ARM: SMP: consolidate the common parts of smp_prepare_cpus()

There is a certain amount of smp_prepare_cpus() which doesn't belong
in the platform support code - that is, code which is invariant to the
SMP implementation.  Move this code into arch/arm/kernel/smp.c, and
add a platform_ prefix to the original function.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 10 insertions, 33 deletions

diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c
index b5a7586..a0341d1 100644
--- a/arch/arm/mach-vexpress/platsmp.c
+++ b/arch/arm/mach-vexpress/platsmp.c
@@ -17,7 +17,6 @@
 #include <linux/io.h>
 
 #include <asm/cacheflush.h>
-#include <asm/localtimer.h>
 #include <asm/smp_scu.h>
 #include <asm/unified.h>
 
@@ -136,20 +135,10 @@ void __init smp_init_cpus(void)
 		set_cpu_possible(i, true);
 }
 
-void __init smp_prepare_cpus(unsigned int max_cpus)
+void __init platform_smp_prepare_cpus(unsigned int max_cpus)
 {
-	unsigned int ncores = num_possible_cpus();
-	unsigned int cpu = smp_processor_id();
 	int i;
 
-	smp_store_cpu_info(cpu);
-
-	/*
-	 * are we trying to boot more cores than exist?
-	 */
-	if (max_cpus > ncores)
-		max_cpus = ncores;
-
 	/*
 	 * Initialise the present map, which describes the set of CPUs
 	 * actually populated at the present time.
@@ -157,27 +146,15 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 	for (i = 0; i < max_cpus; i++)
 		set_cpu_present(i, true);
 
+	scu_enable(scu_base_addr());
+
 	/*
-	 * Initialise the SCU if there are more than one CPU and let
-	 * them know where to start.
+	 * Write the address of secondary startup into the
+	 * system-wide flags register. The boot monitor waits
+	 * until it receives a soft interrupt, and then the
+	 * secondary CPU branches to this address.
 	 */
-	if (max_cpus > 1) {
-		/*
-		 * Enable the local timer or broadcast device for the
-		 * boot CPU, but only if we have more than one CPU.
-		 */
-		percpu_timer_setup();
-
-		scu_enable(scu_base_addr());
-
-		/*
-		 * Write the address of secondary startup into the
-		 * system-wide flags register. The boot monitor waits
-		 * until it receives a soft interrupt, and then the
-		 * secondary CPU branches to this address.
-		 */
-		writel(~0, MMIO_P2V(V2M_SYS_FLAGSCLR));
-		writel(BSYM(virt_to_phys(vexpress_secondary_startup)),
-			MMIO_P2V(V2M_SYS_FLAGSSET));
-	}
+	writel(~0, MMIO_P2V(V2M_SYS_FLAGSCLR));
+	writel(BSYM(virt_to_phys(vexpress_secondary_startup)),
+		MMIO_P2V(V2M_SYS_FLAGSSET));
 }