Set kernel version to 4.2
We switch from using our own tree, to building with upstream tarballs.
Currently we still require a small number of out of tree patches; this
list will shrink as we get the last of the patches upstream, to the
point where will just set the version.
The patches are generated from the tree at
https://github.com/open-power/linux still, and imported into the
buildroot overlay.
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/openpower/linux/linux-0006-powerpc-kexec-Reset-secondary-cpu-endianess-before-k.patch b/openpower/linux/linux-0006-powerpc-kexec-Reset-secondary-cpu-endianess-before-k.patch
new file mode 100644
index 0000000..0381305
--- /dev/null
+++ b/openpower/linux/linux-0006-powerpc-kexec-Reset-secondary-cpu-endianess-before-k.patch
@@ -0,0 +1,47 @@
+From 301de197bdeefada57511b991f67a584e3ab2c43 Mon Sep 17 00:00:00 2001
+From: Samuel Mendoza-Jonas <sam.mj@au1.ibm.com>
+Date: Mon, 29 Jun 2015 13:43:51 +1000
+Subject: [PATCH 6/9] powerpc/kexec: Reset secondary cpu endianess before kexec
+
+If the target kernel does not inlcude the FIXUP_ENDIAN check, coming
+from a different-endian kernel will cause the target kernel to panic.
+All ppc64 kernels can handle starting in big-endian mode, so return to
+big-endian before branching into the target kernel.
+
+This mainly affects pseries as secondaries on powernv are returned to
+OPAL.
+
+Signed-off-by: Samuel Mendoza-Jonas <sam.mj@au1.ibm.com>
+Signed-off-by: Joel Stanley <joel@jms.id.au>
+---
+ arch/powerpc/kernel/misc_64.S | 13 +++++++++++--
+ 1 file changed, 11 insertions(+), 2 deletions(-)
+
+diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
+index 4e314b9..6e4168c 100644
+--- a/arch/powerpc/kernel/misc_64.S
++++ b/arch/powerpc/kernel/misc_64.S
+@@ -475,9 +475,18 @@ _GLOBAL(kexec_wait)
+ #ifdef CONFIG_KEXEC /* use no memory without kexec */
+ lwz r4,0(r5)
+ cmpwi 0,r4,0
+- bnea 0x60
++ beq 99b
++#ifdef CONFIG_PPC_BOOK3S_64
++ li r10,0x60
++ mfmsr r11
++ clrrdi r11,r11,1 /* Clear MSR_LE */
++ mtsrr0 r10
++ mtsrr1 r11
++ rfid
++#else
++ ba 0x60
++#endif
+ #endif
+- b 99b
+
+ /* this can be in text because we won't change it until we are
+ * running in real anyways
+--
+2.5.0
+