Merge changes from topic "srm/Errata_ABI_El3" into integration

* changes:
  docs(errata_abi): document the errata abi changes
  feat(fvp): enable errata management interface
  fix(cpus): workaround platforms non-arm interconnect
  refactor(errata_abi): factor in non-arm interconnect
  feat(errata_abi): errata management firmware interface

17 files changed, 891 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 2870a46ef..e5063deb0 100644
--- a/Makefile
+++ b/Makefile
@@ -1177,6 +1177,8 @@ $(eval $(call assert_booleans,\
         SIMICS_BUILD \
         FEATURE_DETECTION \
 	TRNG_SUPPORT \
+	ERRATA_ABI_SUPPORT \
+	ERRATA_NON_ARM_INTERCONNECT \
 	CONDITIONAL_CMO \
 )))
 
@@ -1309,6 +1311,8 @@ $(eval $(call add_defines,\
         TRUSTED_BOARD_BOOT \
         CRYPTO_SUPPORT \
         TRNG_SUPPORT \
+        ERRATA_ABI_SUPPORT \
+	ERRATA_NON_ARM_INTERCONNECT \
         USE_COHERENT_MEM \
         USE_DEBUGFS \
         ARM_IO_IN_DTB \
diff --git a/bl31/bl31.mk b/bl31/bl31.mk
index b16b4e79b..d7c9a521d 100644
--- a/bl31/bl31.mk
+++ b/bl31/bl31.mk
@@ -91,6 +91,10 @@ ifneq (${ENABLE_SPE_FOR_NS},0)
 BL31_SOURCES		+=	lib/extensions/spe/spe.c
 endif
 
+ifeq (${ERRATA_ABI_SUPPORT},1)
+BL31_SOURCES		+=	services/std_svc/errata_abi/errata_abi_main.c
+endif
+
 ifneq (${ENABLE_FEAT_AMU},0)
 BL31_SOURCES		+=	${AMU_SOURCES}
 endif
diff --git a/bl32/sp_min/sp_min.mk b/bl32/sp_min/sp_min.mk
index fb0161c28..ec75d88ac 100644
--- a/bl32/sp_min/sp_min.mk
+++ b/bl32/sp_min/sp_min.mk
@@ -46,6 +46,10 @@ BL32_SOURCES		+=	services/std_svc/trng/trng_main.c	\
 				services/std_svc/trng/trng_entropy_pool.c
 endif
 
+ifeq (${ERRATA_ABI_SUPPORT}, 1)
+BL32_SOURCES		+=	services/std_svc/errata_abi/errata_abi_main.c
+endif
+
 ifneq (${ENABLE_SYS_REG_TRACE_FOR_NS},0)
 BL32_SOURCES		+=	lib/extensions/sys_reg_trace/aarch32/sys_reg_trace.c
 endif
diff --git a/changelog.yaml b/changelog.yaml
index c969b2c56..9114dadb5 100644
--- a/changelog.yaml
+++ b/changelog.yaml
@@ -662,6 +662,9 @@ subsections:
       - title: TRNG
         scope: trng
 
+      - title: ERRATA_ABI
+        scope: errata_abi
+
   - title: Libraries
 
     subsections:
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 0f1f92aea..758d62be9 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -317,6 +317,11 @@ For Cortex-A78, the following errata build flags are defined :
    CPU. This needs to be enabled for revisions r0p0, r1p0, r1p1, and r1p2, and
    it is still open.
 
+- ``ERRATA_A78_2712571``: This applies erratum 2712571 workaround to Cortex-A78
+   CPU, this erratum affects system configurations that do not use an ARM
+   interconnect IP. This needs to be enabled for revisions r0p0, r1p0, r1p1
+   and r1p2 and it is still open.
+
 -  ``ERRATA_A78_2742426``: This applies erratum 2742426 workaround to Cortex-A78
    CPU. This needs to be enabled for revisions r0p0, r1p0, r1p1 and r1p2 and
    it is still open.
@@ -347,6 +352,11 @@ For Cortex-A78 AE, the following errata build flags are defined :
   Cortex-A78 AE CPU. This needs to be enabled for revisions r0p0 and r0p1. This
   erratum is still open.
 
+- ``ERRATA_A78_AE_2712574`` : This applies erratum 2712574 workaround to
+  Cortex-A78 AE CPU. This erratum affects system configurations that do not use
+  an ARM interconnect IP. This needs to be enabled for revisions r0p0, r0p1 and
+  r0p2. This erratum is still open.
+
 For Cortex-A78C, the following errata build flags are defined :
 
 - ``ERRATA_A78C_1827430`` : This applies errata 1827430 workaround to
@@ -373,6 +383,11 @@ For Cortex-A78C, the following errata build flags are defined :
   Cortex-A78C CPU. This needs to be enabled for revisions r0p1 and r0p2. This
   erratum is still open.
 
