diff options
author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-11-01 13:16:26 +0000 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-11-21 09:47:48 +0000 |
commit | e879c862fb81b986095ae7a4676b2281c2f97957 (patch) | |
tree | bd7793e9e9924ff4b5826d14267125e8dc22afdd /arch | |
parent | 5aafec15bdc54cf0722696c95091d7bd674bfcad (diff) |
ARM: restart: only perform setup for restart when soft-restarting
We only need to set the system up for a soft-restart if we're going to
be doing a soft-restart. Provide a new function (soft_restart()) which
does the setup and final call for this, and make platforms use it.
Eliminate the call to setup_restart() from the default handler.
This means that platforms arch_reset() function is no longer called with
the page tables prepared for a soft-restart, and caches will still be
enabled.
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Viresh Kumar <viresh.kumar@st.com>
Acked-by: Krzysztof Ha■asa <khc@pm.waw.pl>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Acked-by: Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
21 files changed, 33 insertions, 23 deletions
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h index 984014b92647..fe7de7571bac 100644 --- a/arch/arm/include/asm/system.h +++ b/arch/arm/include/asm/system.h @@ -101,6 +101,7 @@ extern int __pure cpu_architecture(void); extern void cpu_init(void); void arm_machine_restart(char mode, const char *cmd); +void soft_restart(unsigned long); extern void (*arm_pm_restart)(char str, const char *cmd); #define UDBG_UNDEFINED (1 << 0) diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 4181738452fc..1e8b3e2de7a3 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -92,7 +92,7 @@ static int __init hlt_setup(char *__unused) __setup("nohlt", nohlt_setup); __setup("hlt", hlt_setup); -void arm_machine_restart(char mode, const char *cmd) +void soft_restart(unsigned long addr) { /* Disable interrupts first */ local_irq_disable(); @@ -114,7 +114,16 @@ void arm_machine_restart(char mode, const char *cmd) /* Push out any further dirty data, and ensure cache is empty */ flush_cache_all(); - /* Now call the architecture specific reboot code. */ + cpu_reset(addr); +} + +void arm_machine_restart(char mode, const char *cmd) +{ + /* Disable interrupts first */ + local_irq_disable(); + local_fiq_disable(); + + /* Call the architecture specific reboot code. */ arch_reset(mode, cmd); } diff --git a/arch/arm/mach-clps711x/include/mach/system.h b/arch/arm/mach-clps711x/include/mach/system.h index f916cd7a477d..6c119937d398 100644 --- a/arch/arm/mach-clps711x/include/mach/system.h +++ b/arch/arm/mach-clps711x/include/mach/system.h @@ -34,7 +34,7 @@ static inline void arch_idle(void) static inline void arch_reset(char mode, const char *cmd) { - cpu_reset(0); + soft_restart(0); } #endif diff --git a/arch/arm/mach-ebsa110/include/mach/system.h b/arch/arm/mach-ebsa110/include/mach/system.h index 9a26245bf1fc..0d5df72a03f6 100644 --- a/arch/arm/mach-ebsa110/include/mach/system.h +++ b/arch/arm/mach-ebsa110/include/mach/system.h @@ -34,6 +34,6 @@ static inline void arch_idle(void) asm volatile ("mcr p15, 0, ip, c15, c1, 2" : : : "cc"); } -#define arch_reset(mode, cmd) cpu_reset(0x80000000) +#define arch_reset(mode, cmd) soft_restart(0x80000000) #endif diff --git a/arch/arm/mach-footbridge/include/mach/system.h b/arch/arm/mach-footbridge/include/mach/system.h index 0b2931566209..249f895910fb 100644 --- a/arch/arm/mach-footbridge/include/mach/system.h +++ b/arch/arm/mach-footbridge/include/mach/system.h @@ -24,7 +24,7 @@ static inline void