diff options
| -rw-r--r-- | arch/arm/mach-omap2/Makefile | 4 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/common.h | 6 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/io.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap-mpuss-lowpower.c | 29 |
4 files changed, 32 insertions, 8 deletions
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 04e276ce8413..cd820f5df028 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -8,7 +8,7 @@ ccflags-y := -I$(srctree)/$(src)/include \ # Common support obj-y := id.o io.o control.o mux.o devices.o fb.o serial.o timer.o pm.o \ common.o gpio.o dma.o wd_timer.o display.o i2c.o hdq1w.o omap_hwmod.o \ - omap_device.o sram.o drm.o + omap_device.o omap-headsmp.o sram.o drm.o hwmod-common = omap_hwmod.o omap_hwmod_reset.o \ omap_hwmod_common_data.o @@ -32,7 +32,7 @@ obj-$(CONFIG_SOC_HAS_OMAP2_SDRC) += sdrc.o # SMP support ONLY available for OMAP4 -smp-$(CONFIG_SMP) += omap-smp.o omap-headsmp.o +smp-$(CONFIG_SMP) += omap-smp.o smp-$(CONFIG_HOTPLUG_CPU) += omap-hotplug.o omap-4-5-common = omap4-common.o omap-wakeupgen.o obj-$(CONFIG_ARCH_OMAP4) += $(omap-4-5-common) $(smp-y) sleep44xx.o diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h index 9cbae6e059a3..0136405a465f 100644 --- a/arch/arm/mach-omap2/common.h +++ b/arch/arm/mach-omap2/common.h @@ -259,12 +259,14 @@ extern void gic_timer_retrigger(void); extern void omap_smc1(u32 fn, u32 arg); extern void omap4_sar_ram_init(void); extern void __iomem *omap4_get_sar_ram_base(void); +extern void omap4_mpuss_early_init(void); extern void omap_do_wfi(void); -#ifdef CONFIG_SMP -/* Needed for secondary core boot */ extern void omap4_secondary_startup(void); extern void omap4460_secondary_startup(void); + +#ifdef CONFIG_SMP +/* Needed for secondary core boot */ extern u32 omap_modify_auxcoreboot0(u32 set_mask, u32 clear_mask); extern void omap_auxcoreboot_addr(u32 cpu_addr); extern u32 omap_read_auxcoreboot0(void); diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c index 4548cb9f673e..0e9acdd95d70 100644 --- a/arch/arm/mach-omap2/io.c +++ b/arch/arm/mach-omap2/io.c @@ -691,6 +691,7 @@ void __init omap4430_init_early(void) omap4xxx_check_features(); omap2_prcm_base_init(); omap4_sar_ram_init(); + omap4_mpuss_early_init(); omap4_pm_init_early(); omap44xx_voltagedomains_init(); omap44xx_powerdomains_init(); diff --git a/arch/arm/mach-omap2/omap-mpuss-lowpower.c b/arch/arm/mach-omap2/omap-mpuss-lowpower.c index 65024af169d3..17515179e6ae 100644 --- a/arch/arm/mach-omap2/omap-mpuss-lowpower.c +++ b/arch/arm/mach-omap2/omap-mpuss-lowpower.c @@ -62,6 +62,8 @@ #include "prm44xx.h" #include "prm-regbits-44xx.h" +static void __iomem *sar_base; + #ifdef CONFIG_SMP struct omap4_cpu_pm_info { @@ -90,7 +92,6 @@ struct cpu_pm_ops { static DEFINE_PER_CPU(struct omap4_cpu_pm_info, omap4_pm_info); static struct powerdomain *mpuss_pd; -static void __iomem *sar_base; static u32 cpu_context_offset; static int default_finish_suspend(unsigned long cpu_state) @@ -366,9 +367,6 @@ int __init omap4_mpuss_init(void) return -ENODEV; } - if (cpu_is_omap44xx()) - sar_base = omap4_get_sar_ram_base(); - /* Initilaise per CPU PM information */ pm_info = &per_cpu(omap4_pm_info, 0x0); if (sar_base) { @@ -444,3 +442,26 @@ int __init omap4_mpuss_init(void) } #endif + +/* + * For kexec, we must set CPU1_WAKEUP_NS_PA_ADDR to point to + * current kernel's secondary_startup() early before + * clockdomains_init(). Otherwise clockdomain_init() can + * wake CPU1 and cause a hang. + */ +void __init omap4_mpuss_early_init(void) +{ + unsigned long startup_pa; + + if (!cpu_is_omap44xx()) + return; + + sar_base = omap4_get_sar_ram_base(); + + if (cpu_is_omap443x()) + startup_pa = virt_to_phys(omap4_secondary_startup); + else + startup_pa = virt_to_phys(omap4460_secondary_startup); + + writel_relaxed(startup_pa, sar_base + CPU1_WAKEUP_NS_PA_ADDR_OFFSET); +} |