s5pc100开发板uboot移植

相关软件下载地址：http://pan.baidu.com/s/16yo8Y

适用于fsc100开发板

交叉编译器arm-cortex_a8-linux-gnueabi-gcc

u-boot-2010.03

一、建立自己的平台

1、 下载源码

我们可以在下面这个网站上下载最新的和以前任一版本的uboot

ftp://ftp.denx.de/pub/u-boot/

2、解压uboot源码并进入目录

$ tar xvf u-boot-2010.03.tar.gz

$ cd u-boot-2010.03

3、添加fsc100平台信息

我们关心的板级相关文件或目录

u-boot-2010.03/Makefile

u-boot- 2010.03/include/configs/smdkc100.h

u-boot- 2010.03 /cpu/arm_cortexa8/start.S

u-boot- 2010.03 /board/samsung/smdkc100

u-boot- 2010.03 /lib_arm

smdkc100是使用s5pc100芯片的参考板，我们在其基础之上移植fsc100

$ cd board/samsung/

$ cp –a smdkc100 fsc100

$ cd fsc100

$ mv smdkc100.c fsc100.c

$ vim Makefile

修改

COBJS-y := smdkc100.o

为

COBJS-y := fsc100.o

$ cd include/configs

$ cp smdkc100.h fsc100.h

修改u-boot顶层目录下的Makefile，指定交叉工具链

$ vim Makefile

在

ifeq ($(HOSTARCH, $(ARCH))

CROSS_COMPILE ?=

endif

下添加：

ifeq (arm, $(ARCH))

CROSS_COMPILE ?= arm-cortex_a8-linux-gnueabi-

endif

在u-boot顶层目录下的Makefile中添加fsc100配置信息

$ vim Makefile

在

smdkc100_config: unconfig

@$(MKCONFIG) $(@:_config=) arm arm_cortexa8 smdkc100 samsung s5pc1xx

下添加：

fsc100_config: unconfig

@$(MKCONFIG) $(@:_config=) arm arm_cortexa8 fsc100 samsung s5pc1xx

1、编译u-boot-2010.03

$ make distclean

$ make fsc100_config

$ make

编译完成后生成的u-boot.bin就是可执行的镜像文件。但是该文件只能在smdkc100平台上运行，我们需要对u-boot源代码进行相应的修改。

二、针对我们的fsc100平台进行相应的移植

1、修改include/configs/fsc100.h

修改内存基址

#define CONFIG_SYS_SDRAM_BASE 0x30000000

为

#define CONFIG_SYS_SDRAM_BASE 0x20000000

把

#undef CONFIG_CMD_NAND

改成

#define CONFIG_CMD_NAND

把

#undef CONFIG_CMD_NET

改成

#define CONFIG_CMD_NET

在

#define CONFIG_CMD_NAND

后添加

#define CONFIG_SYS_ICACHE_OFF 1

注释以下内容

#define CONFIG_CMD_ONENAND

注释以下内容

#define MTDIDS_DEFAULT “onenand…”

……

#define CONFIG_UPDATEB “updateb=……”

注释以下内容

#define CONFIG_EXTRA_ENV_SETTINGS \

……

“ubi=enabled”

修改提示符

#define CONFIG_SYS_PROMPT “SMDKC100 # ”

为

#define CONFIG_SYS_PROMPT “FSC100 # ”

修改

#define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_SDRAM_BASE+0x5e00000)

为

#define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_SDRAM_BASE+0x10000000)

修改内核加载地址

#define CONFIG_SYS_LOAD_ADDR CONFIG_SYS_SDRAM_BASE

为

#define CONFIG_SYS_LOAD_ADDR (CONFIG_SYS_SDRAM_BASE+0x8000)

修改内存容量

#define PHYS_SDRAM_1_SIZE (128 << 20)

为

#define PHYS_SDRAM_1_SIZE (256 << 20)

修改环境变量存放位置

#define CONFIG_ENV_IS_IN_ONENAND 1

为

#define CONFIG_ENV_IS_IN_NAND 1

注释以下内容

从

#define CONFIG_USE_ONENAND_BOARD_INIT

到

#define CONFIG_SYS_ONENAND_BASE 0xE7100000

在

#define CONFIG_DOS_PARTITION 1

下面添加如下信息

添加NAND信息

#define CONFIG_SYS_MAX_NAND_DEVICE 1

#define CONFIG_SYS_NAND_MAX_CHIPS 1

#define CONFIG_SYS_NAND_BASE 0xE7200000

#define CONFIG_NAND_S5PC100 1

#define CONFIG_NAND_BL1_8BIT_ECC 1

#define CFG_NAND_HWECC 1

#define NAND_ENABLE_CE() (NFCONT_REG &= ~(1<<1))

#define NAND_DISABLE_CE() (NFCONT_REG |= (1<<1))

