[PATCH] Add support for Eukrea CPUIMX35

* [PATCH] Add support for Eukrea CPUIMX35
@ 2010-06-10  7:43 Eric Bénard
  2010-06-10 11:42 ` Sascha Hauer
  0 siblings, 1 reply; 3+ messages in thread
From: Eric Bénard @ 2010-06-10  7:43 UTC (permalink / raw)
  To: s.hauer; +Cc: barebox

From: Eric Benard <eric@eukrea.com>

this modules is based on Freescale's i.MX357 CPU, with 128MB of
mDDR, 256 MB NAND, and ethernet PHY.

Signed-off-by: Eric Bénard <eric@eukrea.com>
---
 arch/arm/Makefile                           |    1 +
 arch/arm/configs/eukrea_cpuimx35_defconfig  |  254 ++++++++++++++++++++
 arch/arm/mach-imx/Kconfig                   |   11 +
 board/eukrea_cpuimx35/Makefile              |   25 ++
 board/eukrea_cpuimx35/config.h              |   23 ++
 board/eukrea_cpuimx35/env/bin/_update       |   36 +++
 board/eukrea_cpuimx35/env/bin/boot          |   52 ++++
 board/eukrea_cpuimx35/env/bin/hush_hack     |    1 +
 board/eukrea_cpuimx35/env/bin/init          |   41 ++++
 board/eukrea_cpuimx35/env/bin/update_kernel |    8 +
 board/eukrea_cpuimx35/env/bin/update_root   |    8 +
 board/eukrea_cpuimx35/env/config            |   27 ++
 board/eukrea_cpuimx35/eukrea_cpuimx35.c     |  343 +++++++++++++++++++++++++++
 board/eukrea_cpuimx35/eukrea_cpuimx35.dox   |    4 +
 board/eukrea_cpuimx35/flash_header.c        |   60 +++++
 board/eukrea_cpuimx35/lowlevel.c            |  218 +++++++++++++++++
 16 files changed, 1112 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/configs/eukrea_cpuimx35_defconfig
 create mode 100644 board/eukrea_cpuimx35/Makefile
 create mode 100644 board/eukrea_cpuimx35/config.h
 create mode 100644 board/eukrea_cpuimx35/env/bin/_update
 create mode 100644 board/eukrea_cpuimx35/env/bin/boot
 create mode 100644 board/eukrea_cpuimx35/env/bin/hush_hack
 create mode 100644 board/eukrea_cpuimx35/env/bin/init
 create mode 100644 board/eukrea_cpuimx35/env/bin/update_kernel
 create mode 100644 board/eukrea_cpuimx35/env/bin/update_root
 create mode 100644 board/eukrea_cpuimx35/env/config
 create mode 100644 board/eukrea_cpuimx35/eukrea_cpuimx35.c
 create mode 100644 board/eukrea_cpuimx35/eukrea_cpuimx35.dox
 create mode 100644 board/eukrea_cpuimx35/flash_header.c
 create mode 100644 board/eukrea_cpuimx35/lowlevel.c

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 0bdce21..85ff9c8 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -63,6 +63,7 @@ board-$(CONFIG_MACH_EDB9315)			:= edb93xx
 board-$(CONFIG_MACH_EDB9315A)			:= edb93xx
 board-$(CONFIG_MACH_EUKREA_CPUIMX25)		:= eukrea_cpuimx25
 board-$(CONFIG_MACH_EUKREA_CPUIMX27)		:= eukrea_cpuimx27
+board-$(CONFIG_MACH_EUKREA_CPUIMX35)		:= eukrea_cpuimx35
 board-$(CONFIG_MACH_FREESCALE_MX25_3STACK)	:= freescale-mx25-3-stack
 board-$(CONFIG_MACH_FREESCALE_MX35_3STACK)	:= freescale-mx35-3-stack
 board-$(CONFIG_MACH_IMX21ADS)			:= imx21ads
diff --git a/arch/arm/configs/eukrea_cpuimx35_defconfig b/arch/arm/configs/eukrea_cpuimx35_defconfig
new file mode 100644
index 0000000..ff6547f
--- /dev/null
+++ b/arch/arm/configs/eukrea_cpuimx35_defconfig
@@ -0,0 +1,254 @@
+#
+# Automatically generated make config: don't edit
+# barebox version: 2010.06.0
+# Mon Jun  7 18:25:47 2010
+#
+# CONFIG_BOARD_LINKER_SCRIPT is not set
+CONFIG_GENERIC_LINKER_SCRIPT=y
+CONFIG_ARM=y
+
+#
+# System Type
+#
+# CONFIG_ARCH_AT91 is not set
+# CONFIG_ARCH_AT91RM9200 is not set
+# CONFIG_ARCH_EP93XX is not set
+CONFIG_ARCH_IMX=y
+# CONFIG_ARCH_NETX is not set
+# CONFIG_ARCH_OMAP is not set
+# CONFIG_ARCH_S3C24xx is not set
+
+#
+# Processor Type
+#
+CONFIG_CPU_32=y
+CONFIG_CPU_V6=y
+CONFIG_CPU_32v6=y
+
+#
+# processor features
+#
+CONFIG_ARCH_HAS_L2X0=y
+CONFIG_CACHE_L2X0=y
+CONFIG_ARCH_TEXT_BASE=0x87f00000
+CONFIG_BOARDINFO="Eukrea CPUIMX35"
+CONFIG_ARCH_HAS_FEC_IMX=y
+CONFIG_ARCH_IMX_INTERNAL_BOOT=y
+
+#
+# Freescale i.MX System-on-Chip
+#
+# CONFIG_ARCH_IMX1 is not set
+# CONFIG_ARCH_IMX21 is not set
+# CONFIG_ARCH_IMX25 is not set
+# CONFIG_ARCH_IMX27 is not set
+# CONFIG_ARCH_IMX31 is not set
+CONFIG_ARCH_IMX35=y
+CONFIG_MACH_EUKREA_CPUIMX35=y
+# CONFIG_MACH_FREESCALE_MX35_3STACK is not set
+# CONFIG_MACH_PCM043 is not set
+
+#
+# Board specific settings       
+#
+
+#
+# i.MX specific settings        
+#
+# CONFIG_IMX_CLKO is not set
