arm64: vexpress: Add support for poweroff/restart

This patch adds the arm_pm_poweroff definition expected by the
vexpress-poweroff.c driver and enables the latter for arm64.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Pawel Moll <pawel.moll@arm.com>

3 files changed, 8 insertions, 5 deletions

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index c05bb215292a..43b0e9f10a39 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -32,6 +32,8 @@ config ARM64
         select OF
         select OF_EARLY_FLATTREE
         select PERF_USE_VMALLOC
+        select POWER_RESET
+        select POWER_SUPPLY
         select RTC_LIB
         select SPARSE_IRQ
         select SYSCTL_EXCEPTION_TRACE
@@ -106,6 +108,7 @@ config ARCH_VEXPRESS
         bool "ARMv8 software model (Versatile Express)"
         select ARCH_REQUIRE_GPIOLIB
         select COMMON_CLK_VERSATILE
+        select POWER_RESET_VEXPRESS
         select VEXPRESS_CONFIG
         help
           This enables support for the ARMv8 software model (Versatile
diff --git a/arch/arm64/include/asm/system_misc.h b/arch/arm64/include/asm/system_misc.h
index 95e407255347..a6e1750369ef 100644
--- a/arch/arm64/include/asm/system_misc.h
+++ b/arch/arm64/include/asm/system_misc.h
@@ -41,7 +41,7 @@ extern void show_pte(struct mm_struct *mm, unsigned long addr);
 extern void __show_regs(struct pt_regs *);
 
 void soft_restart(unsigned long);
-extern void (*pm_restart)(const char *cmd);
+extern void (*arm_pm_restart)(char str, const char *cmd);
 
 #define UDBG_UNDEFINED  (1 << 0)
 #define UDBG_SYSCALL    (1 << 1)
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 116a60abe86f..bbefb6fdfee2 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -81,8 +81,8 @@ void soft_restart(unsigned long addr)
 void (*pm_power_off)(void);
 EXPORT_SYMBOL_GPL(pm_power_off);
 
-void (*pm_restart)(const char *cmd);
-EXPORT_SYMBOL_GPL(pm_restart);
+void (*arm_pm_restart)(char str, const char *cmd);
+EXPORT_SYMBOL_GPL(arm_pm_restart);
 
 
 /*
@@ -164,8 +164,8 @@ void machine_restart(char *cmd)
         local_fiq_disable();
 
         /* Now call the architecture specific reboot code. */
-        if (pm_restart)
-                pm_restart(cmd);
+        if (arm_pm_restart)
+                arm_pm_restart('h', cmd);
 
         /*
          * Whoops - the architecture was unable to reboot.