Linux下USB燒寫uImage kernel

Linux下USB燒寫uImage kernel

U-Boot 2011.06 (Mar 19 2012 - 08:45:34) for MINI6410

CPU: S3C6400@667MHz

Fclk = 667MHz, Hclk = 133MHz, Pclk = 66MHz (ASYNC Mode)

Board: MINI6410

DRAM: 256 MiB

NAND: 512 MiB

MMC: SAMSUNG SD/MMC: Host controler CH0

SD card is SD_VERSION_2

SD/MMC size : 3911680 block * 512B = 1910MB

Video: no Video params found, try bootargs~~ 640x480x24 31kHz 59Hz

[petworm] video_hw_init: <640, 480, 640, 480>

Error: Bad gzipped data

Error: no valid bmp or bmp.gz image at 57500000

In: serial

Out: serial

Err: serial

Net: dm9000

Hit any key to stop autoboot: 3

2.按任意鍵進入指令行狀态後，運作dnw指令，檔案存放位址作為參數傳入（十六進制）：

MINI6410 # dnw 50008000

Insert a OTG cable into the connector!

3.插入USB電纜，連接配接主機和開發闆，minicom會出現如下提示：

USB Cable is Connected

Now, Waiting for DNW to transmit data

4.另開一個終端，加載secbulk驅動：

sudo insmod secbulk

5.建立secbulk驅動裝置節點(通過試驗，可跳過此步)：

sudo mknod /dev/secbulk0 c 102 0

6.運作dnw程式，将欲傳送的uImage的帶路徑的檔案名作為參數傳入:

sudo ./dnw uImage_a70 #(我們選擇目前目錄下的uImage_a70檔案)

回車後傳輸開始，直至傳送完畢。Minicom端提示如下：

Download Done!! Download Address: 0x50008000, Download Filesize:0x40de8

Checksum is being calculated.

Checksum O.K.

主機端提示如下：

liwei@liwei:~/Desktop/dnw_linux/dnw$ sudo ./dnw uImage_a70

file name : uImage_a70

file size : 3763296 bytes

Writing data...

100% 3763306 bytes OK

此時，檔案傳送完畢，且校驗正确。這時我們就可以用u-boot指令來将檔案寫入相應

的nandflash位址中：

MINI6410 # nand erase 80000 400000

NAND erase: device 0 offset 0x80000, size 0x400000

Erasing at 0x460000 -- 100% complete.

OK

MINI6410 # nand write 50008000 80000 400000

NAND write: device 0 offset 0x80000, size 0x400000

4194304 bytes written: OK

7.将S2調整到NAND啟動位置，重新開機開發闆後從NandFlash讀取核心到記憶體，運作結

果如下：

U-Boot 2011.06 (Mar 16 2012 - 13:58:27) for MINI6410

No SD/MMC card detected!

No MMC card for env!

Using default environment

Video: No MMC card for background image!

Hit any key to stop autoboot: 0

MINI6410 # nand read 50008000 80000 400000

NAND read: device 0 offset 0x80000, size 0x400000

4194304 bytes read: OK

8.從記憶體中啟動核心：

MINI6410 # bootm 50008000

## Booting kernel from Legacy Image at 50008000 ...

Image Name: petworm

Data Size: 3763232 Bytes = 3.6 MiB

Load Address: 50008000

Entry Point: 50008040

Verifying Checksum ... OK

XIP Kernel Image ... OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

Initializing cgroup subsys cpu

Linux version 2.6.38-FriendlyARM (root@jensen) (gcc version 4.5.1 (ctng-1.8.1-F1

CPU: ARMv6-compatible processor [410fb766] revision 6 (ARMv7), cr=00c5387f

CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache

Machine: MINI6410

。。。 。。。

至此，Linux下用USB電纜燒寫uImage成功完成！

附：

我們可以通過使用u-boot自帶的mkimage指令來将zImage轉換為uImage檔案，指令如下：

mkimage -A arm -O linux -T kernel -C none -a 0x50008000 -e

0x50008040 -n "image-name" -d zImage_a70 uImage_a70

此指令将zImage_a70檔案轉換為uImage_a70檔案，鏡像的名稱為image-name。