移植u-boot1.1.4支持操作nandFlash的nand erase命令

我的nandflash的分区：

0-128k（20000） u-boot1.1.4

128k（20000）-192k（30000） param

192k(30000)-5M(500000) kernel

5M(500000)-10M(a00000) jffs2

10M(a00000)-20M(1400000) cramfs （暂时放的ramdisk）

20M-64M （0x1400000-0x4000000，大小0x2C00000） "YAFFS",

注意：u-boot1.1.4的修改和u-boot1.1.6的有些不一样，u-boot1.1.4只有一个cmd_nand.c ，而u-boot1.1.6是在derivers/nand里面改nand_legecy.c

1.首先打开uboot1.1.4（include/configs/smdk2410.h）的CONFIG_CMD_NAND 支持

末尾加上

#define CONFIG_CMD_MTDPARTS

#define CONFIG_MTD_DEVICE

#define CONFIG_MTD_PARTITIONS

#define MTDIDS_DEFAULT "nand0=K9F1208U0B_nand"

#define MTDPARTS_DEFAULT "mtdparts=K9F1208U0B_nand:128K@0(user)," \

"64K(user)," \

"4F28K(linux)," \

"5M@5M(jffs2)," \

"10M@10M(cramfs),"\

"44M@20M(yaffs2)"

及

/*-----------------------------------------------------------------------

* NAND flash settings

*/

#if (CONFIG_COMMANDS & CFG_CMD_NAND)

#define CFG_MAX_NAND_DEVICE 1 /* Max number of NAND devices */

#define SECTORSIZE 512

#define ADDR_COLUMN 1

#define ADDR_PAGE 2

#define ADDR_COLUMN_PAGE 3

#define NAND_ChipID_UNKNOWN 0x00

#define NAND_MAX_FLOORS 1

#define NAND_MAX_CHIPS 1

#define NAND_WAIT_READY(nand) NF_WaitRB()

#define NAND_DISABLE_CE(nand) NF_SetCE(NFCE_HIGH)

#define NAND_ENABLE_CE(nand) NF_SetCE(NFCE_LOW)

#define WRITE_NAND_COMMAND(d, adr) NF_Cmd(d)

#define WRITE_NAND_COMMANDW(d, adr) NF_CmdW(d)

#define WRITE_NAND_ADDRESS(d, adr) NF_Addr(d)

#define WRITE_NAND(d, adr) NF_Write(d)

#define READ_NAND(adr) NF_Read()

/* the following functions are NOP's because S3C24X0 handles this in hardware */

#define NAND_CTL_CLRALE(nandptr)

#define NAND_CTL_SETALE(nandptr)

#define NAND_CTL_CLRCLE(nandptr)

#define NAND_CTL_SETCLE(nandptr)

/* #undef CONFIG_MTD_NAND_VERIFY_WRITE */

#endif /* CONFIG_COMMANDS & CFG_CMD_NAND */

2在common/cmd_nand.c添加

typedef enum {

NFCE_LOW,

NFCE_HIGH

} NFCE_STATE;

#if(CONFIG_SMDK2410)
#include<s3c2410.h>

static inlinevoid NF_Conf(u16 conf)

{

S3C2410_NAND * const nand =S3C2410_GetBase_NAND();
nand->NFCONF= conf;

}
static inlinevoid NF_Cmd(u8 cmd)

{

S3C2410_NAND * const nand =S3C2410_GetBase_NAND();
nand->NFCMD= cmd;

}
static inlinevoid NF_CmdW(u8 cmd)

{

NF_Cmd(cmd);

udelay(1);

}
static inlinevoid NF_Addr(u8 addr)

{

S3C2410_NAND * const nand =S3C2410_GetBase_NAND();
nand->NFADDR= addr;

}
static inlinevoid NF_SetCE(NFCE_STATE s)

{

S3C2410_NAND * const nand =S3C2410_GetBase_NAND();
switch (s){

case NFCE_LOW:

nand->NFCONF &=~(1<<11);

break;
caseNFCE_HIGH:

nand->NFCONF |=(1<<11);

break;

}

}
static inlinevoid NF_WaitRB(void)

{

S3C2410_NAND * const nand =S3C2410_GetBase_NAND();
while(!(nand->NFSTAT &(1<<0)));

}
static inlinevoid NF_Write(u8 data)

{

S3C2410_NAND * const nand =S3C2410_GetBase_NAND();
nand->NFDATA= data;

}
static inline u8NF_Read(void)

{

S3C2410_NAND * const nand =S3C2410_GetBase_NAND();
return(nand->NFDATA);

}
static inlinevoid NF_Init_ECC(void)

{

S3C2410_NAND * const nand =S3C2410_GetBase_NAND();
nand->NFCONF|= (1<<12);

}
static inline u32NF_Read_ECC(void)

{

S3C2410_NAND * const nand =S3C2410_GetBase_NAND();
return(nand->NFECC);

}
extern ulongnand_probe(ulong physadr);
static inlinevoid NF_Reset(void)

{

int i;
NF_SetCE(NFCE_LOW);

NF_Cmd(0xFF);

for(i = 0; i < 10;i++);

NF_WaitRB();

NF_SetCE(NFCE_HIGH);

}
static inlinevoid NF_Init(void)

{

#if 0

#define TACLS 0

#define TWRPH0 3

#define TWRPH1 0

#else

#define TACLS 0

#define TWRPH0 4

#define TWRPH1 2

#endif
NF_Conf((1<<15)|(0<<14)|(0<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0));

NF_Reset();

}
voidnand_init(void)

{

S3C2410_NAND * const nand =S3C2410_GetBase_NAND();
NF_Init();

#ifdef DEBUG

printf("NAND flash probing at 0x%.8lX\n", (ulong)nand);

#endif

printf ("%4lu MB\n", nand_probe((ulong)nand)>> 20);

}
#endif

3.烧写uboot_1.1.4

先在norflash下启动，操作nand

jimmy smdk2410x》nand erase 0 20000

jimmy smdk2410x》tftp 30800000 u_boot_1.1.4_mtdpart.bin (大小1c164)

jimmy smdk2410x》nand write 30800000 0 1c164

4.操作nand

在nandflash下启动，操作nand