From 698227e6ea3aa45321ea10407462cbdf1c372e99 Mon Sep 17 00:00:00 2001 From: Kinsey Moore Date: Thu, 27 Oct 2022 16:58:01 -0500 Subject: bsps/aarch64: Ensure FPU trap state is consistent RTEMS may be booted from a dirty environment. Ensure that FPU trap settings are consistent. --- bsps/aarch64/shared/start/start.S | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'bsps/aarch64/shared/start/start.S') 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 */ -- cgit v1.2.3