>>Could you please reference the solution for future users with the same problem? Sure. Infect I should have detailed it without asking. Sorry for that.
Solution can be referenced to following thread in coreboot mailing list that provide details of memory mapping on the board answered by Adrian https://www.coreboot.org/pipermail/coreboot/2017-March/083681.html On Fri, Mar 24, 2017 at 10:49 PM, Vladimir 'phcoder' Serbinenko < phco...@gmail.com> wrote: > > > On Fri, Mar 24, 2017, 10:17 Gailu Singh <gail...@gmail.com> wrote: > >> It was indeed the ROM mapping issue. solved now. Thank you so much Andrei. >> > Could you please reference the solution for future users with the same > problem? > >> >> On Fri, Mar 17, 2017 at 7:29 PM, Gailu Singh <gail...@gmail.com> wrote: >> >> >>Any chance ROM is mapped somewhere else in your case? >> I need to check, this may be a case. >> >> On Fri, Mar 17, 2017 at 7:16 PM, Andrei Borzenkov <arvidj...@gmail.com> >> wrote: >> >> On Fri, Mar 17, 2017 at 4:24 PM, Gailu Singh <gail...@gmail.com> wrote: >> > @Vladimir >> > I do not have serial console (board has memory mapped uart not support >> in >> > grub) to capture memory details. Also on graphics console I can not give >> > commands from usb keyboard to dump memory because USB port on board >> are 3.0 >> > and USB 3.0 is not supported in Grub. Any other thing I could try? >> > >> > @Andrei >> > What is the expected address supposed to be printed for successful >> > identification of CBFS. >> > >> >> GRUB reads 4 bytes at offset 0xffffffc0. All ones likely means that >> this address simply is not valid. >> >> According to https://github.com/mrnuke/coreboot/blob/master/ >> documentation/cbfs.txt, >> "A pointer to the location of the header will be located at offset -4 >> from the end of the ROM. This translates to address 0xFFFFFFFC on a >> normal x86 system." Any chance ROM is mapped somewhere else in your >> case? >> >> > I am building coreboot image myself and stitching with other intel >> firmware >> > as documented by Intel. >> > >> > On Fri, Mar 17, 2017 at 12:45 PM, Vladimir 'phcoder' Serbinenko >> > <phco...@gmail.com> wrote: >> >> >> >> >> >> >> >> On Thu, Mar 16, 2017, 22:30 Gailu Singh <gail...@gmail.com> wrote: >> >>> >> >>> Please find coreboot image attached. Zipped it to reduce size >> >> >> >> This image is actually fine and is read correctly by fstest. Apparently >> >> for some reason reading image at the end of 4GiB doesn't work. Can you >> try >> >> dumping last 8M before 4G mark from /dev/mem ? >> >>> >> >>> >> >>> On Fri, Mar 17, 2017 at 1:19 AM, Vladimir 'phcoder' Serbinenko >> >>> <phco...@gmail.com> wrote: >> >>>> >> >>>> >> >>>> >> >>>> On Thu, Mar 16, 2017, 12:43 Gailu Singh <gail...@gmail.com> wrote: >> >>>>> >> >>>>> >>Try insmod cbfs >> >>>>> >> >>>>> >> >>>>> Trieed, it does not help. BTW cbfs is already included in my grub >> elf >> >>>>> image so I don't think I need to do insmod. >> >>>>> >> >>>>> ./grub-mkstandalone --grub-mkimage=./grub-mkimage -O i386-coreboot >> -o >> >>>>> default_payload.elf --modules='ls ahci pata ehci uhci ohci >> usb_keyboard >> >>>>> usbms part_msdos ext2 fat at_keyboard part_gpt usbserial_usbdebug >> cbfs' >> >>>>> --install-modules='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 syslinuxcfg xnu >> affs afs >> >>>>> bfs btrfs cbfs cpio