Re: eboot.c regression allows boot, from v3.7 on- no boot with UEFI, only legacy, bisect results

From: Matt Fleming
Date: Thu Apr 03 2014 - 17:04:05 EST


(Adding linux-efi and correct Matthew's address)

On Fri, 28 Mar, at 04:08:36PM, Daniel McLellan wrote:
> System: Hewlett-Packard product: HP EliteBook 2570p
> CPU~Dual core Intel Core i7-3520M CPU (-HT-MCP-)
> Kernel: 3.12.4-2-hplove x86_64 (64 bit) Desktop: Enlightenment 0.18.99.18202
> Distro: Arch Linux
>
>
> I believe this issue is common to only a few iterations of ivy bridge
>
> https://bbs.archlinux.org/viewtopic.php?id=156670
> https://bugs.archlinux.org/task/33745?project=1
>
> I had been patching eboot.c to v3.7 with the attached
> efi_hp_boot.patch, but due to the recent changes in eboot.c (in v3.13)
> I decided to bisect, and identified the following:
>
> # first bad commit: [dd5fc854de5fd37adfcef8a366cd21a55aa01d3d] EFI:
> Stash ROMs if they're not in the PCI BAR
>
> My next step is diffing the eboot.c from v3.13.
>
> or would a better path be to check for ivy bridge?

Daniel, could you try booting a recent kernel, without your patch
applied and with the earlyprintk=efi,keep kernel parameter.

Meanwhile I'm going to try and reproduce this error.

--
Matt Fleming, Intel Open Source Technology Center
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