MX3: Add basic support for LogicPD i.MX31 LiteKit

This patch adds basic support for i.MX31 LiteKit by LogicPD.
With printascii() in kernel/printk.c, it boots right into the
rootfs-panic.

Note: This is a modified version of Daniel's patch to fit into this patch
stack.

> On 09.06.2008, at 17:26, Russell King - ARM Linux wrote:
>
> > I would much prefer it if board specific includes were included by the
> > code which needs them rather than in asm/arch/hardware.h.  With the
> > device model, drivers shouldn't need to include any board specific
> > includes - only the board specific C file should need it.
>
> The new version of this patch (#5102) has been uploaded to the patch
> tracker this morning.
Signed-off-by: Daniel Mack <daniel@caiaq.de>

-- 
 arch/arm/configs/mx31litekit_defconfig    | 1100 ++++++++++++++++++++++++++++++
 arch/arm/mach-mx3/Kconfig                 |    7 
 arch/arm/mach-mx3/Makefile                |    1 
 arch/arm/mach-mx3/mx31lite.c              |   96 ++
 include/asm-arm/arch-mxc/board-mx31lite.h |   38 +
 include/asm-arm/arch-mxc/debug-macro.S    |    3 
 6 files changed, 1245 insertions(+)

arch/arm/mach-mx3/Kconfig

@@ -14,5 +14,12 @@ config MACH_PCM037
 	  Include support for Phytec pcm037 platform. This includes
 	  specific configurations for the board and its peripherals.
 
+config MACH_MX31LITE
+	bool "Support MX31 LITEKIT (LogicPD)"
+	default n
+	help
+	  Include support for MX31 LITEKIT platform. This includes specific
+	  configurations for the board and its peripherals.
+
 endmenu
 

arch/arm/mach-mx3/Makefile

@@ -6,4 +6,5 @@
 
 obj-y			:= mm.o clock.o devices.o iomux.o
 obj-$(CONFIG_MACH_MX31ADS)	+= mx31ads.o
+obj-$(CONFIG_MACH_MX31LITE)	+= mx31lite.o
 obj-$(CONFIG_MACH_PCM037)	+= pcm037.o

arch/arm/mach-mx3/mx31lite.c

+/*
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
+ *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * 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/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/memory.h>
+
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/arch/common.h>
+#include <asm/page.h>
+#include <asm/setup.h>
+#include <asm/arch/board-mx31lite.h>
+
+/*
+ * This file contains the board-specific initialization routines.
+ */
+
+/*
+ * This structure defines the MX31 memory map.
+ */
+static struct map_desc mx31lite_io_desc[] __initdata = {
+	{
+		.virtual = AIPS1_BASE_ADDR_VIRT,
+		.pfn = __phys_to_pfn(AIPS1_BASE_ADDR),
+		.length = AIPS1_SIZE,
+		.type = MT_NONSHARED_DEVICE
+	}, {
+		.virtual = SPBA0_BASE_ADDR_VIRT,
+		.pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
+		.length = SPBA0_SIZE,
+		.type = MT_NONSHARED_DEVICE
+	}, {
+		.virtual = AIPS2_BASE_ADDR_VIRT,
+		.pfn = __phys_to_pfn(AIPS2_BASE_ADDR),
+		.length = AIPS2_SIZE,
+		.type = MT_NONSHARED_DEVICE
+	}, {
+		.virtual = CS4_BASE_ADDR_VIRT,
+		.pfn = __phys_to_pfn(CS4_BASE_ADDR),
+		.length = CS4_SIZE,
+		.type = MT_DEVICE
+	}
+};
+
+/*
+ * Set up static virtual mappings.
+ */
+void __init mx31lite_map_io(void)
+{
+	mxc_map_io();
+	iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
+}
+
+/*
+ * Board specific initialization.
+ */
+static void __init mxc_board_init(void)
+{
+}
+
+/*
+ * The following uses standard kernel macros defined in arch.h in order to
+ * initialize __mach_desc_MX31LITE data structure.
+ */
+
+MACHINE_START(MX31LITE, "LogicPD MX31 LITEKIT")
+	/* Maintainer: Freescale Semiconductor, Inc. */
+	.phys_io        = AIPS1_BASE_ADDR,
+	.io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
+	.boot_params    = PHYS_OFFSET + 0x100,
+	.map_io         = mx31lite_map_io,
+	.init_irq       = mxc_init_irq,
+	.init_machine   = mxc_board_init,
+	.timer          = &mxc_timer,
+MACHINE_END

include/asm-arm/arch-mxc/board-mx31lite.h

+/*
+ * Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_MXC_BOARD_MX31LITE_H__
+#define __ASM_ARCH_MXC_BOARD_MX31LITE_H__
+
+#define MXC_MAX_EXP_IO_LINES	16
+
+
+/*
+ * Memory Size parameters
+ */
+
+/*
+ * Size of SDRAM memory
+ */
+#define SDRAM_MEM_SIZE		SZ_128M
+/*
+ * Size of MBX buffer memory
+ */
+#define MXC_MBX_MEM_SIZE	SZ_16M
+/*
+ * Size of memory available to kernel
+ */
+#define MEM_SIZE		(SDRAM_MEM_SIZE - MXC_MBX_MEM_SIZE)
+
+#define MXC_LL_UART_PADDR	UART1_BASE_ADDR
+#define MXC_LL_UART_VADDR	AIPS1_IO_ADDRESS(UART1_BASE_ADDR)
+
+#endif /* __ASM_ARCH_MXC_BOARD_MX31ADS_H__ */
+

include/asm-arm/arch-mxc/debug-macro.S

@@ -18,6 +18,9 @@
 #endif
 #ifdef CONFIG_MACH_PCM037
 #include <asm/arch/board-pcm037.h>
+#endif
+#ifdef CONFIG_MACH_MX31LITE
+#include <asm/arch/board-mx31lite.h>
 #endif
 
 		.macro	addruart,rx