[coreboot] x60 : trying to boot to a debian in less than 2 seconds
info at gluglug.org.uk
Tue Aug 26 00:26:06 CEST 2014
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On 25/08/14 04:25, Charles Devereaux wrote:
> I'm still trying to improve boot time.
> After some further optimizations (previous results : 2.2s for the
> kernel, 0.6s for the daemons), I believe it should be possible to
> get a command line in less than 2 seconds, since most of the time
> is spend re-initializing the video chip (almost a full second)
> while there are some features to prevent just that.
> It seems that coreboot is spending some time initializing the video
> chip for grub, then linux spends some time again - even when grub
> option "set gfxpayload=keep" is set (which should prevent that) and
> when coreboot is compiled with CONFIG_FRAMEBUFFER_KEEP_VESA_MODE
> in kernel 3.10.45 : [ 0.291014] [drm] GMBUS [i915 gmbus panel]
> timed out, falling back to bit ban ging on pin 3 [ 0.321926]
> [drm] initialized overlay support [ 0.384013] [drm] GMBUS [i915
> gmbus vga] timed out, falling back to bit bangi ng on pin 2 [
> 0.570068] fbcon: inteldrmfb (fb0) is primary device [ 1.230010]
> Console: switching to colour frame buffer device 128x48 [
> 1.258981] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [
> 1.258984] i915 0000:00:02.0: registered panic notifier [
> 1.258992] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0
> on minor 0
> I'm currently trying a recent kernel since some i915 patches have
> been backported (cf
> introducing the i915.fastboot option to do just that, but it does
> not help.
> I must be doing something terribly wrong, but I just don't realize
> what exactly.
> Has anyone succeeded in keeping the vesa mode?
Do you get those same errors in 3.10.45 when booting factory bios or
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