diff options
Diffstat (limited to 'qemu/roms/u-boot/fs/ext4/dev.c')
| -rw-r--r-- | qemu/roms/u-boot/fs/ext4/dev.c | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/qemu/roms/u-boot/fs/ext4/dev.c b/qemu/roms/u-boot/fs/ext4/dev.c deleted file mode 100644 index e0b513a4e..000000000 --- a/qemu/roms/u-boot/fs/ext4/dev.c +++ /dev/null @@ -1,146 +0,0 @@ -/* - * (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> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * 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> -#include "ext4_common.h" - -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 = ((uint64_t)info->size * info->blksz) >> - get_fs()->dev_desc->log2blksz; -} - -int ext4fs_devread(lbaint_t sector, int byte_offset, int byte_len, char *buf) -{ - 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) >> 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 >> log2blksz; - byte_offset &= ext4fs_block_dev_desc->blksz - 1; - - 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 */ - 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(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++; - } - - if (byte_len == 0) - return 1; - - /* read sector aligned part */ - block_len = byte_len & ~(ext4fs_block_dev_desc->blksz - 1); - - if (block_len == 0) { - ALLOC_CACHE_ALIGN_BUFFER(u8, p, ext4fs_block_dev_desc->blksz); - - 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); - 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 >> log2blksz, - (unsigned long *) buf) != - block_len >> log2blksz) { - printf(" ** %s read error - block\n", __func__); - return 0; - } - block_len = byte_len & ~(ext4fs_block_dev_desc->blksz - 1); - buf += block_len; - byte_len -= block_len; - sector += block_len / ext4fs_block_dev_desc->blksz; - - 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; -} - -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); -} |