移植at91sam9260从norflash启动

淩亂°似流年 2022-01-28 00:09 294阅读 0赞

先贴一下u-boo1的下载地址：ftp://ftp.denx.de/pub/u-boot/

at91的补丁地址：ftp://www.at91.com/pub/uboot/

ATMEL官方的AT91**BootStrap**不支持NorFlash,可以到这里下载at91sam的BootStrap：[ftp://www.at91.com/][ftp_www.at91.com]

如果需要支持NorFlash就要自己动手了  
  
在 Bootstrap-v1.15/board/at91sam9260ek 目录添加 norflash文件夹,  
  
在该目录下面添加 at91sam9260ek.h 文件， 文件内容:

/* ----------------------------------------------------------------------------
    * ATMEL Microcontroller Software Support - ROUSSET -
    * ----------------------------------------------------------------------------
    * Copyright (c) 2006, Atmel Corporation
    
    
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without
    * modification, are permitted provided that the following conditions are met:
    *
    * - Redistributions of source code must retain the above copyright notice,
    * this list of conditions and the disclaimer below.
    *
    * - Redistributions in binary form must reproduce the above copyright notice,
    * this list of conditions and the disclaimer below in the documentation and/or
    * other materials provided with the distribution.
    *
    * Atmel's name may not be used to endorse or promote products derived from
    * this software without specific prior written permission.
    *
    * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
    * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
    * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
    * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
    * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
    * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
    * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
    * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    * ----------------------------------------------------------------------------
    * File Name : at91sam9260ek.h
    * Object :
    * Creation : NLe Sep 28th 2006
    *-----------------------------------------------------------------------------
    */
    #ifndef _AT91SAM9260EK_H
    #define _AT91SAM9260EK_H
    
    
    /* ******************************************************************* */
    /* PMC Settings */
    /* */
    /* The main oscillator is enabled as soon as possible in the c_startup */
    /* and MCK is switched on the main oscillator. */
    /* PLL initialization is done later in the hw_init() function */
    /* ******************************************************************* */
    #define MASTER_CLOCK (198656000/2)
    #define PLL_LOCK_TIMEOUT 1000000
    
    
    #define PLLA_SETTINGS 0x2060BF09
    #define PLLB_SETTINGS 0x10483F0E
    
    
    /* Switch MCK on PLLA output PCK = PLLA = 2 * MCK */
    #define MCKR_SETTINGS (AT91C_PMC_CSS_PLLA_CLK | AT91C_PMC_PRES_CLK | AT91C_PMC_MDIV_2)
    #define MCKR_CSS_SETTINGS (AT91C_PMC_CSS_PLLA_CLK | MCKR_SETTINGS)
    
    
    /* ******************************************************************* */
    /* BootStrap Settings */
    /* */
    /* ******************************************************************* */
    #define IMG_ADDRESS 0x10004000 /* Image Address in NorFlash */
    #define IMG_SIZE 0x30000 /* Image Size in NorFlash */
    
    
    #define MACH_TYPE 0x44B /* AT91SAM9260-EK */
    #define JUMP_ADDR 0x23F00000 /* Final Jump Address */
    
    
    /* ******************************************************************* */
    /* Application Settings */
    /* ******************************************************************* */
    #define CFG_DEBUG
    
    
    #define CFG_SDRAM
    #define CFG_HW_INIT
    
    
    #undef CFG_DATAFLASH
    #undef CFG_NANDFLASH
    
    
    #ifndef CFG_NORFLASH
    #define CFG_NORFLASH
    #endif
    
    
    #endif /* _AT91SAM9260EK_H */
    
    
    添加Makefile文件
    
    
    # TODO: set this appropriately for your local toolchain
    ifndef ERASE_FCT
    ERASE_FCT=rm -f
    endif
    ifndef CROSS_COMPILE
    CROSS_COMPILE=arm-elf-
    endif
    
    
    TOOLCHAIN=gcc
    
    
    BOOTSTRAP_PATH=../../..
    
