u-boot-1.3.4移植到mini2440+128M nand boot(3)
第
4
阶段
修改适合
S3C2440
的程序
1)
、修改
include/configs/2440.h
将
#define CONFIG_S3C2410 1 /* in a SAMSUNG S3C2410 SoC */
改为：
#define CONFIG_S3C2440
将
#define CONFIG_S3C2410 1 /* in a SAMSUNG S3C2410 SoC */
改为：
#define CONFIG_S3C2440
2 ）、将 /include/common.h 中的
#if defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) || defined(CONFIG_LH7A40X)
改为：
#if defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) || defined(CONFIG_LH7A40X) || defined(CONFIG_S3C2440)
3 ）、修改 /include/s3c24x0.h ，将文件中所有的
#ifdef CONFIG_S3C2410
改为：
#if defined(CONFIG_S3C2410) || defined (CONFIG_S3C2440)
还有nand 的处理：
/* NAND FLASH (see S3C2410 manual chapter 6) */
typedef struct {
S3C24X0_REG32 NFCONF;
#if defined(CONFIG_S3C2440) //modified for 2440
S3C24X0_REG32 NFCONT;
#endif
S3C24X0_REG32 NFCMD;
S3C24X0_REG32 NFADDR;
S3C24X0_REG32 NFDATA;
S3C24X0_REG32 NFSTAT;
S3C24X0_REG32 NFECC;
} /*__attribute__((__packed__))*/ S3C2410_NAND;
typedef struct {
S3C24X0_REG32 NFCONF;
#if defined(CONFIG_S3C2440) //modified for 2440
S3C24X0_REG32 NFCONT;
#endif
S3C24X0_REG32 NFCMD;
S3C24X0_REG32 NFADDR;
S3C24X0_REG32 NFDATA;
S3C24X0_REG32 NFSTAT;
S3C24X0_REG32 NFECC;
} /*__attribute__((__packed__))*/ S3C2410_NAND;
4 ）、将 /cpu/arm920t/s3c24x0/interrupts.c 中的
#if defined(CONFIG_S3C2400) || defined (CONFIG_S3C2410) || defined (CONFIG_TRAB)
修改为：
#if defined(CONFIG_S3C2400) || defined (CONFIG_S3C2410) || defined (CONFIG_TRAB) || defined (CONFIG_S3C2440)
将
#elif defined(CONFIG_S3C2410)
改为：
#elif defined(CONFIG_S3C2410) || defined (CONFIG_S3C2440)
5 ）、将 /cpu/arm920t/s3c24x0/serial.c 文件中的
#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)
将
#elif defined(CONFIG_S3C2410)
改为：
#elif defined(CONFIG_S3C2410) || defined (CONFIG_S3C2440)
将函数 static int serial_init_dev(const int dev_index) 中的
uart->UFCON = 0x07;
改为：
uart->UFCON = 0x00;
6 ）、将 /cpu/arm920t/s3c24x0/speed.c 中的
#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)
将
#elif defined(CONFIG_S3C2410)
改为：
#elif defined(CONFIG_S3C2410) || defined (CONFIG_S3C2440)
在 static ulong get_PLLCLK(int pllreg) 中的
m = ((r & 0xFF000) >> 12) + 8;
p = ((r & 0x003F0) >> 4) + 2;
s = r & 0x3;
后面加上：
#if defined(CONFIG_S3C2440)
if (pllreg == MPLL)
return((CONFIG_SYS_CLK_FREQ * m * 2) / (p << s));
else if (pllreg == UPLL)
#endif
将
/* return HCLK frequency */
ulong get_HCLK(void)
{
S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
return((clk_power->CLKDIVN & 0x2) ? get_FCLK()/2 : get_FCLK());
}
改为：
/* return HCLK frequency */
ulong get_HCLK(void)
{
S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
}
改为：
/* return HCLK frequency */
ulong get_HCLK(void)
{
S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
if (clk_power->CLKDIVN & 0x6)
