prepare joining at91rm9200 into at91

* prepare joining at91 and at91rm9200
 * add modified copy of soc files to cpu/arm920t/at91 to make
   possible to compile at91rm9200 boards in at91 tree instead
   of at91rm9200
 * add header files with c structure defs for AT91 MC, ST and TC
 * the new cpu files are using at91 c structure soc access
 * please read README.soc-at91 for details

Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>

1 files changed, 59 insertions, 0 deletions

diff --git a/cpu/arm920t/at91/reset.c b/cpu/arm920t/at91/reset.c
new file mode 100644
index 0000000000..ce9c156154
--- /dev/null
+++ b/cpu/arm920t/at91/reset.c
@@ -0,0 +1,59 @@
+/*
+ * (C) Copyright 2002
+ * Lineo, Inc. <www.lineo.com>
+ * Bernhard Kuhn <bkuhn@lineo.com>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/at91_st.h>
+
+void board_reset(void) __attribute__((__weak__));
+
+void reset_cpu(ulong ignored)
+{
+	at91_st_t *st = (at91_st_t *) AT91_ST_BASE;
+#if defined(CONFIG_AT91RM9200_USART)
+	/*shutdown the console to avoid strange chars during reset */
+	serial_exit();
+#endif
+
+	if (board_reset)
+		board_reset();
+
+	/* Reset the cpu by setting up the watchdog timer */
+	writel(AT91_ST_WDMR_RSTEN | AT91_ST_WDMR_EXTEN | AT91_ST_WDMR_WDV(2),
+		&st->wdmr);
+	writel(AT91_ST_CR_WDRST, &st->cr);
+	/* and let it timeout */
+	while (1)
+		;
+	/* Never reached */
+}