EEPW论坛

虽然一直在学习ARM9，但是很多问题还是没明白，希望大家多多指点。

1，开发板从nor flash  启动，在串口界面上接着就会出现如下内容，请问这段程序是bootloader还是u-boot?

两者经常弄混了。

 EmbedSky BIOS for SKY2440/TQ2440 #####
Press Space key to Download Mode !

#####    Boot for Nor Flash Main Menu   #####
#####     EmbedSky USB download mode     #####

[1] Download u-boot or STEPLDR.nb1 or other bootloader to Nand Flash
[2] Download Eboot (eboot.nb0) to Nand Flash
[3] Download Linux Kernel (zImage.bin) to Nand Flash
[5] Download CRAMFS image to Nand Flash
[6] Download YAFFS image (root.bin) to Nand Flash
[7] Download Program (uCOS-II or TQ2440_Test) to SDRAM and Run it
[8] Boot the system
[9] Format the Nand Flash
[0] Set the boot parameters
[a] Download User Program (eg: uCOS-II or TQ2440_Test)
[b] Download LOGO Picture (.bin) to Nand  Flash
[l] Set LCD Parameters
[n] Enter TFTP download mode menu
[o] Download u-boot to Nor Flash
[r] Reboot u-boot
[t] Test Linux Image (zImage)
[q] quit from menu
Enter your selection:

2,以测试摄像头的实验为例，如果修改完屏幕的分辨率，利用上面的USB下载模式下载到开发板中是不是屏幕的分辨率就可以得到改善了？还是说linux的内核也需要修改？

希望各位老师帮帮忙，谢谢了！