{
if ((clk_power->CLKDIVN & 0x6)==2) return(get_FCLK()/2);
if ((clk_power->CLKDIVN & 0x6)==6) return((clk_power->CAMDIVN & 0x100) ? get_FCLK()/6 : get_FCLK()/3);
if ((clk_power->CLKDIVN & 0x6)==4) return((clk_power->CAMDIVN & 0x200) ? get_FCLK()/8 : get_FCLK()/4);
return(get_FCLK());
}
else
return(get_FCLK());
{
if ((clk_power->CLKDIVN & 0x6)==2) return(get_FCLK()/2);
if ((clk_power->CLKDIVN & 0x6)==6) return((clk_power->CAMDIVN & 0x100) ? get_FCLK()/6 : get_FCLK()/3);
if ((clk_power->CLKDIVN & 0x6)==4) return((clk_power->CAMDIVN & 0x200) ? get_FCLK()/8 : get_FCLK()/4);
return(get_FCLK());
}
else
return(get_FCLK());
}
7 ）、 /cpu/arm920t/s3c24x0/usb_ohci.c 中的
#elif defined(CONFIG_S3C2410)
改为：
#elif defined(CONFIG_S3C2410) || defined (CONFIG_S3C2440)
8 ）、将 drivers/rtc/s3c24x0_rtc.c 中的
#elif defined(CONFIG_S3C2410)
改为：
#elif defined(CONFIG_S3C2410) || defined (CONFIG_S3C2440)
7 ）、 /cpu/arm920t/s3c24x0/usb_ohci.c 中的
#elif defined(CONFIG_S3C2410)
改为：
#elif defined(CONFIG_S3C2410) || defined (CONFIG_S3C2440)
8 ）、将 drivers/rtc/s3c24x0_rtc.c 中的
#elif defined(CONFIG_S3C2410)
改为：
#elif defined(CONFIG_S3C2410) || defined (CONFIG_S3C2440)
9
）、需要在
/include/s3c24x0.h
文件中添加
CAMDIVN
定义，将
/* CLOCK & POWER MANAGEMENT (see S3C2400 manual chapter 6) */
/* (see S3C2410 manual chapter 7) */
typedef struct {
S3C24X0_REG32 LOCKTIME;
S3C24X0_REG32 MPLLCON;
S3C24X0_REG32 UPLLCON;
S3C24X0_REG32 CLKCON;
S3C24X0_REG32 CLKSLOW;
S3C24X0_REG32 CLKDIVN;
} /*__attribute__((__packed__))*/ S3C24X0_CLOCK_POWER;
改为：
/* CLOCK & POWER MANAGEMENT (see S3C2400 manual chapter 6) */
/* (see S3C2410 manual chapter 7) */
typedef struct {
S3C24X0_REG32 LOCKTIME;
S3C24X0_REG32 MPLLCON;
S3C24X0_REG32 UPLLCON;
S3C24X0_REG32 CLKCON;
S3C24X0_REG32 CLKSLOW;
S3C24X0_REG32 CLKDIVN;
#if defined (CONFIG_S3C2440)
S3C24X0_REG32 CAMDIVN;
#endif
} /*__attribute__((__packed__))*/ S3C24X0_CLOCK_POWER;
/* CLOCK & POWER MANAGEMENT (see S3C2400 manual chapter 6) */
/* (see S3C2410 manual chapter 7) */
typedef struct {
S3C24X0_REG32 LOCKTIME;
S3C24X0_REG32 MPLLCON;
S3C24X0_REG32 UPLLCON;
S3C24X0_REG32 CLKCON;
S3C24X0_REG32 CLKSLOW;
S3C24X0_REG32 CLKDIVN;
} /*__attribute__((__packed__))*/ S3C24X0_CLOCK_POWER;
改为：
/* CLOCK & POWER MANAGEMENT (see S3C2400 manual chapter 6) */
/* (see S3C2410 manual chapter 7) */
typedef struct {
S3C24X0_REG32 LOCKTIME;
S3C24X0_REG32 MPLLCON;
S3C24X0_REG32 UPLLCON;
S3C24X0_REG32 CLKCON;
S3C24X0_REG32 CLKSLOW;
S3C24X0_REG32 CLKDIVN;
#if defined (CONFIG_S3C2440)
S3C24X0_REG32 CAMDIVN;
#endif
} /*__attribute__((__packed__))*/ S3C24X0_CLOCK_POWER;
到这里，
make
一下，把
u-boot.bin
烧到
nand flash
，重新启动，在串口工具上应该可以看到熟悉的
U-Boot 1.3.4 (Oct 9 2009 - 07:34:33)
DRAM: 64 MB
NAND:
第
5
阶段
修改