+- ``ERRATA_A78C_2712575`` : This applies erratum 2712575 workaround to
+  Cortex-A78C CPU, this erratum affects system configurations that do not use
+  an ARM interconnect IP. This needs to be enabled for revisions r0p1 and r0p2
+  and is still open.
+
 - ``ERRATA_A78C_2772121`` : This applies errata 2772121 workaround to
   Cortex-A78C CPU. This needs to be enabled for revisions r0p0, r0p1 and r0p2.
   This erratum is still open.
@@ -488,6 +503,11 @@ For Neoverse V1, the following errata build flags are defined :
    CPU. This needs to be enabled for revisions r0p0, r1p0 and r1p1 of the CPU.
    It is still open.
 
+- ``ERRATA_V1_2701953``: This applies erratum 2701953 workaround to Neoverse-V1
+   CPU, this erratum affects system configurations that do not use an ARM
+   interconnect IP. This needs to be enabled for revisions r0p0, r1p0 and r1p1.
+   It has been fixed in r1p2.
+
 -  ``ERRATA_V1_2743093``: This applies errata 2743093 workaround to Neoverse-V1
    CPU. This needs to be enabled for revisions r0p0, r1p0, r1p1 and r1p2 of the
    CPU. It is still open.
@@ -500,6 +520,13 @@ For Neoverse V1, the following errata build flags are defined :
    CPU. This needs to be enabled for revisions r0p0, r1p0, r1p1, r1p2 of the
    CPU. It is still open.
 
+For Neoverse V2, the following errata build flags are defined :
+
+-  ``ERRATA_V2_2719103``: This applies errata 2719103 workaround to Neoverse-V2
+   CPU, this affects system configurations that do not use and ARM interconnect
+   IP. This needs to be enabled for revisions r0p0 and r0p1. It has been fixed
+   in r0p2.
+
 For Cortex-A710, the following errata build flags are defined :
 
 -  ``ERRATA_A710_1987031``: This applies errata 1987031 workaround to
@@ -558,6 +585,11 @@ For Cortex-A710, the following errata build flags are defined :
    Cortex-A710 CPU. This needs to be enabled for revisions r0p0, r1p0 and r2p0
    of the CPU and is fixed in r2p1.
 
+-  ``ERRATA_A710_2701952``: This applies erratum 2701952 workaround to Cortex-A710
+   CPU, and applies to system configurations that do not use and ARM
+   interconnect IP. This needs to be enabled for r0p0, r1p0, r2p0 and r2p1 and
+   is still open.
+
 -  ``ERRATA_A710_2768515``: This applies errata 2768515 workaround to
    Cortex-A710 CPU. This needs to be enabled for revisions r0p0, r1p0, r2p0 and
    r2p1 of the CPU and is still open.
@@ -610,6 +642,11 @@ For Neoverse N2, the following errata build flags are defined :
    CPU. This needs to be enabled for revisions r0p0, r0p1 and r0p2. It is fixed
    in r0p3.
 
+- ``ERRATA_N2_2728475``: This applies erratum 2728475 workaround to Neoverse-N2
+   CPU, this erratum affects system configurations that do not use and ARM
+   interconnect IP. This needs to be enabled for revisions r0p0, r0p1 and r0p2.
+   It is fixed in r0p3.
+
 For Cortex-X2, the following errata build flags are defined :
 
 -  ``ERRATA_X2_2002765``: This applies errata 2002765 workaround to Cortex-X2
@@ -647,6 +684,11 @@ For Cortex-X2, the following errata build flags are defined :
    CPU. This needs to be enabled for revisions r0p0, r1p0 and r2p0 of the CPU
    and is fixed in r2p1.
 
+- ``ERRATA_X2_2701952``: This applies erratum 2701952 workaround to Cortex-X2
+   CPU and affects system configurations that do not use an ARM interconnect IP.
+   This needs to be enabled for revisions r0p0, r1p0, r2p0 and r2p1 and is
+   still open.
+
 -  ``ERRATA_X2_2768515``: This applies errata 2768515 workaround to Cortex-X2
    CPU. This needs to be enabled for revisions r0p0, r1p0, r2p0 and r2p1 of the
    CPU and is still open.
@@ -709,6 +751,13 @@ For Cortex-A510, the following errata build flags are defined :
    Cortex-A510 CPU. This needs to be applied to revision r0p0, r0p1, r0p2,
    r0p3, r1p0, r1p1 and r1p2. It is fixed in r1p3.
 
+For Cortex-A715, the following errata build flags are defined :
+
+-  ``ERRATA_A715_2701951``: This applies erratum 2701951 workaround to Cortex-A715
+   CPU and affects system configurations that do not use an ARM interconnect
+   IP. This needs to be applied to revisions r0p0, r1p0 and r1p1. It is fixed
+   in r1p2.
+
 DSU Errata Workarounds
 ----------------------
 
diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index ffde0a409..6dd4ed21a 100644
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -1130,6 +1130,13 @@ Common build options
   means platform hook won't be checked and CMOs will always be performed when
   related functions are called.
 
+- ``ERRATA_ABI_SUPPORT``: Boolean option to enable support for Errata management
+  firmware interface for the BL31 image. By default its disabled (``0``).
+
+- ``ERRATA_NON_ARM_INTERCONNECT``: Boolean option to enable support for the
+  errata mitigation for platforms with a non-arm interconnect using the errata
+  ABI. By default its disabled (``0``).
+
 GICv3 driver options
 --------------------
 
diff --git a/docs/global_substitutions.txt b/docs/global_substitutions.txt
index 9428fe97d..80012e7b8 100644
--- a/docs/global_substitutions.txt
+++ b/docs/global_substitutions.txt
@@ -69,3 +69,4 @@
 .. |UEFI| replace:: :term:`UEFI`
 .. |WDOG| replace:: :term:`WDOG`
 .. |XLAT| replace:: :term:`XLAT`
+.. |ERRATA_ABI| replace:: :term:`ERRATA_ABI`
diff --git a/docs/glossary.rst b/docs/glossary.rst
index 12c6ab756..58b7d999b 100644
--- a/docs/glossary.rst
+++ b/docs/glossary.rst
@@ -70,6 +70,9 @@ You can find additional definitions in the `Arm Glossary`_.
    EHF
       Exception Handling Framework
 
+   ERRATA_ABI
+      Errata management firmware interface
+
    FCONF
       Firmware Configuration Framework
 
diff --git a/include/arch/aarch32/arch.h b/include/arch/aarch32/arch.h
index 8678bf3d8..3691497fa 100644
--- a/include/arch/aarch32/arch.h
+++ b/include/arch/aarch32/arch.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2022, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2023, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -16,8 +16,10 @@
 #define MIDR_IMPL_SHIFT		U(24)
 #define MIDR_VAR_SHIFT		U(20)
 #define MIDR_VAR_BITS		U(4)
+#define MIDR_VAR_MASK		U(0xf)
 #define MIDR_REV_SHIFT		U(0)
 #define MIDR_REV_BITS		U(4)
+#define MIDR_REV_MASK		U(0xf)
 #define MIDR_PN_MASK		U(0xfff)
 #define MIDR_PN_SHIFT		U(4)
 
diff --git a/include/services/errata_abi_svc.h b/include/services/errata_abi_svc.h
new file mode 100644
index 000000000..12500661b
--- /dev/null
+++ b/include/services/errata_abi_svc.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2023, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef ERRATA_ABI_SVC_H
+#define ERRATA_ABI_SVC_H
+
+#include <lib/smccc.h>
+
+#define ARM_EM_VERSION			U(0x840000F0)
+#define ARM_EM_FEATURES			U(0x840000F1)
+#define ARM_EM_CPU_ERRATUM_FEATURES	U(0x840000F2)
+
+/* EM version numbers */
+#define EM_VERSION_MAJOR		(0x1)
+#define EM_VERSION_MINOR		(0x0)
+
+/* EM CPU_ERRATUM_FEATURES return codes */
+#define EM_HIGHER_EL_MITIGATION		(3)
+#define EM_NOT_AFFECTED			(2)
+#define EM_AFFECTED			(1)
+#define EM_SUCCESS			(0)
+#define EM_NOT_SUPPORTED		(-1)
+#define EM_INVALID_PARAMETERS		(-2)
+#define EM_UNKNOWN_ERRATUM		(-3)
+
+#if ERRATA_ABI_SUPPORT
+bool is_errata_fid(uint32_t smc_fid);
+#else
+static inline bool is_errata_fid(uint32_t smc_fid)
+{
+	return false;
+}
+#endif /* ERRATA_ABI_SUPPORT */
+uintptr_t errata_abi_smc_handler(
+	uint32_t smc_fid,
+	u_register_t x1,
+	u_register_t x2,
+	u_register_t x3,
+	u_register_t x4,
+	void *cookie,
+	void *handle,
+	u_register_t flags
+);
+#endif /* ERRATA_ABI_SVC_H */
+
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 82a4890cf..e16c8e495 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -324,6 +324,11 @@ CPU_FLAG_LIST += ERRATA_A78_2376745
 # to revisions r0p0, r1p0, r1p1, and r1p2 of the A78 cpu. It is still open.
 CPU_FLAG_LIST += ERRATA_A78_2395406
 
+# Flag to apply erratum 2712571 workaround for non-arm interconnect ip. This
+# erratum applies to revisions r0p0, r1p0, r1p1, and r1p2 of the A78 cpu.
+# It is fixed in r1p2.
+CPU_FLAG_LIST += ERRATA_A78_2712571
+
 # Flag to apply erratum 2742426 workaround during reset. This erratum
 # applies to revisions r0p0, r1p0, r1p1 and r1p2 of the A78 cpu. It is still
 # open.
@@ -362,6 +367,11 @@ CPU_FLAG_LIST += ERRATA_A78C_1827430
 # to revision r0p0 of the A78C cpu. It is fixed in r0p1.
 CPU_FLAG_LIST += ERRATA_A78C_1827440
 
+# Flag to apply erratum 2712574 workaround for non-arm interconnect ip. This
+# erratum applies to revisions r0p0, r0p1 and r0p2 of the A78 AE cpu.
+# It is still open.
+CPU_FLAG_LIST += ERRATA_A78_AE_2712574
+
 # Flag to apply erratum 2132064 workaround during reset. This erratum applies
 # to revisions r0p1 and r0p2 of the A78C cpu. It is still open.
 CPU_FLAG_LIST += ERRATA_A78C_2132064
@@ -378,6 +388,11 @@ CPU_FLAG_LIST += ERRATA_A78C_2376749
 # to revisions r0p1 and r0p2 of the A78C cpu. It is still open.
 CPU_FLAG_LIST += ERRATA_A78C_2395411
 
