1 files changed, 32 insertions, 8 deletions

diff --git a/meta/recipes-kernel/linux/linux-wrs_git.bb b/meta/recipes-kernel/linux/linux-wrs_git.bb
index 1f2b11e975..209648b8e7 100644
--- a/meta/recipes-kernel/linux/linux-wrs_git.bb
+++ b/meta/recipes-kernel/linux/linux-wrs_git.bb
@@ -10,10 +10,10 @@ PV = "2.6.34+git${SRCPV}"
 # To use a staged, on-disk bare clone of a Wind River Kernel, use a 
 # variant of the below
 # SRC_URI = "git://///path/to/kernel/default_kernel.git;fullclone=1"
-SRC_URI = "git://git.pokylinux.org/linux-2.6-windriver.git;protocol=git;fullclone=1;branch=${WRMACHINE}-${LINUX_KERNEL_TYPE};name=machine \
+SRC_URI = "git://git.pokylinux.org/linux-2.6-windriver.git;protocol=git;fullclone=1;branch=${KBRANCH};name=machine \
            git://git.pokylinux.org/linux-2.6-windriver.git;protocol=git;noclone=1;branch=wrs_meta;name=meta"
 
-WRMACHINE = "${MACHINE}"
+WRMACHINE = "UNDEFINED"
 WRMACHINE_qemux86  = "common_pc"
 WRMACHINE_qemux86-64  = "common_pc_64"
 WRMACHINE_qemuppc  = "qemu_ppc32"
@@ -24,11 +24,33 @@ WRMACHINE_routerstationpro = "routerstationpro"
 WRMACHINE_mpc8315e-rdb = "fsl-mpc8315e-rdb"
 WRMACHINE_beagleboard = "beagleboard"
 
+# Determine which branch to fetch and build. Not all branches are in the
+# upstream repo (but will be locally created after the fetchers run) so 
+# a fallback branch needs to be chosen. 
+#
+# The default machine 'UNDEFINED'. If the machine is not set to a specific
+# branch in this recipe or in a recipe extension, then we fallback to a 
+# branch that is always present 'standard'. This sets the KBRANCH variable
+# and is used in the SRC_URI. The machine is then set back to ${MACHINE},
+# since futher processing will use that to create local branches
+python __anonymous () {
+    import bb, re
+
+    bb.data.setVar("KBRANCH", "${WRMACHINE}-${LINUX_KERNEL_TYPE}", d)
+    mach = bb.data.getVar("WRMACHINE", d, 1)
+    if mach == "UNDEFINED":
+        bb.data.setVar("KBRANCH", "standard", d)
+        bb.data.setVar("WRMACHINE", "${MACHINE}", d)
+        # track the global configuration on a bootstrapped BSP
+        bb.data.setVar("SRCREV_machine", "${SRCREV_meta}", d)
+        bb.data.setVar("BOOTSTRAP", "t", d)
+}
+
 COMPATIBLE_MACHINE = "(qemuarm|qemux86|qemuppc|qemumips|qemux86-64|atom-pc|routerstationpro|mpc8315e-rdb|beagleboard)"
 
 LINUX_VERSION = "v2.6.34"
 LINUX_VERSION_EXTENSION = "-wr-${LINUX_KERNEL_TYPE}"
-PR = "r12"
+PR = "r13"
 
 S = "${WORKDIR}/linux"
 B = "${WORKDIR}/linux-${WRMACHINE}-${LINUX_KERNEL_TYPE}-build"
@@ -69,7 +91,7 @@ do_patch() {
 }
 
 validate_branches() {
-        branch_head=`git show-ref -s --heads ${WRMACHINE}-${LINUX_KERNEL_TYPE}`
+        branch_head=`git show-ref -s --heads ${KBRANCH}`
         meta_head=`git show-ref -s --heads wrs_meta`
         target_branch_head="${SRCREV_machine}"
         target_meta_head="${SRCREV_meta}"
@@ -132,14 +154,16 @@ IFS='
         cd ${S}
 
         # checkout and clobber and unimportant files
-        git checkout -f ${WRMACHINE}-${LINUX_KERNEL_TYPE}
-
-        validate_branches
+        git checkout -f ${KBRANCH}
+        
+        if [ -z "${BOOTSTRAP}" ]; then
+                validate_branches
+        fi
 
         # this second checkout is intentional, we want to leave ourselves
         # on the branch to be built, but validate_branches could have changed
         # our initial checkout. So we do it a second time to be sure
-        git checkout -f ${WRMACHINE}-${LINUX_KERNEL_TYPE}
+        git checkout -f ${KBRANCH}
 }
 do_wrlinux_checkout[dirs] = "${S}"