Messages in this thread | | | Date | Tue, 24 Jul 2007 17:55:43 -0700 | From | "Yinghai Lu" <> | Subject | Re: Patches for REALLY TINY 386 kernels |
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On 7/24/07, Adrian Bunk <bunk@stusta.de> wrote: > On Tue, Jul 24, 2007 at 01:50:35PM -0700, Yinghai Lu wrote: > > On 7/24/07, Helge Hafting <helge.hafting@aitel.hist.no> wrote: > >> Andi Kleen wrote: > >> >> Some people are putting Linux kernels in the "BIOS" (i.e. ROM chip) > >> when > >> >> using LinuxBIOS (www.linuxbios.org). It _does_ make a lot of difference > >> >> there how big the kernel is. At the moment you can't do that with > >> >> anything smaller than a 1 MB chip. But if people could use 512 KB chips > >> >> because the kernel is small enough that would sure be a great thing. > >> >> > >> > > >> > I'm sure it would be possibel to save a lot of text size. But I don't > >> > think removing the relatively small CPUID code is the right way. > >> > That is just a big maintenance issue for little gain. > >> > > >> Well - anyone compiling linux for BIOS usage is targetting > >> a single machine. So an ability to target a single machine is useful, > >> i.e. run the CPUID at compile-time, put the answer in a constant/macro, > >> let the optimizer prune the alternatives. :-) > > > > we are using AMD64 + LinuxBIOS + Kernel (without acpi) + kexec to load > > final kernel. > > So we can use drivers in kernel for any media (SCSI, SATA, IB,...), > > not like EFI need every driver re-porting. and We could use KVM in > > kernel to load other OS if needed. > > > > The problem is Kernel is getting bigger and bigger. and old Tiny > > kernel is stopping at 2.6.18... > >... > > Please send: > - the .config for the last kernel small enough > - your size limit > - your gcc version > and I'll look at this.
http://www.linuxbios.org/Tyan_S2892_Build_Tutorial http://www.linuxbios.org/pipermail/linuxbios/2006-October/016558.html
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