kernel: add dynamic configuration and patching

This change adds the ability to dynamicaly modify a git based
linux repo during the do_patch and do_configure changes.

The bulk of the work is done by the kern_tools, and the recipe
simply needs to add createme and modifyme scripts to go along
with the existing configme.

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

2 files changed, 33 insertions, 8 deletions

diff --git a/meta/packages/kern-tools/kern-tools-native_git.bb b/meta/packages/kern-tools/kern-tools-native_git.bb
index 4e4b86b979..d21d2b0aaa 100644
--- a/meta/packages/kern-tools/kern-tools-native_git.bb
+++ b/meta/packages/kern-tools/kern-tools-native_git.bb
@@ -14,7 +14,8 @@ S = "${WORKDIR}"
 
 kern_tools_LIST = kgit kgit-init kgit-meta \
                   kgit-checkpoint kgit-clean \
-                  generate_cfg kconf_check configme
+                  generate_cfg kconf_check configme \
+                  createme modifyme get_defconfig
 
 do_compile() { 
         :
diff --git a/meta/packages/linux/linux-wrs_git.bb b/meta/packages/linux/linux-wrs_git.bb
index d6a81d1a59..ddd387743b 100644
--- a/meta/packages/linux/linux-wrs_git.bb
+++ b/meta/packages/linux/linux-wrs_git.bb
@@ -24,13 +24,34 @@ COMPATIBLE_MACHINE = "(qemuarm|qemux86|qemuppc|qemumips)"
 
 LINUX_VERSION = "v2.6.34"
 LINUX_VERSION_EXTENSION = "-wr-${LINUX_KERNEL_TYPE}"
-PR = "r2"
+PR = "r3"
 
 S = "${WORKDIR}/linux"
 B = "${WORKDIR}/linux-${WRMACHINE}-${LINUX_KERNEL_TYPE}-build"
 
 do_patch() {
-    echo "[INFO] Patching is currently not supported"
+        cd ${S}
+        if [ -f ${WORKDIR}/defconfig ]; then
+            defconfig=${WORKDIR}/defconfig
+        fi
+
+        createme ${TARGET_ARCH} ${WRMACHINE}-${LINUX_KERNEL_TYPE} ${defconfig}
+        if [ $? -ne 0 ]; then
+                echo "ERROR. Could not create ${WRMACHINE}-${LINUX_KERNEL_TYPE}"
+                exit 1
+        fi
+
+        updateme ${WORKDIR}
+        if [ $? -ne 0 ]; then
+                echo "ERROR. Could not update ${WRMACHINE}-${LINUX_KERNEL_TYPE}"
+                exit 1
+        fi
+
+        patchme ${WRMACHINE}-${LINUX_KERNEL_TYPE}
+        if [ $? -ne 0 ]; then
+                echo "ERROR. Could not modify ${WRMACHINE}-${LINUX_KERNEL_TYPE}"
+                exit 1
+        fi
 }
 
 do_wrlinux_checkout() {
@@ -50,9 +71,14 @@ addtask wrlinux_checkout before do_patch after do_unpack
 
 do_wrlinux_configme() {
         echo "Doing wrlinux configme"
-        rm -rf ${B}
+
         cd ${S}
-        configme
+        configme --reconfig
+        if [ $? -ne 0 ]; then
+                echo "ERROR. Could not configure ${WRMACHINE}-${LINUX_KERNEL_TYPE}"
+                exit 1
+        fi
+
         echo "# CONFIG_WRNOTE is not set" >> ${B}/.config
         echo "# Global settings from linux recipe" >> ${B}/.config
         echo "CONFIG_LOCALVERSION="\"${LINUX_VERSION_EXTENSION}\" >> ${B}/.config
@@ -72,9 +98,7 @@ do_wrlinux_link_vmlinux() {
 do_wrlinux_configme[depends] = "kern-tools-native:do_populate_sysroot"
 addtask wrlinux_configme before do_configure after do_patch
 addtask wrlinux_link_vmlinux after do_compile before do_install
-
-# XXX 
-#addtask wrlinux_configcheck after do_configure before do_compile
+addtask wrlinux_configcheck after do_configure before do_compile
 
 inherit kernel