[ARM] 4461/1: MXC platform and i.MX31ADS core support

This patch adds the foundation pieces for
the Freescale MXC platforms, including
i.MX2 and i.MX3 based systems.

The bare-bones MX31 support in this patch
boots to the rootdev panic with 8250 serial
console configured "console=ttyS0,115200".
It assumes that Redboot is the boot loader.

Signed-off-by: Quinn Jensen <quinn.jensen@freescale.com>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 64 insertions, 0 deletions

diff --git a/arch/arm/mach-mx3/mm.c b/arch/arm/mach-mx3/mm.c
new file mode 100644
index 000000000000..41dad485ded9
--- /dev/null
+++ b/arch/arm/mach-mx3/mm.c
@@ -0,0 +1,64 @@
+/*
+ *  Copyright (C) 1999,2000 Arm Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
+ *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ *    - add MX31 specific definitions
+ *
+ * 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 <linux/mm.h>
+#include <linux/init.h>
+#include <asm/hardware.h>
+#include <asm/pgtable.h>
+#include <asm/mach/map.h>
+#include <asm/arch/common.h>
+
+/*!
+ * @file mm.c
+ *
+ * @brief This file creates static virtual to physical mappings, common to all MX3 boards.
+ *
+ * @ingroup Memory
+ */
+
+/*!
+ * This table defines static virtual address mappings for I/O regions.
+ * These are the mappings common across all MX3 boards.
+ */
+static struct map_desc mxc_io_desc[] __initdata = {
+        {
+                .virtual        = X_MEMC_BASE_ADDR_VIRT,
+                .pfn            = __phys_to_pfn(X_MEMC_BASE_ADDR),
+                .length         = X_MEMC_SIZE,
+                .type           = MT_DEVICE
+        }, {
+                .virtual        = AVIC_BASE_ADDR_VIRT,
+                .pfn            = __phys_to_pfn(AVIC_BASE_ADDR),
+                .length         = AVIC_SIZE,
+                .type           = MT_NONSHARED_DEVICE
+        },
+};
+
+/*!
+ * This function initializes the memory map. It is called during the
+ * system startup to create static physical to virtual memory mappings
+ * for the IO modules.
+ */
+void __init mxc_map_io(void)
+{
+        iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
+}