移植at91sam9260从norflash启动

淩亂°似流年 2022-01-28 00:09 370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AT91BootStrap不支持NorFlash,可以到这里下载at91sam的BootStrap：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: 

  1. /* ----------------------------------------------------------------------------
  2. * ATMEL Microcontroller Software Support - ROUSSET -
  3. * ----------------------------------------------------------------------------
  4. * Copyright (c) 2006, Atmel Corporation
  7. * All rights reserved.
  8. *
  9. * Redistribution and use in source and binary forms, with or without
  10. * modification, are permitted provided that the following conditions are met:
  11. *
  12. * - Redistributions of source code must retain the above copyright notice,
  13. * this list of conditions and the disclaimer below.
  14. *
  15. * - Redistributions in binary form must reproduce the above copyright notice,
  16. * this list of conditions and the disclaimer below in the documentation and/or
  17. * other materials provided with the distribution.
  18. *
  19. * Atmel's name may not be used to endorse or promote products derived from
  20. * this software without specific prior written permission.
  21. *
  22. * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
  23. * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  24. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
  25. * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
  26. * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
  28. * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  29. * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  30. * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  31. * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32. * ----------------------------------------------------------------------------
  33. * File Name : at91sam9260ek.h
  34. * Object :
  35. * Creation : NLe Sep 28th 2006
  36. *-----------------------------------------------------------------------------
  37. */
  38. #ifndef _AT91SAM9260EK_H
  39. #define _AT91SAM9260EK_H
  42. /* ******************************************************************* */
  43. /* PMC Settings */
  44. /* */
  45. /* The main oscillator is enabled as soon as possible in the c_startup */
  46. /* and MCK is switched on the main oscillator. */
  47. /* PLL initialization is done later in the hw_init() function */
  48. /* ******************************************************************* */
  49. #define MASTER_CLOCK (198656000/2)
  50. #define PLL_LOCK_TIMEOUT 1000000
  53. #define PLLA_SETTINGS 0x2060BF09
  54. #define PLLB_SETTINGS 0x10483F0E
  57. /* Switch MCK on PLLA output PCK = PLLA = 2 * MCK */
  58. #define MCKR_SETTINGS (AT91C_PMC_CSS_PLLA_CLK | AT91C_PMC_PRES_CLK | AT91C_PMC_MDIV_2)
  59. #define MCKR_CSS_SETTINGS (AT91C_PMC_CSS_PLLA_CLK | MCKR_SETTINGS)
  62. /* ******************************************************************* */
  63. /* BootStrap Settings */
  64. /* */
  65. /* ******************************************************************* */
  66. #define IMG_ADDRESS 0x10004000 /* Image Address in NorFlash */
  67. #define IMG_SIZE 0x30000 /* Image Size in NorFlash */
  70. #define MACH_TYPE 0x44B /* AT91SAM9260-EK */
  71. #define JUMP_ADDR 0x23F00000 /* Final Jump Address */
  74. /* ******************************************************************* */
  75. /* Application Settings */
  76. /* ******************************************************************* */
  77. #define CFG_DEBUG
  80. #define CFG_SDRAM
  81. #define CFG_HW_INIT
  84. #undef CFG_DATAFLASH
  85. #undef CFG_NANDFLASH
  88. #ifndef CFG_NORFLASH
  89. #define CFG_NORFLASH
  90. #endif
  93. #endif /* _AT91SAM9260EK_H */
  96. 添加Makefile文件
  99. # TODO: set this appropriately for your local toolchain
  100. ifndef ERASE_FCT
  101. ERASE_FCT=rm -f
  102. endif
  103. ifndef CROSS_COMPILE
  104. CROSS_COMPILE=arm-elf-
  105. endif
  108. TOOLCHAIN=gcc
  111. BOOTSTRAP_PATH=../../..
  114. # NorFlashBoot Configuration for AT91SAM9260EK
  117. # Target name (case sensitive!!!)
  118. TARGET=AT91SAM9260
  119. # Board name (case sensitive!!!)
  120. BOARD=at91sam9260ek
  121. # Link Address and Top_of_Memory
  122. LINK_ADDR=0x200000
  123. TOP_OF_MEMORY=0x301000
  124. # Name of current directory
  125. PROJECT=norflash
  128. ifndef BOOT_NAME
  129. BOOT_NAME=$(PROJECT)_$(BOARD)
  130. endif
  133. INCL=./$(BOOTSTRAP_PATH)/board/$(BOARD)/$(PROJECT)
  136. ifeq ($(TOOLCHAIN), gcc)
  139. AS=$(CROSS_COMPILE)gcc
  140. CC=$(CROSS_COMPILE)gcc
  141. LD=$(CROSS_COMPILE)gcc
  142. NM= $(CROSS_COMPILE)nm
  143. SIZE=$(CROSS_COMPILE)size
  144. OBJCOPY=$(CROSS_COMPILE)objcopy
  145. OBJDUMP=$(CROSS_COMPILE)objdump
  146. CCFLAGS=-g -mcpu=arm926ej-s -Os -Wall -D$(TARGET) -I$(INCL)
  147. ASFLAGS=-g -mcpu=arm926ej-s -c -Os -Wall -D$(TARGET) -I$(INCL) -DTOP_OF_MEM=$(TOP_OF_MEMORY)
  150. # Linker flags.
  151. # -Wl,...: tell GCC to pass this to linker.
  152. # -Map: create map file
  153. # --cref: add cross reference to map file
  154. LDFLAGS+=-nostartfiles -nostdlib -Wl,-Map=$(BOOT_NAME).map,--cref
  155. LDFLAGS+=-T $(BOOTSTRAP_PATH)/elf32-littlearm.lds -Ttext $(LINK_ADDR)
  156. OBJS=crt0_gnu.o
  159. endif
  162. OBJS+=/
  163. $(BOARD).o /
  164. main.o /
  165. gpio.o /
  166. pmc.o /
  167. debug.o /
  168. sdramc.o /
  169. norflash.o /
  170. _udivsi3.o /
  171. _umodsi3.o /
  172. div0.o /
  173. udiv.o /
  174. string.o
  177. rebuild: clean all
  180. all: $(BOOT_NAME)
  183. ifeq ($(TOOLCHAIN), gcc)
  184. $(BOOT_NAME): $(OBJS)
  185. $(LD) $(LDFLAGS) -n -o $(BOOT_NAME).elf $(OBJS)
  186. $(OBJCOPY) --strip-debug --strip-unneeded $(BOOT_NAME).elf -O binary $(BOOT_NAME).bin
  187. endif
  190. $(BOARD).o: $(BOOTSTRAP_PATH)/board/$(BOARD)/$(BOARD).c
  191. $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/board/$(BOARD)/$(BOARD).c -o $(BOARD).o
  194. main.o: $(BOOTSTRAP_PATH)/main.c
  195. $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/main.c -o main.o
  198. gpio.o: $(BOOTSTRAP_PATH)/driver/gpio.c
  199. $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/driver/gpio.c -o gpio.o
  202. pmc.o: $(BOOTSTRAP_PATH)/driver/pmc.c
  203. $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/driver/pmc.c -o pmc.o
  206. debug.o: $(BOOTSTRAP_PATH)/driver/debug.c
  207. $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/driver/debug.c -o debug.o
  210. sdramc.o: $(BOOTSTRAP_PATH)/driver/sdramc.c
  211. $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/driver/sdramc.c -o sdramc.o
  214. norflash.o: $(BOOTSTRAP_PATH)/driver/norflash.c
  215. $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/driver/norflash.c -o norflash.o
  218. crt0_gnu.o: $(BOOTSTRAP_PATH)/crt0_gnu.S
  219. $(AS) $(ASFLAGS) $(BOOTSTRAP_PATH)/crt0_gnu.S -o crt0_gnu.o
  222. div0.o: $(BOOTSTRAP_PATH)/lib/div0.c
  223. $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/lib/div0.c -o div0.o
  226. string.o: $(BOOTSTRAP_PATH)/lib/string.c
  227. $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/lib/string.c -o string.o
  230. udiv.o: $(BOOTSTRAP_PATH)/lib/udiv.c
  231. $(CC) -c $(CCFLAGS) $(BOOTSTRAP_PATH)/lib/udiv.c -o udiv.o
  234. _udivsi3.o: $(BOOTSTRAP_PATH)/lib/_udivsi3.S
  235. $(AS) $(ASFLAGS) $(BOOTSTRAP_PATH)/lib/_udivsi3.S -o _udivsi3.o
  238. _umodsi3.o: $(BOOTSTRAP_PATH)/lib/_umodsi3.S
  239. $(AS) $(ASFLAGS) $(BOOTSTRAP_PATH)/lib/_umodsi3.S -o _umodsi3.o
  242. clean:
  243. $(ERASE_FCT) *.o *.bin *.elf *.map