nand和支持网口芯片DM9000
等的驱动
1）对cpu\arm920t\s3c24x0里的nand.c进行如下修改：
#include <common.h>
#if 0
#define DEBUGN printf
#else
#define DEBUGN(x, args ...) {}
#endif
#define DEBUGN printf
#else
#define DEBUGN(x, args ...) {}
#endif
#if defined(CONFIG_CMD_NAND)
#if !defined(CFG_NAND_LEGACY)
#if !defined(CFG_NAND_LEGACY)
#include <nand.h>
#include <s3c2410.h>
#include <s3c2410.h>
#define __REGb(x) (*(volatile unsigned char *)(x))
#define __REGi(x) (*(volatile unsigned int *)(x))
#define __REGi(x) (*(volatile unsigned int *)(x))
#define NF_BASE 0x4e000000
#if defined(CONFIG_S3C2410)
#define NFCONF __REGi(NF_BASE + 0x0)
#define NFCMD __REGb(NF_BASE + 0x4)
#define NFADDR __REGb(NF_BASE + 0x8)
#define NFDATA __REGb(NF_BASE + 0xc)
#define NFSTAT __REGb(NF_BASE + 0x10)
#define NFECC0 __REGb(NF_BASE + 0x14)
#define NFECC1 __REGb(NF_BASE + 0x15)
#define NFECC2 __REGb(NF_BASE + 0x16)
#if defined(CONFIG_S3C2410)
#define NFCONF __REGi(NF_BASE + 0x0)
#define NFCMD __REGb(NF_BASE + 0x4)
#define NFADDR __REGb(NF_BASE + 0x8)
#define NFDATA __REGb(NF_BASE + 0xc)
#define NFSTAT __REGb(NF_BASE + 0x10)
#define NFECC0 __REGb(NF_BASE + 0x14)
#define NFECC1 __REGb(NF_BASE + 0x15)
#define NFECC2 __REGb(NF_BASE + 0x16)
#define S3C2410_NFCONF_EN (1<<15)
#define S3C2410_NFCONF_512BYTE (1<<14)
#define S3C2410_NFCONF_4STEP (1<<13)
#define S3C2410_NFCONF_INITECC (1<<12)
#define S3C2410_NFCONF_nFCE (1<<11)
#define S3C2410_NFCONF_TACLS(x) ((x)<<8)
#define S3C2410_NFCONF_TWRPH0(x) ((x)<<4)
#define S3C2410_NFCONF_TWRPH1(x) ((x)<<0)
#define S3C2410_NFCONF_512BYTE (1<<14)
#define S3C2410_NFCONF_4STEP (1<<13)
#define S3C2410_NFCONF_INITECC (1<<12)
#define S3C2410_NFCONF_nFCE (1<<11)
#define S3C2410_NFCONF_TACLS(x) ((x)<<8)
#define S3C2410_NFCONF_TWRPH0(x) ((x)<<4)
#define S3C2410_NFCONF_TWRPH1(x) ((x)<<0)
#elif defined(CONFIG_S3C2440)
#define NFCONF __REGi(NF_BASE + 0x0)
#define NFCONT __REGi(NF_BASE + 0x4)
#define NFCMD __REGb(NF_BASE + 0x8)
#define NFADDR __REGb(NF_BASE + 0xc)
#define NFDATA __REGb(NF_BASE + 0x10)
#define NFMECCD0 __REGi(NF_BASE + 0x14)
#define NFMECCD1 __REGi(NF_BASE + 0x18)
#define NFSECCD __REGi(NF_BASE + 0x1C)
#define NFSTAT __REGb(NF_BASE + 0x20)
#define NFSTAT0 __REGi(NF_BASE + 0x24)
#define NFSTAT1 __REGi(NF_BASE + 0x28)
#define NFMECC0 __REGi(NF_BASE + 0x2C)
#define NFMECC1 __REGi(NF_BASE + 0x30)
#define NFSECC __REGi(NF_BASE + 0x34)
#define NFSBLK __REGi(NF_BASE + 0x38)
#define NFEBLK __REGi(NF_BASE + 0x3c)
#define NFCONT __REGi(NF_BASE + 0x4)
#define NFCMD __REGb(NF_BASE + 0x8)
#define NFADDR __REGb(NF_BASE + 0xc)
#define NFDATA __REGb(NF_BASE + 0x10)
#define NFMECCD0 __REGi(NF_BASE + 0x14)
#define NFMECCD1 __REGi(NF_BASE + 0x18)
#define NFSECCD __REGi(NF_BASE + 0x1C)
