X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=doc%2FREADME.JFFS2;h=f0e9bc1b37aacf8ebb8b0ddc50d61e577b1f9399;hb=0544c63681d2ea3607faf374e9c56f101e365b42;hp=0d39c46453a8489a61403a3bb09e9b8cd77a4fcb;hpb=c609719b8d1b2dca590e0ed499016d041203e403;p=oweals%2Fu-boot.git

diff --git a/doc/README.JFFS2 b/doc/README.JFFS2
index 0d39c46453..f0e9bc1b37 100644
--- a/doc/README.JFFS2
+++ b/doc/README.JFFS2
@@ -2,12 +2,21 @@ JFFS2 options and usage.
 -----------------------
 
 JFFS2 in U-Boot is a read only implementation of the file system in
-Linux with the same name. To use JFFS2 define CFG_CMD_JFFS2.
+Linux with the same name. To use JFFS2 define CONFIG_CMD_JFFS2.
 
 The module adds three new commands.
 fsload  - load binary file from a file system image
 fsinfo  - print information about file systems
 ls      - list files in a directory
+chpart  - change active partition
+
+If you boot from a partition which is mounted writable, and you
+update your boot environment by replacing single files on that
+partition, you should also define CONFIG_SYS_JFFS2_SORT_FRAGMENTS. Scanning
+the JFFS2 filesystem takes *much* longer with this feature, though.
+Sorting is done while inserting into the fragment list, which is
+more or less a bubble sort. That algorithm is known to be O(n^2),
+thus you should really consider if you can avoid it!
 
 
 There is two ways for JFFS2 to find the disk. The default way uses
@@ -15,16 +24,16 @@ the flash_info structure to find the start of a JFFS2 disk (called
 partition in the code) and you can change where the partition is with
 two defines.
 
-CFG_JFFS2_FIRST_BANK
+CONFIG_SYS_JFFS2_FIRST_BANK
 	defined the first flash bank to use
 
-CFG_JFFS2_FIRST_SECTOR
+CONFIG_SYS_JFFS2_FIRST_SECTOR
 	defines the first sector to use
 
 
-The second way is to define CFG_JFFS_CUSTOM_PART and implement the
+The second way is to define CONFIG_SYS_JFFS_CUSTOM_PART and implement the
 jffs2_part_info(int part_num) function in your board specific files.
-In this mode CFG_JFFS2_FIRST_BANK and CFG_JFFS2_FIRST_SECTOR is not
+In this mode CONFIG_SYS_JFFS2_FIRST_BANK and CONFIG_SYS_JFFS2_FIRST_SECTOR is not
 used.
 
 The input is a partition number starting with 0.
@@ -32,7 +41,7 @@ Return a pointer to struct part_info or NULL for error;
 
 Ex jffs2_part_info() for one partition.
 ---
-#if defined CFG_JFFS_CUSTOM_PART
+#if defined CONFIG_SYS_JFFS_CUSTOM_PART
 #include <jffs2/jffs2.h>
 
 static struct part_info part;
@@ -60,9 +69,6 @@ jffs2_part_info(int part_num)
 
 TODO.
 
-        Add a new command so it's actually possible to change
-	partition.
-
-        Remove the assumption that JFFS can dereference a pointer
-        into the disk. The current code do not work with memory holes
-        or hardware with a sliding window (PCMCIA).
+	Remove the assumption that JFFS can dereference a pointer
+	into the disk. The current code do not work with memory holes
+	or hardware with a sliding window (PCMCIA).