Re: [coreboot] Coreboot with a Linux kernel and initramfs as payload.

[Patrick Georgi]

Am 31.08.2012 16:41, schrieb ron minnich:
> It's been several years since I've done this. However, I don't believe
> mkelfimage is needed.
>
> You need to build a kernel image that contains the kernel, initramfs,
> and command line args. If my memory is correct, this is now possible
> with the standard kernel build process and it creates and ELF file.
> Since cbfstool can parse and ELF file, you should be able to use the
> standard coreboot flow.
> That won't work since Linux still requires the "bootblock" at 0x7d000 
> (or whereever that was). You only get that when using a "linux" loader.

Still, mkelfimage isn't exactly a well thought out tool. Take an ELF 
linux image and add the bootblock section and you avoid a copy on 
runtime and lots of complication of mkelfimage (eg. that stub it adds).
Never found the time to implement that, though.


Patrick

Coreboot with a Linux kernel and initramfs as payload.

[ron minnich]

On Fri, Aug 31, 2012 at 8:41 AM, Patrick Georgi <[e-mail]> wrote:
> That won't work since Linux still requires the "bootblock" at 0x7d000 (or
> whereever that was). You only get that when using a "linux" loader.

in linuxbios days I never used that. I jumped to the kernel at the
32-bit entry point at 100020.

ron