On July 11, 2015 10:34:08 AM CDT, QIAO YANG <yangqiao0...@me.com> wrote: >I've finally found out that if we don't use u-boot to load the image, >and just use the bare metal to load the kernel binary, it works well. >Anyway I can't tell the reason .
The boot monitor is doing some initialization you need to override. You are depending on something being in the default state after a reset. So you are missing a piece of initialization. Review Uboot in the area you are having problems in and see if you spot a register being touched that you missed. >On Jul 07, 2015, at 07:55 PM, QIAO YANG <yangqiao0...@me.com> wrote: > > >Hi all mentors and rpi bap student developers , > > >First of all, I’ve written a blog to explicite how I to use the mailbox >interfaces, and I would like to invite other students to try it out. If >anyone need the mailbox related functions that I didn’t implement, you >can ask me for them. > > >https://yangqiao.wordpress.com/2015/07/05/rtems-board-support-packages-raspberry-pi-mailbox-and-framebuffer-implementation/ > > > > >As Pavel Pisa reported to me that he didn’t managed to get the video >console to display, I would like to invite you to try it out and report >the status to me. The setup of memory table might need to update, I’ve >explained in the last paragraph of the blog. It’s just a quick test and >the feedback will help me a lot. Thanks everyone in advance :). > >Here is a blog about how to setup the graphic console, where is the >code source and which version to test: > >https://yangqiao.wordpress.com/2015/07/05/rtems-bsp-raspberry-pi-graphic-text-console-with-frame-buffer/ > > >I've got the graphic output work with my rpi B and samsung 27" display. >But I've found something wired that in serial console mode, my serial >console stoped early: > > >The word Corporation isn't event displayed completely. > >While in graphic console mode, the output stopped at : > > >It bothers me and I'm trying to figure out the bug. But for the moment >I've got no idea and how to debug it. >But anyway the display should work and display something. > >Since I can’t test it with different display by my self. I would be >glad if you can join me to test the driver and send me feedback, so >that I can improve it . > >Thank you in advance! > > >_______________________________________________ >devel mailing list >devel@rtems.org >http://lists.rtems.org/mailman/listinfo/devel --joel _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
