On 10 September 2014 15:00, Jean-Sébastien Pédron <dumbb...@freebsd.org> wrote:
> Hello!
>
> I tried the following FreeBSD snapshot on my Clevo W860CU with UEFI
> enabled:
> FreeBSD-11.0-CURRENT-amd64-20140903-r270990-memstick.img
Thanks for trying it out.
> The boot fails early with the following error:
> panic: BIOS smap did not include a basemem segment!
This panic means the memory map does not include usable memory (for
the kernel) with physaddr 0.
if (physmap[i] == 0x00000000) {
basemem = physmap[i + 1] / 1024;
basemem == 0 produces the panic.
The requirement for a usable memory range with physaddr 0 doesn't hold
for UEFI, and the md startup hasn't yet been reworked to accommodate
that.
> Here's a video of a verbose boot (the quality is really low, I can try
> to redo it if this one doesn't help):
> http://www.dumbbell.fr/~dumbbell/FreeBSD-Clevo-W860CU-UEFI-no-basemem-segment.mov
Pausing the video immediately after the kernel starts confirms this:
the UEFI firmware has RuntimeServicesData at physaddr 0, so not
available for kernel use.
Do you mind submitting a PR to keep track of this issue?
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