第一次移植uboot(1)
第一次移植uboot,因此把移植步骤记录下来:
/*2010.11.17--2010.11.18*/
/*u-boot-1.1.4中smdk2410到fl2440(s3c2440)移植*/
交叉编绎工具:cross-3.3.2.tar.bz2
默认当前目录为:u-boot-1.1.4
要修改的文件:(1)examples/Makefile (2)Makefile (3)board/fl2440
(4)board/fl2440/fl2440.c (5)board/fl2440/Makefile
(6)include/configs/fl2440.h (7)cpu/arm920t/start.S
(8)include/configs/fl2440.h (8)include/s3c24x0.h
(9)include/s3c2440.h (10)cpu/arm920t/s3c24x0/interrupts.c
(11)cpu/arm920t/s3c24x0/speed.c (12)cpu/arm920t/s3c24x0/serial.c
(13)board/fl2440/fl2440.c (14)cpu/arm920t/s3c24x0/speed.c
(15)include/s3c24x0.h
1. 修改examples/Makefile
126 %.srec:% -> %.srec:%.o
129 %.bin:% -> %.bin:%.o
不修改的话smdk2410编绎不通过
2. Makefile下依照smdk2410_config添加:
fl2440_config :
@./mkconfig $(@:_config=) arm arm920t fl2440 NULL s3c24x0
3. cp -r board/smdk2410 board/fl2440
4. mv board/fl2440/smdk2410.c board/fl2440/fl2440.c
5. 修改board/fl2440/Makefile第28行:
OBJS := smdk2410.o flash.o -> OBJS := fl2440.o flash.o
6. cp include/configs/smdk2410.h include/configs/fl2440.h
到此fl2440可以编译通过
7. 修改cpu/arm920t/start.S
<1>128行(# define CLKDIVN 0x4C000014)后加:
/*129*/#elif defined(CONFIG_S3C2440) # define pWTCON 0x53000000 # define INTMSK 0x4A000008 # define INTSUBMSK 0x4A00001C # define CLKDIVN 0x4C000014 # define NFCONF 0x4E000000 # define NFCONT 0x4E000004 # define NFCMD 0x4E000008 # define NFADDR 0x4E00000C # define NFDATA 0x4E000010 # define NFSTAT 0x4E000020 /*140*/# define NF_SECTOR_SIZE 2048
<2>修改143行为:
#if defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) || defined(CONFIG_S3C2440)
<3>158行(# endif)后加:
/*159*/# if defined(CONFIG_S3C2440) ldr r1, =0x7ff ldr r0, =INTSUBMSK str r1, [r0] /*163*/# endif
<4>169行(str r1, [r0])后加:
/*170*/# if defined(CONFIG_S3C2440) ldr r0, =CLKDIVN mov r1, #5 str r1, [r0] /*174*/#endif
<5>因为从NAND FLASH(k9f2g08u0a)起动uboot,所以197行到201行(即
copy_loop循环)改为:
/*197*/#if defined(CONFIG_S3C2440) mov r7, r0 ldr r3, =NFCONF mov r4, #0x300 str r4, [r3] /*NFCONF =0x300 */ ldr r3, =NFCONT mov r4, #0x11 str r4, [r3] /*NFCONT = (1<<4)|(0<<1)|(1<<0)*/ ldr r3, =NFCMD mov r4, #0xff str r4, [r3] /*reset nand flash:NFCMD = 0xff*/ wait1: ldr r5, =NFSTAT ldr r4, [r5] tst r4, #1 beq wait1 copy_loop: /*read nand flash*/ ldr r3, =NFCMD mov r4, #0x00 str r4, [r3] /*write_cmd(0x00)*/ ldr r5, =NFADDR /*write addr r0*/ and r4, r0, #0xff str r4, [r5] mov r4, r0, lsr#8 and r4, r4, #0x0f str r4, [r5] mov r4, r0, lsr#12 and r4, r4, #0xff str r4, [r5] mov r4, r0, lsr#20 and r4, r4, #0xff str r4, [r5] mov r4, r0, lsr#28 and r4, r4, #0x01 str r4, [r5] mov r4, #0x30 str r4, [r3] /*write_cmd(0x30)*/ ldr r3, =NFSTAT /*wait_idle()*/ wait0: ldr r4, [r3] tst r4, #1 beq wait0 /*start read data*/ ldr r3, =NF_SECTOR_SIZE mov r4, #0 ldr r5, =NFDATA copy1sector: ldr r6, [r5] str r6, [r1] add r0, r0, #4 add r1, r1, #4 add r4, r4, #4 add r7, r7, #4 cmp r4, r3 bcc copy1sector add r0, r0, #2048 cmp r7, r2 ble copy_loop ldr r0, =NFCONT ldr r1, [r0] orr r1, r1, #0x2 str r1, [r0] #elif defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) copy_loop: ldmia r0!, {r3-r10} /* copy from source address [r0] */ stmia r1!, {r3-r10} /* copy to target address [r1] */ cmp r0, r2 /* until source end addreee [r2] */ ble copy_loop /*270*/#endif/*CONFIG_S3C2440*/
