u-boot在s3c2410开发板上移植过程
2)在Makefile中加入
bks2410_config:unconfig
@./mkconfig $(@:_config=) arm arm920t bks2410 NULL s3c24x0
我把我的板子起名叫bks2410,可以依自己的喜好修改
3)建立board/bks2410目录,拷贝board/smdk2410下的文件到board/bks2410目录,将smdk2410.c更名为bks2410.c
4)cp include/configs/smdk2410.h include/configs/bks2410.h
5)将arm-linux-gcc的目录加入到PATH环境变量中,我的是目录/opt/eldk/usr/bin:/opt/eldk/bin
6)测试编译能否成功:
make bks2410_config
make all ARCH=arm
生成u-boot.bin就OK了
7)依照你自己开发板的内存地址分配情况修改board/bks2410/memsetup.S文件,我的程序:
#include
#include
#define BWSCON0x48000000
/* BWSCON */
#define DW8 (0x0)
#define DW16 (0x1)
#define DW32 (0x2)
#define WAIT (0x1<2)
#define UBLB (0x1<3)
#define B1_BWSCON (DW32)
#define B2_BWSCON (DW16)
#define B3_BWSCON (DW16 + WAIT + UBLB)
#define B4_BWSCON (DW16)
#define B5_BWSCON (DW16)
#define B6_BWSCON (DW32)
#define B7_BWSCON (DW32)
/* BANK0CON */
#if 0
#define B0_Tacs 0x0/* 0clk */
#define B0_Tcos 0x0/* 0clk */
#define B0_Tacc 0x7/* 14clk */
#define B0_Tcoh 0x0/* 0clk */
#define B0_Tah 0x0/* 0clk */
#define B0_Tacp 0x0
#define B0_PMC 0x0/* normal */
#endif
#define B0_Tacs 0x3/* 0clk */
#define B0_Tcos 0x3/* 0clk */
#define B0_Tacc 0x7/* 14clk */
#define B0_Tcoh 0x3/* 0clk */
#define B0_Tah 0x3/* 0clk */
#define B0_Tacp 0x1
#define B0_PMC 0x0/* normal */
/* BANK1CON */
#if 0
#define B1_Tacs 0x0/* 0clk */
#define B1_Tcos 0x0/* 0clk */
#define B1_Tacc 0x7/* 14clk */
#define B1_Tcoh 0x0/* 0clk */
#define B1_Tah 0x0/* 0clk */
#define B1_Tacp 0x0
#define B1_PMC 0x0
#endif
#define B1_Tacs 0x3/* 0clk */
#define B1_Tcos 0x3/* 0clk */
#define B1_Tacc 0x7/* 14clk */
#define B1_Tcoh 0x3/* 0clk */
#define B1_Tah 0x3/* 0clk */
#define B1_Tacp 0x3
#define B1_PMC 0x0
#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
#if 0
#define B3_Tacs 0x0/* 0clk */
#define B3_Tcos 0x3/* 4clk */
#define B3_Tacc 0x7/* 14clk */
#define B3_Tcoh 0x1/* 1clk */
#define B3_Tah 0x0/* 0clk */
#define B3_Tacp 0x3 /* 6clk */
#define B3_PMC 0x0/* normal */
#endif
#define B3_Tacs 0x0/* 0clk */
#define B3_Tcos 0x0/* 4clk */
#define B3_Tacc 0x7/* 14clk */
#define B3_Tcoh 0x0/* 1clk */
#define B3_Tah 0x0/* 0clk */
#define B3_Tacp 0x0 /* 6clk */
#define B3_PMC 0x0/* normal */
#define B4_Tacs 0x0/* 0clk */
#define B4_Tcos 0x0/* 0clk */
#define B4_Tacc 0x7/* 14clk */
#define B4_Tcoh 0x0/* 0clk */
#define B4_Tah 0x0/* 0clk */
#define B4_Tacp 0x0
#define B4_PMC 0x0/* normal */
#define B5_Tacs 0x0/* 0clk */
#define B5_Tcos 0x0/* 0clk */
#define B5_Tacc 0x7/* 14clk */
#define B5_Tcoh 0x0/* 0clk */
#define B5_Tah 0x0/* 0clk */
#define B5_Tacp 0x0
#define B5_PMC 0x0/* normal */
#define B6_MT 0x3/* SDRAM */
#define B6_Trcd 0x1
#define B6_SCAN 0x1/* 9bit */
#define B7_MT 0x3/* SDRAM */
#define B7_Trcd 0x1/* 3clk */
#define B7_SCAN 0x1/* 9bit */
/* REFRESH parameter */
#define REFEN 0x1/* Refresh enable */
#define TREFMD 0x0/* CBR(CAS before RAS)/Auto refresh */
#define Trp 0x0/* 2clk */
#define Trc 0x3/* 7clk */
#define Tchr 0x2/* 3clk */
#define REFCNT 1113/* period=15.6us, HCLK=60Mhz, (2048+1-15.6*60) */
/**************************************/
_TEXT_BASE:
.wordTEXT_BASE
.globl memsetup
memsetup:
/* memory control configuration */
/* make r0 relative the current location so that it */
/* reads SMRDATA out of FLASH rather than memory ! */
adr r0, SMRDATA
/*ldrr1, _TEXT_BASE*/
/*subr0, r0, r1*/
ldrr1, =BWSCON/* Bus Width Status Controller */
add r2, r0, #13*4
0:
ldr r3, [r0], #4
str r3, [r1], #4
cmp r2, r0
bne 0b
/* everything is fine now */
movpc, lr
.ltorg
/* the literal pools origin */
SMRDATA:
.word (0+(B1_BWSCON<4)+(B2_BWSCON<8)+(B3_BWSCON<12)+(B4_BWSCON<16)+(B5_BWSCON<20)+(B6_BWSCON<24)+(B7_BWSCON<28))
.word ((B0_Tacs<13)+(B0_Tcos<11)+(B0_Tacc<8)+(B0_Tcoh<6)+(B0_Tah<4)+(B0_Tacp<2)+(B0_PMC))
.word ((B1_Tacs<13)+(B1_Tcos<11)+(B1_Tacc<8)+(B1_Tcoh<6)+(B1_Tah<4)+(B1_Tacp<2)+(B1_PMC))
.word ((B2_Tacs<13)+(B2_Tcos<11)+(B2_Tacc<8)+(B2_Tcoh<6)+(B2_Tah<4)+(B2_Tacp<2)+(B2_PMC))
.word 0x1f7c/*((B3_Tacs<13)+(B3_Tcos<11)+(B3_Tacc<8)+(B3_Tcoh<6)+(B3_Tah<4)+(B3_Tacp<2)+(B3_PMC))*/
.word ((B4_Tacs<13)+(B4_Tcos<11)+(B4_Tacc<8)+(B4_Tcoh<6)+(B4_Tah<4)+(B4_Tacp<2)+(B4_PMC))
.word ((B5_Tacs<13)+(B5_Tcos<11)+(B5_Tacc<8)+(B5_Tcoh<6)+(B5_Tah<4)+(B5_Tacp<2)+(B5_PMC))
.word ((B6_MT<15)+(B6_Trcd<2)+(B6_SCAN))
.word ((B7_MT<15)+(B7_Trcd<2)+(B7_SCAN))
.word ((REFEN<23)+(TREFMD<22)+(Trp<20)+(Trc<18)+(Tchr<16)+REFCNT)
.word 0x31
.word 0x30
.word 0x30
8)在board/bks2410加入NAND Flash读函数,建立nand_read.c,加入如下内容(copy from vivi):
#include
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