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fix(cpus): update the fix for Cortex-A78AE erratum 1941500

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This patch fixes the mitigation for erratum 1941500 for the
Cortex-A78AE CPUs. The right fix is to set the bit 8, whereas
the current code clears it.

Reported-by: matthias.rosenfelder@nio.io
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: Ib7c3fddd567eeae6204756377e0f77a573c0a911
This commit is contained in:
Varun Wadekar 2023-09-20 15:13:16 +00:00
parent cd83a766d5
commit 67a2ad171d
1 changed files with 2 additions and 2 deletions
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4
lib/cpus/aarch64/cortex_a78_ae.S
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@ -1,6 +1,6 @@
/*
* Copyright (c) 2019-2023, Arm Limited. All rights reserved.
* Copyright (c) 2021-2022, NVIDIA Corporation. All rights reserved.
* Copyright (c) 2021-2023, NVIDIA Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -23,7 +23,7 @@
#endif /* WORKAROUND_CVE_2022_23960 */
workaround_reset_start cortex_a78_ae, ERRATUM(1941500), ERRATA_A78_AE_1941500
sysreg_bit_clear CORTEX_A78_AE_CPUECTLR_EL1, CORTEX_A78_AE_CPUECTLR_EL1_BIT_8
sysreg_bit_set CORTEX_A78_AE_CPUECTLR_EL1, CORTEX_A78_AE_CPUECTLR_EL1_BIT_8
workaround_reset_end cortex_a78_ae, ERRATUM(1941500)
check_erratum_ls cortex_a78_ae, ERRATUM(1941500), CPU_REV(0, 1)