start.S修改完
8. 修改include/configs/fl2440.h
<1>37行#define CONFIG_S3C2410 1
改为:#define CONFIG_S3C2440 1
此时编译fl2440,报错board_init函数中S3C24X0_GPIO未定义
9. 修改include/s3c24x0.h
453行(#endif)后加:
#ifdef CONFIG_S3C2440 S3C24X0_REG32 GPACON; S3C24X0_REG32 GPADAT; S3C24X0_REG32 res1[2]; S3C24X0_REG32 GPBCON; S3C24X0_REG32 GPBDAT; S3C24X0_REG32 GPBUP; S3C24X0_REG32 res2; S3C24X0_REG32 GPCCON; S3C24X0_REG32 GPCDAT; S3C24X0_REG32 GPCUP; S3C24X0_REG32 res3; S3C24X0_REG32 GPDCON; S3C24X0_REG32 GPDDA1T; S3C24X0_REG32 GPDUP; S3C24X0_REG32 res4; S3C24X0_REG32 GPECON; S3C24X0_REG32 GPEDAT; S3C24X0_REG32 GPEUP; S3C24X0_REG32 res5; S3C24X0_REG32 GPFCON; S3C24X0_REG32 GPFDAT; S3C24X0_REG32 GPFUP; S3C24X0_REG32 res6; S3C24X0_REG32 GPGCON; S3C24X0_REG32 GPGDAT; S3C24X0_REG32 GPGUP; S3C24X0_REG32 res7; S3C24X0_REG32 GPHCON; S3C24X0_REG32 GPHDAT; S3C24X0_REG32 GPHUP; S3C24X0_REG32 res8; S3C24X0_REG32 MISCCR; S3C24X0_REG32 DCLKCON; S3C24X0_REG32 EXTINT0; S3C24X0_REG32 EXTINT1; S3C24X0_REG32 EXTINT2; S3C24X0_REG32 EINTFLT0; S3C24X0_REG32 EINTFLT1; S3C24X0_REG32 EINTFLT2; S3C24X0_REG32 EINTFLT3; S3C24X0_REG32 EINTMASK; S3C24X0_REG32 EINTPEND; S3C24X0_REG32 GSTATUS0; S3C24X0_REG32 GSTATUS1; S3C24X0_REG32 GSTATUS2; S3C24X0_REG32 GSTATUS3; S3C24X0_REG32 GSTATUS4; S3C24X0_REG32 res9[3]; S3C24X0_REG32 MSLCON; S3C24X0_REG32 GPJCON; S3C24X0_REG32 GPJDAT; S3C24X0_REG32 GPJUP; #endif
此时编译fl2440,报错s3c24x0_rtc.c中SetRTC_Access函数中S3C24X0_RTC未定
义
9. cp include/s3c2410.h include/s3c2440.h
<1>修改include/s3c2440.h
31行:#ifndef __S3C2410_H__
改为:#ifndef __S3C2440_H__
32行:#define __S3C2410_H__
改为:#define __S3C2440_H__
<2>修改rtc/s3c24x0_rtc.c
36行(#include <s3c2410.h>)后加:
#elif defined(CONFIG_S3C2440)
#include <s3c2440.h>
此时编译fl2440,报错:u-boot-1.1.4/cpu/arm920t/interrupts.c:80: undefined reference to `reset_cpu'
10. 修改cpu/arm920t/s3c24x0/interrupts.c
<1>33行(#if defined(CONFIG_S3C2400) || defined (CONFIG_S3C2410) || defined (CONFIG_TRAB))
改为:#if defined(CONFIG_S3C2400) || defined (CONFIG_S3C2410) || defined (CONFIG_TRAB) || defined(CONFIG_S3C2440)
<2>39行(#include <s3c2410.h>)后加:
#elif defined(CONFIG_S3C2440)
#include <s3c2440.h>
此时编译fl2440,报错:u-boot-1.1.4/cpu/arm920t/s3c24x0/interrupts.c:71: undefined reference to
`get_PCLK'
11. 修改cpu/arm920t/s3c24x0/speed.c
<1>33行(#if defined(CONFIG_S3C2400) || defined (CONFIG_S3C2410) || defined (CONFIG_TRAB))
改为:#if defined(CONFIG_S3C2400) || defined (CONFIG_S3C2410) || defined (CONFIG_TRAB) || defined(CONFIG_S3C2440)
<2>38行(#include <s3c2410.h>)后加:
#elif defined(CONFIG_S3C2440)
#include <s3c2440.h>
此时编译fl2440,报错:u-boot-1.1.4/lib_arm/board.c:79: undefined reference to `serial_init'
12. 修改cpu/arm920t/s3c24x0/serial.c
<1>22行(#if defined(CONFIG_S3C2400) || defined (CONFIG_S3C2410) || defined (CONFIG_TRAB))
改为:#if defined(CONFIG_S3C2400) || defined (CONFIG_S3C2410) || defined (CONFIG_TRAB) || defined(CONFIG_S3C2440)
<2>27行(#include <s3c2410.h>)后加:
#elif defined(CONFIG_S3C2440)
#include <s3c2440.h>
此时编译fl2440成功!
