管理提醒： 本帖被 qq2440 从 micro2440技术交流专区 移动到本区(2013-11-18)
1.直接把2440test/src/目录下的lcd.c和sunflower_240x320.c拷贝到u-boot/drivers/目录。
2. 修改 lcd.c文件：
1） 添加所需的宏定义：
#define LCD_TYPE_N35 1
#define LCD_TYPE_A70 2
#define LCD_TYPE_VGA1024x768 3
#define LCD_TYPE LCD_TYPE_A70
#define U32 unsigned int
2）从lcd.h拷贝过来以下行：
#define rGPCCON (*(volatile unsigned *)0x56000020) //Port C control
#define rGPCUP (*(volatile unsigned *)0x56000028) //Pull-up control C
#define rGPDCON (*(volatile unsigned *)0x56000030) //Port D control
#define rGPDUP (*(volatile unsigned *)0x56000038) //Pull-up control D
#define rLCDCON1 (*(volatile unsigned *)0x4d000000) //LCD control 1
#define rLCDCON2 (*(volatile unsigned *)0x4d000004) //LCD control 2
#define rLCDCON3 (*(volatile unsigned *)0x4d000008) //LCD control 3
#define rLCDCON4 (*(volatile unsigned *)0x4d00000c) //LCD control 4
#define rLCDCON5 (*(volatile unsigned *)0x4d000010) //LCD control 5
#define rLCDSADDR1 (*(volatile unsigned *)0x4d000014) //STN/TFT Frame buffer start address 1
#define rLCDSADDR2 (*(volatile unsigned *)0x4d000018) //STN/TFT Frame buffer start address 2
#define rLCDSADDR3 (*(volatile unsigned *)0x4d00001c) //STN/TFT Virtual screen address set
#define rTPAL (*(volatile unsigned *)0x4d000050) //TFT Temporary palette
#define rLCDINTMSK (*(volatile unsigned *)0x4d00005c) //LCD Interrupt mask
#define rTCONSEL (*(volatile unsigned *)0x4d000060) //LPC3600 Control --- edited by junon
#define rGPGCON (*(volatile unsigned *)0x56000060) //Port G control
#define rGPGUP (*(volatile unsigned *)0x56000068) //Pull-up control G
2）去掉其他的#include项，添加:
#include <common.h>
#include “sunflower_240x320.c”
不要使用sunflower_800x480.c，它太大了，下载时会出错。
3）删除以下行：
extern unsigned char sunflower_240x320[];
extern unsigned char sunflower_800x480[];
extern unsigned char sunflower_1024x768[];
4）从2440lib.c把LcdBkLtSet(U32 HiRatio)函数定义拷贝过来。
5) 屏蔽掉不用的函数，只保留几个函数足矣：TFT_LCD_Init()，LCD_Init()，LcdBkLtSet() ，Lcd_PowerEnable()，Lcd_EnvidOnOff()，Paint_Bmp()
3. 修改u-boot/drivers/Makefile,添加lcd.o
4.修改u-boot/include/common.h,添加一行：void TFT_LCD_Init(void);
5.修改u-boot/lib_arm/board.c,在for(;;){ main_loop ();}前添加：TFT_LCD_Init();
5. 编译，下载u-boot.bin到板子运行：
Supervivi> load ram 0x33000000 0x20000 x
Ready for downloading using xmodem...
Waiting...
Downl
oaded file at 0x33000000, size = 249984 bytes
Supervivi> go 0x33000000
go to 0x33000000
argument 0 = 0x00000000
argument 1 = 0x00000000
argument 2 = 0x00000000
argument 3 = 0x00000000
U-Boot 1.1.6 (May 6 2009 - 16:42:15)
DRAM: 64 MB
Flash: 512 kB
Nand initialized...
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
zma2440 #
***************************BRAVO**********************************
不过这种办法不值得提倡，因为光是sunflower的图像数据就占掉u-boot.bin尺寸一半以上。
