Date: Wed, 6 Jun 2012 04:40:38 +0900 From: Takuya ASADA <syuu@dokukino.com> To: soc-status@freebsd.org, Peter Grehan <grehan@freebsd.org> Subject: [status report #2] BHyVe BIOS emulation to boot legacy systems Message-ID: <CALG4x-WXExng8yqd9AUzYAvaCsjEv=4EWxBG%2Bdv_CmCiLMQJZQ@mail.gmail.com>
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* project summary
The project goal is to support BIOS emulation on BHyVe, enabling boot
from disk image.
I going to focus booting FreeBSD/amd64 from disk image on this GSoC,
but final goal is to make BHyVe able to support more guest OSes.
* Implement sample pseudo-BIOS
Implemented sample pseudo-BIOS witch call VMCALL at BIOS entry address.
Implement "bhyvebiosloader" will next step for week 3.
[Makefile]
all:
cc -m32 -c pseudobios.S -o pseudobios.o
ld -melf_i386_fbsd -T ldscript.lds pseudobios.o -o pseudobios.elf
objcopy -I elf32-i386-freebsd -O binary pseudobios.elf pseudobios.bin
clean:
rm *.o *.elf *.bin
[ldscript.lds]
OUTPUT_FORMAT("elf32-i386")
OUTPUT_ARCH("i386")
SECTIONS
{
.text 0xffff0 :
{
*(.text)
*(.rodata)
} = 0
.data :
{
*(.data)
}
.sbss :
{
*(.sbss)
*(.scommon)
}
.bss :
{
*(.bss)
*(COMMON)
}
}
[pseudobios.S]
.code16gcc
vmcall
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