此时用H-FLASHER把u-boot.bin烧入NAND FLASH程序可运行,但因时钟问题串
口输出乱码!
13. 修改board/fl2440/fl2440.c
<1>33行(#define FCLK_SPEED 1)改为:
#define FCLK_SPEED 2
<2>42行(#define M_SDIV 0x1)后加:
#elif FCLK_SPEED==2 /* Fout = 400MHz */
#define M_MDIV 0x5c
#define M_PDIV 0x1
#define M_SDIV 0x1
<3>49行(#define USB_CLOCK 1)改为:
#define USB_CLOCK 2
<4>58行(#define U_M_SDIV 0x2)后加:
#elif USB_CLOCK==2
#define U_M_MDIV 0x38
#define U_M_PDIV 0x2
#define U_M_SDIV 0x2
14. 修改cpu/arm920t/s3c24x0/speed.c
<1>72行(return((CONFIG_SYS_CLK_FREQ * m) / (p << s));)改为:
#if defined(CONFIG_S3C2440) return((CONFIG_SYS_CLK_FREQ * m * 2) / (p << s)); #elif defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) return((CONFIG_SYS_CLK_FREQ * m) / (p << s)); #endif
<2>90行(return((clk_power->CLKDIVN & 0x2) ? get_FCLK()/2 : get_FCLK
());)改为:
#if defined(CONFIG_S3C2440) #define S3C2440_CLKDIVN_HDIVN_MASK (3<<1) #define S3C2440_CLKDIVN_HDIVN_1 (0<<1) #define S3C2440_CLKDIVN_HDIVN_2 (1<<1) #define S3C2440_CLKDIVN_HDIVN_4_8 (2<<1) #define S3C2440_CLKDIVN_HDIVN_3_6 (3<<1) #define S3C2440_CAMDIVN_HCLK4_HALF (1<<9) #define S3C2440_CAMDIVN_HCLK3_HALF (1<<8) unsigned long clkdiv; unsigned long camdiv; int hdiv = 1; clkdiv = clk_power->CLKDIVN; camdiv = clk_power->CAMDIVN; switch(clkdiv & S3C2440_CLKDIVN_HDIVN_MASK) { case S3C2440_CLKDIVN_HDIVN_1: hdiv = 1; break; case S3C2440_CLKDIVN_HDIVN_2: hdiv = 2; break; case S3C2440_CLKDIVN_HDIVN_4_8: hdiv = (camdiv & S3C2440_CAMDIVN_HCLK4_HALF) ? 8 : 4; break; case S3C2440_CLKDIVN_HDIVN_3_6: hdiv = (camdiv & S3C2440_CAMDIVN_HCLK3_HALF) ? 6 : 3; break; default: break; } return get_FCLK() / hdiv; #elif defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) return((clk_power->CLKDIVN & 0x2) ? get_FCLK()/2 : get_FCLK()); #endif
15. 修改include/s3c24x0.h中S3C24X0_CLOCK_POWER结构体为:
typedef struct {
S3C24X0_REG32 LOCKTIME;
S3C24X0_REG32 MPLLCON;
S3C24X0_REG32 UPLLCON;
S3C24X0_REG32 CLKCON;
S3C24X0_REG32 CLKSLOW;
S3C24X0_REG32 CLKDIVN;
#ifdef CONFIG_S3C2440
S3C24X0_REG32 CAMDIVN;
#endif
} /*__attribute__((__packed__))*/ S3C24X0_CLOCK_POWER;
此时编译运行uboot,串口即可正常输出并显示!
(修改include/configs/fl2440.h中宏#define CFG_PROMPT "SMDK2410 # "为
#define CFG_PROMPT "FL2440 # ")