[U-Boot] Subject: [PATCH v3] mx27ads: add support for iMX27ADS board from Freescale
Fred Fan
fanyefeng at gmail.com
Mon Sep 21 15:04:06 CEST 2009
Dear Alan Carvalho de Assis,
2009/9/16 Alan Carvalho de Assis <acassis at gmail.com>
> This patch adds support to iMX27ADS development board. This board has
> 128MB RAM, 32MB NOR Flash and 128MB NAND Flash. Currently only
> booting from NOR is supported.
>
> Signed-off-by: Alan Carvalho de Assis <acassis at gmail.com>
> ---
> MAINTAINERS | 3 +
> MAKEALL | 1 +
> Makefile | 3 +
> board/freescale/mx27ads/Makefile | 51 ++++++++
> board/freescale/mx27ads/config.mk | 1 +
> board/freescale/mx27ads/lowlevel_init.S | 127 +++++++++++++++++++
> board/freescale/mx27ads/mx27ads.c | 93 ++++++++++++++
> board/freescale/mx27ads/u-boot.lds | 56 +++++++++
> include/configs/mx27ads.h | 202
> +++++++++++++++++++++++++++++++
> 9 files changed, 537 insertions(+), 0 deletions(-)
> create mode 100644 board/freescale/mx27ads/Makefile
> create mode 100644 board/freescale/mx27ads/config.mk
> create mode 100644 board/freescale/mx27ads/lowlevel_init.S
> create mode 100644 board/freescale/mx27ads/mx27ads.c
> create mode 100644 board/freescale/mx27ads/u-boot.lds
> create mode 100644 include/configs/mx27ads.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index e9db278..7ff3160 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -512,6 +512,9 @@ Unknown / orphaned boards:
> # Board CPU #
> #########################################################################
>
> +Alan Carvalho de Assis <acassis at gmail.com>
> + mx27ads i.MX27
> +
> Rowel Atienza <rowel at diwalabs.com>
>
> armadillo ARM720T
> diff --git a/MAKEALL b/MAKEALL
> index f0ed8ea..56b4446 100755
> --- a/MAKEALL
> +++ b/MAKEALL
> @@ -525,6 +525,7 @@ LIST_ARM9=" \
> mv88f6281gtw_ge \
> mx1ads \
> mx1fs2 \
> + mx27ads \
> netstar \
> nhk8815 \
> nhk8815_onenand \
> diff --git a/Makefile b/Makefile
> index 9764cea..4f2dcef 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -2965,6 +2965,9 @@ davinci_dm365evm_config : unconfig
> imx27lite_config: unconfig
> @$(MKCONFIG) $(@:_config=) arm arm926ejs imx27lite logicpd mx27
>
> +mx27ads_config : unconfig
> + @$(MKCONFIG) $(@:_config=) arm arm926ejs mx27ads freescale mx27
> +
> lpd7a400_config \
> lpd7a404_config: unconfig
> @$(MKCONFIG) $(@:_config=) arm lh7a40x lpd7a40x
> diff --git a/board/freescale/mx27ads/Makefile
> b/board/freescale/mx27ads/Makefile
> new file mode 100644
> index 0000000..d142a9e
> --- /dev/null
> +++ b/board/freescale/mx27ads/Makefile
> @@ -0,0 +1,51 @@
> +#
> +# (C) Copyright 2000-2004
> +# Wolfgang Denk, DENX Software Engineering, wd at denx.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 $(TOPDIR)/config.mk
> +
> +LIB = $(obj)lib$(BOARD).a
> +
> +COBJS := mx27ads.o
> +SOBJS := lowlevel_init.o
> +
> +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
> +OBJS := $(addprefix $(obj),$(COBJS))
> +SOBJS := $(addprefix $(obj),$(SOBJS))
> +
> +$(LIB): $(obj).depend $(OBJS) $(SOBJS)
> + $(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
> +
> +clean:
> + rm -f $(SOBJS) $(OBJS)
> +
> +distclean: clean
> + rm -f $(LIB) core *.bak $(obj).depend
> +
> +#########################################################################
> +
> +include $(SRCTREE)/rules.mk
> +
> +sinclude $(obj).depend
> +
> +#########################################################################
> +
> diff --git a/board/freescale/mx27ads/config.mk
> b/board/freescale/mx27ads/config.mk
> new file mode 100644
> index 0000000..a2e7768
> --- /dev/null
> +++ b/board/freescale/mx27ads/config.mk
> @@ -0,0 +1 @@
> +TEXT_BASE = 0xA7F00000
> diff --git a/board/freescale/mx27ads/lowlevel_init.S
> b/board/freescale/mx27ads/lowlevel_init.S
> new file mode 100644
> index 0000000..dc62a93
> --- /dev/null
> +++ b/board/freescale/mx27ads/lowlevel_init.S
> @@ -0,0 +1,127 @@
> +/*
> + * Copyright (C) 2008, Guennadi Liakhovetski <lg at denx.de>
> + *
> + * 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
> + */
> +
> +/*
> + * For clock initialization, see chapter 3 of the "MCIMX27 Multimedia
> + * Applications Processor Reference Manual, Rev. 0.2".
> + *
> + */
> +
> +#include <config.h>
> +#include <asm/macro.h>
> +#include <asm/arch/imx-regs.h>
> +#include <asm/arch/asm-offsets.h>
> +
> +.macro sdram_init
> + /*
> + * DDR on CSD0
> + */
> + write32 0xD8001010, 0x00000008
> + write32 0x10027828, 0x55555555
> + write32 0x10027830, 0x55555555
> + write32 0x10027834, 0x55555555
> + write32 0x10027838, 0x00005005
> + write32 0x1002783C, 0x15555555
> + write32 0xD8001010, 0x00000004
> + write32 0xD8001004, 0x006ac73a
> + write32 0xD8001000, 0x92100000
> + write32 0xA0000F00, 0x00000000
> + write32 0xD8001000, 0xA2100000
> + write32 0xA0000F00, 0x00000000
> + write32 0xA0000F00, 0x00000000
> + write32 0xA0000F00, 0x00000000
> + write32 0xA0000F00, 0x00000000
> + write32 0xD8001000, 0xA2200000
> + write32 0xA0000F00, 0x00000000
> + write32 0xA0000F00, 0x00000000
> + write32 0xA0000F00, 0x00000000
> + write32 0xA0000F00, 0x00000000
> + write32 0xD8001000, 0xb2100000
+ ldr r0, =0xA0000033
> + mov r1, #0xda
> + strb r1, [r0]
> + ldr r0, =0xA1000000
> + mov r1, #0xff
> + strb r1, [r0]
> + write32 0xD8001000, 0x82226080
Please use the friendly register definition.
>
+.endm
> +
> +.globl lowlevel_init
> +lowlevel_init:
> +
> + mov r10, lr
> +
> + /* ahb lite ip interface */
> + write32 AIPI1_PSR0, 0x20040304
> + write32 AIPI1_PSR1, 0xDFFBFCFB
> + write32 AIPI2_PSR0, 0x00000000
> + write32 AIPI2_PSR1, 0xFFFFFFFF
> +
> + /* disable mpll/spll */
> + ldr r0, =CSCR
> + ldr r1, [r0]
> + bic r1, r1, #0x03
> + str r1, [r0]
> +
> + /*
> + * pll clock initialization - see section 3.4.3 of the i.MX27
> manual
> + *
> + * FIXME: Using the 399*2 MHz values from table 3-8 doens't work
> + * with 1.2 V core voltage! Find out if this is
> + * documented somewhere.
> + */
> + write32 MPCTL0, 0x1EF15D5 /* MPLL = 199.5*2 MHz
> */
> + write32 SPCTL0, 0x043A1C09 /* SPLL = FIXME (needs review)
> */
>
I will check the setting in another mail.
