Anthony Ross wrote:
]Hello Coreboot Folks,
]
]Well Thanks for the suggestions. It seems that DUET boots but now a major problem has ]cropped up. It freezes at the main
DUET-BIOS page not allowing to perform any further ]operations, like booting a HDD image or fingering around the EFI BIOS options.
Similarly ]If I had the .lzma to the cbfs file name I face the same problem like earlier so having ]it as myfloppy.img makes it take
effect.
]
]
]Any further Ideas about these problems.....
]
]
]Regards..
]
]
]Neo
For your freeze problem, how are you debugging? The usual way
is to enable and capture debug messages written to a serial
port. I believe the standard Duet settings make it write
debugging messages to a serial port at 3F8 (115200,8,N,1).
Because halt for assert is enabled by default on Duet, an
assert is the most likely reason for a freeze. The assert
will log details to the serial port.
If your hardware doesn't have a serial port, you can use
an emulator such as simnow or qemu. A good thing about
Duet is that it is generic and in theory can run on
different systems without porting. If I remember correctly,
the current Duet project can boot to the UEFI shell and
menu system on AMD simnow using the Solo board model.
I am working on a project to allow Duet to run as a
coreboot payload, and to fix the major Duet problems.
It will also continue to support bootable image form.
It may take me a few weeks to reach the goal of booting
operating systems in UEFI mode on real hardware though.
Thanks,
Scott
On Sat, Oct 26, 2013 at 8:01 PM, Kevin O'Connor <kevin(a)koconnor.net> wrote:
On Thu, Oct 24, 2013 at 12:17:33AM -0500, Scott Duplichan wrote:
> Scott Duplichan wrote:
>
> <..snip..>
>
> ]I have no experience with making SeaBIOS boot an embedded floppy
> ]image. I may be able to give this a try, but I would have to first overcome
> ]Windows build problems that have crept into both SeaBIOS and coreboot.
>
> I tested the SeaBIOS virtual floppy boot with EDK2 Duet and it worked
> for me. I tested with the ASRock e350M1 project. Here is the cbfstool
> output:
Thanks for confirming.
> scott@p67-2600k /D/coreboot/win-build-env-011/coreboot/build
> $ cbfstool.exe coreboot.rom print
> coreboot.rom: zd kB, bootblocksize 4096, romsize 1008, offset 0x400000
> alignment: 0 bytes
>
> Name Offset Type Size
> cmos_layout.bin 0x0 cmos_layout 1776
> pci1002,9802.rom 0x740 optionrom 57856
> fallback/romstage 0xe980 stage 345432
> fallback/coreboot_ram 0x62f40 stage 203312
> fallback/payload 0x949c0 payload 53738
> config 0xa1c00 raw 3831
> (empty) 0xa2b40 null 3526744
>
> scott@p67-2600k /D/coreboot/win-build-env-011/coreboot/build
> $ cbfstool.exe coreboot.rom add -f /d/duetfloppy.img -n floppyimg/duetfloppy.img -t raw
FYI, it's also possible to add an lzma compressed image (make sure the
cbfs filename ends in ".lzma" then).
-Kevin