uboot带DMA网卡移植到扬创F移植详细步骤.docx

1、uboot带DMA网卡移植到扬创F移植详细步骤扬创utu2440板子注明:本篇文章，绝大部分都是来源与tekkaman的移植U，原文链接/34474/showart.php?id=487416，只是因为，结合自己的调试经历，写下此篇，希望新手不会像我这样曲折。一、在U-Boot中建立自己的开发板类型，并测试编译。我为开发板取名叫: utu2440 1 进入U-Boot目录，修改Makefilerootlocalhost u-boot- vim Makefile#为utu2440建立编译项smdk2410_config : unconfig $(MKCONFIG) $(:_config=) ar

2、m arm920t smdk2410 NULL s3c24x0 utu2440_config : unconfig $(MKCONFIG) $(:_config=) arm arm920t utu2440 NULL s3c24x0各项的意思如下:arm: CPU的架构(ARCH)arm920t: CPU的类型(CPU)，其对应于cpu/arm920t子目录。utu2440: 开发板的型号(BOARD)，对应于board/utu2440/目录,我将smdk2410覆盖了NULL: 开发者/或经销商(vender)。s3c24x0: 片上系统(SOC)。设置环境变量rootlocalhost u-

3、boot- vim /root/.bash_profile在PATH一行后添加/usr/local/arm/2 在/board子目录中建立自己的开发板utu2440目录rootlocalhost u-boot- cd boardrootlocalhost board# cp -raf smdk2410/ utu2440rootlocalhost board# cd utu2440rootlocalhost utu2440# mv smdk2410.c utu2440.c还要记得修改自己的开发板tekkaman2440目录下的Makefile文件，不然编译时会出错：rootlocalhost u

4、tu2440# vim MakefileCOBJS := utu2440.o flash.o3 在include/configs/中建立配置头文件rootlocalhost u-boot- cp include/configs/smdk2410.h include/configs/utu2440.h4 测试编译能否成功 1）配置rootlocalhost u-boot- make tekkaman2440_configConfiguring for utu2440 board.注： (1) 如果出现： rootlocalhost u-boot- make utu2440_config Make

5、file:2497: * 遗漏分隔符 (您的意思是用 TAB 代替 8 个空格？)。 停止。 请在Uboot的根目录下的Makefile的 $(MKCONFIG) $(:_config=) arm arm920t utu2440 NULL s3c24x0) 前加上“Tab”键2）测试编译rootlocalhost u-boot-0、修改makefile文件_LIBS := $(subst $(obj),$(LIBS) $(subst $(obj),$(LIBBOARD) 改为：_LIBS := $(subst $(obj),$(LIBBOARD) $(subst $(obj),$(LIBS)

6、二、进行移植，修改uboot代码1、修改/cpu/arm920t/start.S#include #include #if defined(CONFIG_AT91RM9200DK)#include /*这是针对AT91RM9200DK开发板的。#endif./* the actual start code*/start_code: /* * set the cpu to SVC32 mode */ mrs r0,cpsr bic r0,r0,#0x1f orr r0,r0,#0xd3 msr cpsr,r0#if defined(CONFIG_AT91RM9200DK) bl coloured

7、_LED_init bl red_LED_on#endif(0)修改寄存器地址定义 #if defined(CONFIG_S3C2400) | defined(CONFIG_S3C2410)| defined(CONFIG_S3C2440) /* turn off the watchdog */#if defined(CONFIG_S3C2400)#define pWTCON 0x#define INTMSK 0x /* Interupt-Controller base addresses */#define CLKDIVN 0x /* clock divisor register */#el

8、se#define pWTCON 0x#define INTMSK 0x4A000008 /* Interupt-Controller base addresses */#define INTSUBMSK 0x4A00001C#define CLKDIVN 0x4C000014 /* clock divisor register */#define CLK_CTL_BASE 0x4C000000 #define MPLLCON 4 /*MPLLCON的偏移地址*/#endif.(1)修改中断禁止部分 #if defined(CONFIG_S3C2410) ldr r1, =0x7ff /*根据

9、2410芯片手册，INTSUBMSK有11位可用， vivi也是0x7ff，UBoot一直没改过来。*/ ldr r0, =INTSUBMSK str r1, r0#endif#if defined(CONFIG_S3C2440) ldr r1, =0x7fff /*根据2440芯片手册，INTSUBMSK有15位可用*/ ldr r0, =INTSUBMSK str r1, r0#endif(2)修改时钟设置（2440的主频为405MHz。） # if defined(CONFIG_S3C2440) /* FCLK:HCLK:PCLK = 1:4:8 */ ldr r0, =CLKDIVN