    
    # NorFlashBoot Configuration for AT91SAM9260EK
    
    
    # Target name (case sensitive!!!)
    TARGET=AT91SAM9260
    # Board name (case sensitive!!!)
    BOARD=at91sam9260ek
    # Link Address and Top_of_Memory
    LINK_ADDR=0x200000
    TOP_OF_MEMORY=0x301000
    # Name of current directory
    PROJECT=norflash
    
    
    ifndef BOOT_NAME
    BOOT_NAME=$(PROJECT)_$(BOARD)
    endif
    
    
    INCL=./$(BOOTSTRAP_PATH)/board/$(BOARD)/$(PROJECT)
    
    
    ifeq ($(TOOLCHAIN), gcc)
    
    
    AS=$(CROSS_COMPILE)gcc
    CC=$(CROSS_COMPILE)gcc
    LD=$(CROSS_COMPILE)gcc
    NM= $(CROSS_COMPILE)nm
    SIZE=$(CROSS_COMPILE)size
    OBJCOPY=$(CROSS_COMPILE)objcopy
    OBJDUMP=$(CROSS_COMPILE)objdump
    CCFLAGS=-g -mcpu=arm926ej-s -Os -Wall -D$(TARGET) -I$(INCL)
    ASFLAGS=-g -mcpu=arm926ej-s -c -Os -Wall -D$(TARGET) -I$(INCL) -DTOP_OF_MEM=$(TOP_OF_MEMORY)
    
    
    # Linker flags.
    # -Wl,...: tell GCC to pass this to linker.
    # -Map: create map file
    # --cref: add cross reference to map file
    LDFLAGS+=-nostartfiles -nostdlib -Wl,-Map=$(BOOT_NAME).map,--cref
    LDFLAGS+=-T $(BOOTSTRAP_PATH)/elf32-littlearm.lds -Ttext $(LINK_ADDR)
    OBJS=crt0_gnu.o
    
    
    endif
    
    
    OBJS+=/
    $(BOARD).o /
    main.o /
    gpio.o /
    pmc.o /
    debug.o /
    sdramc.o /
    norflash.o /
    _udivsi3.o /
    _umodsi3.o /
    div0.o /
    udiv.o /
    string.o
    
    
    rebuild: clean all
    
    
    all: $(BOOT_NAME)
    
    
    ifeq ($(TOOLCHAIN), gcc)
    $(BOOT_NAME): $(OBJS)
    $(LD) $(LDFLAGS) -n -o $(BOOT_NAME).elf $(OBJS)
    $(OBJCOPY) --strip-debug --strip-unneeded $(BOOT_NAME).elf -O binary $(BOOT_NAME).bin
    endif
    
    
    $(BOARD).o: $(BOOTSTRAP_PATH)/board/$(BOARD)/$(BOARD).c
    $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/board/$(BOARD)/$(BOARD).c -o $(BOARD).o
    
    
    main.o: $(BOOTSTRAP_PATH)/main.c
    $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/main.c -o main.o
    
    
    gpio.o: $(BOOTSTRAP_PATH)/driver/gpio.c
    $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/driver/gpio.c -o gpio.o
    
    
    pmc.o: $(BOOTSTRAP_PATH)/driver/pmc.c
    $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/driver/pmc.c -o pmc.o
    
    
    debug.o: $(BOOTSTRAP_PATH)/driver/debug.c
    $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/driver/debug.c -o debug.o
    
    
    sdramc.o: $(BOOTSTRAP_PATH)/driver/sdramc.c
    $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/driver/sdramc.c -o sdramc.o
    
    
    norflash.o: $(BOOTSTRAP_PATH)/driver/norflash.c
    $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/driver/norflash.c -o norflash.o
    
    
    crt0_gnu.o: $(BOOTSTRAP_PATH)/crt0_gnu.S
    $(AS) $(ASFLAGS) $(BOOTSTRAP_PATH)/crt0_gnu.S -o crt0_gnu.o
    
    
    div0.o: $(BOOTSTRAP_PATH)/lib/div0.c
    $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/lib/div0.c -o div0.o
    
    
    string.o: $(BOOTSTRAP_PATH)/lib/string.c
    $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/lib/string.c -o string.o
    
    
    udiv.o: $(BOOTSTRAP_PATH)/lib/udiv.c
    $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/lib/udiv.c -o udiv.o
    