+# Flag to apply erratum 2712575 workaround for non-arm interconnect ip. This
+# erratum applies to revisions r0p1 and r0p2 of the A78C cpu.
+# It is still open.
+CPU_FLAG_LIST += ERRATA_A78C_2712575
+
 # Flag to apply erratum 2772121 workaround during powerdown. This erratum
 # applies to revisions r0p0, r0p1 and r0p2 of the A78C cpu. It is still open.
 CPU_FLAG_LIST += ERRATA_A78C_2772121
@@ -509,6 +524,11 @@ CPU_FLAG_LIST += ERRATA_V1_2294912
 # to revisions r0p0, r1p0 and r1p1 of the Neoverse V1 cpu and is still open.
 CPU_FLAG_LIST += ERRATA_V1_2372203
 
+# Flag to apply erratum 2701953 workaround to non-arm interconnect ip. This
+# erratum applies to revisions r0p0, r1p0, r1p1 of the Neoverse V1 cpu,
+# it is fixed in r1p2.
+CPU_FLAG_LIST += ERRATA_V1_2701953
+
 # Flag to apply erratum 2743093 workaround during powerdown. This erratum
 # applies to revisions r0p0, r1p0, r1p1 and r1p2  of the Neoverse V1 cpu and is
 # still open.
@@ -581,6 +601,11 @@ CPU_FLAG_LIST += ERRATA_A710_2008768
 # to revision r0p0, r1p0 and r2p0 of the Cortex-A710 cpu and is fixed in r2p1.
 CPU_FLAG_LIST += ERRATA_A710_2371105
 
+# Flag to apply erratum 2701952 workaround for non-arm interconnect ip. This
+# erratum applies to revision r0p0, r1p0, r2p0, r2p1 of the Cortex-A710 cpu
+# and is still open.
+CPU_FLAG_LIST += ERRATA_A710_2701952
+
 # Flag to apply erratum 2768515 workaround during power down. This erratum
 # applies to revision r0p0, r1p0, r2p0 and r2p1 of the Cortex-A710 cpu and is
 # still open.
@@ -638,6 +663,11 @@ CPU_FLAG_LIST += ERRATA_N2_2376738
 # to revision r0p0 of the Neoverse N2 cpu, it is fixed in r0p1.
 CPU_FLAG_LIST += ERRATA_N2_2388450
 
+# Flag to apply erratum 2728475 workaround for non-arm interconnect ip. This
+# erratum applies to r0p0, r0p1, r0p2 of the Neoverse N2 cpu, it is fixed in
+# r0p3.
+CPU_FLAG_LIST += ERRATA_N2_2728475
+
 # Flag to apply erratum 2743089 workaround during during powerdown. This erratum
 # applies to all revisions <= r0p2 of the Neoverse N2 cpu, it is fixed in r0p3.
 CPU_FLAG_LIST += ERRATA_N2_2743089
@@ -682,6 +712,11 @@ CPU_FLAG_LIST += ERRATA_X2_2282622
 # to revision r0p0, r1p0 and r2p0 of the Cortex-X2 cpu and is fixed in r2p1.
 CPU_FLAG_LIST += ERRATA_X2_2371105
 
+# Flag to apply erratum 2701952 workaround for non-arm interconnect ip. This
+# erratum applies to revisions r0p0, r1p0, r2p0, r2p1 of the Cortex-x2 cpu
+# and is still open.
+CPU_FLAG_LIST += ERRATA_X2_2701952
+
 # Flag to apply erratum 2768515 workaround during power down. This erratum
 # applies to revision r0p0, r1p0, r2p0 and r2p1 of the Cortex-X2 cpu and is
 # still open.
@@ -743,6 +778,14 @@ CPU_FLAG_LIST += ERRATA_A510_2666669
 # Cortex-A510 cpu and is fixed in r1p3.
 CPU_FLAG_LIST += ERRATA_A510_2684597
 
+# Flag to apply erratum 2719103 workaround for non-arm interconnect ip. This
+# erratum applies to revisions r0p0, rop1. Fixed in r0p2.
+CPU_FLAG_LIST += ERRATA_V2_2719103
+
+# Flag to apply erratum 2701951 workaround for non-arm interconnect ip.
+# This erratum applies to revisions r0p0, r1p0, and r1p1. Its is fixed in r1p2.
+CPU_FLAG_LIST += ERRATA_A715_2701951
+
 # Flag to apply DSU erratum 798953. This erratum applies to DSUs revision r0p0.
 # Applying the workaround results in higher DSU power consumption on idle.
 CPU_FLAG_LIST += ERRATA_DSU_798953
diff --git a/make_helpers/defaults.mk b/make_helpers/defaults.mk
index e2a67f7ac..416547003 100644
--- a/make_helpers/defaults.mk
+++ b/make_helpers/defaults.mk
@@ -291,6 +291,12 @@ SDEI_SUPPORT			:= 0
 # True Random Number firmware Interface support
 TRNG_SUPPORT			:= 0
 
