witherspoon: (temporarily) disable stop11 to work around special wakeup problem
Akshay is currently helping with the debug, but with stop11 enabled
in the XML, we have CPUs dissappear followed by HARD lockups when
running 'sensors' on the host (which gets CPU sensors by using
special wakeup).
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
diff --git a/openpower/configs/witherspoon_defconfig b/openpower/configs/witherspoon_defconfig
index 0f7a5c3..7e5dc99 100644
--- a/openpower/configs/witherspoon_defconfig
+++ b/openpower/configs/witherspoon_defconfig
@@ -1,5 +1,6 @@
BR2_powerpc64le=y
BR2_powerpc_power8=y
+BR2_GLOBAL_PATCH_DIR="$(BR2_EXTERNAL_OP_BUILD_PATH)/patches/witherspoon-patches"
BR2_BINUTILS_EXTRA_CONFIG_OPTIONS="--enable-targets=powerpc64-linux"
BR2_EXTRA_GCC_CONFIG_OPTIONS="--enable-targets=powerpc64-linux"
BR2_TOOLCHAIN_BUILDROOT_CXX=y
diff --git a/openpower/patches/witherspoon-patches/machine-xml/0001-Disable-stop11-to-workaround-special-wakeup-bug.patch b/openpower/patches/witherspoon-patches/machine-xml/0001-Disable-stop11-to-workaround-special-wakeup-bug.patch
new file mode 100644
index 0000000..7531aa6
--- /dev/null
+++ b/openpower/patches/witherspoon-patches/machine-xml/0001-Disable-stop11-to-workaround-special-wakeup-bug.patch
@@ -0,0 +1,26 @@
+From 4a67af9ad8cafeac5bddbcad3e7d875ab5538c27 Mon Sep 17 00:00:00 2001
+From: Stewart Smith <stewart@linux.vnet.ibm.com>
+Date: Thu, 15 Feb 2018 14:18:07 +1100
+Subject: [PATCH] Disable stop11 to workaround special wakeup bug
+
+Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
+---
+ witherspoon.xml | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/witherspoon.xml b/witherspoon.xml
+index 09a09fc68217..eddd1ac257e6 100644
+--- a/witherspoon.xml
++++ b/witherspoon.xml
+@@ -17295,7 +17295,7 @@
+ </attribute>
+ <attribute>
+ <id>SUPPORTED_STOP_STATES</id>
+- <default>0xEC100000</default>
++ <default>0xEC000000</default>
+ </attribute>
+ <attribute>
+ <id>SUPPORTS_DYNAMIC_MEM_VOLT</id>
+--
+2.14.3
+