#define NFSTAT __REGb(NF_BASE + 0x20)
#define NFSTAT0 __REGi(NF_BASE + 0x24)
#define NFSTAT1 __REGi(NF_BASE + 0x28)
#define NFMECC0 __REGi(NF_BASE + 0x2C)
#define NFMECC1 __REGi(NF_BASE + 0x30)
#define NFSECC __REGi(NF_BASE + 0x34)
#define NFSBLK __REGi(NF_BASE + 0x38)
#define NFEBLK __REGi(NF_BASE + 0x3c)
#define S3C2440_NFCONT_nCE (1<<1)
#define S3C2440_ADDR_NALE 0x0c
#define S3C2440_ADDR_NCLE 0x08
#endif
static void s3c2410_hwcontrol(struct mtd_info *mtd, int cmd)
{
struct nand_chip *chip = mtd->priv;
#define S3C2440_ADDR_NALE 0x0c
#define S3C2440_ADDR_NCLE 0x08
#endif
static void s3c2410_hwcontrol(struct mtd_info *mtd, int cmd)
{
struct nand_chip *chip = mtd->priv;
DEBUGN("hwcontrol(): 0x%02x: ", cmd);
#if defined(CONFIG_S3C2410)
switch (cmd) {
case NAND_CTL_SETNCE:
NFCONF &= ~S3C2410_NFCONF_nFCE;
DEBUGN("NFCONF=0x%08x\n", NFCONF);
break;
case NAND_CTL_CLRNCE:
NFCONF |= S3C2410_NFCONF_nFCE;
DEBUGN("NFCONF=0x%08x\n", NFCONF);
break;
case NAND_CTL_SETALE:
chip->IO_ADDR_W = NF_BASE + 0x8;
DEBUGN("SETALE\n");
break;
case NAND_CTL_SETCLE:
chip->IO_ADDR_W = NF_BASE + 0x4;
DEBUGN("SETCLE\n");
break;
default:
chip->IO_ADDR_W = NF_BASE + 0xc;
break;
}
#elif defined(CONFIG_S3C2440)
switch (cmd) {
case NAND_CTL_SETNCE:
NFCONF &= ~S3C2440_NFCONT_nCE;
DEBUGN("NFCONF=0x%08x\n", NFCONF);
break;
case NAND_CTL_CLRNCE:
NFCONF |= S3C2440_NFCONT_nCE;
DEBUGN("NFCONF=0x%08x\n", NFCONF);
break;
case NAND_CTL_SETALE:
chip->IO_ADDR_W = NF_BASE + S3C2440_ADDR_NALE;
DEBUGN("SETALE\n");
break;
case NAND_CTL_SETCLE:
chip->IO_ADDR_W = NF_BASE + S3C2440_ADDR_NCLE;
DEBUGN("SETCLE\n");
break;
default:
chip->IO_ADDR_W = NF_BASE + 0x10; //注意是0x10
break;
}
#endif
return;
}
switch (cmd) {
case NAND_CTL_SETNCE:
NFCONF &= ~S3C2410_NFCONF_nFCE;
DEBUGN("NFCONF=0x%08x\n", NFCONF);
break;
case NAND_CTL_CLRNCE:
NFCONF |= S3C2410_NFCONF_nFCE;
DEBUGN("NFCONF=0x%08x\n", NFCONF);
break;
case NAND_CTL_SETALE:
chip->IO_ADDR_W = NF_BASE + 0x8;
DEBUGN("SETALE\n");
break;
case NAND_CTL_SETCLE:
chip->IO_ADDR_W = NF_BASE + 0x4;
DEBUGN("SETCLE\n");
break;
default:
chip->IO_ADDR_W = NF_BASE + 0xc;
break;
}
#elif defined(CONFIG_S3C2440)
switch (cmd) {
case NAND_CTL_SETNCE:
NFCONF &= ~S3C2440_NFCONT_nCE;
DEBUGN("NFCONF=0x%08x\n", NFCONF);
break;
case NAND_CTL_CLRNCE:
NFCONF |= S3C2440_NFCONT_nCE;
DEBUGN("NFCONF=0x%08x\n", NFCONF);
break;
case NAND_CTL_SETALE:
chip->IO_ADDR_W = NF_BASE + S3C2440_ADDR_NALE;
DEBUGN("SETALE\n");
break;
case NAND_CTL_SETCLE:
chip->IO_ADDR_W = NF_BASE + S3C2440_ADDR_NCLE;
DEBUGN("SETCLE\n");
break;
default:
chip->IO_ADDR_W = NF_BASE + 0x10; //注意是0x10
break;
}
#endif
return;
}
static int s3c2410_dev_ready(struct mtd_info *mtd)
{
DEBUGN("dev_ready\n");
return (NFSTAT & 0x01);
}
{
DEBUGN("dev_ready\n");