> +
> + /*
> + * ARM clock = (399 MHz / 2) / (ARM divider = 1) = 200 MHz
> + * AHB clock = (399 MHz / 3) / (AHB divider = 2) = 66.5 MHz
> + * System clock (HCLK) = 133 MHz
> + */
> + write32 CSCR, (0x33F08107 | CSCR_MPLL_RESTART | CSCR_SPLL_RESTART)
> +
> + /* add some delay here */
> + mov r1, #0x1000
> +1: subs r1, r1, #0x1
> + bne 1b
> +
> + /* clock gating enable */
> + write32 0x10027818, 0x00050f08
> +
>
ditto
> + /* peripheral clock divider */
> + write32 PCDR0, 0x120470C3 /* FIXME
> */
> + write32 PCDR1, 0x03030303 /* PERDIV1=08 @133 MHz
> */
> + /* PERDIV1=04 @266 MHz
> */
> +
> + /* Configure PCCR0 and PCCR1*/
> + write32 PCCR0, 0xFFFFFFFF
> + write32 PCCR1, 0xFFFFFFFC
> +
> + /* skip sdram initialization if we run from ram */
> + cmp pc, #0xa0000000
> + bls 1f
> + cmp pc, #0xc0000000
> + bhi 1f
>
Please use the definitions of ddr area.
> +
> + mov pc,r10
> +1:
> + sdram_init
> +
> + mov pc,r10
> +
> diff --git a/board/freescale/mx27ads/mx27ads.c
> b/board/freescale/mx27ads/mx27ads.c
> new file mode 100644
> index 0000000..4def923
> --- /dev/null
> +++ b/board/freescale/mx27ads/mx27ads.c
> @@ -0,0 +1,93 @@
> +/*
> + * Copyright (C) 2007 Sascha Hauer, Pengutronix
> + * Copyright (C) 2008,2009 Eric Jarrige <jorasse at users.sourceforge.net>
> + * Copyright (C) 2009 Ilya Yanok <yanok at emcraft.com>
> + * Copyright (C) 2009 Alan Carvalho de Assis <alan at maxtrack.com.br>
> + *
> + * 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 <asm/io.h>
> +#include <asm/macro.h>
> +#include <asm/arch/imx-regs.h>
> +
> +# define __REG(x) (*((volatile u32 *)(x)))
> +
> +#define IMX_CS4_BASE 0xD4000000
> +#define CS4U __REG(IMX_WEIM_BASE + 0x40) /* Chip Select 4 Upper Register
> */
> +#define CS4L __REG(IMX_WEIM_BASE + 0x44) /* Chip Select 4 Lower Register
> */
> +#define CS4A __REG(IMX_WEIM_BASE + 0x48) /* Chip Select 4 Addition
> Register */
> +
> +DECLARE_GLOBAL_DATA_PTR;
> +
> +int board_init(void)
> +{
> + struct gpio_regs *regs = (struct gpio_regs *)IMX_GPIO_BASE;
> +
> + gd->bd->bi_arch_number = MACH_TYPE_MX27ADS;
> + gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
>
move bi_boot_params to dram_init.