+# CONFIG_AEABI is not set
+
+#
+# Arm specific settings         
+#
+CONFIG_CMD_ARM_CPUINFO=y
+CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS=y
+CONFIG_GREGORIAN_CALENDER=y
+CONFIG_HAS_KALLSYMS=y
+CONFIG_HAS_MODULES=y
+CONFIG_CMD_MEMORY=y
+CONFIG_ENV_HANDLING=y
+CONFIG_GENERIC_GPIO=y
+
+#
+# General Settings              
+#
+CONFIG_LOCALVERSION_AUTO=y
+
+#
+# memory layout                 
+#
+CONFIG_HAVE_MMU=y
+CONFIG_MMU=y
+CONFIG_HAVE_CONFIGURABLE_TEXT_BASE=y
+CONFIG_TEXT_BASE=0x87f00000
+CONFIG_HAVE_CONFIGURABLE_MEMORY_LAYOUT=y
+CONFIG_MEMORY_LAYOUT_DEFAULT=y
+# CONFIG_MEMORY_LAYOUT_FIXED is not set
+CONFIG_STACK_SIZE=0x8000
+CONFIG_MALLOC_SIZE=0x800000
+# CONFIG_BROKEN is not set
+# CONFIG_EXPERIMENTAL is not set
+CONFIG_MACH_HAS_LOWLEVEL_INIT=y
+CONFIG_MACH_DO_LOWLEVEL_INIT=y
+CONFIG_PROMPT="barebox:"
+CONFIG_BAUDRATE=115200
+CONFIG_LONGHELP=y
+CONFIG_CBSIZE=1024
+CONFIG_MAXARGS=16
+CONFIG_SHELL_HUSH=y
+# CONFIG_SHELL_SIMPLE is not set
+CONFIG_GLOB=y
+CONFIG_PROMPT_HUSH_PS2="> "
+CONFIG_HUSH_FANCY_PROMPT=y
+CONFIG_CMDLINE_EDITING=y
+CONFIG_AUTO_COMPLETE=y
+CONFIG_DYNAMIC_CRC_TABLE=y
+CONFIG_ERRNO_MESSAGES=y
+CONFIG_TIMESTAMP=y
+CONFIG_CONSOLE_FULL=y
+CONFIG_CONSOLE_ACTIVATE_FIRST=y
+# CONFIG_OF_FLAT_TREE is not set
+# CONFIG_PARTITION is not set
+# CONFIG_DEFAULT_ENVIRONMENT is not set
+
+#
+# Debugging                     
+#
+# CONFIG_DEBUG_INFO is not set
+# CONFIG_ENABLE_FLASH_NOISE is not set
+# CONFIG_ENABLE_PARTITION_NOISE is not set
+# CONFIG_ENABLE_DEVICE_NOISE is not set
+
+#
+# Commands                      
+#
+
+#
+# scripting                     
+#
+CONFIG_CMD_EDIT=y
+CONFIG_CMD_SLEEP=y
+CONFIG_CMD_SAVEENV=y
+CONFIG_CMD_LOADENV=y
+CONFIG_CMD_EXPORT=y
+CONFIG_CMD_PRINTENV=y
+CONFIG_CMD_READLINE=y
+CONFIG_CMD_TRUE=y
+CONFIG_CMD_FALSE=y
+
+#
+# file commands                 
+#
+CONFIG_CMD_LS=y
+CONFIG_CMD_RM=y
+CONFIG_CMD_CAT=y
+CONFIG_CMD_MKDIR=y
+CONFIG_CMD_RMDIR=y
+CONFIG_CMD_CP=y
+CONFIG_CMD_PWD=y
+CONFIG_CMD_CD=y
+CONFIG_CMD_MOUNT=y
+CONFIG_CMD_UMOUNT=y
+
+#
+# console                       
+#
+CONFIG_CMD_CLEAR=y
+CONFIG_CMD_ECHO=y
+CONFIG_CMD_ECHO_E=y
+
+#
+# memory                        
+#
+CONFIG_CMD_LOADB=y
+CONFIG_CMD_MEMINFO=y
+CONFIG_CMD_CRC=y
+CONFIG_CMD_MTEST=y
+# CONFIG_CMD_MTEST_ALTERNATIVE is not set
+
+#
+# flash                         
+#
+# CONFIG_CMD_FLASH is not set
+
+#
+# booting                       
+#
+CONFIG_CMD_BOOTM=y
+# CONFIG_CMD_BOOTM_ZLIB is not set
+# CONFIG_CMD_BOOTM_BZLIB is not set
+# CONFIG_CMD_BOOTM_SHOW_TYPE is not set
+CONFIG_CMD_BOOTZ=y
+CONFIG_CMD_BOOTU=y
+# CONFIG_CMD_LINUX16 is not set
+CONFIG_CMD_RESET=y
+CONFIG_CMD_GO=y
+CONFIG_CMD_TIMEOUT=y
+CONFIG_CMD_PARTITION=y
+CONFIG_CMD_TEST=y
+CONFIG_CMD_VERSION=y
+CONFIG_CMD_HELP=y
+CONFIG_CMD_DEVINFO=y
+CONFIG_CMD_BMP=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_UNLZO=y
+CONFIG_NET=y
+CONFIG_NET_DHCP=y
+# CONFIG_NET_RARP is not set
+# CONFIG_NET_NFS is not set
+CONFIG_NET_PING=y
+CONFIG_NET_TFTP=y
+
+#
+# Drivers                       
+#
+
+#
+# serial drivers                
+#
+# CONFIG_DRIVER_SERIAL_ARM_DCC is not set
+CONFIG_DRIVER_SERIAL_IMX=y
+# CONFIG_DRIVER_SERIAL_NS16550 is not set
+CONFIG_MIIPHY=y
+
+#
+# Network drivers               
+#
+# CONFIG_DRIVER_NET_SMC911X is not set
+# CONFIG_DRIVER_NET_SMC91111 is not set
+CONFIG_DRIVER_NET_FEC_IMX=y
+
+#
+# SPI drivers                   
+#
+# CONFIG_SPI is not set
+# CONFIG_I2C is not set
+
+#
+# flash drivers                 
+#
+# CONFIG_DRIVER_CFI is not set
+CONFIG_NAND=y
+CONFIG_NAND_IMX=y
+# CONFIG_NAND_IMX_BOOT is not set
+# CONFIG_MTD_NAND_VERIFY_WRITE is not set
+# CONFIG_MTD_NAND_ECC_SMC is not set
+CONFIG_MTD_NAND_IDS=y
+# CONFIG_ATA is not set
+# CONFIG_USB is not set
+# CONFIG_USB_GADGET is not set
+CONFIG_VIDEO=y
+CONFIG_DRIVER_VIDEO_IMX_IPU=y
+
+#
+# Filesystem support            
+#
+# CONFIG_FS_CRAMFS is not set
+CONFIG_FS_RAMFS=y
+CONFIG_FS_DEVFS=y
+CONFIG_CRC32=y
+CONFIG_CRC16=y
+# CONFIG_GENERIC_FIND_NEXT_BIT is not set
+CONFIG_PROCESS_ESCAPE_SEQUENCE=y
+CONFIG_LZO_DECOMPRESS=y
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 419daab..afd8cae 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -4,6 +4,7 @@ config ARCH_TEXT_BASE
 	hex
