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authorStephen Warren <swarren@nvidia.com>2012-10-22 06:43:50 (GMT)
committerTom Rini <trini@ti.com>2012-10-29 21:21:19 (GMT)
commit03e2ecf6b83e43803f7eed9547d0973b7eb1c8fc (patch)
tree6595ea8f6eef3aa28b7f404946bae4579aa19f90 /doc/README.ext4
parent672ee2110c478d04bd95111bb6c9d5bcacf4b7aa (diff)
downloadu-boot-03e2ecf6b83e43803f7eed9547d0973b7eb1c8fc.tar.xz
fs: separate CONFIG_FS_{FAT, EXT4} from CONFIG_CMD_{FAT, EXT*}
This makes the FAT and ext4 filesystem implementations build if CONFIG_FS_{FAT,EXT4} are defined, rather than basing the build on whether CONFIG_CMD_{FAT,EXT*} are defined. This will allow the filesystems to be built separately from the filesystem-specific commands that use them. This paves the way for the creation of filesystem-generic commands that used the filesystems, without requiring the filesystem- specific commands. Minor documentation changes are made for this change. The new config options are automatically selected by the old config options to retain backwards-compatibility. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Diffstat (limited to 'doc/README.ext4')
-rw-r--r--doc/README.ext413
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/README.ext4 b/doc/README.ext4
index b3ea8b7..b7d0ad3 100644
--- a/doc/README.ext4
+++ b/doc/README.ext4
@@ -1,15 +1,28 @@
This patch series adds support for ext4 ls,load and write features in uboot
Journaling is supported for write feature.
+To enable support for the ext4 (and ext2) filesystem implementation,
+#define CONFIG_FS_EXT4
+
+If you want write support,
+#define CONFIG_EXT4_WRITE
+
To Enable ext2 ls and load commands, modify the board specific config file with
#define CONFIG_CMD_EXT2
+This automatically defines CONFIG_FS_EXT4 for you.
To Enable ext4 ls and load commands, modify the board specific config file with
#define CONFIG_CMD_EXT4
+This automatically defines CONFIG_FS_EXT4 for you.
To enable ext4 write command, modify the board specific config file with
#define CONFIG_CMD_EXT4
#define CONFIG_CMD_EXT4_WRITE
+These automatically define CONFIG_FS_EXT4 and CONFIG_EXT4_WRITE for you.
+
+Also relevant are the generic filesystem commands,
+#define CONFIG_CMD_FS_GENERIC
+This does not automatically enable EXT4 support for you.
Steps to test: