Add the i.MX23-EVK platform (WIP)

Note: This is work in progress. Use with care.

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>

Documentation/boards.dox

@@ -14,6 +14,7 @@ ARM type:
 @li @subpage imx21ads
 @li @subpage imx27ads
 @li @subpage the3stack
+@li @subpage mx23_evk
 @li @subpage scb9328
 @li @subpage netx
 @li @subpage dev_omap_arch

arch/arm/Makefile

@@ -41,6 +41,7 @@ CPPFLAGS += $(CFLAGS_ABI) $(arch-y) $(tune-y)
 machine-$(CONFIG_ARCH_AT91)		:= at91
 machine-$(CONFIG_ARCH_EP93XX)		:= ep93xx
 machine-$(CONFIG_ARCH_IMX)		:= imx
+machine-$(CONFIG_ARCH_STM)		:= stm
 machine-$(CONFIG_ARCH_NOMADIK)		:= nomadik
 machine-$(CONFIG_ARCH_NETX)		:= netx
 machine-$(CONFIG_ARCH_OMAP)		:= omap
@@ -80,6 +81,7 @@ board-$(CONFIG_MACH_PCM043)			:= pcm043
 board-$(CONFIG_MACH_PM9263)			:= pm9263
 board-$(CONFIG_MACH_SCB9328)			:= scb9328
 board-$(CONFIG_MACH_NESO)			:= guf-neso
+board-$(CONFIG_MACH_MX23EVK)			:= freescale-mx23-evk
 
 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
 

arch/arm/boards/freescale-mx23-evk/Makefile

@@ -0,0 +1,2 @@
+#
+obj-y := mx23-evk.o

arch/arm/boards/freescale-mx23-evk/config.h

@@ -0,0 +1,16 @@
+/*
+ * 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
+ */

arch/arm/boards/freescale-mx23-evk/mx23-evk.c

@@ -0,0 +1,96 @@
+/*
+ * (C) Copyright 2010 Juergen Beisert - Pengutronix
+ *
+ * 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 <gpio.h>
+#include <environment.h>
+#include <asm/armlinux.h>
+#include <generated/mach-types.h>
+#include <mach/imx-regs.h>
+
+static struct memory_platform_data ram_pdata = {
+	.name = "ram0",
+	.flags = DEVFS_RDWR,
+};
+
+static struct device_d sdram_dev = {
+	.name     = "mem",
+	.map_base = IMX_MEMORY_BASE,
+	.size     = 32 * 1024 * 1024,
+	.platform_data = &ram_pdata,
+};
+
+static int mx23_evk_devices_init(void)
+{
+	register_device(&sdram_dev);
+
+	armlinux_add_dram(&sdram_dev);
+	armlinux_set_bootparams((void*)(sdram_dev.map_base + 0x100));
+	armlinux_set_architecture(MACH_TYPE_MX23EVK);
+
+	return 0;
+}
+
+device_initcall(mx23_evk_devices_init);
+
+static struct device_d mx23_evk_serial_device = {
+	.name     = "stm_serial",
+	.map_base = IMX_DBGUART_BASE,
+	.size     = 8192,
+};
+
+static int mx23_evk_console_init(void)
+{
+	return register_device(&mx23_evk_serial_device);
+}
+
+console_initcall(mx23_evk_console_init);
+
+/** @page mx23_evk Freescale's i.MX23 evaluation kit
+
+This CPU card is based on an i.MX23 CPU. The card is shipped with:
+
+- 32 MiB synchronous dynamic RAM (mobile DDR type)
+- ENC28j60 based network (over SPI)
+
+Memory layout when @b barebox is running:
+
+- 0x40000000 start of SDRAM
+- 0x40000100 start of kernel's boot parameters
+  - below malloc area: stack area
+  - below barebox: malloc area
+- 0x41000000 start of @b barebox
+
+@section get_imx23evk_binary How to get the bootloader binary image:
+
+Using the default configuration:
+
+@verbatim
+make ARCH=arm imx23evk_defconfig
+@endverbatim
+
+Build the bootloader binary image:
+
+@verbatim
+make ARCH=arm CROSS_COMPILE=armv5compiler
+@endverbatim
+
+@note replace the armv5compiler with your ARM v5 cross compiler.
+*/

arch/arm/configs/imx23evk_defconfig

@@ -0,0 +1,24 @@
+CONFIG_ARCH_STM=y
+CONFIG_AEABI=y
+CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS=y
+CONFIG_BROKEN=y
+CONFIG_LONGHELP=y
+CONFIG_CMDLINE_EDITING=y
+CONFIG_AUTO_COMPLETE=y
+CONFIG_PARTITION=y
+# CONFIG_DEFAULT_ENVIRONMENT is not set
+CONFIG_DEBUG_INFO=y
+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_ECHO_E=y
+CONFIG_CMD_MTEST=y
+CONFIG_CMD_MTEST_ALTERNATIVE=y
+CONFIG_CMD_RESET=y
+CONFIG_CMD_TIMEOUT=y
+CONFIG_CMD_PARTITION=y
+# CONFIG_SPI is not set

arch/arm/mach-stm/Kconfig

@@ -2,8 +2,10 @@ if ARCH_STM
 
 config ARCH_TEXT_BASE
 	hex
+	default 0x41000000 if MACH_MX23EVK
 
 config BOARDINFO
+	default "Freescale i.MX23-EVK" if MACH_MX23EVK
 
 comment "SigmaTel/Freescale i.MX System-on-Chip"
 
@@ -21,6 +23,11 @@ if ARCH_IMX23
 choice
 	prompt "i.MX23 Board Type"
 
+config MACH_MX23EVK
+	bool "mx23-evk"
+	help
+	  Say Y here if you are using the Freescale i.MX23-EVK board
+
 endchoice
 
 endif