 	default 0x83f00000 if MACH_EUKREA_CPUIMX25
 	default 0xa0000000 if MACH_EUKREA_CPUIMX27
+	default 0x87f00000 if MACH_EUKREA_CPUIMX35
 	default 0x08f00000 if MACH_MX1ADS
 	default 0xc0000000 if MACH_IMX21ADS
 	default 0xa0000000 if MACH_IMX27ADS
@@ -19,6 +20,7 @@ config ARCH_TEXT_BASE
 config BOARDINFO
 	default "Eukrea CPUIMX25" if MACH_EUKREA_CPUIMX25
 	default "Eukrea CPUIMX27" if MACH_EUKREA_CPUIMX27
+	default "Eukrea CPUIMX35" if MACH_EUKREA_CPUIMX35
 	default "Freescale i.MX21 ADS" if MACH_IMX21ADS
 	default "Freescale i.MX27 ADS" if MACH_IMX27ADS
 	default "Freescale MX35 3Stack" if MACH_FREESCALE_MX35_3STACK
@@ -223,6 +225,15 @@ choice
 
 	prompt "i.MX35 Board Type"
 
+config MACH_EUKREA_CPUIMX35
+	bool "EUKREA CPUIMX35"
+	select HAVE_MMU
+	select MACH_HAS_LOWLEVEL_INIT
+	select ARCH_HAS_L2X0
+	help
+	  Say Y here if you are using Eukrea's CPUIMX35 equipped
+	  with a Freescale i.MX35 Processor
+
 config MACH_FREESCALE_MX35_3STACK
 	bool "Freescale MX35 3stack"
 	select HAS_CFI
diff --git a/board/eukrea_cpuimx35/Makefile b/board/eukrea_cpuimx35/Makefile
new file mode 100644
index 0000000..32ffe42
--- /dev/null
+++ b/board/eukrea_cpuimx35/Makefile
@@ -0,0 +1,25 @@
+#
+# (C) Copyright 2007 Juergen Beisert <jbe@pengutronix.de>
+#
+# 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
+#
+
+obj-y					+= lowlevel.o
+obj-y					+= eukrea_cpuimx35.o
+obj-$(CONFIG_ARCH_IMX_INTERNAL_BOOT)	+= flash_header.o
diff --git a/board/eukrea_cpuimx35/config.h b/board/eukrea_cpuimx35/config.h
new file mode 100644
index 0000000..bfd3b39
--- /dev/null
+++ b/board/eukrea_cpuimx35/config.h
@@ -0,0 +1,23 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#define CONFIG_MX35_HCLK_FREQ        24000000
+
+#endif	/* __CONFIG_H */
diff --git a/board/eukrea_cpuimx35/env/bin/_update b/board/eukrea_cpuimx35/env/bin/_update
new file mode 100644
index 0000000..014bce3
--- /dev/null
+++ b/board/eukrea_cpuimx35/env/bin/_update
@@ -0,0 +1,36 @@
+#!/bin/sh
+
+if [ -z "$part" -o -z "$image" ]; then
+	echo "define \$part and \$image"
+	exit 1
+fi
+
+if [ ! -e "$part" ]; then
+	echo "Partition $part does not exist"
+	exit 1
+fi
+
+if [ $# = 1 ]; then
+	image=$1
+fi
+
+if [ x$ip = xdhcp ]; then
+	dhcp
+fi
+
+ping $eth0.serverip
+if [ $? -ne 0 ] ; then
+	echo "update aborted"
+	exit 1
+fi
+
+unprotect $part
+
+echo
+echo "erasing partition $part"
+erase $part
+
+echo
+echo "flashing $image to $part"
+echo
+tftp $image $part
diff --git a/board/eukrea_cpuimx35/env/bin/boot b/board/eukrea_cpuimx35/env/bin/boot
new file mode 100644
index 0000000..fca5b8c
--- /dev/null
+++ b/board/eukrea_cpuimx35/env/bin/boot
@@ -0,0 +1,52 @@
+#!/bin/sh
+
+. /env/config
+
+if [ x$1 = xjffS2 ]; then
+	root=jffs2
+	kernel=nand
+fi
+
+if [ x$1 = xubifs ]; then
+	root=ubifs
+	kernel=nand
+fi
+
+if [ x$1 = xnet ]; then
+	root=net
+	kernel=net
+fi
+
+if [ x$ip = xdhcp ]; then
+	bootargs="$bootargs ip=dhcp"
+else
+	if [ x$ip = xoff ]; then
+		bootargs="$bootargs ip=off"
+	else
+		bootargs="$bootargs ip=$eth0.ipaddr:$eth0.serverip:$eth0.gateway:$eth0.netmask:::"
+	fi
+fi
+
+if [ x$root = xjffs2 ]; then
+	bootargs="$bootargs root=/dev/mtdblock$rootpartnum_nand rootfstype=jffs2"
+fi
+
+if [ x$root = xubifs ]; then
+	bootargs="$bootargs root=ubi0:$ubiroot ubi.mtd=$rootpartnum_nand rootfstype=ubifs"
+fi
+
+if [ x$root = xnet ]; then
+	bootargs="$bootargs root=/dev/nfs nfsroot=$eth0.serverip:$nfsroot,v3,tcp"
+fi
+
+bootargs="$bootargs mtdparts=mxc_nand:$nand_parts"
+
+if [ $kernel = net ]; then
+	if [ x$ip = xdhcp ]; then
+		dhcp
+	fi
+	tftp $uimage uImage || exit 1
+	bootm uImage
+else
+	bootm /dev/nand0.kernel.bb
+fi
diff --git a/board/eukrea_cpuimx35/env/bin/hush_hack b/board/eukrea_cpuimx35/env/bin/hush_hack
new file mode 100644
index 0000000..5fffa92
--- /dev/null
+++ b/board/eukrea_cpuimx35/env/bin/hush_hack
@@ -0,0 +1 @@
+nand -a /dev/nand0.*
diff --git a/board/eukrea_cpuimx35/env/bin/init b/board/eukrea_cpuimx35/env/bin/init
new file mode 100644
index 0000000..49e54c5
--- /dev/null
+++ b/board/eukrea_cpuimx35/env/bin/init
@@ -0,0 +1,41 @@
+#!/bin/sh
+
+PATH=/env/bin
+export PATH
+
+. /env/config
+if [ -e /dev/nand0 ]; then
+	addpart /dev/nand0 $nand_parts
+
+	# Uh, oh, hush first expands wildcards and then starts executing
+	# commands. What a bug!
+	source /env/bin/hush_hack 
+fi
+
+if [ -f /env/logo.bmp ]; then
+	bmp /env/logo.bmp
+elif [ -f /env/logo.bmp.lzo ]; then
+	unlzo /env/logo.bmp.lzo /logo.bmp
+	bmp /logo.bmp
+fi
+
+if [ -z $eth0.ethaddr ]; then
+	while [ -z $eth0.ethaddr ]; do
+		readline "no MAC address set for eth0. please enter the one found on your board: " eth0.ethaddr
+	done
+	echo -a /env/config "eth0.ethaddr=$eth0.ethaddr"
+	saveenv
+fi
+
+echo
+echo -n "Hit any key to stop autoboot: "
+timeout -a $autoboot_timeout
+if [ $? != 0 ]; then
+	echo
+	echo "type update_kernel [<imagename>] to update kernel into flash"
+	echo "type update_root [<imagename>] to update rootfs into flash"
+	echo
+	exit
+fi
+
+boot
diff --git a/board/eukrea_cpuimx35/env/bin/update_kernel b/board/eukrea_cpuimx35/env/bin/update_kernel
new file mode 100644
index 0000000..c2d2cc3
--- /dev/null
+++ b/board/eukrea_cpuimx35/env/bin/update_kernel
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+. /env/config
+
+image=$uimage
+part=/dev/nand0.kernel.bb
+
+. /env/bin/_update $1
diff --git a/board/eukrea_cpuimx35/env/bin/update_root b/board/eukrea_cpuimx35/env/bin/update_root
new file mode 100644
index 0000000..dd89a5a
--- /dev/null
+++ b/board/eukrea_cpuimx35/env/bin/update_root
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+. /env/config
+
+image=$rootfs
+part=/dev/nand0.root.bb
+
+. /env/bin/_update $1
diff --git a/board/eukrea_cpuimx35/env/config b/board/eukrea_cpuimx35/env/config
new file mode 100644
index 0000000..df2079f
--- /dev/null
+++ b/board/eukrea_cpuimx35/env/config
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+# can be either 'net' or 'nand''
+kernel=nand
+root=ubifs
+
+basedir=cpuimx35
+uimage=$basedir/uImage
+rootfs=$basedir/rootfs
+
+autoboot_timeout=1
+
+nfsroot=""
+bootargs="console=ttymxc0,115200"
+
+nand_parts="256k(barebox)ro,128k(bareboxenv),2176k(kernel),-(root)"
+rootpartnum_nand=3
+ubiroot="eukrea-cpuimx35-rootfs"
+
+# use 'dhcp' to do dhcp in barebox and in kernel
+ip=off
+
+# or set your networking parameters here
+#eth0.ipaddr=a.b.c.d
+#eth0.netmask=a.b.c.d
+#eth0.gateway=a.b.c.d
+#eth0.serverip=a.b.c.d
diff --git a/board/eukrea_cpuimx35/eukrea_cpuimx35.c b/board/eukrea_cpuimx35/eukrea_cpuimx35.c
new file mode 100644
index 0000000..7f1c782
--- /dev/null
+++ b/board/eukrea_cpuimx35/eukrea_cpuimx35.c
@@ -0,0 +1,343 @@
+/*
+ * Copyright (C) 2007 Sascha Hauer, Pengutronix
+ *               2009 Marc Kleine-Budde, Pengutronix
+ * (c) 2010 Eukrea Electromatique, Eric Bénard <eric@eukrea.com>
+ *
+ * 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
+ *
+ * Derived from:
+ *
+ * * mx35_3stack.c - board file for uboot-v1
+ *   Copyright (C) 2007, Guennadi Liakhovetski <lg@denx.de>
+ *   (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
+ *
+ */
+
+#include <common.h>
+#include <command.h>
+#include <environment.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fec.h>
+#include <fs.h>
+#include <init.h>
+#include <nand.h>
+#include <net.h>
+#include <partition.h>
+
+#include <asm/armlinux.h>
+#include <asm/io.h>
+#include <asm/mach-types.h>
+#include <asm/mmu.h>
+
+#include <mach/gpio.h>
+#include <mach/imx-nand.h>
+#include <mach/imx-regs.h>
+#include <mach/iomux-mx35.h>
+#include <mach/iomux-v3.h>
+#include <mach/pmic.h>
+#include <mach/imx-ipu-fb.h>
+#include <mach/imx-pll.h>
+
+static struct fec_platform_data fec_info = {
+	.xcv_type	= MII100,
+	.phy_addr	= 0x1F,
+};
+
+static struct device_d fec_dev = {
+	.name		= "fec_imx",
+	.map_base	= IMX_FEC_BASE,
+	.platform_data	= &fec_info,
+};
+
+static struct memory_platform_data sdram_pdata = {
+	.name	= "ram0",
+	.flags	= DEVFS_RDWR,
+};
+
+static struct device_d sdram_dev = {
+	.name		= "mem",
+	.map_base	= IMX_SDRAM_CS0,
+	.size		= 128 * 1024 * 1024,
+	.platform_data	= &sdram_pdata,
+};
+
+struct imx_nand_platform_data nand_info = {
+	.width		= 1,
+	.hw_ecc		= 1,
+	.flash_bbt	= 1,
+};
+
+static struct device_d nand_dev = {
+	.name		= "imx_nand",
+	.map_base	= IMX_NFC_BASE,
+	.platform_data	= &nand_info,
+};
