First time poster, so take it easy on me :)
This is a great project -- I was able to get a kvm+coreboot+SeaBIOS environment going pretty easily. I started with the master branch of coreboot and went from there.
I am having a problem trying to load a Linux kernel+initramfs payload from SeaBIOS.
I can successfully boot the same kernel+initramfs straight from coreboot (without SeaBIOS) as a payload. Also I can boot the same kernel+initramfs from the hard disk using SeaBIOS when GRUB is installed on the hard disk. So I'm pretty sure my kernel+initramfs is OK.
My rom looks like this:
coreboot.rom: 16384 kB, bootblocksize 1416, romsize 16777216, offset 0x0 alignment: 64 bytes
Name Offset Type Size cmos_layout.bin 0x0 cmos_layout 1160 fallback/romstage 0x4c0 stage 19569 fallback/ramstage 0x5180 stage 55849 config 0x12c00 raw 3132 fallback/payload 0x13880 payload 57928 vgaroms/sgabios.bin 0x21b00 raw 4096 etc/boot-menu-wait 0x22b40 raw 8 etc/boot-menu-key 0x22b80 raw 8 etc/boot-menu-message 0x22bc0 raw 34 etc/screen-and-debug 0x22c40 raw 8 img/LINUX 0x22c80 payload 8474826 (empty) 0x837d80 null 8158360
When I break into SeaBIOS during the boot I get this menu:
Select boot device:
1. DVD/CD [ata1-0: QEMU DVD-ROM ATAPI-4 DVD/CD] 2. Virtio disk PCI:0:4 3. Legacy option rom 4. iPXE (PCI 00:03.0) 5. Payload [LINUX]
When I select "5" I get this:
Searching bootorder for: HALT drive 0x000f4d50: PCHS=16383/16/63 translation=lba LCHS=1024/255/63 s=33554432 Running option rom at cc80:0003 Booting from CBFS... Run img/LINUX Calling addr 0x00040000 ... [System Reboots]
I turned on some debug in coreboot and SeaBIOS and compared the successful boot (coreboot+Linux) to the unsuccessful boot (coreboot+SeaBIOS+Linux). I compared the segment offsets and sizes between the two cases and they were the same. Also the 0x00040000 entry point was the same.
I am mostly stuck now. Is this even a supported boot option? I'm new to SeaBIOS, so any help is much appreciated.
Thanks again for a great project -- I had pretty smooth sailing up to this point.