X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;ds=sidebyside;f=fs%2Fext4%2Fdev.c;h=787e04133a5dd23b1e4f627fa634d624a61b0dfb;hb=db6b5e8b028e1aab92bc2482b6e02c681819e7c9;hp=464a67d5319cf771da2aad2036fb5abf46a3e42a;hpb=fd4d564b3c80b111f18c93adb14233a6a7ddb0e9;p=u-boot

diff --git a/fs/ext4/dev.c b/fs/ext4/dev.c
index 464a67d531..787e04133a 100644
--- a/fs/ext4/dev.c
+++ b/fs/ext4/dev.c
@@ -14,20 +14,7 @@
  * (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+
  */
 
 /*
@@ -40,44 +27,50 @@
 #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 */
@@ -89,9 +82,12 @@ int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf)
 			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++;
 	}
 
@@ -99,12 +95,12 @@ int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf)
 		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);
@@ -114,16 +110,16 @@ int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf)
 
 	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 */
@@ -138,3 +134,13 @@ int ext4fs_devread(int sector, int byte_offset, int byte_len, char *buf)
 	}
 	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);
+}