New subject: GRUB2 is too big as a payload in ThinkPad X201

26 Mar 2015


      Hi,
simply fix this problems by increasing the cbfs size in menuconfig
under the chipset section.
Regards Zaolin
...
Dear Iru,
welcome to coreboot!
Am Donnerstag, den 26.03.2015, 09:33 +0800 schrieb Iru Cai:
...
I tried to use GRUB2 as a payload when building coreboot for ThinkPad X201,
but it's too big to fit into the rom. The GRUB2 coreboot image without
modules is 2.8M and >800K after compressing, it's still too big.
building GRUB directly, I get a different result.
    $ git describe
    grub-2.02-beta2-372-g5974d4b
    $ ./autogen.sh
    $ ./configure --with-platform=coreboot --enable-boot-time --enable-cache-stats
    $ make
    $ edit Makefile


Now adapt the rule `default_payload.elf`.
    default_payload.elf: grub-mkstandalone grub-mkimage
    	pkgdatadir=. ./grub-mkstandalone --grub-mkimage=./grub-mkimage -O i386-coreboot -o $@ --modules='ahci pata ehci uhci ohci usb_keyboard usbms part_msdos xfs ext2 fat at_keyboard part_gpt usbserial_usbdebug cbfs' --install-modules='ls linux search configfile normal cbtime cbls memrw iorw minicmd lsmmap lspci halt reboot hexdump pcidump regexp setpci lsacpi chain test serial multiboot cbmemc linux16 gzio echo help' --fonts= --themes= --locales= -d grub-core/ /boot/grub/grub.cfg=$(srcdir)/coreboot.cfg


Remove the modules you don’t need. With *my* ASRock E350M1 setup, I
don’t need `pata`, `usbms`, `xfs`, `fat`, `at_keyboard`, `part_gpt` and
`usbserial_usbdebug`. I then add `boottime` and `cacheinfo`.
    $ make default_payload.elf


The file is now 578K big and in CBFS the compressed size is a little
over 200 KB.
    $ build/cbfstool build/coreboot.rom print
    […]
            fallback/payload               0x5c400    payload
            205851
    […]


[…]
Thanks,
Paul
PS: I’d be great if you could just send plain text messages with no HTML
parts to mailing lists.
-- 
coreboot mailing list: coreboot@coreboot.org
http://www.coreboot.org/mailman/listinfo/coreboot

Re: [coreboot] GRUB2 is too big as a payload in ThinkPad X201