> +
> +#ifdef CONFIG_MXC_UART
> + mx27_uart_init_pins();
> +#endif
> +#ifdef CONFIG_FEC_MXC
> + mx27_fec_init_pins();
> + imx_gpio_mode((GPIO_PORTC | GPIO_OUT | GPIO_PUEN | GPIO_GPIO |
> 31));
> + writel(readl(®s->port[PORTC].dr) | (1 << 31),
> + ®s->port[PORTC].dr);
> +
> + /* Configure CPLD on CS4 */
> + CS4U = 0x0000DCF6;
> + CS4L = 0x444A4541;
> + CS4A = 0x44443302;
> +
> + /* Select FEC data through data path */
> + writew(0x0020, IMX_CS4_BASE + 0x10);
> +
> + /* Enable CPLD FEC data path */
> + writew(0x0010, IMX_CS4_BASE + 0x14);
> +#endif
> +#ifdef CONFIG_MXC_MMC
> + mx27_sd2_init_pins();
> +#endif
> +
> + return 0;
> +}
> +
> +int dram_init(void)
> +{
> +
> +#if CONFIG_NR_DRAM_BANKS > 0
> + gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
> + gd->bd->bi_dram[0].size = get_ram_size((volatile void
> *)PHYS_SDRAM_1,
> + PHYS_SDRAM_1_SIZE);
> +#endif
> +#if CONFIG_NR_DRAM_BANKS > 1
> + gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
> + gd->bd->bi_dram[1].size = get_ram_size((volatile void
> *)PHYS_SDRAM_2,
> + PHYS_SDRAM_2_SIZE);
> +#endif
> +
> + return 0;
> +}
> +
> +int checkboard(void)
> +{
> + printf("Freescale i.MX27ADS\n");
> + return 0;
> +}
> diff --git a/board/freescale/mx27ads/u-boot.lds
> b/board/freescale/mx27ads/u-boot.lds
> new file mode 100644
> index 0000000..f66f20e
> --- /dev/null
> +++ b/board/freescale/mx27ads/u-boot.lds
> @@ -0,0 +1,56 @@
> +/*
> + * (C) Copyright 2007
> + * Wolfgang Denk, DENX Software Engineering, wd at denx.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
> + */
> +
> +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
> +OUTPUT_ARCH(arm)
> +ENTRY(_start)
> +SECTIONS
> +{
> + . = 0x00000000;
> +
> + . = ALIGN(4);
> + .text :
> + {
> + cpu/arm926ejs/start.o (.text)
> + *(.text)
> + }
> +
> + . = ALIGN(4);
> + .rodata : { *(.rodata) }
> +
> + . = ALIGN(4);
> + .data : { *(.data) }
> +
> + . = ALIGN(4);
> + .got : { *(.got) }
> +
> + __u_boot_cmd_start = .;
> + .u_boot_cmd : { *(.u_boot_cmd) }
> + __u_boot_cmd_end = .;
> +
> + . = ALIGN(4);
> + __bss_start = .;
> + .bss : { *(.bss) }
> + _end = .;
> +}
> +
> diff --git a/include/configs/mx27ads.h b/include/configs/mx27ads.h
> new file mode 100644
> index 0000000..3360d76
> --- /dev/null
> +++ b/include/configs/mx27ads.h
> @@ -0,0 +1,202 @@
> +/*
> + * Copyright (C) 2009 Ilya Yanok <yanok at emcraft.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
> + */
> +
> +#ifndef __CONFIG_H
> +#define __CONFIG_H
> +
> +/*===================*/
> +/* SoC Configuration */
> +/*===================*/
> +#define CONFIG_ARM926EJS /* arm926ejs CPU core */
> +#define CONFIG_MX27
> +#define CONFIG_IMX27ADS
> +#define CONFIG_MX27_CLK32 32768 /* OSC32K frequency */
