Call for Testing: UEFI Changes

[Toomas Soome]

> On 22 Mar 2018, at 12:13, Jakob Alvermark <jakob at alvermark.net> wrote:
> 
> Hi!
> 
> 
> Just updated to r331345.
> 
> Two problems:
> 
> 1. boot/efi.4th is added to /usr/src/ObsoleteFiles.inc but still included in loader.rc. Loader fails to load it and subsequently fails to load modules. Reinstalling efi.4th problem 2 appears.
> 
> 
> 2. Fixing problem 1 and adding efirt_load="YES" to /boot/loader.conf makes the kernel panic instantly. Photo of panic: https://photos.app.goo.gl/ph3yQukOAUdQpsvK2
> 
> 
> Jakob

The efi.4th was introduced and later removed by Warner, a bit too hastily perhaps… but perhaps it is better to note the partial revert of the removal or something like that:)

rgds,
toomas


> 
> 
> On 03/22/18 01:45, Kyle Evans wrote:
>> Hello!
>> 
>> A number of changes have gone in recently pertaining to UEFI booting
>> and UEFI runtime services. The changes with the most damaging
>> potential are:
>> 
>> We now put UEFI runtime services into virtual address mode, fixing
>> runtime services with U-Boot/UEFI as well as the firmware
>> implementation in many Lenovos. The previously observed behavior was a
>> kernel panic upon invocation of efibootmgr/efivar, or a kernel panic
>> just loading efirt.ko or compiling EFIRT into the kernel.
>> 
>> Graphics mode selection is now done differently to avoid regression
>> caused by r327058 while still achieving the same effect. The observed
>> regression was that the kernel would usually end up drawing
>> incorrectly at the old resolution on a subset of the screen, due to
>> incorrect framebuffer information.
>> 
>> Explicit testing of these changes, the latest of which happened in
>> r331326, and any feedback from this testing would be greatly
>> appreciated. Testing should be done with either `options EFIRT` in
>> your kernel config or efirt.ko loaded along with updated bootloader
>> bits.
>> 
>> I otherwise plan to MFC commits involved with the above-mentioned
>> changes by sometime in the first week of April, likely no earlier than
>> two (2) weeks from now on April 4th.
>> 
>> Thanks,
>> 
>> Kyle Evans
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