#define NF_TRANSRnB() do {while (! (NFSTAT_REG & (1<<0)) );} while(0)

添加网卡信息

#ifdef CONFIG_CMD_NET

#define CONFIG_NET_MULTI

#define CONFIG_CMD_PING 1

#define CONFIG_DRIVER_DM9000 1

#define CONFIG_DM9000_BASE 0x88000000

#define DM9000_IO CONFIG_DM9000_BASE

#define DM9000_DATA (CONFIG_DM9000_BASE + 4)

#define CONFIG_DM9000_USE_16BIT

#define CONFIG_DM9000_NO_SROM 1

#define CONFIG_ETHADDR 11:22:33:44:55:66

#define CONFIG_IPADDR 192.168.1.200

#define CONFIG_SERVERIP 192.168.1.100

#define CONFIG_GATEWAYIP 192.168.1.1

#define CONFIG_NETMASK 255.255.255.0

#endif

1、复制lowlevel_init.S mem_setup.S到board/samsung/fsc100

上述代码专门针对fsc100使用的内存进行初始化，可参考相关芯片手册

2、复制fsc100.c到board/smsung/fsc100 覆盖原来的fsc100.c

fsc100.c 包含的是板级初始化函数

3、在board/samsung/fsc100/目录下添加nand_cp.c

#include <common.h>

#ifdef CONFIG_S5PC1XX

#include <asm/io.h>

#include <linux/mtd/nand.h>

#define _REG__(x) (*(volatile unsigned long *)(x))

#define _REGb__(x) (*(volatile unsigned char *)(x))

#define NFCONT_REG _REG__(0xE7200004)

#define NFCMD_REG _REG__(0xE7200008)

#define NFADDR_REG _REG__(0xE720000C)

#define NFDATA8_REG _REGb__(0xE7200010)

#define NFSTAT_REG _REG__(0xE7200028)

#define NAND_CONTROL_ENABLE() (NFCONT_REG |= (1 << 0))

static int nandll_read_page (uchar *buf, ulong addr, int large_block)

{

int i;

int page_size = 512;

if (large_block) page_size = 2048;

NAND_ENABLE_CE();

NFCMD_REG = NAND_CMD_READ0;

/* Write Address */

NFADDR_REG = 0;

if (large_block) NFADDR_REG = 0;

NFADDR_REG = (addr) & 0xff;

NFADDR_REG = (addr >> 8) & 0xff;

NFADDR_REG = (addr >> 16) & 0xff;

if (large_block) NFCMD_REG = NAND_CMD_READSTART;

NF_TRANSRnB();

for (i=0; i<page_size; i++) {

*buf++ = NFDATA8_REG;

}

NAND_DISABLE_CE();

return 0;

}

static int nandll_read_blocks (ulong dst_addr, ulong size, int large_block)

{

uchar *buf = (uchar *)dst_addr;

int i, pages;

uint page_shift = 9;

if (large_block) page_shift = 11;

pages = size >> page_shift;

for (i=0; i<pages; i++) {

nandll_read_page(buf, i, large_block);

buf += (1 << page_shift);

}

return 0;

}

int copy_uboot_to_ram (void)

{

int i, large_block = 0;

vu_char id;

NAND_CONTROL_ENABLE();

NAND_ENABLE_CE();

NFCMD_REG = NAND_CMD_READID;

NFADDR_REG = 0x0;

/* wait for a while */

for (i=0; i<200; i++);

id = NFDATA8_REG;

if (id > 0x80) large_block = 1;

return nandll_read_blocks(0x2ff80000, 0x40000, large_block);

}

#endif

1、修改board/samsung/fsc100/Makefile

把

SOBJS := lowlevel_init.o

改成

SOBJS := lowlevel_init.o mem_setup.o

把

COBJS-y := fsc100.o

改成

COBJS-y := fsc100.o nand_cp.o

2、修改board/samsun/fsc100/config.mk

把

TEXT_BASE = 0x34800000

改成

TEXT_BASE = 0x2FF80000

3、修改cpu/arm_cortexa8/start.S

在

#ifndef CONFIG_SKIP_LOWLEVEL_INIT

bl cpu_init_crit

#endif

之后添加如下代码

/* 判断uboot是否在内存中运行 */

ldr r0, =_TEXT_BASE

adr r1, _TEXT_BASE

cmp r0, r1

beq stack_setup

ldr sp, =(0x22000000)

bl copy_uboot_to_ram

b stack_setup

4、 链接文件的修改

修改cpu/arm_cortexa8/u-boot.lds为：

……

.text :

{

cpu/arm_cortexa8/start.o (.text)

board/samsung/fsc100/lowlevel_init.o

board/samsung/fsc100/mem_setup.o

board/samsung/fsc100/nand_cp.o

*(.text)