10、mov r1, #5 str r1, r0 mrc p15, 0, r1, c1, c0, 0 /*read ctrl register */ orr r1, r1, #0xc0000000 /*Asynchronous */ mcr p15, 0, r1, c1, c0, 0 /*write ctrl register*/ /*now, CPU clock is 405.00 Mhz 这边直接copy了vivi的部分代码*/mov r1, #CLK_CTL_BASE ldr r2, mpll_value clock default ldr r2, =0x7f021 mpll_value_US

11、ER str r2, r1, #MPLLCON #else ldr r0, =CLKDIVN mov r1, #3 str r1, r0 mrc p15, 0, r1, c1, c0, 0 /*read ctrl register*/ orr r1, r1, #0xc0000000 /*Asynchronous */ mcr p15, 0, r1, c1, c0, 0 /*write ctrl register*/ /*now, CPU clock is 202.8 Mhz */ mov r1, #CLK_CTL_BASE mov r2, #MDIV_200 /* mpll_200mhz */

12、 add r2, r2, #PSDIV_200 /* mpll_200mhz */ str r2, r1, #0x04 # endif#endif /* CONFIG_S3C2400 | CONFIG_S3C2410| CONFIG_S3C2440 */ /* * we do sys-critical inits only at reboot, * not when booting from ram! */ #ifndef CONFIG_SKIP_LOWLEVEL_INIT bl cpu_init_crit #endif mov r1, #GPIO_CTL_BASE add r1, r1, #

13、oGPIO_F ldr r2,=0x55aa str r2, r1, #oGPIO_CON mov r2, #0xff str r2, r1, #oGPIO_UP mov r2, #0x0 str r2, r1, #oGPIO_DAT /*时钟以及内存配置配置好后灯全亮*/(3)将从Flash启动改成从NAND Flash启动。注释掉以下UBoot的重定向语句#ifdef CONFIG_AT91RM9200#ifndef CONFIG_SKIP_RELOCATE_UBOOTrelocate: /* relocate U-Boot to RAM */ adr r0, _start /* r0 #

14、endif然后copy vivi中从nand启动的代码 #ifdef CONFIG_S3C2440_NAND_BOOT reset NAND mov r1, #NAND_CTL_BASE ldr r2, =( (7在“ldr pc, _start_armboot”之前加入： mov r1, #GPIO_CTL_BASE add r1, r1, #oGPIO_F mov r2, #0xc0 str r2, r1, #oGPIO_DAT在 “_start_armboot: .word start_armboot” 后加入： .align 2DW_STACK_START: .word STACK_B

15、ASE+STACK_SIZE-4 2在board/utu2440加入NAND Flash读函数文件，拷贝vivi中的nand_read.c文件到board/utu2440/即可不需要作任何改动：#include #define _REGb(x) (*(volatile unsigned char *)(x)#define _REGi(x) (*(volatile unsigned int *)(x)#define NF_BASE 0x4e000000# if defined(CONFIG_S3C2440)#define NFCONF _REGi(NF_BASE + 0x0)#define NF

16、CONT _REGi(NF_BASE + 0x4)#define NFCMD _REGb(NF_BASE + 0x8)#define NFADDR _REGb(NF_BASE + 0xC)#define NFDATA _REGb(NF_BASE + 0x10)#define NFSTAT _REGb(NF_BASE + 0x20)/#define GPDAT _REGi(GPIO_CTL_BASE+oGPIO_F+oGPIO_DAT)#define NAND_CHIP_ENABLE (NFCONT &= (1 9) & 0xff; NFADDR = (i 17) & 0xff; NFADDR

17、= (i 25) & 0xff; NAND_DETECT_RB; for(j=0; j 9) & 0xff; NFADDR = (i 17) & 0xff; NFADDR = (i 25) & 0xff; wait_idle(); for(j=0; j 3 修改board/utu2440/Makefile文件.OBJS := utu2440.o nand_read.o flash.o.4 修改include/configs/utu2440.h文件，添加如下内容：. ./* Nandflash Boot*/#define STACK_BASE 0x33f00000#define STACK_SI

18、ZE 0x8000/#define UBOOT_RAM_BASE 0x33f80000/* NAND Flash Controller */#define NAND_CTL_BASE 0x4E000000#define bINT_CTL(Nb) _REG(INT_CTL_BASE + (Nb)/* Offset */#define oNFCONF 0x00# if defined(CONFIG_S3C2440)#define CONFIG_S3C2440_NAND_BOOT 1/* Offset */#define oNFCONT 0x04#define oNFCMD 0x08#define

