Patch to allow menuconfig specified target_skeleton dir and device_table.txt

Buildroot Eric Malkowski 1 participant 1 message Feb 12, 2009 Kbuild

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Eric Malkowski

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2009-02-12 21:17 UTC #0 lore raw

I'm posting this to see if anyone else might benefit from being able to select in the buildroot config a target_skeleton and device_table.txt file. I find it convenient to be able to specify the following via the main menuconfig to be able to make my complete project:

buildroot.config
linux-2.6.28.x.config
busybox-1.13.x.config
uClibc-0.9.30.config
target_skeleton
device_table.txt

The first 4 come with buildroot now and are easy to override with your own, the last two can be specified in the "Target filesystem Options" submenu only when the "Custom target skeleton / device table" option is chosen as added by my patch below -- it enables two strings that default to the ones in target/generic and the user can override if they wish.

I just override the 6 items above with buildroot config and place the files pointed to in a directory and it gets everything I need to build up a setup customized for my AMD GeodeLX based boards. Also -- I don't select any "Preset Devices" or "Generic System Support" options on the "Target Options" submenu and use a default ext2 rootfs to get a bootable kernel and ramdisk.

Note -- SVN revisions below are from my own that has buildroot imported, should apply fine to current buildroot.

If you guys don't think this is useful, that's fine too -- curious what you think.

svn diff target/Makefile.in target/Config.in

Makefile.in (working copy) renamed from Makefile.in (revision 890) +5 -0

Index: target/Makefile.in
===================================================================
@@ -61,6 +61,13 @@
 include target/x86/Makefile.in
 include target/powerpc/Makefile.in
 
+# Allow custom user specified target_skeleton/device_table.txt to override
+# everything else if chosen in target filesystem options menu
+ifeq ($(BR2_TARGET_CUSTOM_SKELETON),y)
+TARGET_SKELETON=$(subst ",,$(strip $(BR2_TARGET_CUSTOM_SKELETON_DIR)))
+TARGET_DEVICE_TABLE=$(subst ",,$(strip

$(BR2_TARGET_CUSTOM_SKELETON_DEVICE_TABLE)))
+endif
+
ifeq ($(BR2_TARGET_UBOOT),y)
include target/u-boot/Makefile.in
endif

Config.in (working copy) renamed from Config.in (revision 890) +21 -0

Index: target/Config.in
===================================================================
@@ -12,6 +12,27 @@
        help
          Add a custom string to the end of the root file system name.
 
+config BR2_TARGET_CUSTOM_SKELETON
+       bool "Custom target skeleton / device table"
+       help
+         Some people may wish to use their own modified target skeleton
+         and device_table.txt file to have full control of their final
+         rootfs.  Select this option and specify the directory
+         containing your target_skeleton and file containing your
+         customized device_table.txt file or leave this option
+         cleared to use target/generic or the board support chosen
+         in target options.
+
+config BR2_TARGET_CUSTOM_SKELETON_DIR
+       string "Path to target_skeleton directory"
+       depends on BR2_TARGET_CUSTOM_SKELETON
+       default target/generic/target_skeleton
+
+config BR2_TARGET_CUSTOM_SKELETON_DEVICE_TABLE
+       string "Path to device_table.txt file"
+       depends on BR2_TARGET_CUSTOM_SKELETON
+       default target/generic/device_table.txt
+
 comment "filesystem for target device"
 
 source "target/cramfs/Config.in"