[MIPS] Wind River 4KC PPMC Eval Board Support

    
Support for the GT-64120-based Wind River 4KC PPMC Evaluation board.

Signed-off-by: Rongkai.Zhan <Rongkai.zhan@windriver.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/arch/mips/gt64120/wrppmc/reset.c b/arch/mips/gt64120/wrppmc/reset.c
new file mode 100644
index 000000000000..b97039c6d3db
--- /dev/null
+++ b/arch/mips/gt64120/wrppmc/reset.c
@@ -0,0 +1,50 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1997 Ralf Baechle
+ */
+#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>
+#include <asm/cacheflush.h>
+
+void wrppmc_machine_restart(char *command)
+{
+        /*
+         * 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.
+         */
+        local_irq_disable();
+        set_c0_status(ST0_BEV | ST0_ERL);
+        change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
+        flush_cache_all();
+        write_c0_wired(0);
+        __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
+}
+
+void wrppmc_machine_halt(void)
+{
+        local_irq_disable();
+
+        printk(KERN_NOTICE "You can safely turn off the power\n");
+        while (1) {
+                __asm__(
+                        ".set\tmips3\n\t"
+                        "wait\n\t"
+                        ".set\tmips0"
+                );
+        }
+}
+
+void wrppmc_machine_power_off(void)
+{
+        wrppmc_machine_halt();
+}