cpio_be exfat ext2 fat hfs hfsplus iso9660 jfs >> minix >> >>>>> minix2 minix2_be minix3 minix3_be minix_be newc nilfs2 ntfs odc >> procfs >> >>>>> reiserfs romfs sfs squash4 tar udf ufs1 ufs1_be ufs2 xfs zfs >> password_pbkdf2 >> >>>>> ' --fonts= --themes= --locales= -d grub-core/ >> >>>>> /boot/grub/grub.cfg=./coreboot.cfg >> >>>>> >> >>>>> This must be something else. AFAIK memdisk itself resides in CBFS, >> >>>>> Strangely ls comman shows memdisk but not cbfsdisk >> >>>> >> >>>> Please share your coreboot image. >> >>>>> >> >>>>> >> >>>>> >> >>>>> On Fri, Mar 17, 2017 at 12:52 AM, Vladimir 'phcoder' Serbinenko >> >>>>> <phco...@gmail.com> wrote: >> >>>>>> >> >>>>>> >> >>>>>> >> >>>>>> On Thu, Mar 16, 2017, 12:18 Gailu Singh <gail...@gmail.com> wrote: >> >>>>>>> >> >>>>>>> Hi Experts, >> >>>>>>> >> >>>>>>> I am using grub2 with coreboot and configured with >> >>>>>>> --with-platform=coreboot. >> >>>>>>> >> >>>>>>> I am able to load grub2 from coreboot. However when I run ls >> command, >> >>>>>>> I do not see cbfsdisk. ls only shows >> >>>>>>> >> >>>>>>> (memdisk) (ahci0) (ahci0,msdos1) (ahci0,msdos2) >> >>>>>>> >> >>>>>>> I have added file in the cbfs as follows and need to access it but >> >>>>>>> when I try (cbfsdisk)/myfile I get error disk 'cbfsdisk' not >> found. >> >>>>>>> >> >>>>>>> build/util/cbfstool/cbfstool build/coreboot.rom add -f myfile -n >> >>>>>>> myfile -t raw >> >>>>>>> >> >>>>>>> Any idea how to access myfile on cbfsdisk? >> >>>>>> >> >>>>>> Try insmod cbfs >> >>>>>>> >> >>>>>>> >> >>>>>>> Thanks. >> >>>>>>> _______________________________________________ >> >>>>>>> Grub-devel mailing list >> >>>>>>> Grub-devel@gnu.org >> >>>>>>> https://lists.gnu.org/mailman/listinfo/grub-devel >> >>>>>> >> >>>>>> >> >>>>>> _______________________________________________ >> >>>>>> Grub-devel mailing list >> >>>>>> Grub-devel@gnu.org >> >>>>>> https://lists.gnu.org/mailman/listinfo/grub-devel >> >>>>>> >> >>>>> >> >>>>> _______________________________________________ >> >>>>> Grub-devel mailing list >> >>>>> Grub-devel@gnu.org >> >>>>> https://lists.gnu.org/mailman/listinfo/grub-devel >> >>>> >> >>>> >> >>>> _______________________________________________ >> >>>> Grub-devel mailing list >> >>>> Grub-devel@gnu.org >> >>>> https://lists.gnu.org/mailman/listinfo/grub-devel >> >>>> >> >>> >> >>> _______________________________________________ >> >>> Grub-devel mailing list >> >>> Grub-devel@gnu.org >> >>> https://lists.gnu.org/mailman/listinfo/grub-devel >> >> >> >> >> >> _______________________________________________ >> >> Grub-devel mailing list >> >> Grub-devel@gnu.org >> >> https://lists.gnu.org/mailman/listinfo/grub-devel >> >> >> > >> > >> > _______________________________________________ >> > Grub-devel mailing list >> > Grub-devel@gnu.org >> > https://lists.gnu.org/mailman/listinfo/grub-devel >> > >> >> _______________________________________________ >> Grub-devel mailing list >> Grub-devel@gnu.org >> https://lists.gnu.org/mailman/listinfo/grub-devel >> >> >> >> _______________________________________________ >> Grub-devel mailing list >> Grub-devel@gnu.org >> https://lists.gnu.org/mailman/listinfo/grub-devel >> > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > https://lists.gnu.org/mailman/listinfo/grub-devel > >
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