Re: Some questions about GRUB

["Vladimir 'φ-coder/phcoder' Serbinenko" <phcoder@gmail.com>]

On 25.07.2013 16:43, Stojsavljevic, Zoran wrote:
> Dobrii denj/Hello Vladimir,
>
> Your advices definitely move me forward, but I was not able still to boot to grub. The good thing, I see that postcodes changed. It was hanging to 0x00F8, now it is hanging at 0x00EE! Definitely, some progress.
>
> I changed my /etc/default/grub file to the following:
> GRUB_SERIAL_COMMAND="serial --unit=0 --speed=115200"
> GRUB_TERMINAL_INPUT="usb_keyboard"
> GRUB_TERMINAL_OUTPUT="serial vga_text"
>
> I use grub_2.00 from tarball I found on grub.org . I tried to adopt your lengthy command, and here is what I have got:
>
> pkgdatadir=. ./grub-mkstandalone --grub-mkimage=./grub-mkimage -O i386-coreboot -o ~/projects/payload.elf --modules='ahci ehci usbms part_msdos ext2 fat at_keyboard part_gpt'
>
> It does not recognize modules: usbserial, usbdebug and cbfs
> It does not recognize command: --install-modules='...
> It does not recognize commands: --fonts= --themes= --locales
>
> It built for me payload.elf appr. 1.7M size. Good sign. I guess, it is misconfiguration which keeps me off the guard.
>
You need latest trunk to get some important coreboot-related stuff.
http://bzr.savannah.gnu.org/lh/grub/trunk/grub/changes

> Do you have your command used/implemented maybe for latest grub (version 2.17??)? How I can get the latest released tarball (I see only 2.00). Can I use git clone command from your repo to clone latest grub source code snapshot?
>
> Commands from http://www.gnu.org/software/grub/grub-download.html I do not understand, and they don't work for me.
>
> Thank you,
> Zoran
> _______
> Most of The Time you should be "intel inside" to be capable to think "out of the box".
>
>
> -----Original Message-----
> From: grub-devel-bounces+zoran.stojsavljevic=intel.com@gnu.org [mailto:grub-devel-bounces+zoran.stojsavljevic=intel.com@gnu.org] On Behalf Of Vladimir 'f-coder/phcoder' Serbinenko
> Sent: Wednesday, July 24, 2013 6:21 PM
> To: The development of GNU GRUB
> Subject: Re: Some questions about GRUB
>
> On 24.07.2013 15:56, Stojsavljevic, Zoran wrote:
>> Spasibo/Thank you, Andrey,
>>
>> I understand. I am not able to set VGA mode somehow on Coreboot. I got the file core.elf after doing grub-install command (in /boot/grub/i386-coreboot/ directory), so I am using this file as a payload to Coreboot (have no idea if this is the correct approach)!?
>>
> You shouldn't use grub-install with coreboot. Here is my command:
> pkgdatadir=. ./grub-mkstandalone --grub-mkimage=./grub-mkimage -O i386-coreboot -o ~/x201coreboot/coreboot/payload.elf --modules='ahci ehci usbms part_msdos ext2 fat at_keyboard part_gpt usbserial_usbdebug cbfs' --install-modules='ls linux search configfile normal cbtime cbls memrw iorw minicmd lsmmap lspci halt reboot hexdump pcidump setpci lsacpi boottime chain' --fonts= --themes= --locales= -d grub-core/ boot/grub/grub.cfg
>
> To be run from your compile directory. You may need ohci/uhci modules, pata or appropriate filesystems.
>> What I have on my /etc/default/grub file is the following:
>> GRUB_SERIAL_COMMAND="serial --unit=0 --speed=115200"
>> GRUB_TERMINAL_INPUT="console serial"
>> GRUB_TERMINAL_OUTPUT="console serial vga_text"
>>
> There is no "console" on coreboot. Only vga_text for output and at_keyboard/usb_keyboard for input. Most likely you don't have appropriate modules in core.img for your install (I'm not sure it adds *hci/pata modules on coreboot the way it should)
>> Still not able to bring it to grub> prompt... Neither on serial
>> console. :(
>>
>> I have yet another question to all of you: Have anybody of you tried booting Win7 or Win8 using Coreboot or U-Boot?
>
> You need to use either SeaBIOS or EFI for this. I launch seabios from GRUB. In my GRUB menu I have a choice between loading Linux or FreeBSD directly or go through SeaBIOS which allows i.a. go to windows (7 or 8 would both work this way).
> I have also other entries like OFW but their usefulness is limited.
>
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