powerpc/powernv: Hookup reboot and poweroff functions

This calls the respective HAL functions, and spin on hal_poll_event()
to ensure the HAL has a chance to communicate with the FSP to trigger
the reboot or shutdown operation

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
index 07ba1ec..0fac0a6 100644 (file)
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -83,19 +83,39 @@ static void pnv_show_cpuinfo(struct seq_file *m)
        of_node_put(root);
 }
 
-static void pnv_restart(char *cmd)
+static void  __noreturn pnv_restart(char *cmd)
 {
-       for (;;);
+       long rc = OPAL_BUSY;
+
+       while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) {
+               rc = opal_cec_reboot();
+               if (rc == OPAL_BUSY_EVENT)
+                       opal_poll_events(NULL);
+               else
+                       mdelay(10);
+       }
+       for (;;)
+               opal_poll_events(NULL);
 }
 
-static void pnv_power_off(void)
+static void __noreturn pnv_power_off(void)
 {
-       for (;;);
+       long rc = OPAL_BUSY;
+
+       while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) {
+               rc = opal_cec_power_down(0);
+               if (rc == OPAL_BUSY_EVENT)
+                       opal_poll_events(NULL);
+               else
+                       mdelay(10);
+       }
+       for (;;)
+               opal_poll_events(NULL);
 }
 
-static void pnv_halt(void)
+static void __noreturn pnv_halt(void)
 {
-       for (;;);
+       pnv_power_off();
 }
 
 static unsigned long __init pnv_get_boot_time(void)