1 files changed, 81 insertions, 0 deletions

diff --git a/arch/mips/vr41xx/common/pmu.c b/arch/mips/vr41xx/common/pmu.c
new file mode 100644
index 000000000000..c5f1043de938
--- /dev/null
+++ b/arch/mips/vr41xx/common/pmu.c
@@ -0,0 +1,81 @@
+/*
+ *  pmu.c, Power Management Unit routines for NEC VR4100 series.
+ *
+ *  Copyright (C) 2003-2004  Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/smp.h>
+#include <linux/types.h>
+
+#include <asm/cpu.h>
+#include <asm/io.h>
+#include <asm/reboot.h>
+#include <asm/system.h>
+
+#define PMUCNT2REG      KSEG1ADDR(0x0f0000c6)
+ #define SOFTRST        0x0010
+
+static inline void software_reset(void)
+{
+        uint16_t val;
+
+        switch (current_cpu_data.cputype) {
+        case CPU_VR4122:
+        case CPU_VR4131:
+        case CPU_VR4133:
+                val = readw(PMUCNT2REG);
+                val |= SOFTRST;
+                writew(val, PMUCNT2REG);
+                break;
+        default:
+                break;
+        }
+}
+
+static void vr41xx_restart(char *command)
+{
+        local_irq_disable();
+        software_reset();
+        printk(KERN_NOTICE "\nYou can reset your system\n");
+        while (1) ;
+}
+
+static void vr41xx_halt(void)
+{
+        local_irq_disable();
+        printk(KERN_NOTICE "\nYou can turn off the power supply\n");
+        while (1) ;
+}
+
+static void vr41xx_power_off(void)
+{
+        local_irq_disable();
+        printk(KERN_NOTICE "\nYou can turn off the power supply\n");
+        while (1) ;
+}
+
+static int __init vr41xx_pmu_init(void)
+{
+        _machine_restart = vr41xx_restart;
+        _machine_halt = vr41xx_halt;
+        _machine_power_off = vr41xx_power_off;
+
+        return 0;
+}
+
+early_initcall(vr41xx_pmu_init);