+
+static struct fb_videomode imxfb_mode = {
+	.name		= "CMO_QVGA",
+	.refresh	= 60,
+	.xres		= 320,
+	.yres		= 240,
+	.pixclock	= KHZ2PICOS(7000),
+	.left_margin	= 68,
+	.right_margin	= 20,
+	.upper_margin	= 15,
+	.lower_margin	= 4,
+	.hsync_len	= 30,
+	.vsync_len	= 3,
+	.sync		= FB_SYNC_OE_ACT_HIGH,
+	.vmode		= FB_VMODE_NONINTERLACED,
+	.flag		= 0,
+};
+
+static struct imx_ipu_fb_platform_data ipu_fb_data = {
+	.mode		= &imxfb_mode,
+	.bpp		= 16,
+};
+
+static struct device_d imxfb_dev = {
+	.name		= "imx-ipu-fb",
+	.map_base	= 0x53fc0000,
+	.size		= 0x1000,
+	.platform_data	= &ipu_fb_data,
+};
+
+#ifdef CONFIG_MMU
+static int eukrea_cpuimx35_mmu_init(void)
+{
+	mmu_init();
+
+	arm_create_section(0x80000000, 0x80000000, 128, PMD_SECT_DEF_CACHED);
+	arm_create_section(0x90000000, 0x80000000, 128, PMD_SECT_DEF_UNCACHED);
+
+	setup_dma_coherent(0x10000000);
+
+#if TEXT_BASE & (0x100000 - 1)
+#warning cannot create vector section. Adjust TEXT_BASE to a 1M boundary
+#else
+	arm_create_section(0x0,        TEXT_BASE,   1, PMD_SECT_DEF_UNCACHED);
+#endif
+	mmu_enable();
+
+#ifdef CONFIG_CACHE_L2X0
+	l2x0_init((void __iomem *)0x30000000, 0x00030024, 0x00000000);
+#endif
+	return 0;
+}
+postcore_initcall(eukrea_cpuimx35_mmu_init);
+#endif
+
+static int eukrea_cpuimx35_devices_init(void)
+{
+	register_device(&nand_dev);
+
+	devfs_add_partition("nand0", 0x00000, 0x40000, PARTITION_FIXED, "self_raw");
+	dev_add_bb_dev("self_raw", "self0");
+	devfs_add_partition("nand0", 0x40000, 0x20000, PARTITION_FIXED, "env_raw");
+	dev_add_bb_dev("env_raw", "env0");
+
+	register_device(&fec_dev);
+
+	register_device(&sdram_dev);
+	register_device(&imxfb_dev);
+
+	armlinux_add_dram(&sdram_dev);
+	armlinux_set_bootparams((void *)0x80000100);
+	armlinux_set_architecture(MACH_TYPE_EUKREA_CPUIMX35);
+
+	return 0;
+}
+
+device_initcall(eukrea_cpuimx35_devices_init);
+
+static int eukrea_cpuimx35_enable_display(void)
+{
+	gpio_direction_output(1, 1);
+	gpio_direction_output(0, 0);
+	return 0;
+}
+
+late_initcall(eukrea_cpuimx35_enable_display);
+
+static struct device_d eukrea_cpuimx35_serial_device = {
+	.name		= "imx_serial",
+	.map_base	= IMX_UART1_BASE,
+	.size		= 4096,
+};
+
+static struct pad_desc eukrea_cpuimx35_pads[] = {
+	MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
+	MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
+	MX35_PAD_FEC_RX_DV__FEC_RX_DV,
+	MX35_PAD_FEC_COL__FEC_COL,
+	MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
+	MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
+	MX35_PAD_FEC_TX_EN__FEC_TX_EN,
+	MX35_PAD_FEC_MDC__FEC_MDC,
+	MX35_PAD_FEC_MDIO__FEC_MDIO,
+	MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
+	MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
+	MX35_PAD_FEC_CRS__FEC_CRS,
+	MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
+	MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
+	MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
+	MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
+	MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
+	MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
+	MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
+	MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
+
+	MX35_PAD_RXD1__UART1_RXD_MUX,
+	MX35_PAD_TXD1__UART1_TXD_MUX,
+	MX35_PAD_RTS1__UART1_RTS,
+	MX35_PAD_CTS1__UART1_CTS,
+};
+
+static int eukrea_cpuimx35_console_init(void)
+{
+	mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx35_pads,
+		ARRAY_SIZE(eukrea_cpuimx35_pads));
+
+	register_device(&eukrea_cpuimx35_serial_device);
+	return 0;
+}
+
+console_initcall(eukrea_cpuimx35_console_init);
+
+static int eukrea_cpuimx35_core_init(void)
+{
+	u32 reg;
+
+	/* enable clock for I2C1 and FEC */
+	reg = readl(IMX_CCM_BASE + CCM_CGR1);
+	reg |= 0x3 << CCM_CGR1_FEC_SHIFT;
+	reg = writel(reg, IMX_CCM_BASE + CCM_CGR1);
+
+	/* AIPS setup - Only setup MPROTx registers. The PACR default values are good.*/
+	/*
+	 * Set all MPROTx to be non-bufferable, trusted for R/W,
+	 * not forced to user-mode.
