Add AT32AP CPU and AT32AP7000 SoC support

Patch by Haavard Skinnemoen, 06 Sep 2006

This patch adds support for the AT32AP CPU family and the AT32AP7000
chip, which is the first chip implementing the AVR32 architecture.

The AT32AP CPU core is a high-performance implementation featuring a
7-stage pipeline, separate instruction- and data caches, and a MMU.
For more information, please see the "AVR32 AP Technical Reference":

http://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf

In addition to this, the AT32AP7000 chip comes with a large set of
integrated peripherals, many of which are shared with the AT91 series
of ARM-based microcontrollers from Atmel. Full data sheet is
available here:

http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 97 insertions, 0 deletions

diff --git a/cpu/at32ap/cache.c b/cpu/at32ap/cache.c
new file mode 100644
index 0000000..41fb5aa
--- /dev/null
+++ b/cpu/at32ap/cache.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * 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/cacheflush.h>
+
+void dcache_clean_range(volatile void *start, size_t size)
+{
+	unsigned long v, begin, end, linesz;
+
+	linesz = CFG_DCACHE_LINESZ;
+
+	/* You asked for it, you got it */
+	begin = (unsigned long)start & ~(linesz - 1);
+	end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
+
+	for (v = begin; v < end; v += linesz)
+		dcache_clean_line((void *)v);
+
+	sync_write_buffer();
+}
+
+void dcache_invalidate_range(volatile void *start, size_t size)
+{
+	unsigned long v, begin, end, linesz;
+
+	linesz = CFG_DCACHE_LINESZ;
+
+	/* You asked for it, you got it */
+	begin = (unsigned long)start & ~(linesz - 1);
+	end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
+
+	for (v = begin; v < end; v += linesz)
+		dcache_invalidate_line((void *)v);
+}
+
+void dcache_flush_range(volatile void *start, size_t size)
+{
+	unsigned long v, begin, end, linesz;
+
+	linesz = CFG_DCACHE_LINESZ;
+
+	/* You asked for it, you got it */
+	begin = (unsigned long)start & ~(linesz - 1);
+	end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
+
+	for (v = begin; v < end; v += linesz)
+		dcache_flush_line((void *)v);
+
+	sync_write_buffer();
+}
+
+void icache_invalidate_range(volatile void *start, size_t size)
+{
+	unsigned long v, begin, end, linesz;
+
+	linesz = CFG_ICACHE_LINESZ;
+
+	/* You asked for it, you got it */
+	begin = (unsigned long)start & ~(linesz - 1);
+	end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
+
+	for (v = begin; v < end; v += linesz)
+		icache_invalidate_line((void *)v);
+}
+
+/*
+ * This is called after loading something into memory.  We need to
+ * make sure that everything that was loaded is actually written to
+ * RAM, and that the icache will look for it. Cleaning the dcache and
+ * invalidating the icache will do the trick.
+ */
+void  flush_cache (unsigned long start_addr, unsigned long size)
+{
+	dcache_clean_range((void *)start_addr, size);
+	icache_invalidate_range((void *)start_addr, size);
+}