+# Check to see if Errata ABI is supported
+ERRATA_ABI_SUPPORT		:= 0
+
+# Check to enable Errata ABI for platforms with non-arm interconnect
+ERRATA_NON_ARM_INTERCONNECT	:= 0
+
 # SMCCC PCI support
 SMC_PCI_SUPPORT			:= 0
 
diff --git a/plat/arm/board/fvp/fvp_cpu_errata.mk b/plat/arm/board/fvp/fvp_cpu_errata.mk
new file mode 100644
index 000000000..944571dd5
--- /dev/null
+++ b/plat/arm/board/fvp/fvp_cpu_errata.mk
@@ -0,0 +1,61 @@
+#
+# Copyright (c) 2023, Arm Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+
+#/*
+# * TODO: below lines of code to be removed
+# * after abi and framework are synchronized
+# */
+
+ifeq (${ERRATA_ABI_SUPPORT}, 1)
+# enable the cpu macros for errata abi interface
+ifeq (${ARCH}, aarch64)
+ifeq (${HW_ASSISTED_COHERENCY}, 0)
+CORTEX_A35_H_INC	:= 1
+CORTEX_A53_H_INC	:= 1
+CORTEX_A57_H_INC	:= 1
+CORTEX_A72_H_INC	:= 1
+CORTEX_A73_H_INC	:= 1
+$(eval $(call add_define, CORTEX_A35_H_INC))
+$(eval $(call add_define, CORTEX_A53_H_INC))
+$(eval $(call add_define, CORTEX_A57_H_INC))
+$(eval $(call add_define, CORTEX_A72_H_INC))
+$(eval $(call add_define, CORTEX_A73_H_INC))
+else
+ifeq (${CTX_INCLUDE_AARCH32_REGS}, 0)
+CORTEX_A76_H_INC	:= 1
+CORTEX_A77_H_INC	:= 1
+CORTEX_A78_H_INC	:= 1
+NEOVERSE_N1_H_INC	:= 1
+NEOVERSE_V1_H_INC	:= 1
+CORTEX_A78_AE_H_INC	:= 1
+CORTEX_A510_H_INC	:= 1
+CORTEX_A710_H_INC	:= 1
+CORTEX_A715_H_INC 	:= 1
+CORTEX_A78C_H_INC	:= 1
+CORTEX_X2_H_INC		:= 1
+$(eval $(call add_define, CORTEX_A76_H_INC))
+$(eval $(call add_define, CORTEX_A77_H_INC))
+$(eval $(call add_define, CORTEX_A78_H_INC))
+$(eval $(call add_define, NEOVERSE_N1_H_INC))
+$(eval $(call add_define, NEOVERSE_V1_H_INC))
+$(eval $(call add_define, CORTEX_A78_AE_H_INC))
+$(eval $(call add_define, CORTEX_A510_H_INC))
+$(eval $(call add_define, CORTEX_A710_H_INC))
+$(eval $(call add_define, CORTEX_A715_H_INC))
+$(eval $(call add_define, CORTEX_A78C_H_INC))
+$(eval $(call add_define, CORTEX_X2_H_INC))
+endif
+CORTEX_A55_H_INC	:= 1
+CORTEX_A75_H_INC	:= 1
+$(eval $(call add_define, CORTEX_A55_H_INC))
+$(eval $(call add_define, CORTEX_A75_H_INC))
+endif
+else
+CORTEX_A32_H_INC	:= 1
+$(eval $(call add_define, CORTEX_A32_H_INC))
+endif
+endif
diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk
index f2df780c6..863eb0e65 100644
--- a/plat/arm/board/fvp/platform.mk
+++ b/plat/arm/board/fvp/platform.mk
@@ -524,3 +524,7 @@ ifeq (${PLATFORM_TEST_RAS_FFH}, 1)
          $(error "PLATFORM_TEST_RAS_FFH expects RAS_EXTENSION to be 1")
     endif
 endif
+
+ifeq (${ERRATA_ABI_SUPPORT}, 1)
+include plat/arm/board/fvp/fvp_cpu_errata.mk
+endif
diff --git a/services/std_svc/errata_abi/cpu_errata_info.h b/services/std_svc/errata_abi/cpu_errata_info.h
new file mode 100644
index 000000000..671a6949d
--- /dev/null
+++ b/services/std_svc/errata_abi/cpu_errata_info.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2023, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef ERRATA_CPUSPEC_H
+#define ERRATA_CPUSPEC_H
+
+#include <stdint.h>
+#include <arch_helpers.h>
+
+#if __aarch64__
+#include <cortex_a35.h>
+#include <cortex_a510.h>
+#include <cortex_a53.h>
+#include <cortex_a57.h>
+#include <cortex_a55.h>
+#include <cortex_a710.h>
+#include <cortex_a72.h>
+#include <cortex_a73.h>
+#include <cortex_a75.h>
+#include <cortex_a76.h>
+#include <cortex_a77.h>
+#include <cortex_a78.h>
+#include <cortex_a78_ae.h>
+#include <cortex_a78c.h>
+#include <cortex_makalu.h>
+#include <cortex_x1.h>
