On Tue, Feb 4, 2014 at 9:26 AM, Carmelo Ingrao <[email protected]> wrote: > > Le 4 févr. 2014 à 16:22, Aaron Durbin <[email protected]> a écrit : > >> On Tue, Feb 4, 2014 at 9:12 AM, Carmelo Ingrao <[email protected]> wrote: >>> Hi Aaron, first thanks to take the time to answer :) >>> >>> Le 4 févr. 2014 à 16:03, Aaron Durbin <[email protected]> a écrit : >>>> >>>> SeaBIOS was loading correctly until you changed the GBB flags, right? >>>> And CTRL+L is just not being detected any longer? Can you change the >>>> GBB flags back and determine if the legacy booting still works? >>> >>> Yes, before doing mess with the gbb flags, the SeaBIOS was correctly >>> working : I have once installed Fedora on my c720 >>> Now CTRL+L is no longer detected (only a sound out the speakers) >>> >>> Yes I can change the GBB flags, but which one do I have to set ? >> >> I was thinking changing them back to 0x00, but it sounds like you >> installed Fedora over ChromeOS? And it was working until you changed >> the gbb flags? > > First, I had ChromeOS > Then I installed Fedora > Then I reinstall ChromeOS (no more Fedora), and at this moment I played with > GBB flags.
Got it. It's clearer now. > >> >>> >>> >>>>> >>>>> I have read online it may be caused by the wipe of SeaBIOS part in the >>>>> ROM. >>>> >>>> It's possible. Since you are in dev mode, could you run the following? >>>> ' iotools mmio_dump 0xffc00000 0x200000 -b | hexdump -C' It will dump >>>> the contents of legacy portion of the flash. We'd know for certain if >>>> the area is wiped. >>> >>> >>> I have copy/paste your command, and here is what I obtain : >>> >>> localhost / # iotools mmio_dump 0xffc00000 0x200000 -b | hexdump -C >>> bash: iotools: command not found >> >> Sorry. I thought you were booting ChromeOS in dev mode (I'm just used >> to using iotools). Try this: >> >> dd iflag=sync if=/dev/mem bs=2M skip=2046 count=1 | hexdump -C > > Yes I have right now ChromeOS in dev mode but it can’t find the iotools (when > I start the laptop it says « press space to enable security) > > Here the output : > > localhost / # dd iflag=sync if=/dev/mem bs=2M skip=2046 count=1 | hexdump -C > 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > 1+0 records in > 1+0 records out > 2097152 bytes (2.1 MB) copied, 1.30793 s, 1.6 MB/s > 00200000 > It definitely is gone, but I am not sure why. I would use the script Kevin posted in http://permalink.gmane.org/gmane.comp.bios.coreboot.seabios/7572 to build a new SeaBIOS and flash it to the RW_LEGACY in the SPI. The script looks to be well documented and straight forward. -Aaron -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
