Re: RFC: initramfs-tools support for early firmware loading
On Tue, 23 Apr 2013, Julien Cristau wrote:
> On Mon, Apr 22, 2013 at 19:23:50 -0300, Henrique de Moraes Holschuh wrote:
> > As of Linux kernel 3.9, support for supplying early firmware data to the
> > kernel has been added. Currently, it is used for early microcode updates
> > for Intel processors, and ACPI table overrides.
> >
> > This is a very important feature, that we should support as soon as
> > practical. ACPI table overrides can massage less-than-stellar firmware into
> > something usable, and early CPU microcode update are the only way (other
> > than a BIOS upgrade) to avoid certain CPU defects.
> >
> > To supply early firmware data to the kernel, we have to *prepend* an
> > uncompressed cpio archive to the initramfs image. The initramfs image
> > itself can be compressed as usual.
> >
> > Currently, initramfs-tools has undocumented support for appending data to
> > the initramfs image. This is now useless. We need to enhance
> > initramfs-tools to support adding arbritary files to a cpio archive that
> > needs to be prepended to the initramfs image.
> >
> Seems a bit odd that you're sending a mail about initramfs-tools to two
> mailing lists, none of which are the initramfs-tools maintainer? (Hint:
> that would be initramfs-tools@packages.debian.org, aka
> debian-kernel@lists.debian.org)
Meh, my bad.
I will repost there, and drop debian-boot.
Thanks!
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
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