powerpc: set CONFIG_PPC_OF=y always for ARCH=powerpc

The CONFIG_PPC_OF symbol is used to mean that the firmware device tree
access functions are available.  Since we always have a device tree
with ARCH=powerpc, make CONFIG_PPC_OF always Y for ARCH=powerpc.

This fixes some compile errors reported by Kumar Gala, but in a
different way to his patch.  This also makes prom_parse.o be compiled
only if CONFIG_PPC_OF so that non-OF ARCH=ppc platforms will compile.

Signed-off-by: Paul Mackerras <paulus@samba.org>

3 files changed, 5 insertions, 7 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 5692edb3491e..427ae0f3e8a9 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -329,9 +329,7 @@ config PPC_CELL
         select MMIO_NVRAM
 
 config PPC_OF
-        bool
-        depends on PPC_MULTIPLATFORM    # for now
-        default y
+        def_bool y
 
 config XICS
         depends on PPC_PSERIES
@@ -399,7 +397,6 @@ config IBMVIO
 config IBMEBUS
         depends on PPC_PSERIES
         bool "Support for GX bus based adapters"
-        default y
         help
           Bus device driver for GX bus based adapters.
 
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index a852b379d9eb..45b362ffa795 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -12,8 +12,7 @@ CFLAGS_btext.o		+= -fPIC
 endif
 
 obj-y                           := semaphore.o cputable.o ptrace.o syscalls.o \
-                                   irq.o align.o signal_32.o pmc.o vdso.o \
-                                   prom_parse.o
+                                   irq.o align.o signal_32.o pmc.o vdso.o
 obj-y                           += vdso32/
 obj-$(CONFIG_PPC64)             += setup_64.o binfmt_elf32.o sys_ppc32.o \
                                    signal_64.o ptrace32.o systbl.o \
@@ -22,7 +21,7 @@ obj-$(CONFIG_PPC64)		+= setup_64.o binfmt_elf32.o sys_ppc32.o \
 obj-$(CONFIG_PPC64)             += vdso64/
 obj-$(CONFIG_ALTIVEC)           += vecemu.o vector.o
 obj-$(CONFIG_POWER4)            += idle_power4.o
-obj-$(CONFIG_PPC_OF)            += of_device.o
+obj-$(CONFIG_PPC_OF)            += of_device.o prom_parse.o
 procfs-$(CONFIG_PPC64)          := proc_ppc64.o
 obj-$(CONFIG_PROC_FS)           += $(procfs-y)
 rtaspci-$(CONFIG_PPC64)         := rtas_pci.o
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index bf37ef2b3aac..03b25f9359f8 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -120,10 +120,12 @@ __start:
  * because OF may have I/O devices mapped into that area
  * (particularly on CHRP).
  */
+#ifdef CONFIG_PPC_MULTIPLATFORM
         cmpwi   0,r5,0
         beq     1f
         bl      prom_init
         trap
+#endif
 
 /*
  * Check for BootX signature when supporting PowerMac and branch to