from userpsace. Previously we could have triggered a panic by trying to
jump to a kernel address from userland as the trap handling code thought we
received an ast in kernel mode.
Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
information on what the core supports. In most cases these will be
identical across most CPUs in the SoC, however there may be the case where,
with a big.LITTLE setup they may differ. In this case we print the
decoded data on all CPUs.
Reviewed by: kib
Sponsored by: ABT Systems Ltd
Differential Revision: https://reviews.freebsd.org/D4725
Currently FreeBSD supports only single PIC controller. Some systems
that have more than one (like ThunderX dual-socket) fails to boot.
Disable other PICes until proper handling is implemented in the
generic interrupt code.
Reviewed by: imp
Obtained from: Semihalf
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3682
Introduce supprot for SMP to GICv3 and ITS drivers.
Obtained from: Semihalf
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3299
Use Vritual Counter register associated with Generic Timer to
read the cyclecount.
Obtained from: Semihalf
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3134
Add a method to identify CPU based on RAW MIDR value.
Obtained from: Semihalf
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3117
This commit reworks the code responsible for identification of
the CPUs during runtime.
It is necessary to provide a way for workarounds and erratums
to be applied only for certain HW versions.
The copy of MIDR is now stored in pcpu to provide a fast and
convenient way for assambly code to read it (pcpu is used quite often
so there is a chance it's inside the cache).
The MIDR is also better way of identification than using user-friendly
cpu_desc structure, because it can be compiled into comparision of
single u32 with only one access to the memory - this is crucial
for some erratums which are called from performance-critical
places.
Changes in cpu_identify makes this function safe to be called
on non-boot CPUs.
New function CPU_MATCH was implemented which returns boolean
value based on mathing masked MIDR with chip identification.
Example of usage:
printf("is thunder: %d\n", CPU_MATCH(CPU_IMPL_MASK | CPU_PART_MASK,
CPU_IMPL_CAVIUM, CPU_PART_THUNDER, 0, 0));
printf("is generic: %d\n", CPU_MATCH(CPU_IMPL_MASK | CPU_PART_MASK,
CPU_IMPL_ARM, CPU_PART_FOUNDATION, 0, 0));
Reviewed by: andrew
Obtained from: Semihalf
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D3030
