diff options
| author | Kinsey Moore <kinsey.moore@oarcorp.com> | 2022-10-27 16:58:01 -0500 |
|---|---|---|
| committer | Joel Sherrill <joel@rtems.org> | 2022-11-09 08:14:11 -0600 |
| commit | 698227e6ea3aa45321ea10407462cbdf1c372e99 (patch) | |
| tree | daa1da77609de4a50a5f05ceb6f6fbeb2caa6713 /bsps/aarch64 | |
| parent | zynqmp: Add support for the CFC-400X (diff) | |
| download | rtems-698227e6ea3aa45321ea10407462cbdf1c372e99.tar.bz2 | |
bsps/aarch64: Ensure FPU trap state is consistent
RTEMS may be booted from a dirty environment. Ensure that FPU trap
settings are consistent.
Diffstat (limited to 'bsps/aarch64')
| -rw-r--r-- | bsps/aarch64/shared/start/start.S | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/bsps/aarch64/shared/start/start.S b/bsps/aarch64/shared/start/start.S index 8bd4f86f4e..0237583463 100644 --- a/bsps/aarch64/shared/start/start.S +++ b/bsps/aarch64/shared/start/start.S @@ -307,6 +307,12 @@ _el1_start: /* FPU does not need to be enabled on AArch64 */ + /* Ensure FPU traps are disabled by default */ + mrs x0, FPCR + bic x0, x0, #((1 << 8) | (1 << 9) | (1 << 10) | (1 << 11) | (1 << 12)) + bic x0, x0, #(1 << 15) + msr FPCR, x0 + #endif /* AARCH64_MULTILIB_VFP */ /* Branch to start hook 1 */ |