1 files changed, 54 insertions, 0 deletions

diff --git a/arch/mips/pic32/common/reset.c b/arch/mips/pic32/common/reset.c
new file mode 100644
index 000000000..a5fd7a8e2
--- /dev/null
+++ b/arch/mips/pic32/common/reset.c
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Joshua Henderson <joshua.henderson@microchip.com>
+ * Copyright (C) 2015 Microchip Technology Inc.  All rights reserved.
+ */
+#include <linux/init.h>
+#include <linux/pm.h>
+#include <asm/reboot.h>
+#include <asm/mach-pic32/pic32.h>
+
+#define PIC32_RSWRST            0x10
+
+static void pic32_halt(void)
+{
+        while (1) {
+                __asm__(".set push;\n"
+                        ".set arch=r4000;\n"
+                        "wait;\n"
+                        ".set pop;\n"
+                );
+        }
+}
+
+static void pic32_machine_restart(char *command)
+{
+        void __iomem *reg =
+                ioremap(PIC32_BASE_RESET + PIC32_RSWRST, sizeof(u32));
+
+        pic32_syskey_unlock();
+
+        /* magic write/read */
+        __raw_writel(1, reg);
+        (void)__raw_readl(reg);
+
+        pic32_halt();
+}
+
+static void pic32_machine_halt(void)
+{
+        local_irq_disable();
+
+        pic32_halt();
+}
+
+static int __init mips_reboot_setup(void)
+{
+        _machine_restart = pic32_machine_restart;
+        _machine_halt = pic32_machine_halt;
+        pm_power_off = pic32_machine_halt;
+
+        return 0;
+}
+
+arch_initcall(mips_reboot_setup);