}

……

5、复制s5pc100.h s5pc1x0.h hardware.h 到 include/asm-arm/arch-s5pc1xx/

6、复制s5p_nand.c到drivers/mtd/nand/

7、修改drivers/mtd/nand/Makefile

在

COBJS-$(CONFIG_NAND_S3C64XX) += s3c64xx.o

后面添加

COBJS-$(CONFIG_NAND_S5PC100) += s5p_nand.o

8、修改include/linux/mtd/mtd-abi.h

struct nand_ecclayout {

……

struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES];

uint32_t useecc;

uint32_t reserved;

};

9、在lib_arm/board.c中添加网卡初始化代码

在

eth_initialize(gd->bd);

后面添加

eth_init(gd->bd);

10、 修改网卡驱动drivers/net/dm9xxx.c

在函数dm9000_init中，

DM9000_iow(DM9000_IMR, IMR_PAR);

之后的内容都注释掉，直到该函数结束(return 0之前)

11、 修改include/net.h

static inline int is_multicast_ether_addr(const u8 *addr)

{

return (0x01 == addr[0]);

}

12、 修改net/net.c

在 int NetArpWaitTry; 后添加如下代码

ulong timer_clk;

void ArpTimeoutCheck(void)

{

……

把

t = get_timer(0);

改成

t = get_timer(0) / (timer_clk / CONFIG_SYS_HZ);

}

extern unsigned long (*get_pclk)(void);

int NetLoop(proto_t protocol)

{

bd_t *bd = gd->bd;

添加如下代码：

timer_clk = get_pclk() / (16 * 2);

……

注释以下代码

eth_halt();

eth_set_current();

if (eth_init(bd) < 0) {

eth_halt();

return -1;

}

把

if (timeHandler && ( … > timeDelta) {

改成

ulong t;

t = get_timer(0) / (timer_clk / CONFIG_SYS_HZ);

if (timeHandler && (t - timeStart) > timeDelta) {

……

}

void NetSetTimeout(ulong iv, thand_f *f)

{

把

timeStart = get_timer(0);

改成

timeStart = get_timer(0) / (timer_clk / CONFIG_SYS_HZ);

}

int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len)

{

……

把

NetArpWaitTimerStart = get_timer(0);

改成

NetArpWaitTimerStart = get_timer(0) / (timer_clk / CONFIG_SYS_HZ);

……

}

int PingSend(void)

{

……

把

NetArpWaitTimerStart = get_timer(0);

改成

NetArpWaitTimerStart = get_timer(0) / (timer_clk / CONFIG_SYS_HZ);

……

}

注释该文件中所有的eth_halt()

1、 go命令的优化

修改该common/cmd_boot.c

int do_go (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])

{

ulong addr, rc;

int rcode = 0;

if (argc < 2) {

return cmd_usage(cmdtp);

}

/**************** added by farsight 2011-12-18 *****************/

char *cmdline = getenv("bootargs");

struct param_struct *kernel_params=(struct param_struct *)0x20000100;

printf("setup linux parameters at 0x20000100\n");

memset(kernel_params, 0, sizeof(struct param_struct));

kernel_params->u1.s.page_size=4096;

kernel_params->u1.s.nr_pages=0x10000000>>12;

memcpy(kernel_params->commandline, cmdline, strlen(cmdline)+1);

printf("linux command line is: \"%s\"\n",cmdline);

/***************************************************************/

addr = simple_strtoul(argv[1], NULL, 16);

printf ("## Starting application at 0x%08lX ...\n", addr);

/******************* added by farsight 2011-12-18 ******************/

__asm__(

"ldr r1, =1826\n"

"mov ip, #0\n"

"mcr p15, 0, ip, c8, c7, 0\n"

"mcr p15, 0, ip, c7, c5, 0\n"

"mcr p15, 0, ip, c7, c5, 6\n"

"mcr p15, 0, ip, c7, c10, 4\n"

"mcr p15, 0, ip, c7, c5, 4\n"

"mrc p15, 0, ip, c1, c0, 0\n"

"bic ip, ip, #0x00002000\n"

"bic ip, ip, #0x00000007\n"

"orr ip, ip, #0x00000002\n"

"orr ip, ip, #0x00000800\n"

"bic ip, ip, #0x00001000\n"

"mcr p15, 0, ip, c1, c0, 0\n"

"mov pc, %0\n"

"nop\n"

:"r"(addr)

);

/***************************************************************/

rc = do_go_exec ((void *)addr, argc - 1, argv + 1);

if (rc != 0) rcode = 1;

printf ("## Application terminated, rc = 0x%lX\n", rc);

return rcode;

}

三、重新编译

$ make distclean

$ make fsc100_config

$ make

这样我们就得到能够在fsc100平台上使用的u-boot.bin

巴特西

s5pc100开发板uboot移植

最新文章

热门文章