8 files changed, 83 insertions, 169 deletions

diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h
index f93d0a637016..96ed521f2408 100644
--- a/arch/arm/include/asm/smp.h
+++ b/arch/arm/include/asm/smp.h
@@ -45,10 +45,6 @@ asmlinkage void do_IPI(int ipinr, struct pt_regs *regs);
  */
 extern void smp_init_cpus(void);
 
-/*
- * Move global data into per-processor storage.
- */
-extern void smp_store_cpu_info(unsigned int cpuid);
 
 /*
  * Raise an IPI cross call on CPUs in callmap.
@@ -73,6 +69,11 @@ asmlinkage void secondary_start_kernel(void);
 extern void platform_secondary_init(unsigned int cpu);
 
 /*
+ * Initialize cpu_possible map, and enable coherency
+ */
+extern void platform_smp_prepare_cpus(unsigned int);
+
+/*
  * Initial data for bringing up a secondary CPU.
  */
 struct secondary_data {
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 64f2d198c764..c66f2d3f65d3 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -282,6 +282,17 @@ void __ref cpu_die(void)
 #endif /* CONFIG_HOTPLUG_CPU */
 
 /*
+ * Called by both boot and secondaries to move global data into
+ * per-processor storage.
+ */
+static void __cpuinit smp_store_cpu_info(unsigned int cpuid)
+{
+        struct cpuinfo_arm *cpu_info = &per_cpu(cpu_data, cpuid);
+
+        cpu_info->loops_per_jiffy = loops_per_jiffy;
+}
+
+/*
  * This is the secondary CPU boot entry.  We're using this CPUs
  * idle thread stack, but a set of temporary page tables.
  */
@@ -339,17 +350,6 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
         cpu_idle();
 }
 
-/*
- * Called by both boot and secondaries to move global data into
- * per-processor storage.
- */
-void __cpuinit smp_store_cpu_info(unsigned int cpuid)
-{
-        struct cpuinfo_arm *cpu_info = &per_cpu(cpu_data, cpuid);
-
-        cpu_info->loops_per_jiffy = loops_per_jiffy;
-}
-
 void __init smp_cpus_done(unsigned int max_cpus)
 {
         int cpu;
@@ -372,6 +372,33 @@ void __init smp_prepare_boot_cpu(void)
         per_cpu(cpu_data, cpu).idle = current;
 }
 
+void __init smp_prepare_cpus(unsigned int max_cpus)
+{
+        unsigned int ncores = num_possible_cpus();
+
+        smp_store_cpu_info(smp_processor_id());
+
+        /*
+         * are we trying to boot more cores than exist?
+         */
+        if (max_cpus > ncores)
+                max_cpus = ncores;
+
+        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();
+
+                /*
+                 * Initialise the SCU if there are more than one CPU
+                 * and let them know where to start.
+                 */
+                platform_smp_prepare_cpus(max_cpus);
+        }
+}
+
 void arch_send_call_function_ipi_mask(const struct cpumask *mask)
 {
         smp_cross_call(mask, IPI_CALL_FUNC);
diff --git a/arch/arm/mach-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c
index 405a8fc53308..3c3d6796c97c 100644
--- a/arch/arm/mach-omap2/omap-smp.c
+++ b/arch/arm/mach-omap2/omap-smp.c
@@ -21,7 +21,6 @@
 #include <linux/io.h>
 
 #include <asm/cacheflush.h>
-#include <asm/localtimer.h>
 #include <asm/smp_scu.h>
 #include <mach/hardware.h>
 #include <mach/omap4-common.h>
@@ -123,20 +122,10 @@ 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.
@@ -144,18 +133,10 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
         for (i = 0; i < max_cpus; i++)
                 set_cpu_present(i, true);
 
-        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();
-
-                /*
-                 * Initialise the SCU and wake up the secondary core using
-                 * wakeup_secondary().
-                 */
-                scu_enable(scu_base);
-                wakeup_secondary();
-        }
+        /*
+         * Initialise the SCU and wake up the secondary core using
+         * wakeup_secondary().
+         */
+        scu_enable(scu_base);
+        wakeup_secondary();
 }
diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c
index ef3cc86f5140..380562cd6580 100644
--- a/arch/arm/mach-realview/platsmp.c
+++ b/arch/arm/mach-realview/platsmp.c
@@ -19,7 +19,6 @@
 #include <asm/cacheflush.h>
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
-#include <asm/localtimer.h>
 #include <asm/unified.h>
 
