Author: GWD Time: 2019.7.4
First, the course content:
1 Q: Recovery factory settings?
A:
1), using op / eop u-boot to programming nor / nand, set to start NOR / NAND
2), immediately after the power on the serial input space bar to make the board into the core rather than starting on UBOOT board
3 ), usb device connection port PC ----------- development board; mounting a drive
4), to download the kernel: UBOOT serial input menu K
. 5), using uImage file transmission dnw_100ask.exe
6) , the uboot will automatically receive files uImage programmer
7), the download file system: y in UBOOT serial input menu
8), using the transmission fs_qtopia.yaffs2 dnw_100ask.exe file
9), uboot will automatically receive programming root file system
10), q to quit UBOOT serial input menu, execute the command to delete the partition parameters: the NAND the ERASE params
11), reboot (for QT file system, you will be asked than the standard touch-screen for the first reboot)
(if not allowed to touch, you can after the systems start in the serial execution: rm / etc / pointercal then restart calibrated again)
2. Q: Why Writing uboot eop with op /?
A: After the board to bricks can be used only eop.
3. Note: restore factory settings flowchart
1), programmed to uboot NOR;
2), the USB programming kernel files, Kernel;
3), programming files yaffs
Note: Enter rm / etc / pointercal (delete pointer calculation file), restart the application after re-calibrate the screen
Second, the learning points (no)
Third, the code (no)