+#include <cortex_x2.h>
+#include <neoverse_n1.h>
+#include <neoverse_n2.h>
+#include <neoverse_v1.h>
+#include <neoverse_v2.h>
+#else
+#include <cortex_a15.h>
+#include <cortex_a17.h>
+#include <cortex_a57.h>
+#include <cortex_a9.h>
+#endif
+
+#define MAX_ERRATA_ENTRIES	16
+
+#define ERRATA_LIST_END		(MAX_ERRATA_ENTRIES - 1)
+
+/* Default values for unused memory in the array */
+#define UNDEF_ERRATA		{UINT_MAX, UCHAR_MAX, UCHAR_MAX, false, false}
+
+#define EXTRACT_PARTNUM(x)	((x >> MIDR_PN_SHIFT) & MIDR_PN_MASK)
+
+#define RXPX_RANGE(x, y, z)	(((x >= y) && (x <= z)) ? true : false)
+
+/*
+ * CPU specific values for errata handling
+ */
+struct em_cpu{
+	unsigned int em_errata_id;
+	unsigned char em_rxpx_lo;	/* lowest revision of errata applicable for the cpu */
+	unsigned char em_rxpx_hi;	/* highest revision of errata applicable for the cpu */
+	bool errata_enabled;		/* indicate if errata enabled */
+	/* flag to indicate if errata query is based out of non-arm interconnect */
+	bool non_arm_interconnect;
+};
+
+struct em_cpu_list{
+	/* field to hold cpu specific part number defined in midr reg */
+	unsigned long cpu_partnumber;
+	struct   em_cpu cpu_errata_list[MAX_ERRATA_ENTRIES];
+};
+
+int32_t verify_errata_implemented(uint32_t errata_id, uint32_t forward_flag);
+#endif /* ERRATA_CPUSPEC_H */
diff --git a/services/std_svc/errata_abi/errata_abi_main.c b/services/std_svc/errata_abi/errata_abi_main.c
new file mode 100644
index 000000000..bf9409d06
--- /dev/null
+++ b/services/std_svc/errata_abi/errata_abi_main.c
@@ -0,0 +1,570 @@
+/*
+ * Copyright (c) 2023, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include "cpu_errata_info.h"
+#include <lib/smccc.h>
+#include <lib/utils_def.h>
+#include <services/errata_abi_svc.h>
+#include <smccc_helpers.h>
+
+/*
+ * Global pointer that points to the specific
+ * structure based on the MIDR part number
+ */
+struct em_cpu_list *cpu_ptr;
+
+extern uint8_t cpu_get_rev_var(void);
+
+/* Structure array that holds CPU specific errata information */
+struct em_cpu_list cpu_list[] = {
+#if CORTEX_A9_H_INC
+{
+	.cpu_partnumber = CORTEX_A9_MIDR,
+	.cpu_errata_list = {
+		[0] = {794073, 0x00, 0xFF, ERRATA_A9_794073},
+		[1 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A9_H_INC */
+
+#if CORTEX_A15_H_INC
+{
+	.cpu_partnumber = CORTEX_A15_MIDR,
+	.cpu_errata_list = {
+		[0] = {816470, 0x30, 0xFF, ERRATA_A15_816470},
+		[1] = {827671, 0x30, 0xFF, ERRATA_A15_827671},
+		[2 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A15_H_INC */
+
+#if CORTEX_A17_H_INC
+{
+	.cpu_partnumber = CORTEX_A17_MIDR,
+	.cpu_errata_list = {
+		[0] = {852421, 0x00, 0x12, ERRATA_A17_852421},
+		[1] = {852423, 0x00, 0x12, ERRATA_A17_852423},
+		[2 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A17_H_INC */
+
+#if CORTEX_A35_H_INC
+{
+	.cpu_partnumber = CORTEX_A35_MIDR,
+	.cpu_errata_list = {
+		[0] = {855472, 0x00, 0x00, ERRATA_A35_855472},
+		[1 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A35_H_INC */
+
+#if CORTEX_A53_H_INC
+{
+	.cpu_partnumber = CORTEX_A53_MIDR,
+	.cpu_errata_list = {
+		[0] = {819472, 0x00, 0x01, ERRATA_A53_819472},
+		[1] = {824069, 0x00, 0x02, ERRATA_A53_824069},
+		[2] = {826319, 0x00, 0x02, ERRATA_A53_826319},
+		[3] = {827319, 0x00, 0x02, ERRATA_A53_827319},
+		[4] = {835769, 0x00, 0x04, ERRATA_A53_835769},
+		[5] = {836870, 0x00, 0x03, ERRATA_A53_836870},
+		[6] = {843419, 0x00, 0x04, ERRATA_A53_843419},