    
    _udivsi3.o: $(BOOTSTRAP_PATH)/lib/_udivsi3.S
    $(AS) $(ASFLAGS) $(BOOTSTRAP_PATH)/lib/_udivsi3.S -o _udivsi3.o
    
    
    _umodsi3.o: $(BOOTSTRAP_PATH)/lib/_umodsi3.S
    $(AS) $(ASFLAGS) $(BOOTSTRAP_PATH)/lib/_umodsi3.S -o _umodsi3.o
    
    
    clean:
    $(ERASE_FCT) *.o *.bin *.elf *.map

修改 **[Bootstrap][]**\-v1.15/board/at91sam9260ek/at91sam9260ek.c 文件, 添加:

#ifdef CFG_NORFLASH
    #include "../../include/norflash.h"
    #endif
    
    
    #ifdef CFG_NORFLASH
    void norflash_hw_init(void)
    {
    /* Configure CS0 */
    writel(AT91C_FLASH_NWE_SETUP | /
    AT91C_FLASH_NCS_WR_SETUP | /
    AT91C_FLASH_NRD_SETUP | /
    AT91C_FLASH_NCS_RD_SETUP, AT91C_BASE_SMC + SMC_SETUP0);
    writel(AT91C_FLASH_NWE_PULSE | /
    AT91C_FLASH_NCS_WR_PULSE | /
    AT91C_FLASH_NRD_PULSE | /
    AT91C_FLASH_NCS_RD_PULSE, AT91C_BASE_SMC + SMC_PULSE0);
    writel(AT91C_FLASH_NWE_CYCLE | /
    AT91C_FLASH_NRD_CYCLE, AT91C_BASE_SMC + SMC_CYCLE0);
    writel(AT91C_SMC_READMODE | /
    AT91C_SMC_WRITEMODE | /
    AT91C_SMC_NWAITM_NWAIT_DISABLE | /
    AT91C_SMC_BAT_BYTE_WRITE | /
    AT91C_SMC_DBW_WIDTH_SIXTEEN_BITS | /
    (AT91C_SMC_TDF & (1 << 16)), AT91C_BASE_SMC + SMC_CTRL0);
    }
    #endif

在 Bootstrap-v1.15/board/at91sam9260ek/norflash 目录执行 make命令，就会在norflash下生成

我们需要的 norflash\_at91sam9260ek.bin 文件。

或者可以到这里直接下载别人做好的来用：[http://bbs.ednchina.com/BLOG\_ARTICLE\_227846.HTM][http_bbs.ednchina.com_BLOG_ARTICLE_227846.HTM]

配置参数

1、修改u-boot的加载地址

修改at91sam9260ek.h文件中的两个宏：

/* ******************************************************************* */
    /* BootStrap Settings */
    /* */
    /* ******************************************************************* */
    #define IMG_ADDRESS 0x10004000 /* Image Address in NorFlash */
    #define IMG_SIZE 0x30000 /* Image Size in NorFlash */

2、配置debug信息显示与否

/* ******************************************************************* */
    /* Application Settings */
    /* ******************************************************************* */
    #define CFG_DEBUG

另外注意：

在makefile文件中，CROSS\_COMPILE=arm-elf-（表示选择winarm编译器），修改成自己的交叉编译工具。

关于bin文件的烧录可以参考:http://www.doc88.com/p-985621303040.html

其他更多内容，请参考**[嵌入式][Bootstrap]**系列文章。

[ftp_www.at91.com]: ftp://www.at91.com/
[Bootstrap]: http://blog.csdn.net/shanzhizi/article/category/1277259
[http_bbs.ednchina.com_BLOG_ARTICLE_227846.HTM]: http://bbs.ednchina.com/BLOG_ARTICLE_227846.HTM