diff options
Diffstat (limited to 'arch/arm/mach-shmobile/smp-sh73a0.c')
| -rw-r--r-- | arch/arm/mach-shmobile/smp-sh73a0.c | 72 |
1 files changed, 15 insertions, 57 deletions
diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c index d5fc3ed4e315..0baa24443793 100644 --- a/arch/arm/mach-shmobile/smp-sh73a0.c +++ b/arch/arm/mach-shmobile/smp-sh73a0.c @@ -20,14 +20,11 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/smp.h> -#include <linux/spinlock.h> #include <linux/io.h> #include <linux/delay.h> #include <mach/common.h> -#include <asm/cacheflush.h> -#include <asm/smp_plat.h> #include <mach/sh73a0.h> -#include <asm/smp_scu.h> +#include <asm/smp_plat.h> #include <asm/smp_twd.h> #define WUPCR IOMEM(0xe6151010) @@ -36,8 +33,6 @@ #define SBAR IOMEM(0xe6180020) #define APARMBAREA IOMEM(0xe6f10020) -#define PSTR_SHUTDOWN_MODE 3 - #define SH73A0_SCU_BASE 0xf0000000 #ifdef CONFIG_HAVE_ARM_TWD @@ -50,69 +45,33 @@ void __init sh73a0_register_twd(void) static int sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle) { - cpu = cpu_logical_map(cpu); + unsigned int lcpu = cpu_logical_map(cpu); + int ret; - if (((__raw_readl(PSTR) >> (4 * cpu)) & 3) == 3) - __raw_writel(1 << cpu, WUPCR); /* wake up */ + ret = shmobile_smp_scu_boot_secondary(cpu, idle); + if (ret) + return ret; + + if (((__raw_readl(PSTR) >> (4 * lcpu)) & 3) == 3) + __raw_writel(1 << lcpu, WUPCR); /* wake up */ else - __raw_writel(1 << cpu, SRESCR); /* reset */ + __raw_writel(1 << lcpu, SRESCR); /* reset */ return 0; } static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus) { - scu_enable(shmobile_scu_base); - - /* Map the reset vector (in headsmp-scu.S, headsmp.S) */ + /* Map the reset vector (in headsmp.S) */ __raw_writel(0, APARMBAREA); /* 4k */ __raw_writel(__pa(shmobile_boot_vector), SBAR); - shmobile_boot_fn = virt_to_phys(shmobile_boot_scu); - shmobile_boot_arg = (unsigned long)shmobile_scu_base; - /* enable cache coherency on booting CPU */ - scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL); -} - -static void __init sh73a0_smp_init_cpus(void) -{ - /* setup sh73a0 specific SCU base */ + /* setup sh73a0 specific SCU bits */ shmobile_scu_base = IOMEM(SH73A0_SCU_BASE); - - shmobile_smp_init_cpus(scu_get_core_count(shmobile_scu_base)); + shmobile_smp_scu_prepare_cpus(max_cpus); } #ifdef CONFIG_HOTPLUG_CPU -static int sh73a0_cpu_kill(unsigned int cpu) -{ - - int k; - u32 pstr; - - /* - * wait until the power status register confirms the shutdown of the - * offline target - */ - for (k = 0; k < 1000; k++) { - pstr = (__raw_readl(PSTR) >> (4 * cpu)) & 3; - if (pstr == PSTR_SHUTDOWN_MODE) - return 1; - - mdelay(1); - } - - return 0; -} - -static void sh73a0_cpu_die(unsigned int cpu) -{ - /* Set power off mode. This takes the CPU out of the MP cluster */ - 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 */ @@ -120,12 +79,11 @@ static int sh73a0_cpu_disable(unsigned int cpu) #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_boot_secondary = sh73a0_boot_secondary, #ifdef CONFIG_HOTPLUG_CPU - .cpu_kill = sh73a0_cpu_kill, - .cpu_die = sh73a0_cpu_die, .cpu_disable = sh73a0_cpu_disable, + .cpu_die = shmobile_smp_scu_cpu_die, + .cpu_kill = shmobile_smp_scu_cpu_kill, #endif }; |