Hello Seabios!
I started the thread from qemu-list and Laszlo suggested me to post the
question here.
In Seabios, the call-path of calling vgarom entry point is the following:
handle_post() [src/post.c]
make_bios_writable() [src/fw/shadow.c]
make_bios_writable_intel()
__make_bios_writable_intel() -- shadows vgabios in C segment too
dopost() [src/post.c]
maininit()
vgarom_setup() [src/optionroms.c]
init_pcirom()
init_optionrom()
callrom()
__callrom()
_rom_header_entry [vgasrc/vgaentry.S]
vga_post() [vgasrc/vgainit.c]
For me, it looks like seabios (bios.bin) calls a function, vga_post, that is
supposed be
in vgabios.bin. It makes me thinking that vgabios.bin is somehow embedded in
bios.bin.
But, in my case I use both bios.bin and vgabios.bin to booting up my guest OS
(I'm using qemu).
Apparently, I'm not clearly understanding the difference between vgabios inside
bios.bin
and vgabios-stdvga.bin. Could you tell me the difference?
And, I'm trying to debug a vgabios.bin by examining with qemu+gdb. Especially,
I'm trying to
set the break-point to the entry point of vgabios.bin and I'm not quite sure
how to do this
since I don't know the address where vgabios.bin is loaded. I would appreciate
if you give me
some hint about this.
Best regards,
Jaeyong
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