powerpc/booke64: Use appropriate -mcpu

By default use -mcpu=powerpc64 rather than -mtune=power7

Add options for e5500/e6500, with fallbacks for older compilers.

Hide the POWER cpu options in booke configs.
Signed-off-by: Scott Wood <scottwood@freescale.com>

arch/powerpc/Makefile

@@ -88,13 +88,22 @@ CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mcmodel=medium,-mminimal-toc)
 CFLAGS-$(CONFIG_PPC64)	+= $(call cc-option,-mno-pointers-to-nested-functions)
 CFLAGS-$(CONFIG_PPC32)	:= -ffixed-r2 -mmultiple
 
+ifeq ($(CONFIG_PPC_BOOK3S_64),y)
 CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4)
+else
+CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
+endif
+
 CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell)
 CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4)
 CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5)
 CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6)
 CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7)
 
+E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64)
+CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU)
+CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU))
+
 CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell)
 
 KBUILD_CPPFLAGS	+= -Iarch/$(ARCH)

arch/powerpc/platforms/Kconfig.cputype

@@ -96,18 +96,31 @@ config GENERIC_CPU
 
 config CELL_CPU
 	bool "Cell Broadband Engine"
+	depends on PPC_BOOK3S_64
 
 config POWER4_CPU
 	bool "POWER4"
+	depends on PPC_BOOK3S_64
 
 config POWER5_CPU
 	bool "POWER5"
+	depends on PPC_BOOK3S_64
 
 config POWER6_CPU
 	bool "POWER6"
+	depends on PPC_BOOK3S_64
 
 config POWER7_CPU
 	bool "POWER7"
+	depends on PPC_BOOK3S_64
+
+config E5500_CPU
+	bool "Freescale e5500"
+	depends on E500
+
+config E6500_CPU
+	bool "Freescale e6500"
+	depends on E500
 
 endchoice