Update from 2013.01 to 2013.07

[karo-tx-uboot.git] / arch / arm / cpu / armv7 / at91 / reset.c

diff --git a/arch/arm/cpu/armv7/at91/reset.c b/arch/arm/cpu/armv7/at91/reset.c
new file mode 100644 (file)
index 0000000..b30e79b
--- /dev/null
+++ b/arch/arm/cpu/armv7/at91/reset.c
@@ -0,0 +1,31 @@
+/*
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian@popies.net>
+ * Lead Tech Design <www.leadtechdesign.com>
+ *
+ * (C) Copyright 2013
+ * Bo Shen <voice.shen@atmel.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/at91_rstc.h>
+
+/* Reset the cpu by telling the reset controller to do so */
+void reset_cpu(ulong ignored)
+{
+       at91_rstc_t *rstc = (at91_rstc_t *)ATMEL_BASE_RSTC;
+
+       writel(AT91_RSTC_KEY
+               | AT91_RSTC_CR_PROCRST  /* Processor Reset */
+               | AT91_RSTC_CR_PERRST   /* Peripheral Reset */
+#ifdef CONFIG_AT91RESET_EXTRST
+               | AT91_RSTC_CR_EXTRST   /* External Reset (assert nRST pin) */
+#endif
+               , &rstc->cr);
+       /* never reached */
+       do { } while (1);
+}