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-rw-r--r--cpu/at32ap/cache.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/cpu/at32ap/cache.c b/cpu/at32ap/cache.c
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+++ b/cpu/at32ap/cache.c
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+/*
+ * 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);
+}