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Merge "fix(cpus): workaround for Cortex-X4 erratum 2923985" into integration

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Manish Pandey 2024-12-12 22:43:22 +01:00 • committed by TrustedFirmware Code Review
commit f8872c9440
3 changed files with 13 additions and 0 deletions
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3
docs/design/cpu-specific-build-macros.rst
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@ -843,6 +843,9 @@ For Cortex-X4, the following errata build flags are defined :
- ``ERRATA_X4_2897503``: This applies errata 2897503 workaround to Cortex-X4
CPU. This needs to be enabled for revisions r0p0 and r0p1. It is fixed in r0p2.
- ``ERRATA_X4_2923985``: This applies errata 2923985 workaround to Cortex-X4
CPU. This needs to be enabled for revisions r0p0 and r0p1. It is fixed in r0p2.
- ``ERRATA_X4_3076789``: This applies errata 3076789 workaround to Cortex-X4
CPU. This needs to be enabled for revisions r0p0 and r0p1. It is fixed in r0p2.

6
lib/cpus/aarch64/cortex_x4.S
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@ -75,6 +75,12 @@ workaround_reset_end cortex_x4, ERRATUM(2897503)
check_erratum_ls cortex_x4, ERRATUM(2897503), CPU_REV(0, 1)
workaround_reset_start cortex_x4, ERRATUM(2923985), ERRATA_X4_2923985
sysreg_bit_set CORTEX_X4_CPUACTLR4_EL1, (BIT(11) | BIT(10))
workaround_reset_end cortex_x4, ERRATUM(2923985)
check_erratum_ls cortex_x4, ERRATUM(2923985), CPU_REV(0, 1)
workaround_reset_start cortex_x4, ERRATUM(3076789), ERRATA_X4_3076789
sysreg_bit_set CORTEX_X4_CPUACTLR3_EL1, BIT(14)
sysreg_bit_set CORTEX_X4_CPUACTLR3_EL1, BIT(13)

4
lib/cpus/cpu-ops.mk
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@ -843,6 +843,10 @@ CPU_FLAG_LIST += ERRATA_X4_2816013
# to revisions r0p0 and r0p1 of the Cortex-X4 cpu. It is fixed in r0p2.
CPU_FLAG_LIST += ERRATA_X4_2897503
# Flag to apply erratum 2923985 workaround on reset. This erratum applies
# to revisions r0p0 and r0p1 of the Cortex-X4 cpu. It is fixed in r0p2.
CPU_FLAG_LIST += ERRATA_X4_2923985
# Flag to apply erratum 3076789 workaround on reset. This erratum applies
# to revisions r0p0 and r0p1 of the Cortex-X4 cpu. It is fixed in r0p2.
CPU_FLAG_LIST += ERRATA_X4_3076789