Re: Fwd: Re: [coreboot] About grub.cfg——Buil ding coreboot with grub2 payload

[Vladimir 'φ-coder/phcoder' Serbinenko]

On 01.06.2011 03:51, Rock Cui wrote:
> Thank you for your help, I have changed my operation, but my coreboot
>
> still step to grub.
>
> /************************************* LOG
> *********************************************************/
> Check fallback/payload
> Got a payload
> Loading segment from rom address 0xfff29ff8
>   data (compression=1)
>   New segment dstaddr 0x8200 memsize 0xd8b8 srcaddr 0xfff2a04c filesize
> 0x3a69
>   (cleaned up) New segment addr 0x8200 size 0xd8b8 offset 0xfff2a04c
> filesize 0x3a69
> Loading segment from rom address 0xfff2a014
>   data (compression=1)
>   New segment dstaddr 0x15ab8 memsize 0x69914 srcaddr 0xfff2dab5
> filesize 0x1d0c0
>   (cleaned up) New segment addr 0x15ab8 size 0x69914 offset 0xfff2dab5
> filesize 0x1d0c0
> Loading segment from rom address 0xfff2a030
>   Entry Point 0x00008200
> Loading Segment: addr: 0x0000000000008200 memsz: 0x000000000000d8b8
> filesz: 0x0000000000003a69
> lb: [0x0000000000100000, 0x0000000000164000)
> Post relocation: addr: 0x0000000000008200 memsz: 0x000000000000d8b8
> filesz: 0x0000000000003a69
> using LZMA
> [ 0x00008200, 0000e51b, 0x00015ab8)<- fff2a04c
> Clearing Segment: addr: 0x000000000000e51b memsz: 0x000000000000759d
> dest 00008200, end 00015ab8, bouncebuffer 7fe28000
> Loading Segment: addr: 0x0000000000015ab8 memsz: 0x0000000000069914
> filesz: 0x000000000001d0c0
> lb: [0x0000000000100000, 0x0000000000164000)
> Post relocation: addr: 0x0000000000015ab8 memsz: 0x0000000000069914
> filesz: 0x000000000001d0c0
> using LZMA
> [ 0x00015ab8, 0007f3cc, 0x0007f3cc)<- fff2dab5
> dest 00015ab8, end 0007f3cc, bouncebuffer 7fe28000
> Loaded segments
> Jumping to boot code at 8200
> entry    = 0x00008200
> lb_start = 0x00100000
> lb_size  = 0x00064000
> adjust   = 0x7fd8c000
> buffer   = 0x7fe28000
>      elf_boot_notes = 0x0011622c
> adjusted_boot_notes = 0x7fea222c
>
> /****************************************************************************************************/
>
> I have added "grub_printf("Enter grub_main()!\n")" in the top of
> grub_main()(defined in grub-core/kern/main.c). Unfortunately, nothing
> can be printed out when booting. I don't know it is stopped before grub
> C code or I don't open some grub2 option which close the standard output
> mode.
This is guaranteed not to work. You try printing before console is inited.
>
>>  2011/5/31 Cui Lei<address@hidden>:
>>>  I am working hard at building coreboot with grub2 payload. Now  I
>>> can build
>>>  a grub2 payload as follow:
>>>  1: Download the lastest grub2 source code.
>>>  2: ./autogen.sh
>>>       ./configure --with-platform=coreboot
>>>        make
>>>  3: Use grub-mkimage to generate a "payload.elf", detail:
>>>       ./grub-mkimage -d . -O i386-coreboot -o
>>> ../coreboot-v4/payload.elf
>>>  --prefix='/boot/grub2'
>>>         memdisk cpio -m ../memdisk.tar
>>>
>>>       Accoding the coreboot
>>> website(http://www.coreboot.org/Talk:GRUB2),
>>>  memdisk is a virtual disk
>>>       in grub image and it is suggested that grub.cfg is contained in a
>>>  memdisk image. So I made
>>>       folders boot/grub2 in my work folder and add a new grub.cfg
>>> and some
>>>  modules(such as
>>>       memdisk.mod cpio.mod ...) into the boot/grub2, then tar
>>> boot/grub2 to
>>>  memdisk.tar(according
>>>       to the website tar can be used to build a memdisk image).
>>>
>>>  Problems:
>>>       1: I don't know wether grub2 can found my grub.cfg ,if I set  "
>>>  --prefix='/boot/grub2' " ?
>>>           On the coreboot website,a sample is 
>>> --prefix='(ata0)/boot/grub2'. I
>>>  think the ata0 is hard disk.
>>>           but I use the memdisk image, what should I do ?
>>>
>>  I use this to create a custom grub2 efi app with memdisk embedded -
>>
>>  /bin/grub-mkimage --directory=/usr/lib/grub/x86_64-efi
>>  --memdisk="${memdisk_64_img}" --prefix='(memdisk)/efi/grub2'
>>  --format=x86_64-efi --compression=xz
>>  --output="${grub2_efi_mp}/efi/boot/bootx64.efi" ${GRUB2_MODULES}
>>
>>  Hope this helps.
>>
>>>       2: I want my grub.cfg in memdisk to load the grub.cfg from my
>>> hard disk.
>>>  Because I have install the
>>>           ubuntu11.04 on my hard disk, a grub.cfg file should be in the
>>>  /boot/grub. So my grub.cfg just like
>>>           this:
>>>                   search -f -s /boot/grub/grub.cfg
>>>                   configfile /boot/grub/grub.cfg
>>>
>>>           Is this practicable?
>>>
>>  Make it
>>
>>    search --file --no-floppy --set=root /boot/grub/grub.cfg
>>    configfile (${root})/boot/grub/grub.cfg
>>
>>>       3: I want the gurb can boot into the grub-shell, how to ?
>>>
>>  I can't understand the question. You want grub to boot into
>>  grub-shell? Don't create a ${prefix}/grub.cfg file.
>>
>>>  BRs,
>>>
>>>  Rock.C
>>>
>>  Regards.
>>
>>  Keshav
>>
>
>
>


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko

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