+	 */
+	writel(0x77777777, IMX_AIPS1_BASE);
+	writel(0x77777777, IMX_AIPS1_BASE + 0x4);
+	writel(0x77777777, IMX_AIPS2_BASE);
+	writel(0x77777777, IMX_AIPS2_BASE + 0x4);
+
+	/*
+	 * Clear the on and off peripheral modules Supervisor Protect bit
+	 * for SDMA to access them. Did not change the AIPS control registers
+	 * (offset 0x20) access type
+	 */
+	writel(0x0, IMX_AIPS1_BASE + 0x40);
+	writel(0x0, IMX_AIPS1_BASE + 0x44);
+	writel(0x0, IMX_AIPS1_BASE + 0x48);
+	writel(0x0, IMX_AIPS1_BASE + 0x4C);
+	reg = readl(IMX_AIPS1_BASE + 0x50);
+	reg &= 0x00FFFFFF;
+	writel(reg, IMX_AIPS1_BASE + 0x50);
+
+	writel(0x0, IMX_AIPS2_BASE + 0x40);
+	writel(0x0, IMX_AIPS2_BASE + 0x44);
+	writel(0x0, IMX_AIPS2_BASE + 0x48);
+	writel(0x0, IMX_AIPS2_BASE + 0x4C);
+	reg = readl(IMX_AIPS2_BASE + 0x50);
+	reg &= 0x00FFFFFF;
+	writel(reg, IMX_AIPS2_BASE + 0x50);
+
+	/* MAX (Multi-Layer AHB Crossbar Switch) setup */
+
+	/* MPR - priority is M4 > M2 > M3 > M5 > M0 > M1 */
+#define MAX_PARAM1 0x00302154
+	writel(MAX_PARAM1, IMX_MAX_BASE + 0x000); /* for S0 */
+	writel(MAX_PARAM1, IMX_MAX_BASE + 0x100); /* for S1 */
+	writel(MAX_PARAM1, IMX_MAX_BASE + 0x200); /* for S2 */
+	writel(MAX_PARAM1, IMX_MAX_BASE + 0x300); /* for S3 */
+	writel(MAX_PARAM1, IMX_MAX_BASE + 0x400); /* for S4 */
+
+	/* SGPCR - always park on last master */
+	writel(0x10, IMX_MAX_BASE + 0x10);	/* for S0 */
+	writel(0x10, IMX_MAX_BASE + 0x110);	/* for S1 */
+	writel(0x10, IMX_MAX_BASE + 0x210);	/* for S2 */
+	writel(0x10, IMX_MAX_BASE + 0x310);	/* for S3 */
+	writel(0x10, IMX_MAX_BASE + 0x410);	/* for S4 */
+
+	/* MGPCR - restore default values */
+	writel(0x0, IMX_MAX_BASE + 0x800);	/* for M0 */
+	writel(0x0, IMX_MAX_BASE + 0x900);	/* for M1 */
+	writel(0x0, IMX_MAX_BASE + 0xa00);	/* for M2 */
+	writel(0x0, IMX_MAX_BASE + 0xb00);	/* for M3 */
+	writel(0x0, IMX_MAX_BASE + 0xc00);	/* for M4 */
+	writel(0x0, IMX_MAX_BASE + 0xd00);	/* for M5 */
+
+	/*
+	 * M3IF Control Register (M3IFCTL)
+	 * MRRP[0] = L2CC0 not on priority list (0 << 0)	= 0x00000000
+	 * MRRP[1] = MAX1 not on priority list (0 << 0)		= 0x00000000
+	 * MRRP[2] = L2CC1 not on priority list (0 << 0)	= 0x00000000
+	 * MRRP[3] = USB  not on priority list (0 << 0)		= 0x00000000
+	 * MRRP[4] = SDMA not on priority list (0 << 0)		= 0x00000000
+	 * MRRP[5] = GPU not on priority list (0 << 0)		= 0x00000000
+	 * MRRP[6] = IPU1 on priority list (1 << 6)		= 0x00000040
+	 * MRRP[7] = IPU2 not on priority list (0 << 0)		= 0x00000000
+	 *                                                       ------------
+	 *                                                        0x00000040
+	 */
+	writel(0x40, IMX_M3IF_BASE);
+
+	return 0;
+}
+
+core_initcall(eukrea_cpuimx35_core_init);
+
+#define MPCTL_PARAM_399     (IMX_PLL_PD(0) | IMX_PLL_MFD(15) | IMX_PLL_MFI(8) | IMX_PLL_MFN(5))
+#define MPCTL_PARAM_532     ((1 << 31) | IMX_PLL_PD(0) | IMX_PLL_MFD(11) | IMX_PLL_MFI(11) | IMX_PLL_MFN(1))
+
+static int do_cpufreq(struct command *cmdtp, int argc, char *argv[])
+{
+	unsigned long freq;
+
+	if (argc != 2)
+		return COMMAND_ERROR_USAGE;
+
+	freq = simple_strtoul(argv[1], NULL, 0);
+
+	switch (freq) {
+	case 399:
+		writel(MPCTL_PARAM_399, IMX_CCM_BASE + CCM_MPCTL);
+		break;
+	case 532:
+		writel(MPCTL_PARAM_532, IMX_CCM_BASE + CCM_MPCTL);
+		break;
+	default:
+		return COMMAND_ERROR_USAGE;
+	}
+
+	printf("Switched CPU frequency to %dMHz\n", freq);
+
+	return 0;
+}
+
+static const __maybe_unused char cmd_cpufreq_help[] =
+"Usage: cpufreq 399|532\n"
+"\n"
+"Set CPU frequency to <freq> MHz\n";
+
+BAREBOX_CMD_START(cpufreq)
+	.cmd            = do_cpufreq,
+	.usage          = "adjust CPU frequency",
+	BAREBOX_CMD_HELP(cmd_cpufreq_help)
+BAREBOX_CMD_END
diff --git a/board/eukrea_cpuimx35/eukrea_cpuimx35.dox b/board/eukrea_cpuimx35/eukrea_cpuimx35.dox
new file mode 100644
index 0000000..cbdf69d
--- /dev/null
+++ b/board/eukrea_cpuimx35/eukrea_cpuimx35.dox
@@ -0,0 +1,4 @@
+/** @page eukrea_cpuimx35 Eukrea's CPUIMX35
+
+
+*/
diff --git a/board/eukrea_cpuimx35/flash_header.c b/board/eukrea_cpuimx35/flash_header.c
new file mode 100644
index 0000000..a0ccf5c
--- /dev/null
+++ b/board/eukrea_cpuimx35/flash_header.c
@@ -0,0 +1,60 @@
