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fix: pass SMCCCv1.3 SVE hint to internal flags

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This change fixes the initial support for SMCCCv1.3 SVE hint bit [1].
In the aarch64 smc handler, the FID[16] bit is improperly extracted
and results in the corresponding flags bit to be always set.
Fix by doing the proper masking and set into the flags register.

[1] https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/17511

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I62b8e211d48a50f28e184ff27cd718f51d8d56bf
This commit is contained in:
Olivier Deprez 2023-05-24 17:42:00 +02:00
parent bf1e58e737
commit b2d851785f
1 changed files with 2 additions and 1 deletions
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3
bl31/aarch64/runtime_exceptions.S
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@ -519,7 +519,8 @@ sync_handler64:
* flags using the appropriate helper.
*/
2:
bfi x7, x0, #FUNCID_SVE_HINT_SHIFT, #FUNCID_SVE_HINT_MASK
and x16, x0, #(FUNCID_SVE_HINT_MASK << FUNCID_SVE_HINT_SHIFT)
orr x7, x7, x16
bic x0, x0, #(FUNCID_SVE_HINT_MASK << FUNCID_SVE_HINT_SHIFT)
/* Get the unique owning entity number */