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>

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 5692edb..427ae0f 100644 (file)
--- 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 a852b37..45b362f 100644 (file)
--- 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 bf37ef2..03b25f9 100644 (file)
--- 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