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5 Commits

Author SHA1 Message Date
Andrew Turner
6ed982a221 Add support for the fpu_kern(9) KPI on arm64. It hooks into the existing 
VFP code to store the old context, with lazy loading of the new context
when needed.

FPU_KERN_NOCTX is missing as this is unused in the crypto code this has
been tested with, and I am unsure on the requirements of the UEFI
Runtime Services.

Reviewed by:	kib
Obtained from:	ABT Systeems Ltd
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D8276
 2016-10-20 09:22:10 +00:00
Andrew Turner
d88a17dd8f Fix the build, struct vfpstate needs to be visible to userspace as it's 
part of struct pcb which is in a header used in libutil.

Obtained from:	ABT Systems Ltd
Sponsored by:	The FreeBSD Foundation
 2016-10-15 16:29:06 +00:00
Andrew Turner
8ff003011d Rework how we store the VFP registers in the pcb. This will be used when 
creating a floating-point context within the kernel without having to move
the stored values in memory.

Sponsored by:	The FreeBSD Foundation
 2016-10-14 15:53:48 +00:00
Andrew Turner
f692e32555 Pass the pcb to store the vfp state in to vfp_save_state. This fixes a bug 
in savectx where it will be used to store the current state however will
pass in a pcb when vfp_save_state expected a thread pointer.

Obtained from:	ABT Systems Ltd
Sponsored by:	The FreeBSD Foundation
 2015-08-03 11:05:02 +00:00
Andrew Turner
e5acd89c78 Bring in the start of the arm64 kernel. 
This is only the minimum set of files needed to boot in qemu. As such it is
missing a few things.

The bus_dma code is currently only stub functions with a full implementation
from the development tree to follow.

The gic driver has been copied as the interrupt framework is different. It
is expected the two drivers will be merged by the arm intrng project,
however this will need to be imported into the tree and support for arm64
would need to be added.

This includes code developed by myself, SemiHalf, Ed Maste, and Robin
Randhawa from ARM. This has been funded by the FreeBSD Foundation, with
early development by myself in my spare time with assistance from Robin.

Differential Revision:	https://reviews.freebsd.org/D2199
Reviewed by:	emaste, imp
Relnotes:	yes
Sponsored by:	The FreeBSD Foundation
 2015-04-13 14:43:10 +00:00