arch_reset(char mode, const char *cmd) /* * Jump into the ROM */ - cpu_reset(0x41000000); + soft_restart(0x41000000); } else { if (machine_is_netwinder()) { /* open up the SuperIO chip diff --git a/arch/arm/mach-iop32x/include/mach/system.h b/arch/arm/mach-iop32x/include/mach/system.h index a4b808fe0d81..4865a9bff85e 100644 --- a/arch/arm/mach-iop32x/include/mach/system.h +++ b/arch/arm/mach-iop32x/include/mach/system.h @@ -30,5 +30,5 @@ static inline void arch_reset(char mode, const char *cmd) *IOP3XX_PCSR = 0x30; /* Jump into ROM at address 0 */ - cpu_reset(0); + soft_restart(0); } diff --git a/arch/arm/mach-iop33x/include/mach/system.h b/arch/arm/mach-iop33x/include/mach/system.h index f192a34be073..86d1b20dd692 100644 --- a/arch/arm/mach-iop33x/include/mach/system.h +++ b/arch/arm/mach-iop33x/include/mach/system.h @@ -19,5 +19,5 @@ static inline void arch_reset(char mode, const char *cmd) *IOP3XX_PCSR = 0x30; /* Jump into ROM at address 0 */ - cpu_reset(0); + soft_restart(0); } diff --git a/arch/arm/mach-ixp4xx/include/mach/system.h b/arch/arm/mach-ixp4xx/include/mach/system.h index 54c0af7fa2d4..24337d9d275b 100644 --- a/arch/arm/mach-ixp4xx/include/mach/system.h +++ b/arch/arm/mach-ixp4xx/include/mach/system.h @@ -26,7 +26,7 @@ static inline void arch_reset(char mode, const char *cmd) { if ( 1 && mode == 's') { /* Jump into ROM at address 0 */ - cpu_reset(0); + soft_restart(0); } else { /* Use on-chip reset capability */ diff --git a/arch/arm/mach-ks8695/include/mach/system.h b/arch/arm/mach-ks8695/include/mach/system.h index fb1dda9be2d0..ceb19c90aa52 100644 --- a/arch/arm/mach-ks8695/include/mach/system.h +++ b/arch/arm/mach-ks8695/include/mach/system.h @@ -32,7 +32,7 @@ static void arch_reset(char mode, const char *cmd) unsigned int reg; if (mode == 's') - cpu_reset(0); + soft_restart(0); /* disable timer0 */ reg = __raw_readl(KS8695_TMR_VA + KS8695_TMCON); diff --git a/arch/arm/mach-mmp/include/mach/system.h b/arch/arm/mach-mmp/include/mach/system.h index 1a8a25edb1b4..cb0637933a85 100644 --- a/arch/arm/mach-mmp/include/mach/system.h +++ b/arch/arm/mach-mmp/include/mach/system.h @@ -19,8 +19,8 @@ static inline void arch_idle(void) static inline void arch_reset(char mode, const char *cmd) { if (cpu_is_pxa168()) - cpu_reset(0xffff0000); + soft_restart(0xffff0000); else - cpu_reset(0); + soft_restart(0); } #endif /* __ASM_MACH_SYSTEM_H */ diff --git a/arch/arm/mach-mxs/system.c b/arch/arm/mach-mxs/system.c index 20ec3bddf7cd..cab88364e7c1 100644 --- a/arch/arm/mach-mxs/system.c +++ b/arch/arm/mach-mxs/system.c @@ -53,7 +53,7 @@ void arch_reset(char mode, const char *cmd) mdelay(50); /* We'll take a jump through zero as a poor second */ - cpu_reset(0); + soft_restart(0); } static int __init mxs_arch_reset_init(void) diff --git a/arch/arm/mach-pnx4008/include/mach/system.h b/arch/arm/mach-pnx4008/include/mach/system.h index 5dda2bb55f8d..5d6384a6128c 100644 --- a/arch/arm/mach-pnx4008/include/mach/system.h +++ b/arch/arm/mach-pnx4008/include/mach/system.h @@ -32,7 +32,7 @@ static void arch_idle(void) static inline void arch_reset(char mode, const char *cmd) { - cpu_reset(0); + soft_restart(0); } #endif diff --git a/arch/arm/mach-pxa/reset.c b/arch/arm/mach-pxa/reset.c index 01e9d643394a..b8bcda15da81 100644 --- a/arch/arm/mach-pxa/reset.c +++ b/arch/arm/mach-pxa/reset.c @@ -88,7 +88,7 @@ void arch_reset(char mode, const char *cmd) switch (mode) { case 's': /* Jump into ROM at address 0 */ - cpu_reset(0); + soft_restart(0); break; case 'g': do_gpio_reset(); diff --git a/arch/arm/mach-rpc/include/mach/system.h