diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst index 5230cdcb5..fda43dc99 100644 --- a/docs/design/cpu-specific-build-macros.rst +++ b/docs/design/cpu-specific-build-macros.rst @@ -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_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. + For Cortex-A510, the following errata build flags are defined : - ``ERRATA_A510_1922240``: This applies errata 1922240 workaround to diff --git a/include/lib/cpus/aarch64/cortex_x4.h b/include/lib/cpus/aarch64/cortex_x4.h index b16170c85..f701216b1 100644 --- a/include/lib/cpus/aarch64/cortex_x4.h +++ b/include/lib/cpus/aarch64/cortex_x4.h @@ -26,6 +26,7 @@ /******************************************************************************* * CPU Auxiliary control register specific definitions ******************************************************************************/ +#define CORTEX_X4_CPUACTLR_EL1 S3_0_C15_C1_0 #define CORTEX_X4_CPUACTLR3_EL1 S3_0_C15_C1_2 #define CORTEX_X4_CPUACTLR4_EL1 S3_0_C15_C1_3 diff --git a/lib/cpus/aarch64/cortex_x4.S b/lib/cpus/aarch64/cortex_x4.S index 75b276677..8820de50b 100644 --- a/lib/cpus/aarch64/cortex_x4.S +++ b/lib/cpus/aarch64/cortex_x4.S @@ -75,6 +75,14 @@ workaround_reset_end cortex_x4, ERRATUM(2897503) check_erratum_ls cortex_x4, ERRATUM(2897503), 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) + sysreg_bit_set CORTEX_X4_CPUACTLR_EL1, BIT(52) +workaround_reset_end cortex_x4, ERRATUM(3076789) + +check_erratum_ls cortex_x4, ERRATUM(3076789), CPU_REV(0, 1) + workaround_reset_start cortex_x4, CVE(2022, 23960), WORKAROUND_CVE_2022_23960 #if IMAGE_BL31 /* diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk index 2cbbdd265..4c207850d 100644 --- a/lib/cpus/cpu-ops.mk +++ b/lib/cpus/cpu-ops.mk @@ -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 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 + # Flag to apply erratum 1922240 workaround during reset. This erratum applies # to revision r0p0 of the Cortex-A510 cpu and is fixed in r0p1. CPU_FLAG_LIST += ERRATA_A510_1922240