+#include <common.h>
+#include <mach/imx-flash-header.h>
+
+extern unsigned long _stext;
+
+void __naked __flash_header_start go(void)
+{
+	__asm__ __volatile__("b exception_vectors\n");
+}
+
+struct imx_dcd_entry __dcd_entry_0x400 dcd_entry[] = {
+	{ .ptr_type = 4, .addr = 0xB8001010, .val = 0x00000004, },
+	{ .ptr_type = 4, .addr = 0xB8001010, .val = 0x0000000C, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc3f, },
+	{ .ptr_type = 4, .addr = 0xB8001000, .val = 0x92220000, },
+	{ .ptr_type = 1, .addr = 0x80000400, .val = 0x12345678, },
+	{ .ptr_type = 4, .addr = 0xB8001000, .val = 0xA2220000, },
+	{ .ptr_type = 1, .addr = 0x80000000, .val = 0x87654321, },
+	{ .ptr_type = 1, .addr = 0x80000000, .val = 0x87654321, },
+	{ .ptr_type = 4, .addr = 0xB8001000, .val = 0xB2220000, },
+	{ .ptr_type = 1, .addr = 0x80000033, .val = 0xda, },
+	{ .ptr_type = 1, .addr = 0x82000000, .val = 0xda, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001004, .val = 0x007ffc2f, },
+	{ .ptr_type = 4, .addr = 0xB8001000, .val = 0x82220080, },
+	{ .ptr_type = 4, .addr = 0xB8001000, .val = 0x82228080, },
+	{ .ptr_type = 4, .addr = 0xB8001020, .val = 0x80000028, },
+	{ .ptr_type = 4, .addr = 0xB8001024, .val = 0x80000028, },
+	{ .ptr_type = 4, .addr = 0xB8001028, .val = 0x80000028, },
+	{ .ptr_type = 4, .addr = 0xB800102c, .val = 0x80000028, },
+	{ .ptr_type = 4, .addr = 0xB8001030, .val = 0x80000028, },
+};
+
+#define APP_DEST	0x80000000
+
+struct imx_flash_header __flash_header_0x400 flash_header = {
+	.app_code_jump_vector	= APP_DEST + 0x1000,
+	.app_code_barker	= APP_CODE_BARKER,
+	.app_code_csf		= 0,
+	.dcd_ptr_ptr		= APP_DEST + 0x400 + offsetof(struct imx_flash_header, dcd),
+	.super_root_key		= 0,
+	.dcd			= APP_DEST + 0x400 + offsetof(struct imx_flash_header, dcd_barker),
+	.app_dest		= APP_DEST,
+	.dcd_barker		= DCD_BARKER,
+	.dcd_block_len		= sizeof (dcd_entry),
+};
+
+unsigned long __image_len_0x400 barebox_len = 0x40000;
+
diff --git a/board/eukrea_cpuimx35/lowlevel.c b/board/eukrea_cpuimx35/lowlevel.c
new file mode 100644
index 0000000..44f3cf0
--- /dev/null
+++ b/board/eukrea_cpuimx35/lowlevel.c
@@ -0,0 +1,218 @@
+/*
+ *
+ * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * 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 <init.h>
+#include <mach/imx-regs.h>
+#include <mach/imx-pll.h>
+#include <mach/esdctl.h>
+#include <asm/cache-l2x0.h>
+#include <asm/io.h>
+#include <mach/imx-nand.h>
+#include <asm/barebox-arm.h>
+#include <asm-generic/memory_layout.h>
+#include <asm/system.h>
+
+/* Assuming 24MHz input clock */
+#define MPCTL_PARAM_399     (IMX_PLL_PD(0) | IMX_PLL_MFD(15) | IMX_PLL_MFI(8) | IMX_PLL_MFN(5))
+#define MPCTL_PARAM_532     ((1 << 31) | IMX_PLL_PD(0) | IMX_PLL_MFD(11) | IMX_PLL_MFI(11) | IMX_PLL_MFN(1))
+#define PPCTL_PARAM_300     (IMX_PLL_PD(0) | IMX_PLL_MFD(3) | IMX_PLL_MFI(6) | IMX_PLL_MFN(1))
+
+#ifdef CONFIG_NAND_IMX_BOOT
+static void __bare_init __naked insdram(void)
+{
+	uint32_t r;
+
+	/* Speed up NAND controller by adjusting the NFC divider */
+	r = readl(IMX_CCM_BASE + CCM_PDR4);
+	r &= ~(0xf << 28);
+	r |= 0x1 << 28;
+	writel(r, IMX_CCM_BASE + CCM_PDR4);
+
+	/* setup a stack to be able to call imx_nand_load_image() */
+	r = STACK_BASE + STACK_SIZE - 12;
+	__asm__ __volatile__("mov sp, %0" : : "r"(r));
+
+	imx_nand_load_image((void *)TEXT_BASE, 256 * 1024);
+
+	board_init_lowlevel_return();
+}
+#endif
+
+void __bare_init __naked board_init_lowlevel(void)
+{
+	uint32_t r, s;
+	unsigned long ccm_base = IMX_CCM_BASE;
+	unsigned long iomuxc_base = IMX_IOMUXC_BASE;
+#ifdef CONFIG_NAND_IMX_BOOT
+	unsigned int *trg, *src;
+	int i;
+#endif
+
+	r = get_cr();
+	r |= CR_Z; /* Flow prediction (Z) */
+	r |= CR_U; /* unaligned accesses  */
+	r |= CR_FI; /* Low Int Latency     */
+
+	__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(s));
+	s |= 0x7;
+	__asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1" : : "r"(s));
+
+	set_cr(r);
+
+	r = 0;
+	__asm__ __volatile__("mcr p15, 0, %0, c15, c2, 4" : : "r"(r));
+
+	/*
+	 * Branch predicition is now enabled.  Flush the BTAC to ensure a valid
+	 * starting point.  Don't flush BTAC while it is disabled to avoid
+	 * ARM1136 erratum 408023.
