[POWERPC] pasemi: Implement restart

Implement reset on platforms/pasemi. Default is just to reset the
cpu using the SDC registers.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 9 insertions, 15 deletions

diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c
index f69f5e76618..cabf7017c05 100644
--- a/arch/powerpc/platforms/pasemi/setup.c
+++ b/arch/powerpc/platforms/pasemi/setup.c
@@ -38,21 +38,13 @@
 
 #include "pasemi.h"
 
-static void pas_restart(char *cmd)
-{
-        printk("restart unimplemented, looping...\n");
-        for (;;) ;
-}
-
-static void pas_power_off(void)
-{
-        printk("power off unimplemented, looping...\n");
-        for (;;) ;
-}
+static void __iomem *reset_reg;
 
-static void pas_halt(void)
+static void pas_restart(char *cmd)
 {
-        pas_power_off();
+        printk("Restarting...\n");
+        while (1)
+                out_le32(reset_reg, 0x6000000);
 }
 
 #ifdef CONFIG_SMP
@@ -82,6 +74,10 @@ void __init pas_setup_arch(void)
         conswitchp = &dummy_con;
 #endif
 
+        /* Remap SDC register for doing reset */
+        /* XXXOJN This should maybe come out of the device tree */
+        reset_reg = ioremap(0xfc101100, 4);
+
         pasemi_idle_init();
 }
 
@@ -211,8 +207,6 @@ define_machine(pas) {
         .init_IRQ               = pas_init_IRQ,
         .get_irq                = mpic_get_irq,
         .restart                = pas_restart,
-        .power_off              = pas_power_off,
-        .halt                   = pas_halt,
         .get_boot_time          = pas_get_boot_time,
         .calibrate_decr         = generic_calibrate_decr,
         .check_legacy_ioport    = pas_check_legacy_ioport,