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Diffstat (limited to 'arch/arm/mach-shmobile/smp-sh73a0.c')
-rw-r--r--arch/arm/mach-shmobile/smp-sh73a0.c51
1 files changed, 16 insertions, 35 deletions
diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c
index acb46a94ccd..496592b6c76 100644
--- a/arch/arm/mach-shmobile/smp-sh73a0.c
+++ b/arch/arm/mach-shmobile/smp-sh73a0.c
@@ -23,7 +23,6 @@
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/delay.h>
-#include <linux/irqchip/arm-gic.h>
#include <mach/common.h>
#include <asm/cacheflush.h>
#include <asm/smp_plat.h>
@@ -39,31 +38,16 @@
#define PSTR_SHUTDOWN_MODE 3
-static void __iomem *scu_base_addr(void)
-{
- return (void __iomem *)0xf0000000;
-}
+#define SH73A0_SCU_BASE 0xf0000000
#ifdef CONFIG_HAVE_ARM_TWD
-static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29);
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, SH73A0_SCU_BASE + 0x600, 29);
void __init sh73a0_register_twd(void)
{
twd_local_timer_register(&twd_local_timer);
}
#endif
-static unsigned int __init sh73a0_get_core_count(void)
-{
- void __iomem *scu_base = scu_base_addr();
-
- return scu_get_core_count(scu_base);
-}
-
-static void __cpuinit sh73a0_secondary_init(unsigned int cpu)
-{
- gic_secondary_init(0);
-}
-
static int __cpuinit sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
cpu = cpu_logical_map(cpu);
@@ -78,21 +62,22 @@ static int __cpuinit sh73a0_boot_secondary(unsigned int cpu, struct task_struct
static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus)
{
- scu_enable(scu_base_addr());
+ scu_enable(shmobile_scu_base);
- /* Map the reset vector (in headsmp-sh73a0.S) */
+ /* Map the reset vector (in headsmp-scu.S) */
__raw_writel(0, APARMBAREA); /* 4k */
- __raw_writel(__pa(sh73a0_secondary_vector), SBAR);
+ __raw_writel(__pa(shmobile_secondary_vector_scu), SBAR);
/* enable cache coherency on booting CPU */
- scu_power_mode(scu_base_addr(), SCU_PM_NORMAL);
+ scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL);
}
static void __init sh73a0_smp_init_cpus(void)
{
- unsigned int ncores = sh73a0_get_core_count();
+ /* setup sh73a0 specific SCU base */
+ shmobile_scu_base = IOMEM(SH73A0_SCU_BASE);
- shmobile_smp_init_cpus(ncores);
+ shmobile_smp_init_cpus(scu_get_core_count(shmobile_scu_base));
}
#ifdef CONFIG_HOTPLUG_CPU
@@ -119,30 +104,26 @@ static int sh73a0_cpu_kill(unsigned int cpu)
static void sh73a0_cpu_die(unsigned int cpu)
{
- /*
- * The ARM MPcore does not issue a cache coherency request for the L1
- * cache when powering off single CPUs. We must take care of this and
- * further caches.
- */
- dsb();
- flush_cache_all();
-
/* Set power off mode. This takes the CPU out of the MP cluster */
- scu_power_mode(scu_base_addr(), SCU_PM_POWEROFF);
+ scu_power_mode(shmobile_scu_base, SCU_PM_POWEROFF);
/* Enter shutdown mode */
cpu_do_idle();
}
+
+static int sh73a0_cpu_disable(unsigned int cpu)
+{
+ return 0; /* CPU0 and CPU1 supported */
+}
#endif /* CONFIG_HOTPLUG_CPU */
struct smp_operations sh73a0_smp_ops __initdata = {
.smp_init_cpus = sh73a0_smp_init_cpus,
.smp_prepare_cpus = sh73a0_smp_prepare_cpus,
- .smp_secondary_init = sh73a0_secondary_init,
.smp_boot_secondary = sh73a0_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_kill = sh73a0_cpu_kill,
.cpu_die = sh73a0_cpu_die,
- .cpu_disable = shmobile_cpu_disable_any,
+ .cpu_disable = sh73a0_cpu_disable,
#endif
};