return (NFSTAT & 0x01);
}
#ifdef CONFIG_S3C2410_NAND_HWECC
void s3c2410_nand_enable_hwecc(struct mtd_info *mtd, int mode)
{
DEBUGN("s3c2410_nand_enable_hwecc(%p, %d)\n", mtd ,mode);
NFCONF |= S3C2410_NFCONF_INITECC;
}
void s3c2410_nand_enable_hwecc(struct mtd_info *mtd, int mode)
{
DEBUGN("s3c2410_nand_enable_hwecc(%p, %d)\n", mtd ,mode);
NFCONF |= S3C2410_NFCONF_INITECC;
}
static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
u_char *ecc_code)
{
ecc_code[0] = NFECC0;
ecc_code[1] = NFECC1;
ecc_code[2] = NFECC2;
DEBUGN("s3c2410_nand_calculate_hwecc(%p,): 0x%02x 0x%02x 0x%02x\n",
mtd , ecc_code[0], ecc_code[1], ecc_code[2]);
u_char *ecc_code)
{
ecc_code[0] = NFECC0;
ecc_code[1] = NFECC1;
ecc_code[2] = NFECC2;
DEBUGN("s3c2410_nand_calculate_hwecc(%p,): 0x%02x 0x%02x 0x%02x\n",
mtd , ecc_code[0], ecc_code[1], ecc_code[2]);
return 0;
}
}
static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat,
u_char *read_ecc, u_char *calc_ecc)
{
if (read_ecc[0] == calc_ecc[0] &&
read_ecc[1] == calc_ecc[1] &&
read_ecc[2] == calc_ecc[2])
return 0;
u_char *read_ecc, u_char *calc_ecc)
{
if (read_ecc[0] == calc_ecc[0] &&
read_ecc[1] == calc_ecc[1] &&
read_ecc[2] == calc_ecc[2])
return 0;
printf("s3c2410_nand_correct_data: not implemented\n");
return -1;
}
#endif
return -1;
}
#endif
int board_nand_init(struct nand_chip *nand)
{
u_int32_t cfg;
u_int8_t tacls, twrph0, twrph1;
S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
{
u_int32_t cfg;
u_int8_t tacls, twrph0, twrph1;
S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
DEBUGN("board_nand_init()\n");
clk_power->CLKCON |= (1 << 4);
#if defined(CONFIG_S3C2410)
/* initialize hardware */
twrph0 = 3; twrph1 = 0; tacls = 0;
/* initialize hardware */
twrph0 = 3; twrph1 = 0; tacls = 0;
cfg = S3C2410_NFCONF_EN;
cfg |= S3C2410_NFCONF_TACLS(tacls - 1);
cfg |= S3C2410_NFCONF_TWRPH0(twrph0 - 1);
cfg |= S3C2410_NFCONF_TWRPH1(twrph1 - 1);
cfg |= S3C2410_NFCONF_TACLS(tacls - 1);
cfg |= S3C2410_NFCONF_TWRPH0(twrph0 - 1);
cfg |= S3C2410_NFCONF_TWRPH1(twrph1 - 1);
NFCONF = cfg;
/* initialize nand_chip data structure */
nand->IO_ADDR_R = nand->IO_ADDR_W = 0x4e00000c;
nand->IO_ADDR_R = nand->IO_ADDR_W = 0x4e00000c;
/* read_buf and write_buf are default */
/* read_byte and write_byte are default */
/* read_byte and write_byte are default */
/* hwcontrol always must be implemented */
nand->hwcontrol = s3c2410_hwcontrol;
nand->hwcontrol = s3c2410_hwcontrol;
nand->dev_ready = s3c2410_dev_ready;
#ifdef CONFIG_S3C2410_NAND_HWECC
nand->enable_hwecc = s3c2410_nand_enable_hwecc;
nand->calculate_ecc = s3c2410_nand_calculate_ecc;
nand->correct_data = s3c2410_nand_correct_data;
nand->eccmode = NAND_ECC_HW3_512;
#else
