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authorRalf Baechle <ralf@linux-mips.org>2001-02-05 01:33:01 +0000
committerRalf Baechle <ralf@linux-mips.org>2001-02-05 01:33:01 +0000
commit222ce6477d35d0b51fe9d5fb16ada90ac3341500 (patch)
tree33dc535dde84fab2a5cd175e0bfda393d5970f42 /arch/mips/gt64120/momenco_ocelot/reset.c
parent41f766e193858f7b5d1f9e81f50f392c1bd40f32 (diff)
Start of an attempt to unify support for GT64120 based boards.
Diffstat (limited to 'arch/mips/gt64120/momenco_ocelot/reset.c')
-rw-r--r--arch/mips/gt64120/momenco_ocelot/reset.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/mips/gt64120/momenco_ocelot/reset.c b/arch/mips/gt64120/momenco_ocelot/reset.c
new file mode 100644
index 000000000..0f4c7fee6
--- /dev/null
+++ b/arch/mips/gt64120/momenco_ocelot/reset.c
@@ -0,0 +1,48 @@
+/*
+ * 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.
+ *
+ * Copyright (C) 1997, 2001 Ralf Baechle
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ */
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+#include <asm/reboot.h>
+#include <asm/system.h>
+
+void momenco_ocelot_restart(char *command)
+{
+ *(volatile char *) 0xbc000000 = 0x0f;
+
+ /*
+ * Ouch, we're still alive ... This time we take the silver bullet ...
+ * ... and find that we leave the hardware in a state in which the
+ * kernel in the flush locks up somewhen during of after the PCI
+ * detection stuff.
+ */
+ set_cp0_status((ST0_BEV | ST0_ERL), (ST0_BEV | ST0_ERL));
+ set_cp0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
+ flush_cache_all();
+ write_32bit_cp0_register(CP0_WIRED, 0);
+ __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
+}
+
+void momenco_ocelot_halt(void)
+{
+ printk(KERN_NOTICE "\n** You can safely turn off the power\n");
+ while (1)
+ __asm__(".set\tmips3\n\t"
+ "wait\n\t"
+ ".set\tmips0");
+}
+
+void momenco_ocelot_power_off(void)
+{
+ momenco_ocelot_halt();
+}