Hi Zvika, On 9/25/18 10:59 PM, Zvi Vered wrote: > Thank you very much for the detail information. > The output of ifdtool in layout.txt is: > 00000000:00000fff fd > 00300000:007fffff bios > 00001000:002fffff me > > So the original bios size is 0x500000 = 5MB > > You wrote: > if the size of the original BIOS is bigger or equal than coreboot build > you are good to go ahead. > > The original "ROM chip size" in menuconfig is 2MB. Should I change it to > 8MB ?
yes, and CBFS_SIZE should be set to something <= 0x500000. > > I'm aware my board is not identical to the "Bayley Bay FSP-based CRB" > Should I use another board as reference ? You should use whatever reference is closest to your board. Major dif- ferences to look out for are: GPIO/pin config, embedded controller (it's unlikely that coreboot already has code for yours), how the RAM is con- nected (e.g. DIMMs or soldered down?). Well, and everything else in the mainboard's directory. If your board is not obviously similar to a supported board, you have a lot of work ahead of you. Nico > > Best regards, > Zvika > > > On Tue, Sep 25, 2018 at 10:16 AM Jose Trujillo <ce.au...@protonmail.com> > wrote: > >> Hello Zvika: >> >> First get the correct original full 8MB FW from the manufacturer or dump >> it from the board with the command in EFI: >> "ftp -d BYT_orig.bin" and double save it. >> >> 2.- in coreboot/util/ifdtool do make and sudo make install. >> 3.- in terminal go to the FW directory and do: "ifdtool BYT_orig.bin -f >> fw_layout.txt" >> a).- in "fw_layout.txt" you will get the BIOS area size from the >> original FW (just substract). >> b).- if the size of the original BIOS is bigger or equal than >> coreboot build you are good to go ahead. >> 4.- copy/move "BYT_orig.bin" in the directory which resides the coreboot >> folder (not inside the coreboot folder) and do: >> ifdtool -i BIOS:./coreboot/build/coreboot.rom CB_baytrail.bin >> 5.- flash it: "fpt -f CB_baytrail.bin" booting from UEFI. >> >> If the build was correctly done and followed accurately those steps the >> system should boot. >> >> Good luck, >> Jose Trujillo. >> >> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ >> On Monday, September 24, 2018 10:18 PM, Zvi Vered <vered...@gmail.com> >> wrote: >> >> Hello, >> >> I have an Intel's ATOM Bay Trail board. The output of "inteltool" is: >> >> CPU: ID 0x30679, Processor Type 0x0, Family 0x6, Model 0x37, Stepping 0x9 >> Northbridge: 8086:0f00 (Bay Trail) >> Southbridge: 8086:0f1c (Bay Trail) >> IGD: 8086:0f31 (unknown) >> >> In coreboot configuration I selected: >> Mainboard -> Mainboard model -> Bayley Bay FSP-based CRB >> The default ROM chip size is 2MB. >> This is also the size of coreboot.rom created after "make" >> >> The board has 8MB BIOS flash. >> It's delivered with a BIOS programming utility that runs under EFI shell. >> >> The original BIOS has 2 versions: rom (5MB) and bin (8MB) >> I tried to burn the 2MB coreboot.rom with the vendor's BIOS utlity. >> >> I got: >> 3 - Error: ROM file size does not match existing BIOS size. >> Should I convert coreboot.rom to coreboot.bin ? How ? >> If not, how can I program coreboot.rom ? >> >> Thank you, >> Zvika >> >> >> > > -- coreboot mailing list: coreboot@coreboot.org https://mail.coreboot.org/mailman/listinfo/coreboot