//nand->eccmode = NAND_ECC_SOFT;
nand->enable_hwecc = s3c2410_nand_enable_hwecc;
nand->calculate_ecc = s3c2410_nand_calculate_ecc;
nand->correct_data = s3c2410_nand_correct_data;
nand->eccmode = NAND_ECC_HW3_512;
#else
//nand->eccmode = NAND_ECC_SOFT;
nand->eccmode = NAND_ECC_NONE; /*这个ECC先去掉，否则你使用nand write命令和nand read会boot 不起内核*/
#endif
#endif
#ifdef CONFIG_S3C2410_NAND_BBT
nand->options = NAND_USE_FLASH_BBT;
#else
nand->options = 0;
#endif
nand->options = NAND_USE_FLASH_BBT;
#else
nand->options = 0;
#endif
#elif defined(CONFIG_S3C2440)
twrph0 = 6; twrph1 = 2; tacls = 0;
cfg = (tacls<<12)|(twrph0<<8)|(twrph1<<4);
NFCONF = cfg;
cfg = (1<<6)|(1<<4)|(0<<1)|(1<<0);
NFCONT = cfg;
twrph0 = 6; twrph1 = 2; tacls = 0;
cfg = (tacls<<12)|(twrph0<<8)|(twrph1<<4);
NFCONF = cfg;
cfg = (1<<6)|(1<<4)|(0<<1)|(1<<0);
NFCONT = cfg;
/* initialize nand_chip data structure */
nand->IO_ADDR_R = nand->IO_ADDR_W = (void *)0x4e000010;
nand->IO_ADDR_R = nand->IO_ADDR_W = (void *)0x4e000010;
/* read_buf and write_buf are default */
/* read_byte and write_byte are default */
/* read_byte and write_byte are default */
/* hwcontrol always must be implemented */
nand->hwcontrol = s3c2410_hwcontrol;
nand->dev_ready = s3c2410_dev_ready;
#ifdef CONFIG_S3C2440_NAND_HWECC
nand->enable_hwecc = s3c2410_nand_enable_hwecc;
nand->calculate_ecc = s3c2410_nand_calculate_ecc;
nand->correct_data = s3c2410_nand_correct_data;
nand->eccmode = NAND_ECC_HW3_512;
#else
// nand->eccmode = NAND_ECC_SOFT;
nand->hwcontrol = s3c2410_hwcontrol;
nand->dev_ready = s3c2410_dev_ready;
#ifdef CONFIG_S3C2440_NAND_HWECC
nand->enable_hwecc = s3c2410_nand_enable_hwecc;
nand->calculate_ecc = s3c2410_nand_calculate_ecc;
nand->correct_data = s3c2410_nand_correct_data;
nand->eccmode = NAND_ECC_HW3_512;
#else
// nand->eccmode = NAND_ECC_SOFT;
nand->eccmode = NAND_ECC_NONE; /*这个ECC先去掉，否则你使用nand write命令和nand read会boot 不起内核*/
#endif
#endif
#ifdef CONFIG_S3C2440_NAND_BBT
nand->options = NAND_USE_FLASH_BBT;
#else
nand->options = 0;
#endif
nand->options = NAND_USE_FLASH_BBT;
#else
nand->options = 0;
#endif
#endif
DEBUGN("end of nand_init\n");
return 0;
}
}
#else
#error "U-Boot legacy NAND support not available for S3C2410"
#endif
#endif
#error "U-Boot legacy NAND support not available for S3C2410"
#endif
#endif
2）对include\configs、mini2440.h进行如下修改：
增加
#define CONFIG_CMD_NAND /* NAND support */
#define CFG_ENV_IS_IN_NAND 1 /* */
#define CFG_ENV_OFFSET 0X40000
/* u-boot:0x00000--0x40000,param:0x40000--0x60000,kernel:0x60000--0x260000 128K block*/
#define CFG_ENV_SIZE 0x10000 /* Total Size of Environment Sector */
#define CFG_ENV_OFFSET 0X40000
/* u-boot:0x00000--0x40000,param:0x40000--0x60000,kernel:0x60000--0x260000 128K block*/
