MIPS: Add support for Microchip PIC32MZ[DA] SoC family.

Add Microchip PIC32MZ[DA] SoC family support.

Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/arch/mips/mach-pic32/reset.c b/arch/mips/mach-pic32/reset.c
new file mode 100644
index 0000000..66c6833
--- /dev/null
+++ b/arch/mips/mach-pic32/reset.c
@@ -0,0 +1,36 @@
+/*
+ * (c) 2015 Purna Chandra Mandal <purna.mandal@microchip.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <mach/pic32.h>
+
+/* SYSKEY */
+#define UNLOCK_KEY1	0xaa996655
+#define UNLOCK_KEY2	0x556699aa
+#define LOCK_KEY	0
+
+#define RSWRST          0x1250
+
+void _machine_restart(void)
+{
+	void __iomem *base;
+
+	base = pic32_get_syscfg_base();
+
+	/* unlock sequence */
+	writel(LOCK_KEY, base + SYSKEY);
+	writel(UNLOCK_KEY1, base + SYSKEY);
+	writel(UNLOCK_KEY2, base + SYSKEY);
+
+	/* soft reset */
+	writel(0x1, base + RSWRST);
+	(void) readl(base + RSWRST);
+
+	while (1)
+		;
+}