> +#define CONFIG_SYS_HZ 1000
> +
> +#define CONFIG_DISPLAY_CPUINFO
> +
> +#define CONFIG_CMDLINE_TAG 1 /* enable passing of ATAGs
> */
> +#define CONFIG_SETUP_MEMORY_TAGS 1
> +#define CONFIG_INITRD_TAG 1
> +
> +/*=============*/
> +/* Memory Info */
> +/*=============*/
> +/* malloc() len */
> +#define CONFIG_SYS_MALLOC_LEN (0x10000 + 256*1024)
> +/* reserved for initial data */
> +#define CONFIG_SYS_GBL_DATA_SIZE 128
> +/* memtest start address */
> +#define CONFIG_SYS_MEMTEST_START 0xA0000000
> +#define CONFIG_SYS_MEMTEST_END 0xA1000000 /* 16MB RAM test */
> +#define CONFIG_NR_DRAM_BANKS 1 /* we have 1 bank of DRAM
> */
> +#define CONFIG_STACKSIZE (256*1024) /* regular stack */
> +#define PHYS_SDRAM_1 0xA0000000 /* DDR Start */
> +#define PHYS_SDRAM_1_SIZE 0x08000000 /* DDR size 128MB */
> +
> +/*====================*/
> +/* Serial Driver info */
> +/*====================*/
> +#define CONFIG_MXC_UART
> +#define CONFIG_SYS_MX27_UART1
> +#define CONFIG_CONS_INDEX 1 /* use UART0 for console */
> +#define CONFIG_BAUDRATE 115200 /* Default baud
> rate */
> +#define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200
> }
> +
> +/*=====================*/
> +/* Flash & Environment */
> +/*=====================*/
> +
> +#define CONFIG_ENV_IS_IN_FLASH
> +#define CONFIG_FLASH_CFI_DRIVER
> +#define CONFIG_FLASH_CFI_MTD
> +#define CONFIG_SYS_FLASH_CFI
> +
> +/* Use hardware sector protection */
> +#define CONFIG_SYS_FLASH_PROTECTION 1
> +#define CONFIG_SYS_MAX_FLASH_BANKS 1 /* max number of flash
> banks */
> +#define CONFIG_SYS_FLASH_SECT_SZ 0x2000 /* 8KB sect size Intel
> Flash */
> +/* end of flash */
> +#define CONFIG_ENV_OFFSET (PHYS_FLASH_SIZE - 0x20000)
> +/* CS2 Base address */
> +#define PHYS_FLASH_1 0xc0000000
> +/* Flash Base for U-Boot */
> +#define CONFIG_SYS_FLASH_BASE PHYS_FLASH_1
> +/* Flash size 32MB */
> +#define PHYS_FLASH_SIZE 0x2000000
> +#define CONFIG_SYS_MAX_FLASH_SECT (PHYS_FLASH_SIZE / \
> + CONFIG_SYS_FLASH_SECT_SZ)
> +#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_FLASH_BASE
> +#define CONFIG_SYS_MONITOR_LEN 0x40000 /* Reserve 256KiB
> */
> +#define CONFIG_ENV_SECT_SIZE 0x10000 /* Env sector Size
> */
> +#define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
> +/* Address and size of Redundant Environment Sector */
> +#define CONFIG_ENV_OFFSET_REDUND (CONFIG_ENV_OFFSET +
> CONFIG_ENV_SIZE)
> +#define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE
> +
> +/*
> + * Ethernet
> + */
> +#define CONFIG_FEC_MXC
> +#define CONFIG_FEC_MXC_PHYADDR 0x1f
> +#define CONFIG_MII
> +#define CONFIG_NET_MULTI
> +
> +/*#define CONFIG_DRIVER_CS8900 1
> +#define CS8900_BASE 0xD4020300
> +#define CS8900_BUS16 1*/
>
Remove commented code.
