ok6410 u-boot-2012.04.01移植五支援DM9000

繼ok6410 u-boot-2012.04.01移植四後，開發闆基本已支援MLC NAND,但還有一些細節地方修改，這節增加DM9000支援，通過網卡tftp程式到記憶體，接着通過NAND指令寫到NAND,這一過程肯定會遇到很多問題，遇到後再一個個解決。

開發環境：

系統：ubuntu 10.04.4

單闆：ok6410

NAND FLASH：K9GAG08U0D 2048MB

DDR:K4X1G163PCX2 256MB

NET：DM9000AEP

編譯器：arm-linux-gcc-4.3.2

搭建開發環境詳見ubuntu 10.04.4開發環境配置。

目标：

1.闆級初始化,支援單闆ok6410

2.修改u-boot,支援NAND啟動

3.增加菜單update功能

4.增加MLC NAND支援

5.支援DM9000,網卡下載下傳程式

6.修改環境變量以及mtdpart分區

7.u-boot裁剪及制作更新檔

一、修改源碼支援DM9000

增加dm9000aep_init設定記憶體控制器

void dm9000aep_init(void)

{

SROM_BW |=  (0XFF<<4);

}

在start.S增加bl dm9000aep_init，其實在以前支援單闆是已添加。

分析eth_initialize(gd->bd);->board_eth_init在board/samsung/smdk6410/smdk6410.c修改board_eth_init(bd_t *bis)，改成如下：

#ifdef CONFIG_CMD_NET

int board_eth_init(bd_t *bis)

{

int rc = 0;

#ifdef CONFIG_CS8900

rc = cs8900_initialize(0, CONFIG_CS8900_BASE);

#endif

#ifdef CONFIG_DRIVER_DM9000

rc = dm9000_initialize(bis);

#endif

return rc;

}

#endif

接着頭檔案include/configs/smdk6410.h增加DM9000網卡支援

 #if 0

#define CONFIG_CS8900

#define CONFIG_CS8900_BASE   0x18800300

#define CONFIG_CS8900_BUS16

#else

#define CONFIG_DRIVER_DM9000 1

#define CONFIG_DM9000_BASE 0x18000000 //0x20000300                                 

#define DM9000_IO CONFIG_DM9000_BASE

#define DM9000_DATA (CONFIG_DM9000_BASE+4)

#define CONFIG_DM9000_USE_16BIT 1

//#define CONFIG_DM9000_DEBUG     1

#endif

#define CONFIG_NETMASK 255.255.255.0

#define CONFIG_IPADDR 172.16.1.111

#define CONFIG_SERVERIP       172.16.1.114

#define CONFIG_ETHADDR 00:0c:29:4d:e4:f4

編譯試試看網卡是否OK

[email protected]:/si/OK6410/u-boot-2012.04.01$ make

二、編譯測試網卡

剛剛編譯的程式，燒寫OK，重新開機下面測試網卡

U-Boot 2012.04.01 (Jul 01 2013 - 21:27:53) for SMDK6400

CPU:     [email protected]

         Fclk = 532MHz, Hclk = 133MHz, Pclk = 66MHz (ASYNC Mode) 

Board:   SMDK6400

DRAM:  128 MiB

WARNING: Caches not enabled

Flash: 0 KB

NAND:  select s3c_nand_oob_mlc_64

NAND_ECC_NONE selected by board driver. This is not recommended !!

2048 MiB

*** Warning - bad CRC, using default environment

In:    serial

Out:   serial

Err:   serial

Net:   dm9000

Hit any key to stop autoboot:  0 

##### Update menu for ok6410 #####

[g] get file, and write to nand flash 0 block

[b] Boot the system

[r] Reset the u-boot

[q] Quit from menu

Enter your selection: q

SMDK6410 # ping 172.16.1.134

dm9000 i/o: 0x18000000, id: 0x90000a46 

DM9000: running in 16 bit mode

MAC: 00:0c:29:4d:e4:f4

operating at 100M full duplex mode

Using dm9000 device

host 172.16.1.134 is alive

SMDK6410 # 

可以ping通，可以根據自己情況設定網關，ping自己的主機。下面測試看能否用NAND燒寫程式，當然是不行的，測試就是為了找問題

SMDK6410 # set serverip 172.16.1.134

SMDK6410 # tftp 0x50000000 u-boot.bin

dm9000 i/o: 0x18000000, id: 0x90000a46 

DM9000: running in 16 bit mode

MAC: 00:0c:29:4d:e4:f4

operating at 100M full duplex mode

Using dm9000 device

TFTP from server 172.16.1.134; our IP address is 172.16.1.111

Filename 'u-boot.bin'.

Load address: 0x50000000

Loading: ################

done

Bytes transferred = 228796 (37dbc hex)

SMDK6410 # nand erase 0 0x80000

NAND erase: device 0 offset 0x0, size 0x80000

Erasing at 0x0 -- 100% complete.

OK

SMDK6410 # nand write 0x50000000 0x80000

NAND write: device 0 offset 0x80000, size 0x7ff80000

Attempt to write outside the flash area

 0 bytes written: ERROR

SMDK6410 # nand write 0x50000000 0 0x80000

NAND write: device 0 offset 0x0, size 0x80000

 524288 bytes written: OK

SMDK6410 # reset

resetting ...

data abort

pc : [<e5951008>]          lr : [<000000d0>]

sp : 0c001f90  ip : 12345678     fp : 00000000

r10: 57e380ec  r9 : 57cfae38     r8 : 57cf7f64

r7 : 00000001  r6 : 1a000005     r5 : e3500000  r4 : eb006faa

r3 : 00500000  r2 : e5eff014     r1 : 00000000  r0 : 00000000

Flags: nZCv  IRQs off  FIQs off  Mode SVC_32

Resetting CPU ...

看看reset果然就挂了，程式就是用的剛剛燒寫OK的程式，看來程式沒有燒進對的地方，下面針對nand write 0x50000000 0 0x80000燒寫指令進一步跟蹤，待續