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authorAlek Du <alek.du@intel.com>2010-11-10 16:50:08 +0000
committerThomas Gleixner <tglx@linutronix.de>2010-11-11 11:34:27 +0100
commitcfb505a7ebd4c84206b4cc7d9f966d864a2ac05a (patch)
treea17a5f480539dd4604b1026d411199040b845079 /arch/x86/platform
parent7f05dec3dd70f086870fdc1d40dbe30db1fe0994 (diff)
x86: mrst: Add Moorestown specific reboot/shutdown support
Moorestowns needs to use a special IPC command to reboot or shutdown the platform. Signed-off-by: Alek Du <alek.du@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> LKML-Reference: <20101110164928.6365.94243.stgit@localhost.localdomain> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/platform')
-rw-r--r--arch/x86/platform/mrst/mrst.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c
index e6f4473fc05..c727d97f7f3 100644
--- a/arch/x86/platform/mrst/mrst.c
+++ b/arch/x86/platform/mrst/mrst.c
@@ -35,6 +35,7 @@
#include <asm/i8259.h>
#include <asm/intel_scu_ipc.h>
#include <asm/apb_timer.h>
+#include <asm/reboot.h>
/*
@@ -268,6 +269,17 @@ static int mrst_i8042_detect(void)
return 0;
}
+/* Reboot and power off are handled by the SCU on a MID device */
+static void mrst_power_off(void)
+{
+ intel_scu_ipc_simple_command(0xf1, 1);
+}
+
+static void mrst_reboot(void)
+{
+ intel_scu_ipc_simple_command(0xf1, 0);
+}
+
/*
* Moorestown specific x86_init function overrides and early setup
* calls.
@@ -293,6 +305,10 @@ void __init x86_mrst_early_setup(void)
legacy_pic = &null_legacy_pic;
+ /* Moorestown specific power_off/restart method */
+ pm_power_off = mrst_power_off;
+ machine_ops.emergency_restart = mrst_reboot;
+
/* Avoid searching for BIOS MP tables */
x86_init.mpparse.find_smp_config = x86_init_noop;
x86_init.mpparse.get_smp_config = x86_init_uint_noop;