> +#define CONFIG_ETHADDR 02:80:ad:20:31:e8
> +
> +/*
> + * NAND
> + */
> +#define CONFIG_NAND_MXC
> +#define CONFIG_MXC_NAND_REGS_BASE 0xd8000000
> +#define CONFIG_SYS_MAX_NAND_DEVICE 1
> +#define CONFIG_SYS_NAND_BASE 0xd8000000
> +#define CONFIG_JFFS2_NAND
> +#define CONFIG_MXC_NAND_HWECC
> +
> +/*
> + * SD/MMC
> + */
> +#define CONFIG_MMC
> +#define CONFIG_GENERIC_MMC
> +#define CONFIG_MXC_MMC
> +#define CONFIG_MXC_MCI_REGS_BASE 0x10014000
> +#define CONFIG_DOS_PARTITION
> +
> +/*
> + * MTD partitions
> + */
> +#define CONFIG_MTD_DEVICE
> +#define CONFIG_CMD_MTDPARTS
> +#define MTDIDS_DEFAULT "nor0=physmap-flash.0"
> +#define MTDPARTS_DEFAULT \
> +
> "mtdparts=physmap-flash.0:256k(U-Boot),3968k(kernel),28416k(user),64k(env1),64k(env2)"
> +
> +/*==============================*/
> +/* U-Boot general configuration */
> +/*==============================*/
> +#define CONFIG_BOOTFILE "uImage" /* Boot file name
> */
> +#define CONFIG_SYS_PROMPT "=> " /* Monitor Command Prompt */
> +#define CONFIG_SYS_CBSIZE 1024 /* Console I/O Buffer Size */
> +/* Print buffer sz */
> +#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
> + sizeof(CONFIG_SYS_PROMPT) + 16)
> +#define CONFIG_SYS_MAXARGS 16 /* max number of command args */
> +/* Boot Argument Buffer Size */
> +#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
> +#define CONFIG_CMDLINE_EDITING
> +#define CONFIG_SYS_LONGHELP
> +
> +/*=================*/
> +/* U-Boot commands */
> +/*=================*/
> +#include <config_cmd_default.h>
> +#define CONFIG_CMD_ASKENV
> +#define CONFIG_CMD_BDI
> +#define CONFIG_CMD_DHCP
> +#define CONFIG_CMD_DIAG
> +#define CONFIG_CMD_FAT
> +#define CONFIG_CMD_JFFS2
> +#define CONFIG_CMD_MII
> +#define CONFIG_CMD_MMC
> +#define CONFIG_CMD_NAND
> +#define CONFIG_CMD_NET
> +#define CONFIG_CMD_NFS
> +#define CONFIG_CMD_PING
> +
> +#define CONFIG_BOOTDELAY 5
> +
> +#define CONFIG_LOADADDR 0xa0800000 /* loadaddr env var
> */
> +#define CONFIG_SYS_LOAD_ADDR CONFIG_LOADADDR
> +
> +#define xstr(s) str(s)
> +#define str(s) #s
> +
> +#define CONFIG_EXTRA_ENV_SETTINGS
> \
> + "netdev=eth0\0" \
> + "nfsargs=setenv bootargs root=/dev/nfs rw " \
> + "nfsroot=${serverip}:${rootpath}\0" \
> + "ramargs=setenv bootargs root=/dev/ram rw\0" \
> + "addip=setenv bootargs ${bootargs} " \
> + "ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}" \
> + ":${hostname}:${netdev}:off panic=1\0" \
> + "addtty=setenv bootargs ${bootargs}" \
> + " console=ttymxc0,${baudrate}\0" \
> + "addmtd=setenv bootargs ${bootargs} ${mtdparts}\0" \
> + "addmisc=setenv bootargs ${bootargs}\0" \
> + "u-boot=imx27/u-boot.bin\0" \
> + "kernel_addr_r=a0800000\0" \
> + "hostname=imx27\0" \
> + "bootfile=imx27/uImage\0" \
> + "rootpath=/opt/eldk-4.2-arm/arm\0" \
> + "net_nfs=tftp ${kernel_addr_r} ${bootfile};" \
> + "run nfsargs addip addtty addmtd addmisc;" \
> + "bootm\0" \
> + "bootcmd=run net_nfs\0" \
> + "load=tftp ${loadaddr} ${u-boot}\0" \
> + "update=protect off " xstr(CONFIG_SYS_MONITOR_BASE) \
> + " +${filesize};era " xstr(CONFIG_SYS_MONITOR_BASE) \
> + " +${filesize};cp.b ${fileaddr} " \
> + xstr(CONFIG_SYS_MONITOR_BASE) " ${filesize}\0" \
> + "upd=run load update\0" \
> +
> +#endif /* __CONFIG_H */
> --
> 1.6.0.4
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