[LinuxBIOS] Complete and generic 32bit/64bit support
yinghailu at gmail.com
Thu Nov 22 04:51:34 CET 2007
On Nov 21, 2007 3:29 PM, Myles Watson <myles at pel.cs.byu.edu> wrote:
> On 11/21/07, yhlu <yinghailu at gmail.com> wrote:
> > On Nov 21, 2007 12:03 PM, Myles Watson <myles at pel.cs.byu.edu> wrote:
> > > >
> > > > On Wed, Nov 21, 2007 at 12:13:23PM -0700, Myles Watson wrote:
> > > > > It makes the same changes as mentioned before, but it also uses the
> > > > > correct kernel image depending on the architecture. mkelfimage
> > > > > doesn't work with an x86_64 vmlinux, and with an i386 bzImage it
> > > > > generates a _much_ larger elf.
> > for x86_64 support
> > there is a patch i posted several months ago.
> > because late x86_64 kernel vmlinux is elf64, you need to use melfImage
> > to convert that to elf32.
> > YH
> I tested it using the amd serengeti_cheetah LAB (64-bit) platform in buildrom
> With mkelfimage 2.5 using bzImage (vmlinux doesn't work)
> Payload takes 901210 Bytes (880 KBytes) in ROM:
> With mkelfimage 2.7 and Yinghai's patch using bzImage
> Payload takes 900919 Bytes (879 KBytes) in ROM:
> With mkelfimage 2.7 and Yinghai's patch using vmlinux
> Payload takes 770726 Bytes (752 KBytes) in ROM:
> So 2.7 is marginally better anyway, and blows 2.5 away by using vmlinux.
> I tested it and it boots. I think we should upgrade to 2.7 and use the patch.
this afternoon, played a while linuxbios + tiny kernel on l1_2pvv.
find something interesting.
vmlinux 22.214.171.124 in buildrom
A. built from on my laptop with opensuse 10.3 64bit
B. built from my workstation with Suse 10.0 pro 64bit
A is much bigger than B, Also A doesn't work mkelfImage + LinuxBIOS,
but B work with mkelfImage + LinuxBIOS
then I tried 2.6.24-rc3 from git, it works with A and B.
maybe some gcc default setting difference about stack checking cause that.
BTW, what is the kernel version in LAB now?
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