ARM: shmobile: Allow use of boot code for non-SMP case

Allow build of platsmp.c and headsmp.S even though
SMP is disabled in the kernel configuration. With
this in place it is possible to share the reset
vector setup code with power management code that
needs to be built even though SMP is disabled.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/mach-shmobile/Makefile

@@ -34,17 +34,17 @@ obj-$(CONFIG_ARCH_R8A7791)	+= clock-r8a7791.o
 obj-$(CONFIG_ARCH_R7S72100)	+= clock-r7s72100.o
 endif
 
+# CPU reset vector handling objects
+cpu-y				:= platsmp.o headsmp.o
+
 # SMP objects
-smp-y				:= platsmp.o headsmp.o
+smp-y				:= $(cpu-y)
 smp-$(CONFIG_ARCH_SH73A0)	+= smp-sh73a0.o headsmp-scu.o platsmp-scu.o
 smp-$(CONFIG_ARCH_R8A7779)	+= smp-r8a7779.o headsmp-scu.o platsmp-scu.o
 smp-$(CONFIG_ARCH_R8A7790)	+= smp-r8a7790.o platsmp-apmu.o
 smp-$(CONFIG_ARCH_R8A7791)	+= smp-r8a7791.o platsmp-apmu.o
 smp-$(CONFIG_ARCH_EMEV2)	+= smp-emev2.o headsmp-scu.o platsmp-scu.o
 
-# IRQ objects
-obj-$(CONFIG_ARCH_SH7372)	+= entry-intc.o
-
 # PM objects
 obj-$(CONFIG_SUSPEND)		+= suspend.o
 obj-$(CONFIG_CPU_IDLE)		+= cpuidle.o
@@ -55,6 +55,9 @@ obj-$(CONFIG_ARCH_R8A7779)	+= pm-r8a7779.o pm-rcar.o
 obj-$(CONFIG_ARCH_R8A7790)	+= pm-r8a7790.o pm-rcar.o
 obj-$(CONFIG_ARCH_R8A7791)	+= pm-r8a7791.o pm-rcar.o
 
+# IRQ objects
+obj-$(CONFIG_ARCH_SH7372)	+= entry-intc.o
+
 # Board objects
 ifdef CONFIG_ARCH_SHMOBILE_MULTI
 obj-$(CONFIG_MACH_GENMAI)	+= board-genmai-reference.o

arch/arm/mach-shmobile/headsmp.S

@@ -10,14 +10,17 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-#include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/linkage.h>
+#include <linux/threads.h>
 #include <asm/memory.h>
 
+#ifdef CONFIG_SMP
 ENTRY(shmobile_invalidate_start)
 	bl	v7_invalidate_l1
 	b	secondary_startup
 ENDPROC(shmobile_invalidate_start)
+#endif
 
 /*
  * Reset vector for secondary CPUs.
@@ -68,7 +71,7 @@ shmobile_smp_boot_find_mpidr:
 
 shmobile_smp_boot_next:
 	add	r1, r1, #1
-	cmp	r1, #CONFIG_NR_CPUS
+	cmp	r1, #NR_CPUS
 	blo	shmobile_smp_boot_find_mpidr
 
 	b	shmobile_smp_sleep
@@ -85,10 +88,10 @@ ENDPROC(shmobile_smp_sleep)
 
 	.globl	shmobile_smp_mpidr
 shmobile_smp_mpidr:
-1:	.space	CONFIG_NR_CPUS * 4
+1:	.space	NR_CPUS * 4
 	.globl	shmobile_smp_fn
 shmobile_smp_fn:
-2:	.space	CONFIG_NR_CPUS * 4
+2:	.space	NR_CPUS * 4
 	.globl	shmobile_smp_arg
 shmobile_smp_arg:
-3:	.space	CONFIG_NR_CPUS * 4
+3:	.space	NR_CPUS * 4