From a44e5d716e31769cca8c4e1f026daa304ef5c5c5 Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Wed, 27 Jul 2011 12:34:11 +0200
Subject: start a simtrace board as copy of at91sam7-ek

---
 at91lib/boards/simtrace/board_memories.c | 99 ++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 at91lib/boards/simtrace/board_memories.c

(limited to 'at91lib/boards/simtrace/board_memories.c')

diff --git a/at91lib/boards/simtrace/board_memories.c b/at91lib/boards/simtrace/board_memories.c
new file mode 100644
index 0000000..cb98090
--- /dev/null
+++ b/at91lib/boards/simtrace/board_memories.c
@@ -0,0 +1,99 @@
+/* ----------------------------------------------------------------------------
+ *         ATMEL Microcontroller Software Support 
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+//         Headers
+//------------------------------------------------------------------------------
+
+#include "board_memories.h"
+#include "board.h"
+
+//------------------------------------------------------------------------------
+//         Internal definitions
+//------------------------------------------------------------------------------
+
+/// \internal Flash is mirrored in the remap zone.
+#define BOARD_FLASH             0
+
+/// \internal RAM is mirrored in the remap zone.
+#define BOARD_RAM               1
+
+//------------------------------------------------------------------------------
+//         Internal function
+//------------------------------------------------------------------------------
+//------------------------------------------------------------------------------
+/// Returns the current remap, either BOARD_FLASH or BOARD_RAM.
+//------------------------------------------------------------------------------
+static unsigned char BOARD_GetRemap( void )
+{
+    unsigned int *remap = (unsigned int *) 0;
+    unsigned int *ram = (unsigned int *) AT91C_ISRAM;
+
+    // Try to write in 0 and see if this affects the RAM
+    unsigned int temp = *ram;
+    *ram = temp + 1;
+    if (*remap == *ram) {
+
+        *ram = temp;
+        return BOARD_RAM;
+    }
+    else {
+
+        *ram = temp;
+        return BOARD_FLASH;
+    }
+}
+
+//------------------------------------------------------------------------------
+//         Exported functions
+//------------------------------------------------------------------------------
+//------------------------------------------------------------------------------
+/// Changes the mapping of the chip so that the remap area mirrors the
+/// internal flash.
+//------------------------------------------------------------------------------
+void BOARD_RemapFlash( void )
+{
+    if (BOARD_GetRemap() != BOARD_FLASH) {
+
+        AT91C_BASE_MC->MC_RCR = AT91C_MC_RCB;
+    }
+}
+
+//------------------------------------------------------------------------------
+/// Changes the mapping of the chip so that the remap area mirrors the
+/// internal RAM.
+//------------------------------------------------------------------------------
+void BOARD_RemapRam( void )
+{
+    if (BOARD_GetRemap() != BOARD_RAM) {
+
+        AT91C_BASE_MC->MC_RCR = AT91C_MC_RCB;
+    }
+}
+
-- 
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