19、oNFADDR 0x0c#define oNFDATA 0x10#define oNFSTAT 0x20#define oNFECC 0x2c#define rNFCONF (*(volatile unsigned int *)0x4e000000)#define rNFCONT (*(volatile unsigned int *)0x4e000004)#define rNFCMD (*(volatile unsigned char *)0x4e000008)#define rNFADDR (*(volatile unsigned char *)0x4e00000c)#define rNFD

20、ATA (*(volatile unsigned char *)0x4e000010)#define rNFSTAT (*(volatile unsigned int *)0x4e000020)#define rNFECC (*(volatile unsigned int *)0x4e00002c)/* GPIO */#define GPIO_CTL_BASE 0x#define oGPIO_F0x50#define oGPIO_CON0x0 /* R/W, Configures the pins of the port */#define oGPIO_DAT0x4 /* R/W, Data

21、register for port */#define oGPIO_UP0x8 /* R/W, Pull-up disable register */#endif#endif /* _CONFIG_H */5 修改board/utu2440/lowlevel_init.S文件 依照开发板的内存区的配置情况, 修改board/utu2440/lowlevel_init.S文件，我利用友善之臂提供的vivi源码里的信息做了如下更改: .#define B1_BWSCON (DW16)#define B2_BWSCON (DW16)#define B3_BWSCON (DW16 + WAIT + U

22、BLB)#define B4_BWSCON (DW16)#define B5_BWSCON (DW16)#define B6_BWSCON (DW32)#define B7_BWSCON (DW32).#define B2_Tacs 0x0#define B2_Tcos 0x0#define B2_Tacc 0x7#define B2_Tcoh 0x0#define B2_Tah 0x0#define B2_Tacp 0x0#define B2_PMC 0x0#endif/* REFRESH parameter */#define REFEN 0x1 /* Refresh enable */#

23、define TREFMD 0x0 /* CBR(CAS before RAS)/Auto refresh */#define Trc 0x3 /* 7clk */#define Tchr 0x2 /* 3clk */# if defined(CONFIG_S3C2440)#define Trp 0x2 /* 4clk */#define REFCNT 1265#endif/*/_TEXT_BASE:.word TEXT_BASE.globl lowlevel_initlowlevel_init:/* memory control configuration */* make r0 relat

24、ive the current location so that it */* reads SMRDATA out of FLASH rather than memory ! */ldr r0, =SMRDATAadrl r0, SMRDATA /edited by yaoyi ldr r1, _TEXT_BASE/ sub r0, r0, r1ldr r1, =BWSCON /* Bus Width Status Controller */add r2, r0, #13*40:ldr r3, r0, #4str r3, r1, #4cmp r2, r0bne 0b6 修改/board/utu

25、2440/utu2440.c修改其对GPIO和PLL的配置(请参阅开发板的硬件说明和芯片手册)： .#define FCLK_SPEED 1#if FCLK_SPEED=0 /* Fout = 203MHz, Fin = 12MHz for Audio */#define M_MDIV 0xC3#define M_PDIV 0x4#define M_SDIV 0x1#elif FCLK_SPEED=1 #if defined(CONFIG_S3C2410)/* Fout = 202.8MHz */#define M_MDIV 0xA1#define M_PDIV 0x3#define M_SD

26、IV 0x1#endif#if defined(CONFIG_S3C2440)/* Fout = 405MHz */#define M_MDIV 0x7f #define M_PDIV 0x2#define M_SDIV 0x1#endif#define USB_CLOCK 1#if USB_CLOCK=0#define U_M_MDIV 0xA1#define U_M_PDIV 0x3#define U_M_SDIV 0x1#elif USB_CLOCK=1#if defined(CONFIG_S3C2410)#define U_M_MDIV 0x48#define U_M_PDIV 0x3

27、#endif#if defined(CONFIG_S3C2440)#define U_M_MDIV 0x38#define U_M_PDIV 0x2#endif#define U_M_SDIV 0x2#endif.int board_init (void) . gpio-GPFDAT=0xaf; /板子初始化完后，亮灯 .7 为了实现NAND Flash的读写，再次修改/include/configs/utu2440.h./* High Level Configuration Options* (easy to change)*/#define CONFIG_ARM920T 1 /* This is an ARM920T Core */#define CONFIG_S3C2410 1 /* in a SAMSUNG S3C2410 SoC */ /edited by yaoyi /#define CONFIG_SMDK2410 1 /* on a SAMSUNG SMDK2410 Board*/edited by yaoyi #define CONFIG_utu2440 1#define CONFIG_S3C2440 1 .#include #define CONFIG_CMD_ELF#define CONFIG_C