U-Boot-( 可修改的 ) The hardware dependent configuration and supported hardware model

=============================

SPI Flash support list 在這裡看到可支援的spi flash 型號

Location:

$U-boot_DIR/ include/ spi_type.h

Define:

spi_info[]={ ... };

=============================

U-Boot version (see at booting message) 可以修改開機訊息顯示的版本別

Location:

$U-Boot_DIR/ lib_$ARCH/ board.c

Define:

const char version_string[] = $VERSION;

show message:

U-Boot 1.3.0 (Jan 20 2011 - 09:06:50)

****checksum is effected.****

=============================

U-Boot TEXT_BASE

FILE Location:

$U-Boot_DIR/ board/ $VENDOR/ $BOARD/config.mk

Code:

# RAM version

TEXT_BASE = 0xa000000

u-boot 存放在memory的位置

=============================

U-Boot Hardware dep. Setting Declare.

***宣告要包 哪種 Hardware的設定值

File Location:

$U-Boot_DIR/ include/config.h

Code:

#include _ configs/$BOARD.h _

***硬體相關名稱 ( mk檔多會用到，(if)define亦是 )

File Location:

$U-Boot_DIR/ include/config.mk

Code:

ARCH = $ARCH

CPU = $CPU

BOARD = $BOARD

VENDOR = $VENDOR

***define HW 週邊設定、宣告，時脈、I2C、SPI、bootargs、USB‧‧‧等

File Location:

$U-Boot_DIR/ include/ configs/ $BOARD.h

Code: (部分代碼)

...

#define CONFIG_BAUDRATE 115200

...

#define CONFIG_LOADADDR 0xa0000000 /* default load address */

...

Andriod - adb

<< Source Code >>

**** system/core/adb/adb.c Line: 921

<< target side >>

$> stop adbd

$> set service.adb.tcp.port 5032

$> start adbd

ps.

可將上面三行加入init.rc 執行adbd 之前，就可透過 tcp/ip 傳輸

<< host side >>

$> adb kill-server // 確保連接成功

$> adb connect $TARGET_IP: // 透過tcp/ip 連到android

$> adb devices // 確認連上的設備

$> adb shell $CMD

之後進入另一提示字元，輸入 su即以root權限工作

$> adb disconnect $TARGET_IP:$PORT_NUM // 斷開連接

ps.

adb shell 之後提示字元為

"#" 表示是以 root權限 ;

"$" 表示是以shell權限

reference http://developer.android.com/guide/developing/tools/adb.html

Eclipse - Android Emulator invoke Error

[ ISSUE ] 出現以下錯誤訊息，導致模擬器不能執行:

[2011-08-23 15:01:22 - Emulator] invalid command-line parameter: Files\Android\android-sdk\tools/emulator-arm.exe.

[2011-08-23 15:01:22 - Emulator] Hint: use '@foo' to launch a virtual device named 'foo'.

[2011-08-23 15:01:22 - Emulator] please use -help for more information

[ 2 Solutions ]

1. 安裝 android SDK 到 沒有空格的目錄 (ex: C:\Android)

原本 assign 的路徑為 C:\PROGRAM FILES\Android\android-sdk

^ 因為空格(space) 導致設定錯誤

2. 在Eclipse 下重新設置路徑

Window > Preference >　Android > SDK Location

變成新的路徑 C:\PROGRA~1\Android\android-sdk

[ Reference ] http://code.google.com/p/android/issues/detail?id=18285

JAVA - j2se 5.0

jdk-5.0 / jre 1.5.0-u22 / size: 53.2MB

http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-javase5-419410.html#jdk-1.5.0_22-oth-CHT

memo it

linux - Seagate SpinDown Aware

取消隨身硬碟進入睡眠模式不能喚醒問題，將這行指令上去就可以了

echo 1 > /sys/class/scsi_disk/$scsi_disk/allow_restart

資料來源

http://www.nslu2-linux.org/wiki/FAQ/SpinDownUSBHarddisks

http://zhigang.org/blog/seagate-freeagent-auto-spindown-under-linux/

linux - tr, ^M deletion

去除 行尾的 ^M 字元

cmd> cat $(old_filename) | tr -d '\r' > $(new_filename)

linux - diff

不加入比對的目錄

$> diff -x 'exclude directory' directoryA directoryB

不加入比對的檔案

$> diff -X 'exclude file' directoryA directoryB

linux - diff and patch kernel

以內核(kernel)為例：


--test
|
kernel-new \ (directory)
|
kernel-old \ (directory)
|
patch-update (patched-file)

製作patch file，如果有兩個kernel目錄，一個較新一個較舊，利用diff指令比較差異後再重導向某一檔案

#diff -Nru kernel-old kernel-new > patch-update

--test
|
kernel-new \
|
patch-update

使用patch file，拿到patch file後update到目錄裡

#> cd kernel-old

update

#> patch -p1 < patch-update

或

#> cat patch-update | patch -p1

( --dry-run is good param. if not sure -pX value is )

patch file是壓縮檔或是打包形式

#> bzcat patch-update.bz2 | patch -p1

或

#> zcat patch-update.gz | patch -p1

恢復patch前

#> patch -p1 -R < patch-update

linux - u-boot ( 1st boot msg.)

u-boot 初次開機，出現訊息

*** Warning - bad CRC, using default environment

未初始化環境變數，設定環境變數後即可 ( ex: set macaddr ff:ff:ff:ff:ff:ff )

*** Warning - bad CRC, using default environment

linux - grep, find

找出所有 檔名為readme 且 內含字串 "help"

#> grep help $(find . -name readme)