ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/uboot/fs/reiserfs/dev.c b/marvell/uboot/fs/reiserfs/dev.c
new file mode 100644
index 0000000..6825545
--- /dev/null
+++ b/marvell/uboot/fs/reiserfs/dev.c
@@ -0,0 +1,98 @@
+/*
+ * (C) Copyright 2003 - 2004
+ * Sysgo AG, <www.elinos.com>, Pavel Bartusek <pba@sysgo.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+
+#include <common.h>
+#include <config.h>
+#include <reiserfs.h>
+
+#include "reiserfs_private.h"
+
+static block_dev_desc_t *reiserfs_block_dev_desc;
+static disk_partition_t *part_info;
+
+
+void reiserfs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info)
+{
+ reiserfs_block_dev_desc = rbdd;
+ part_info = info;
+}
+
+
+int reiserfs_devread (int sector, int byte_offset, int byte_len, char *buf)
+{
+ char sec_buf[SECTOR_SIZE];
+ unsigned block_len;
+/*
+ unsigned len = byte_len;
+ u8 *start = buf;
+*/
+ /*
+ * Check partition boundaries
+ */
+ if (sector < 0
+ || ((sector + ((byte_offset + byte_len - 1) >> SECTOR_BITS))
+ >= part_info->size)) {
+/* errnum = ERR_OUTSIDE_PART; */
+ printf (" ** reiserfs_devread() read outside partition\n");
+ return 0;
+ }
+
+ /*
+ * Get the read to the beginning of a partition.
+ */
+ sector += byte_offset >> SECTOR_BITS;
+ byte_offset &= SECTOR_SIZE - 1;
+
+#if defined(DEBUG)
+ printf (" <%d, %d, %d> ", sector, byte_offset, byte_len);
+#endif
+
+
+ if (reiserfs_block_dev_desc == NULL)
+ return 0;
+
+
+ if (byte_offset != 0) {
+ /* read first part which isn't aligned with start of sector */
+ if (reiserfs_block_dev_desc->block_read(reiserfs_block_dev_desc->dev,
+ part_info->start + sector, 1,
+ (unsigned long *)sec_buf) != 1) {
+ printf (" ** reiserfs_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++;
+ }
+
+ /* read sector aligned part */
+ block_len = byte_len & ~(SECTOR_SIZE-1);
+ if (reiserfs_block_dev_desc->block_read(reiserfs_block_dev_desc->dev,
+ part_info->start + sector, block_len/SECTOR_SIZE,
+ (unsigned long *)buf) != block_len/SECTOR_SIZE) {
+ printf (" ** reiserfs_devread() read error - block\n");
+ return 0;
+ }
+ 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 (reiserfs_block_dev_desc->block_read(reiserfs_block_dev_desc->dev,
+ part_info->start + sector, 1,
+ (unsigned long *)sec_buf) != 1) {
+ printf (" ** reiserfs_devread() read error - last part\n");
+ return 0;
+ }
+ memcpy(buf, sec_buf, byte_len);
+ }
+
+ return 1;
+}