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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-11-01 13:16:26 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-11-21 09:47:48 +0000
commite879c862fb81b986095ae7a4676b2281c2f97957 (patch)
treebd7793e9e9924ff4b5826d14267125e8dc22afdd /arch/arm
parent5aafec15bdc54cf0722696c95091d7bd674bfcad (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/arm')
-rw-r--r--arch/arm/include/asm/system.h1
-rw-r--r--arch/arm/kernel/process.c13
-rw-r--r--arch/arm/mach-clps711x/include/mach/system.h2
-rw-r--r--arch/arm/mach-ebsa110/include/mach/system.h2
-rw-r--r--arch/arm/mach-footbridge/include/mach/system.h2
-rw-r--r--arch/arm/mach-iop32x/include/mach/system.h2
-rw-r--r--arch/arm/mach-iop33x/include/mach/system.h2
-rw-r--r--arch/arm/mach-ixp4xx/include/mach/system.h2
-rw-r--r--arch/arm/mach-ks8695/include/mach/system.h2
-rw-r--r--arch/arm/mach-mmp/include/mach/system.h4
-rw-r--r--arch/arm/mach-mxs/system.c2
-rw-r--r--arch/arm/mach-pnx4008/include/mach/system.h2
-rw-r--r--arch/arm/mach-pxa/reset.c2
-rw-r--r--arch/arm/mach-rpc/include/mach/system.h2
-rw-r--r--arch/arm/mach-s3c2410/include/mach/system-reset.h4
-rw-r--r--arch/arm/mach-s3c64xx/include/mach/system.h2
-rw-r--r--arch/arm/mach-sa1100/include/mach/system.h2
-rw-r--r--arch/arm/mach-shmobile/include/mach/system.h2
-rw-r--r--arch/arm/mach-w90x900/include/mach/system.h2
-rw-r--r--arch/arm/plat-mxc/system.c2
-rw-r--r--arch/arm/plat-spear/include/plat/system.h2
21 files changed, 33 insertions, 23 deletions
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 984014b9264..fe7de7571ba 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 4181738452f..1e8b3e2de7a 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 f916cd7a477..6c119937d39 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 9a26245bf1f..0d5df72a03f 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 0b293156620..249f895910f 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 a4b808fe0d8..4865a9bff85 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 f192a34be07..86d1b20dd69 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 54c0af7fa2d..24337d9d275 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 fb1dda9be2d..ceb19c90aa5 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 1a8a25edb1b..cb0637933a8 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 20ec3bddf7c..cab88364e7c 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 5dda2bb55f8..5d6384a6128 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 01e9d643394..b8bcda15da8 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 45c7b935dc4..a354f4d092c 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 6faadcee772..913893d4465 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 2e58cb7a714..d8ca5786ba2 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 ba9da9f7f18..345d35b7450 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 76a687eeaa2..956ac18ddbf 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 ce228bdc66d..68875a1c16b 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 9dad8dcc2ea..b1cfc6a4971 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 a235fa0ca77..1171f228d71 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);