修改 Bootstrap-v1.15/board/at91sam9260ek/at91sam9260ek.c 文件, 添加: 

  1. #ifdef CFG_NORFLASH
  2. #include "../../include/norflash.h"
  3. #endif
  6. #ifdef CFG_NORFLASH
  7. void norflash_hw_init(void)
  8. {
  9. /* Configure CS0 */
  10. writel(AT91C_FLASH_NWE_SETUP | /
  11. AT91C_FLASH_NCS_WR_SETUP | /
  12. AT91C_FLASH_NRD_SETUP | /
  13. AT91C_FLASH_NCS_RD_SETUP, AT91C_BASE_SMC + SMC_SETUP0);
  14. writel(AT91C_FLASH_NWE_PULSE | /
  15. AT91C_FLASH_NCS_WR_PULSE | /
  16. AT91C_FLASH_NRD_PULSE | /
  17. AT91C_FLASH_NCS_RD_PULSE, AT91C_BASE_SMC + SMC_PULSE0);
  18. writel(AT91C_FLASH_NWE_CYCLE | /
  19. AT91C_FLASH_NRD_CYCLE, AT91C_BASE_SMC + SMC_CYCLE0);
  20. writel(AT91C_SMC_READMODE | /
  21. AT91C_SMC_WRITEMODE | /
  22. AT91C_SMC_NWAITM_NWAIT_DISABLE | /
  23. AT91C_SMC_BAT_BYTE_WRITE | /
  24. AT91C_SMC_DBW_WIDTH_SIXTEEN_BITS | /
  25. (AT91C_SMC_TDF & (1 << 16)), AT91C_BASE_SMC + SMC_CTRL0);
  26. }
  27. #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

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：

  1. /* ******************************************************************* */
  2. /* BootStrap Settings */
  3. /* */
  4. /* ******************************************************************* */
  5. #define IMG_ADDRESS 0x10004000 /* Image Address in NorFlash */
  6. #define IMG_SIZE 0x30000 /* Image Size in NorFlash */

2、配置debug信息显示与否

  1. /* ******************************************************************* */
  2. /* Application Settings */
  3. /* ******************************************************************* */
  4. #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，请参考嵌入式系列文章。

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