+		[7] = {855873, 0x03, 0xFF, ERRATA_A53_855873},
+		[8] = {1530924, 0x00, 0xFF, ERRATA_A53_1530924},
+		[9 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A53_H_INC */
+
+#if CORTEX_A55_H_INC
+{
+	.cpu_partnumber = CORTEX_A55_MIDR,
+	.cpu_errata_list = {
+		[0] = {768277, 0x00, 0x00, ERRATA_A55_768277},
+		[1] = {778703, 0x00, 0x00, ERRATA_A55_778703},
+		[2] = {798797, 0x00, 0x00, ERRATA_A55_798797},
+		[3] = {846532, 0x00, 0x01, ERRATA_A55_846532},
+		[4] = {903758, 0x00, 0x01, ERRATA_A55_903758},
+		[5] = {1221012, 0x00, 0x10, ERRATA_A55_1221012},
+		[6] = {1530923, 0x00, 0xFF, ERRATA_A55_1530923},
+		[7 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A55_H_INC */
+
+#if CORTEX_A57_H_INC
+{
+	.cpu_partnumber = CORTEX_A57_MIDR,
+	.cpu_errata_list = {
+		[0] = {806969, 0x00, 0x00, ERRATA_A57_806969},
+		[1] = {813419, 0x00, 0x00, ERRATA_A57_813419},
+		[2] = {813420, 0x00, 0x00, ERRATA_A57_813420},
+		[3] = {814670, 0x00, 0x00, ERRATA_A57_814670},
+		[4] = {817169, 0x00, 0x01, ERRATA_A57_817169},
+		[5] = {826974, 0x00, 0x11, ERRATA_A57_826974},
+		[6] = {826977, 0x00, 0x11, ERRATA_A57_826977},
+		[7] = {828024, 0x00, 0x11, ERRATA_A57_828024},
+		[8] = {829520, 0x00, 0x12, ERRATA_A57_829520},
+		[9] = {833471, 0x00, 0x12, ERRATA_A57_833471},
+		[10] = {859972, 0x00, 0x13, ERRATA_A57_859972},
+		[11] = {1319537, 0x00, 0xFF, ERRATA_A57_1319537},
+		[12 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A57_H_INC */
+
+#if CORTEX_A72_H_INC
+{
+	.cpu_partnumber = CORTEX_A72_MIDR,
+	.cpu_errata_list = {
+		[0] = {859971, 0x00, 0x03, ERRATA_A72_859971},
+		[1] = {1319367, 0x00, 0xFF, ERRATA_A72_1319367},
+		[2 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A72_H_INC */
+
+#if CORTEX_A73_H_INC
+{
+	.cpu_partnumber = CORTEX_A73_MIDR,
+	.cpu_errata_list = {
+		[0] = {852427, 0x00, 0x00, ERRATA_A73_852427},
+		[1] = {855423, 0x00, 0x01, ERRATA_A73_855423},
+		[2 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A73_H_INC */
+
+#if CORTEX_A75_H_INC
+{
+	.cpu_partnumber = CORTEX_A75_MIDR,
+	.cpu_errata_list = {
+		[0] = {764081, 0x00, 0x00, ERRATA_A75_764081},
+		[1] = {790748, 0x00, 0x00, ERRATA_A75_790748},
+		[2 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A75_H_INC */
+
+#if CORTEX_A76_H_INC
+{
+	.cpu_partnumber = CORTEX_A76_MIDR,
+	.cpu_errata_list = {
+		[0] = {1073348, 0x00, 0x10, ERRATA_A76_1073348},
+		[1] = {1130799, 0x00, 0x20, ERRATA_A76_1130799},
+		[2] = {1165522, 0x00, 0xFF, ERRATA_A76_1165522},
+		[3] = {1220197, 0x00, 0x20, ERRATA_A76_1220197},
+		[4] = {1257314, 0x00, 0x30, ERRATA_A76_1257314},
+		[5] = {1262606, 0x00, 0x30, ERRATA_A76_1262606},
+		[6] = {1262888, 0x00, 0x30, ERRATA_A76_1262888},
+		[7] = {1275112, 0x00, 0x30, ERRATA_A76_1275112},
+		[8] = {1791580, 0x00, 0x40, ERRATA_A76_1791580},
+		[9] = {1868343, 0x00, 0x40, ERRATA_A76_1868343},
+		[10] = {1946160, 0x30, 0x41, ERRATA_A76_1946160},
+		[11 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A76_H_INC */
+
+#if CORTEX_A77_H_INC
+{
+	.cpu_partnumber = CORTEX_A77_MIDR,
+	.cpu_errata_list = {
+		[0] = {1508412, 0x00, 0x10, ERRATA_A77_1508412},
+		[1] = {1791578, 0x00, 0x11, ERRATA_A77_1791578},
+		[2] = {1800714, 0x00, 0x11, ERRATA_A77_1800714},
+		[3] = {1925769, 0x00, 0x11, ERRATA_A77_1925769},
+		[4] = {1946167, 0x00, 0x11, ERRATA_A77_1946167},
+		[5] = {2356587, 0x00, 0x11, ERRATA_A77_2356587},
+		[6] = {2743100, 0x00, 0x11, ERRATA_A77_2743100},
