powerpc: Update Kconfig + Makefile to prepare for server doorbells

Move the rule to build doorbell support out of the Makefile and into a
new Kconfig boolean that platforms can select.

We will add doorbell support to pseries as well in the next patch.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Tested-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2 files changed, 8 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 8f619342f14c..44fbbea7697a 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -75,8 +75,8 @@ endif
 obj64-$(CONFIG_HIBERNATION)     += swsusp_asm64.o
 obj-$(CONFIG_MODULES)           += module.o module_$(CONFIG_WORD_SIZE).o
 obj-$(CONFIG_44x)               += cpu_setup_44x.o
-obj-$(CONFIG_PPC_FSL_BOOK3E)    += cpu_setup_fsl_booke.o dbell.o
-obj-$(CONFIG_PPC_BOOK3E_64)     += dbell.o
+obj-$(CONFIG_PPC_FSL_BOOK3E)    += cpu_setup_fsl_booke.o
+obj-$(CONFIG_PPC_DOORBELL)      += dbell.o
 obj-$(CONFIG_JUMP_LABEL)        += jump_label.o
 
 extra-y                         := head_$(CONFIG_WORD_SIZE).o
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 72afd2888cad..cea2f09c4241 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -76,6 +76,7 @@ config PPC_BOOK3E_64
         bool "Embedded processors"
         select PPC_FPU # Make it a choice ?
         select PPC_SMP_MUXED_IPI
+        select PPC_DOORBELL
 
 endchoice
 
@@ -208,6 +209,7 @@ config PPC_FSL_BOOK3E
         select FSL_EMB_PERFMON
         select PPC_SMP_MUXED_IPI
         select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
+        select PPC_DOORBELL
         default y if FSL_BOOKE
 
 config PTE_64BIT
@@ -382,4 +384,8 @@ config NOT_COHERENT_CACHE
 config CHECK_CACHE_COHERENCY
         bool
 
+config PPC_DOORBELL
+        bool
+        default n
+
 endmenu