From 911af3b8363247d132abb9a11559104b0402ae56 Mon Sep 17 00:00:00 2001
From: Allen Ibara <allen@zee.aero>
Date: Fri, 10 Jan 2014 10:54:56 -0800
Subject: [PATCH] LPC43XX: Add reset command to do a system reset (but not the
 debug).

---
 src/lpc43xx.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/lpc43xx.c b/src/lpc43xx.c
index 49f8068..a578e67 100644
--- a/src/lpc43xx.c
+++ b/src/lpc43xx.c
@@ -114,6 +114,7 @@ struct flash_program {
 };
 
 static bool lpc43xx_cmd_erase(target *t);
+static bool lpc43xx_cmd_reset(target *target, int argc, const char *argv[]);
 static bool lpc43xx_cmd_mkboot(target *target, int argc, const char *argv[]);
 static int lpc43xx_flash_init(struct target_s *target);
 static void lpc43xx_iap_call(struct target_s *target, struct flash_param *param, unsigned param_len);
@@ -123,6 +124,7 @@ static int lpc43xx_flash_write(struct target_s *target, uint32_t dest, const uin
 
 const struct command_s lpc43xx_cmd_list[] = {
 	{"erase_mass", (cmd_handler)lpc43xx_cmd_erase, "Erase entire flash memory"},
+	{"reset", lpc43xx_cmd_reset, "Reset target"},
 	{"mkboot", lpc43xx_cmd_mkboot, "Make flash bank bootable"},
 	{NULL, NULL, NULL}
 };
@@ -198,6 +200,20 @@ bool lpc43xx_probe(struct target_s *target)
 	return false;
 }
 
+/* Reset all major systems _except_ debug */
+static bool lpc43xx_cmd_reset(target *target, int __attribute__((unused)) argc, const char __attribute__((unused)) *argv[])
+{
+	/* Cortex-M4 Application Interrupt and Reset Control Register */
+	static const uint32_t AIRCR = 0xE000ED0C;
+	/* Magic value key */
+	static const uint32_t reset_val = 0x05FA0004;
+
+	/* System reset on target */
+	target_mem_write_words(target, AIRCR, &reset_val, sizeof(reset_val));
+
+	return true;
+}
+
 static bool lpc43xx_cmd_erase(target *target)
 {
 	uint32_t bank = 0;