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

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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[]={ ... };

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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.****

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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

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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 */

...