
ext4fs_block_dev_desc->block_read(ext4fs_block_dev_desc->dev,
|
|
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,
|
|
block_len / SECTOR_SIZE,
|
|
(unsigned long *) buf) !=
|
|
block_len / SECTOR_SIZE) {
|
|
printf(" ** %s read error - block\n", __func__);
|
|
return 0;
|
|
}
|
|
block_len = byte_len & ~(SECTOR_SIZE - 1);
|
|
buf += block_len;
|
|
byte_len -= block_len;
|
|
sector += block_len / SECTOR_SIZE;
|
|
|
|
if (byte_len != 0) {
|
|
/* 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,
|
|
(unsigned long *) sec_buf) != 1) {
|
|
printf("* %s read error - last part\n", __func__);
|
|
return 0;
|
|
}
|
|
memcpy(buf, sec_buf, byte_len);
|
|
}
|
|
return 1;
|
|
}
|
|
|