#define CFG_ENV_SIZE 0x10000 /* Total Size of Environment Sector */
//#define CONFIG_SETUP_MEMORY_TAGS 1
//#define CONFIG_CMDLINE_TAG 1
/*nand flash define*/
#if defined(CONFIG_CMD_NAND)
#define CFG_MAX_NAND_DEVICE 1 //just one nand flash chip on board
#define CFG_NAND_BASE 0x4e000000 //nand flash base address
#if defined(CONFIG_CMD_NAND)
#define CFG_MAX_NAND_DEVICE 1 //just one nand flash chip on board
#define CFG_NAND_BASE 0x4e000000 //nand flash base address
#define SECTORSIZE 2048
/* one page size*/
#define NAND_SECTOR_SIZE SECTORSIZE
#define NAND_BLOCK_MASK (SECTORSIZE - 1)
/* one page size*/
#define NAND_SECTOR_SIZE SECTORSIZE
#define NAND_BLOCK_MASK (SECTORSIZE - 1)
/*
* Nandflash Boot
*/
#define CONFIG_S3C2440_NAND_BOOT 1
#endif
* Nandflash Boot
*/
#define CONFIG_S3C2440_NAND_BOOT 1
#endif
3）增加对网口芯片的支持：
同在mini2440.h里，修改Hardware drivers的定义：
/*
* Hardware drivers
*/
//#define CONFIG_DRIVER_CS8900 1 /* we have a CS8900 on-board */
//#define CS8900_BASE 0x19000300
//#define CS8900_BUS16 1 /* the Linux driver does accesses as shorts */
#define CONFIG_DRIVER_DM9000 1
#define CONFIG_DM9000_BASE 0x20000300
#define DM9000_IO CONFIG_DM9000_BASE
#define DM9000_DATA (CONFIG_DM9000_BASE+4)
#define CONFIG_DM9000_USE_16BIT
* Hardware drivers
*/
//#define CONFIG_DRIVER_CS8900 1 /* we have a CS8900 on-board */
//#define CS8900_BASE 0x19000300
//#define CS8900_BUS16 1 /* the Linux driver does accesses as shorts */
#define CONFIG_DRIVER_DM9000 1
#define CONFIG_DM9000_BASE 0x20000300
#define DM9000_IO CONFIG_DM9000_BASE
#define DM9000_DATA (CONFIG_DM9000_BASE+4)
#define CONFIG_DM9000_USE_16BIT
并确保#define CONFIG_CMD_NET /* bootp, tftpboot, rarpboot */打开，设置相关TFTP操作的定义，如下：
#define CONFIG_BOOTDELAY 3
#define CONFIG_BOOTARGS "root=ramfs devfs=mount console=ttySA0,115200n81"
#define CONFIG_ETHADDR 08:00:3e:26:0a:5b
#define CONFIG_NETMASK 255.255.255.0
#define CONFIG_IPADDR 192.168.1.250
#define CONFIG_SERVERIP 192.168.1.100
#define CONFIG_BOOTFILE "zImage.img"
/*#define CONFIG_BOOTCOMMAND "tftp; bootm"*/
#define CONFIG_BOOTCOMMAND "tftp 0x30008000 zImage.img\; bootm 30008000"
#define CONFIG_BOOTARGS "root=ramfs devfs=mount console=ttySA0,115200n81"
#define CONFIG_ETHADDR 08:00:3e:26:0a:5b
#define CONFIG_NETMASK 255.255.255.0
#define CONFIG_IPADDR 192.168.1.250
#define CONFIG_SERVERIP 192.168.1.100
#define CONFIG_BOOTFILE "zImage.img"
/*#define CONFIG_BOOTCOMMAND "tftp; bootm"*/
#define CONFIG_BOOTCOMMAND "tftp 0x30008000 zImage.img\; bootm 30008000"
到这里，make一下，你可以把zImage通过TFTP给BOOT 起来了。
注意zImage必须使用u-boot-1.3.4\toolsl里的mkimage加上文件头才能被u-boot boot起来，本人写了一个sh文件：
#!/bin/sh
mkimage -n 'linux-2.6.31' -A arm -O linux -T kernel -C none -a 0x30008000 -e 0x30008040 -d zImage zImage.img