On 6/2/21 8:53 PM, Jason Thorpe wrote:
Changes to make secondary CPU start-up work on NetBSD, which depends
on some specific behavior in the architecture specification:
- Change the internal swppal() function to take the new VPTPTR and
Procedure Value as explicit arguments. Adapt do_start() to the
new the new swppal() signature.
- In do_start_wait(), extract the new VPTPTR and PV from the relevant
HWRPB fields, which will have been initialized by the OS, and pass
them to swppal().
- In the SWPPAL PAL call, get the value to stuff into PV (r27) from
a4 (r20), and add a comment describing why this implementation detail
is allowed by the architecture specification.
Signed-off-by: Jason Thorpe<thor...@me.com>
---
init.c | 25 ++++++++++++++++---------
pal.S | 13 ++++++++++---
2 files changed, 26 insertions(+), 12 deletions(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
r~