 #include <mach/board-eb.h>
@@ -147,20 +146,10 @@ 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.
@@ -168,22 +157,14 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
         for (i = 0; i < max_cpus; i++)
                 set_cpu_present(i, true);
 
-        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 BootMonitor waits
-                 * until it receives a soft interrupt, and then the
-                 * secondary CPU branches to this address.
-                 */
-                __raw_writel(BSYM(virt_to_phys(realview_secondary_startup)),
-                             __io_address(REALVIEW_SYS_FLAGSSET));
-        }
+        scu_enable(scu_base_addr());
+
+        /*
+         * Write the address of secondary startup into the
+         * system-wide flags register. The BootMonitor waits
+         * until it receives a soft interrupt, and then the
+         * secondary CPU branches to this address.
+         */
+        __raw_writel(BSYM(virt_to_phys(realview_secondary_startup)),
+                     __io_address(REALVIEW_SYS_FLAGSSET));
 }
diff --git a/arch/arm/mach-s5pv310/platsmp.c b/arch/arm/mach-s5pv310/platsmp.c
index 560ada83b0b1..51c44d4c9890 100644
--- a/arch/arm/mach-s5pv310/platsmp.c
+++ b/arch/arm/mach-s5pv310/platsmp.c
@@ -22,7 +22,6 @@
 #include <linux/io.h>
 
 #include <asm/cacheflush.h>
-#include <asm/localtimer.h>
 #include <asm/smp_scu.h>
 #include <asm/unified.h>
 
@@ -142,18 +141,10 @@ 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.
@@ -161,25 +152,13 @@ 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.
-                 */
         __raw_writel(BSYM(virt_to_phys(s5pv310_secondary_startup)), S5P_VA_SYSRAM);
-        }
 }
diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c
index 66d0634e7a96..b66a0c2d990d 100644
--- a/arch/arm/mach-tegra/platsmp.c
+++ b/arch/arm/mach-tegra/platsmp.c
@@ -22,7 +22,6 @@
 #include <asm/cacheflush.h>
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
-#include <asm/localtimer.h>
 #include <asm/smp_scu.h>
 
 #include <mach/iomap.h>
@@ -127,20 +126,10 @@ void __init smp_init_cpus(void)
                 cpu_set(i, cpu_possible_map);
 }
 
-void __init smp_prepare_cpus(unsigned int max_cpus)
+void __init platform_smp_prepare_cpus(unsigned int max_cpus)
 {
-        unsigned int ncores = scu_get_core_count(scu_base);
-        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.
@@ -148,8 +137,5 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
         for (i = 0; i < max_cpus; i++)
                 set_cpu_present(i, true);
 
-        if (max_cpus > 1) {
-                percpu_timer_setup();
-                scu_enable(scu_base);
-        }
+        scu_enable(scu_base);
 }
diff --git a/arch/arm/mach-ux500/platsmp.c b/arch/arm/mach-ux500/platsmp.c
index fd40fa175913..458a288981cb 100644
--- a/arch/arm/mach-ux500/platsmp.c
+++ b/arch/arm/mach-ux500/platsmp.c
@@ -18,7 +18,6 @@
 #include <linux/io.h>
 
 #include <asm/cacheflush.h>
-#include <asm/localtimer.h>
 #include <asm/smp_scu.h>
 #include <mach/hardware.h>
 
@@ -138,20 +137,10 @@ 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.
@@ -159,13 +148,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
         for (i = 0; i < max_cpus; i++)
                 set_cpu_present(i, true);
 
-        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(__io_address(UX500_SCU_BASE));
-                wakeup_secondary();
-        }
+        scu_enable(__io_address(UX500_SCU_BASE));
+        wakeup_secondary();
 }
diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c
index b5a758683668..a0341d14ff2a 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));
 }