+	 */
+	__asm__ __volatile__("mcr p15, 0, %0, c7, c5, 6" : : "r"(r));
+
+	/* invalidate I cache and D cache */
+	__asm__ __volatile__("mcr p15, 0, %0, c7, c7, 0" : : "r"(r));
+
+	/* invalidate TLBs */
+	__asm__ __volatile__("mcr p15, 0, %0, c8, c7, 0" : : "r"(r));
+
+	/* Drain the write buffer */
+	__asm__ __volatile__("mcr p15, 0, %0, c7, c10, 4" : : "r"(r));
+
+	/* Also setup the Peripheral Port Remap register inside the core */
+	r = 0x40000015; /* start from AIPS 2GB region */
+	__asm__ __volatile__("mcr p15, 0, %0, c15, c2, 4" : : "r"(r));
+
+	/*
+	 * End of ARM1136 init
+	 */
+
+	writel(0x003F4208, ccm_base + CCM_CCMR);
+
+	/* Set MPLL , arm clock and ahb clock*/
+	writel(MPCTL_PARAM_532, ccm_base + CCM_MPCTL);
+
+	writel(PPCTL_PARAM_300, ccm_base + CCM_PPCTL);
+	writel(0x00001000, ccm_base + CCM_PDR0);
+
+	r = readl(ccm_base + CCM_CGR0);
+	r |= 0x00300000;
+	writel(r, ccm_base + CCM_CGR0);
+
+	r = readl(ccm_base + CCM_CGR1);
+	r |= 0x00000C00;
+	r |= 0x00000003;
+	writel(r, ccm_base + CCM_CGR1);
+
+	r = readl(IMX_L2CC_BASE + L2X0_AUX_CTRL);
+	r |= 0x1000;
+	writel(r, IMX_L2CC_BASE + L2X0_AUX_CTRL);
+
+	/* Skip SDRAM initialization if we run from RAM */
+	r = get_pc();
+	if (r > 0x80000000 && r < 0x90000000)
+		board_init_lowlevel_return();
+
+	/* Set DDR Type to SDRAM, drive strength workaround	*
+	 * 0x00000000	MDDR					*
+	 * 0x00000800	3,3V SDRAM				*/
+
+	r = 0x00000800;
+	writel(r, iomuxc_base + 0x794);
+	writel(r, iomuxc_base + 0x798);
+	writel(r, iomuxc_base + 0x79c);
+	writel(r, iomuxc_base + 0x7a0);
+	writel(r, iomuxc_base + 0x7a4);
+
+	/* MDDR init, enable mDDR*/
+	writel(0x00000304, ESDMISC); /* was 0x00000004 */
+
+	/* set timing paramters */
+	writel(0x00255417, ESDCFG0);
+	/* select Precharge-All mode */
+	writel(0x92220000, ESDCTL0);
+	/* Precharge-All */
+	writel(0x12345678, IMX_SDRAM_CS0 + 0x400);
+
+	/* select Load-Mode-Register mode */
+	writel(0xB8001000, ESDCTL0);
+	/* Load reg EMR2 */
+	writeb(0xda, 0x84000000);
+	/* Load reg EMR3 */
+	writeb(0xda, 0x86000000);
+	/* Load reg EMR1 -- enable DLL */
+	writeb(0xda, 0x82000400);
+	/* Load reg MR -- reset DLL */
+	writeb(0xda, 0x80000333);
+
+	/* select Precharge-All mode */
+	writel(0x92220000, ESDCTL0);
+	/* Precharge-All */
+	writel(0x12345678, IMX_SDRAM_CS0 + 0x400);
+
+	/* select Manual-Refresh mode */
+	writel(0xA2220000, ESDCTL0);
+	/* Manual-Refresh 2 times */
+	writel(0x87654321, IMX_SDRAM_CS0);
+	writel(0x87654321, IMX_SDRAM_CS0);
+
+	/* select Load-Mode-Register mode */
+	writel(0xB2220000, ESDCTL0);
+	/* Load reg MR -- CL3, BL8, end DLL reset */
+	writeb(0xda, 0x80000233);
+	/* Load reg EMR1 -- OCD default */
+	writeb(0xda, 0x82000780);
+	/* Load reg EMR1 -- OCD exit */
+	writeb(0xda, 0x82000400);
+
+	/* select normal-operation mode
+	 * DSIZ32-bit, BL8, COL10-bit, ROW13-bit
+	 * disable PWT & PRCT
+	 * disable Auto-Refresh */
+	writel(0x82220080, ESDCTL0);
+
+	/* enable Auto-Refresh */
+	writel(0x82228080, ESDCTL0);
+	/* enable Auto-Refresh */
+	writel(0x00002000, ESDCTL1);
+
+#ifdef CONFIG_NAND_IMX_BOOT
+	/* skip NAND boot if not running from NFC space */
+	r = get_pc();
+	if (r < IMX_NFC_BASE || r > IMX_NFC_BASE + 0x800)
+		board_init_lowlevel_return();
+
+	src = (unsigned int *)IMX_NFC_BASE;
+	trg = (unsigned int *)TEXT_BASE;
+
+	/* Move ourselves out of NFC SRAM */
+	for (i = 0; i < 0x800 / sizeof(int); i++)
+		*trg++ = *src++;
+
+	/* Jump to SDRAM */
+	r = (unsigned int)&insdram;
+	__asm__ __volatile__("mov pc, %0" : : "r"(r));
+#else
+	board_init_lowlevel_return();
+#endif
+}
+
-- 
1.6.3.3


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