Giacomo Travaglini has submitted this change. (
https://gem5-review.googlesource.com/c/public/gem5/+/64341?usp=email )
(
1 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the
submitted one.
)Change subject: system-arm: Enable SME in the bootloader
......................................................................
system-arm: Enable SME in the bootloader
In addition to SVE (which was already being enabled by the bootloader)
we also enable SME to allow lower ELs to use it.
Jira Issue: https://gem5.atlassian.net/browse/GEM5-1289
Change-Id: I7078a80e9a857c7cf91e3c1e52fe3812fa422394
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/64341
Maintainer: Jason Lowe-Power <power...@gmail.com>
Tested-by: kokoro <noreply+kok...@google.com>
Reviewed-by: Jason Lowe-Power <power...@gmail.com>
---
M system/arm/bootloader/arm64/boot.S
1 file changed, 19 insertions(+), 0 deletions(-)
Approvals:
Jason Lowe-Power: Looks good to me, approved; Looks good to me, approved
kokoro: Regressions pass
diff --git a/system/arm/bootloader/arm64/boot.S
b/system/arm/bootloader/arm64/boot.S
index 5041561..4f26953 100644
--- a/system/arm/bootloader/arm64/boot.S
+++ b/system/arm/bootloader/arm64/boot.S
@@ -64,6 +64,7 @@
msr scr_el3, x0
mov x0, #(1 << 8) // Disable SVE trap to EL3
+ orr x0, x0, #(1 << 12) // Disable SME trap to EL3
msr cptr_el3, x0 // Disable copro. traps to EL3
/*
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I7078a80e9a857c7cf91e3c1e52fe3812fa422394
Gerrit-Change-Number: 64341
Gerrit-PatchSet: 9
Gerrit-Owner: Sascha Bischoff <sascha.bisch...@arm.com>
Gerrit-Reviewer: Andreas Sandberg <andreas.sandb...@arm.com>
Gerrit-Reviewer: Giacomo Travaglini <giacomo.travagl...@arm.com>
Gerrit-Reviewer: Jason Lowe-Power <power...@gmail.com>
Gerrit-Reviewer: kokoro <noreply+kok...@google.com>
Gerrit-MessageType: merged
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