31 files changed, 64 insertions, 47 deletions

diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
index 2b0efc3104ac..bcb0c883e21e 100644
--- a/arch/arm/include/asm/mach/arch.h
+++ b/arch/arm/include/asm/mach/arch.h
@@ -31,10 +31,10 @@ struct machine_desc {
         unsigned int            video_start;    /* start of video RAM   */
         unsigned int            video_end;      /* end of video RAM     */
 
-        unsigned int            reserve_lp0 :1; /* never has lp0        */
-        unsigned int            reserve_lp1 :1; /* never has lp1        */
-        unsigned int            reserve_lp2 :1; /* never has lp2        */
-        unsigned int            soft_reboot :1; /* soft reboot          */
+        unsigned char           reserve_lp0 :1; /* never has lp0        */
+        unsigned char           reserve_lp1 :1; /* never has lp1        */
+        unsigned char           reserve_lp2 :1; /* never has lp2        */
+        char                    restart_mode;   /* default restart mode */
         void                    (*fixup)(struct tag *, char **,
                                          struct meminfo *);
         void                    (*reserve)(void);/* reserve mem blocks  */
@@ -46,6 +46,7 @@ struct machine_desc {
 #ifdef CONFIG_MULTI_IRQ_HANDLER
         void                    (*handle_irq)(struct pt_regs *);
 #endif
+        void                    (*restart)(char, const char *);
 };
 
 /*
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/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index e59bbd496c39..29620b632ed9 100644
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -16,7 +16,7 @@
 extern const unsigned char relocate_new_kernel[];
 extern const unsigned int relocate_new_kernel_size;
 
-extern void setup_mm_for_reboot(char mode);
+extern void setup_mm_for_reboot(void);
 
 extern unsigned long kexec_start_address;
 extern unsigned long kexec_indirection_page;
@@ -113,7 +113,7 @@ void machine_kexec(struct kimage *image)
                 kexec_reinit();
         local_irq_disable();
         local_fiq_disable();
-        setup_mm_for_reboot(0); /* mode is not used, so just pass 0*/
+        setup_mm_for_reboot();
         flush_cache_all();
         outer_flush_all();
         outer_disable();
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 3d0c6fb74ae4..eeb3e16c6046 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -57,7 +57,7 @@ static const char *isa_modes[] = {
   "ARM" , "Thumb" , "Jazelle", "ThumbEE"
 };
 
-extern void setup_mm_for_reboot(char mode);
+extern void setup_mm_for_reboot(void);
 
 static volatile int hlt_counter;
 
@@ -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();
@@ -103,7 +103,7 @@ void arm_machine_restart(char mode, const char *cmd)
          * we may need it to insert some 1:1 mappings so that
          * soft boot works.
          */
-        setup_mm_for_reboot(mode);
+        setup_mm_for_reboot();
 
         /* Clean and invalidate caches */
         flush_cache_all();
@@ -114,18 +114,17 @@ 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.
-         */
-        arch_reset(mode, cmd);
+        cpu_reset(addr);
+}
 
-        /*
-         * Whoops - the architecture was unable to reboot.
-         * Tell the user!
-         */
-        mdelay(1000);
-        printk("Reboot failed -- System halted\n");
-        while (1);
+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);
 }
 
 /*
@@ -253,7 +252,15 @@ void machine_power_off(void)
 void machine_restart(char *cmd)
 {
         machine_shutdown();
+
         arm_pm_restart(reboot_mode, cmd);
+
+        /* Give a grace period for failure to restart of 1s */
+        mdelay(1000);
+
+        /* Whoops - the platform was unable to reboot. Tell the user! */
+        printk("Reboot failed -- System halted\n");
+        while (1);
 }
 
 void __show_regs(struct pt_regs *regs)
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 8fc2c8fcbdc6..8b13930cdb0a 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -908,8 +908,8 @@ void __init setup_arch(char **cmdline_p)
                 arm_dma_zone_size = mdesc->dma_zone_size;
         }
 #endif
-        if (mdesc->soft_reboot)
-                reboot_setup("s");
+        if (mdesc->restart_mode)
+                reboot_setup(&mdesc->restart_mode);
 
         init_mm.start_code = (unsigned long) _text;
         init_mm.end_code   = (unsigned long) _etext;
@@ -928,6 +928,9 @@ void __init setup_arch(char **cmdline_p)
         paging_init(mdesc);
         request_standard_resources(mdesc);
 
+        if (mdesc->restart)
+                arm_pm_restart = mdesc->restart;
+
         unflatten_device_tree();
 
