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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>
This commit is contained in:
Alek Du 2010-11-10 16:50:08 +00:00 committed by Thomas Gleixner
parent 7f05dec3dd
commit cfb505a7eb
1 changed files with 16 additions and 0 deletions
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16
arch/x86/platform/mrst/mrst.c
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@ -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;