So the cmap is fill at 0x0 and lot’s of essential data like device tree too (at 0x100) is overwritten. The panel_info.cmap is not allocated and have a NULL value. If you want use the Splash screen of bitmap display in bootmap, there is a bug in the video driver. Hi a little (headache) contributed from me:
#Raspberry pi sudo apt get update network unreachable driver
One of the replies written in this thread suggests that raspberry pi’s default address configuration is messed up in a way that the display driver will corrupt other critical memory regions whenever it will try to show something up on the display. raspberry display related address is messed up In order to this to work properly, one must also turn on other ‘CONFIG_’s as well.Ģ. One must manually add ‘CONFIG_CMD_BMP’ configuration.įurther digging suggested that enabling ‘CONFIG_CMD_BMP’ alone is not enough. However, this command is not included in the default uboot. Apparently, this is the command that will display a bmp image file to the display. I think there are two problems that I should tackleįrom various uboot splashscreen tutorials, most of them utilize a ‘bmp’ command. The failure with displaying a picture on the display with uboot seems to be a complicated matter.
wanted to display some picture or whatever with uboot.succeeded adding a very simple custom command in uboot.Made some changes in the ‘config.txt’ file in /boot partition of the rpi sd card so that I can access the uboot prompt through UART communication. confirmed that the vanilla build works well with rpi2.fortunately, rpi2 build works very well.some setting with the compilers seems to be off. tried to build a uboot image for rpi3.
0 kommentar(er)