b/arch/arm/mach-rpc/include/mach/system.h index 45c7b935dc45..a354f4d092c8 100644 --- a/arch/arm/mach-rpc/include/mach/system.h +++ b/arch/arm/mach-rpc/include/mach/system.h @@ -23,5 +23,5 @@ static inline void arch_reset(char mode, const char *cmd) /* * Jump into the ROM */ - cpu_reset(0); + soft_restart(0); } diff --git a/arch/arm/mach-s3c2410/include/mach/system-reset.h b/arch/arm/mach-s3c2410/include/mach/system-reset.h index 6faadcee7729..913893d44650 100644 --- a/arch/arm/mach-s3c2410/include/mach/system-reset.h +++ b/arch/arm/mach-s3c2410/include/mach/system-reset.h @@ -19,7 +19,7 @@ static void arch_reset(char mode, const char *cmd) { if (mode == 's') { - cpu_reset(0); + soft_restart(0); } if (s3c24xx_reset_hook) @@ -28,5 +28,5 @@ arch_reset(char mode, const char *cmd) arch_wdt_reset(); /* we'll take a jump through zero as a poor second */ - cpu_reset(0); + soft_restart(0); } diff --git a/arch/arm/mach-s3c64xx/include/mach/system.h b/arch/arm/mach-s3c64xx/include/mach/system.h index 2e58cb7a7147..d8ca5786ba25 100644 --- a/arch/arm/mach-s3c64xx/include/mach/system.h +++ b/arch/arm/mach-s3c64xx/include/mach/system.h @@ -24,7 +24,7 @@ static void arch_reset(char mode, const char *cmd) arch_wdt_reset(); /* if all else fails, or mode was for soft, jump to 0 */ - cpu_reset(0); + soft_restart(0); } #endif /* __ASM_ARCH_IRQ_H */ diff --git a/arch/arm/mach-sa1100/include/mach/system.h b/arch/arm/mach-sa1100/include/mach/system.h index ba9da9f7f183..345d35b7450c 100644 --- a/arch/arm/mach-sa1100/include/mach/system.h +++ b/arch/arm/mach-sa1100/include/mach/system.h @@ -14,7 +14,7 @@ static inline void arch_reset(char mode, const char *cmd) { if (mode == 's') { /* Jump into ROM at address 0 */ - cpu_reset(0); + soft_restart(0); } else { /* Use on-chip reset capability */ RSRR = RSRR_SWR; diff --git a/arch/arm/mach-shmobile/include/mach/system.h b/arch/arm/mach-shmobile/include/mach/system.h index 76a687eeaa22..956ac18ddbf9 100644 --- a/arch/arm/mach-shmobile/include/mach/system.h +++ b/arch/arm/mach-shmobile/include/mach/system.h @@ -8,7 +8,7 @@ static inline void arch_idle(void) static inline void arch_reset(char mode, const char *cmd) { - cpu_reset(0); + soft_restart(0); } #endif diff --git a/arch/arm/mach-w90x900/include/mach/system.h b/arch/arm/mach-w90x900/include/mach/system.h index ce228bdc66dd..68875a1c16be 100644 --- a/arch/arm/mach-w90x900/include/mach/system.h +++ b/arch/arm/mach-w90x900/include/mach/system.h @@ -33,7 +33,7 @@ static void arch_reset(char mode, const char *cmd) { if (mode == 's') { /* Jump into ROM at address 0 */ - cpu_reset(0); + soft_restart(0); } else { __raw_writel(WTE | WTRE | WTCLK, WTCR); } diff --git a/arch/arm/plat-mxc/system.c b/arch/arm/plat-mxc/system.c index 9dad8dcc2ea9..b1cfc6a49715 100644 --- a/arch/arm/plat-mxc/system.c +++ b/arch/arm/plat-mxc/system.c @@ -70,7 +70,7 @@ void arch_reset(char mode, const char *cmd) mdelay(50); /* we'll take a jump through zero as a poor second */ - cpu_reset(0); + soft_restart(0); } void mxc_arch_reset_init(void __iomem *base) diff --git a/arch/arm/plat-spear/include/plat/system.h b/arch/arm/plat-spear/include/plat/system.h index a235fa0ca777..1171f228d718 100644 --- a/arch/arm/plat-spear/include/plat/system.h +++ b/arch/arm/plat-spear/include/plat/system.h @@ -31,7 +31,7 @@ static inline void arch_reset(char mode, const char *cmd) { if (mode == 's') { /* software reset, Jump into ROM at address 0 */ - cpu_reset(0); + soft_restart(0); } else { /* hardware reset, Use on-chip reset capability */ sysctl_soft_reset((void __iomem *)VA_SPEAR_SYS_CTRL_BASE); |