 #ifdef CONFIG_SMP
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/core.c b/arch/arm/mach-ebsa110/core.c
index d0ce8abdd4b6..ce3ed244c4b0 100644
--- a/arch/arm/mach-ebsa110/core.c
+++ b/arch/arm/mach-ebsa110/core.c
@@ -283,7 +283,7 @@ MACHINE_START(EBSA110, "EBSA110")
         .atag_offset    = 0x400,
         .reserve_lp0    = 1,
         .reserve_lp2    = 1,
-        .soft_reboot    = 1,
+        .restart_mode   = 's',
         .map_io         = ebsa110_map_io,
         .init_irq       = ebsa110_init_irq,
         .timer          = &ebsa110_timer,
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/cats-hw.c b/arch/arm/mach-footbridge/cats-hw.c
index d5f178540928..60b6774e1eaa 100644
--- a/arch/arm/mach-footbridge/cats-hw.c
+++ b/arch/arm/mach-footbridge/cats-hw.c
@@ -86,7 +86,7 @@ fixup_cats(struct tag *tags, char **cmdline, struct meminfo *mi)
 MACHINE_START(CATS, "Chalice-CATS")
         /* Maintainer: Philip Blundell */
         .atag_offset    = 0x100,
-        .soft_reboot    = 1,
+        .restart_mode   = 's',
         .fixup          = fixup_cats,
         .map_io         = footbridge_map_io,
         .init_irq       = footbridge_init_irq,
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 5987196b89c4..b4f83e5973b2 100644
--- a/arch/arm/mach-iop32x/include/mach/system.h
+++ b/arch/arm/mach-iop32x/include/mach/system.h
@@ -28,5 +28,5 @@ 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/mioa701.c b/arch/arm/mach-pxa/mioa701.c
index b938fc2c316a..4f47a760398f 100644
--- a/arch/arm/mach-pxa/mioa701.c
+++ b/arch/arm/mach-pxa/mioa701.c
@@ -752,6 +752,7 @@ static void mioa701_machine_exit(void)
 
 MACHINE_START(MIOA701, "MIO A701")
         .atag_offset    = 0x100,
+        .restart_mode   = 's',
         .map_io         = &pxa27x_map_io,
         .init_irq       = &pxa27x_init_irq,
         .handle_irq     = &pxa27x_handle_irq,
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-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index 953a9195f9e5..2f57d94de727 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -982,6 +982,7 @@ static void __init spitz_fixup(struct tag *tags, char **cmdline,
 
 #ifdef CONFIG_MACH_SPITZ
 MACHINE_START(SPITZ, "SHARP Spitz")
+        .restart_mode   = 'g',
         .fixup          = spitz_fixup,
         .map_io         = pxa27x_map_io,
         .init_irq       = pxa27x_init_irq,
@@ -993,6 +994,7 @@ MACHINE_END
 
 #ifdef CONFIG_MACH_BORZOI
 MACHINE_START(BORZOI, "SHARP Borzoi")
+        .restart_mode   = 'g',
         .fixup          = spitz_fixup,
         .map_io         = pxa27x_map_io,
         .init_irq       = pxa27x_init_irq,
@@ -1004,6 +1006,7 @@ MACHINE_END
 
 #ifdef CONFIG_MACH_AKITA
 MACHINE_START(AKITA, "SHARP Akita")
+        .restart_mode   = 'g',
         .fixup          = spitz_fixup,
         .map_io         = pxa27x_map_io,
         .init_irq       = pxa27x_init_irq,
diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c
index 402b0c96613b..ef6453041cf1 100644
--- a/arch/arm/mach-pxa/tosa.c
+++ b/arch/arm/mach-pxa/tosa.c
@@ -970,6 +970,7 @@ static void __init fixup_tosa(struct tag *tags, char **cmdline,
 }
 
 MACHINE_START(TOSA, "SHARP Tosa")
+        .restart_mode   = 'g',
         .fixup          = fixup_tosa,
         .map_io         = pxa25x_map_io,
         .nr_irqs        = TOSA_NR_IRQS,
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/mm/idmap.c b/arch/arm/mm/idmap.c
index 2be9139a4ef3..296ad2eaddb0 100644
--- a/arch/arm/mm/idmap.c
+++ b/arch/arm/mm/idmap.c
@@ -78,7 +78,7 @@ void identity_mapping_del(pgd_t *pgd, unsigned long addr, unsigned long end)
  * the user-mode pages.  This will then ensure that we have predictable
  * results when turning the mmu off
  */
-void setup_mm_for_reboot(char mode)
+void setup_mm_for_reboot(void)
 {
         /*
          * We need to access to user-mode page tables here. For kernel threads
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 941a98c9e8aa..88417514b2c6 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -43,7 +43,7 @@ void __init paging_init(struct machine_desc *mdesc)
 /*
  * We don't need to do anything here for nommu machines.
  */
-void setup_mm_for_reboot(char mode)
+void setup_mm_for_reboot(void)
 {
 }
 
diff --git a/arch/arm/plat-mxc/system.c b/arch/arm/plat-mxc/system.c
index d65fb31a55ca..7e5c76ea4466 100644
--- a/arch/arm/plat-mxc/system.c
+++ b/arch/arm/plat-mxc/system.c
@@ -71,7 +71,7 @@ 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);