+		[7 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A77_H_INC */
+
+#if CORTEX_A78_H_INC
+{
+	.cpu_partnumber = CORTEX_A78_MIDR,
+	.cpu_errata_list = {
+		[0] = {1688305, 0x00, 0x10, ERRATA_A78_1688305},
+		[1] = {1821534, 0x00, 0x10, ERRATA_A78_1821534},
+		[2] = {1941498, 0x00, 0x11, ERRATA_A78_1941498},
+		[3] = {1951500, 0x10, 0x11, ERRATA_A78_1951500},
+		[4] = {1952683, 0x00, 0x00, ERRATA_A78_1952683},
+		[5] = {2132060, 0x00, 0x12, ERRATA_A78_2132060},
+		[6] = {2242635, 0x10, 0x12, ERRATA_A78_2242635},
+		[7] = {2376745, 0x00, 0x12, ERRATA_A78_2376745},
+		[8] = {2395406, 0x00, 0x12, ERRATA_A78_2395406},
+		[9] = {2712571, 0x00, 0x12, ERRATA_A78_2712571, \
+			ERRATA_NON_ARM_INTERCONNECT},
+		[10] = {2742426, 0x00, 0x12, ERRATA_A78_2742426},
+		[11] = {2772019, 0x00, 0x12, ERRATA_A78_2772019},
+		[12] = {2779479, 0x00, 0x12, ERRATA_A78_2779479},
+		[13 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A78_H_INC */
+
+#if CORTEX_A78_AE_H_INC
+{
+	.cpu_partnumber = CORTEX_A78_AE_MIDR,
+	.cpu_errata_list = {
+		[0] = {1941500, 0x00, 0x01, ERRATA_A78_AE_1941500},
+		[1] = {1951502, 0x00, 0x01, ERRATA_A78_AE_1951502},
+		[2] = {2376748, 0x00, 0x01, ERRATA_A78_AE_2376748},
+		[3] = {2395408, 0x00, 0x01, ERRATA_A78_AE_2395408},
+		[4] = {2712574, 0x00, 0x02, ERRATA_A78_AE_2712574, \
+			ERRATA_NON_ARM_INTERCONNECT},
+		[5 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A78_AE_H_INC */
+
+#if CORTEX_A78C_H_INC
+{
+	.cpu_partnumber = CORTEX_A78C_MIDR,
+	.cpu_errata_list = {
+		[0] = {2132064, 0x01, 0x02, ERRATA_A78C_2132064},
+		[1] = {2242638, 0x01, 0x02, ERRATA_A78C_2242638},
+		[2] = {2376749, 0x01, 0x02, ERRATA_A78C_2376749},
+		[3] = {2395411, 0x01, 0x02, ERRATA_A78C_2395411},
+		[4] = {2712575, 0x01, 0x02, ERRATA_A78C_2712575, \
+			ERRATA_NON_ARM_INTERCONNECT},
+		[5] = {2772121, 0x00, 0x02, ERRATA_A78C_2772121},
+		[6] = {2779484, 0x01, 0x02, ERRATA_A78C_2779484},
+		[7 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A78C_H_INC */
+
+#if CORTEX_X1_H_INC
+{
+	.cpu_partnumber = CORTEX_X1_MIDR,
+	.cpu_errata_list = {
+		[0] = {1688305, 0x00, 0x10, ERRATA_X1_1688305},
+		[1] = {1821534, 0x00, 0x10, ERRATA_X1_1821534},
+		[2] = {1827429, 0x00, 0x10, ERRATA_X1_1827429},
+		[3 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_X1_H_INC */
+
+#if NEOVERSE_N1_H_INC
+{
+	.cpu_partnumber = NEOVERSE_N1_MIDR,
+	.cpu_errata_list = {
+		[0] = {1073348, 0x00, 0x10, ERRATA_N1_1073348},
+		[1] = {1130799, 0x00, 0x20, ERRATA_N1_1130799},
+		[2] = {1165347, 0x00, 0x20, ERRATA_N1_1165347},
+		[3] = {1207823, 0x00, 0x20, ERRATA_N1_1207823},
+		[4] = {1220197, 0x00, 0x20, ERRATA_N1_1220197},
+		[5] = {1257314, 0x00, 0x30, ERRATA_N1_1257314},
+		[6] = {1262606, 0x00, 0x30, ERRATA_N1_1262606},
+		[7] = {1262888, 0x00, 0x30, ERRATA_N1_1262888},
+		[8] = {1275112, 0x00, 0x30, ERRATA_N1_1275112},
+		[9] = {1315703, 0x00, 0x30, ERRATA_N1_1315703},
+		[10] = {1542419, 0x30, 0x40, ERRATA_N1_1542419},
+		[11] = {1868343, 0x00, 0x40, ERRATA_N1_1868343},
+		[12] = {1946160, 0x30, 0x41, ERRATA_N1_1946160},
+		[13] = {2743102, 0x00, 0x41, ERRATA_N1_2743102},
+		[14 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* NEOVERSE_N1_H_INC */
+
+#if NEOVERSE_V1_H_INC
+{
+	.cpu_partnumber = NEOVERSE_V1_MIDR,
+	.cpu_errata_list = {
+		[0] = {1618635, 0x00, 0x0F, ERRATA_V1_1618635},
+		[1] = {1774420, 0x00, 0x10, ERRATA_V1_1774420},
+		[2] = {1791573, 0x00, 0x10, ERRATA_V1_1791573},
+		[3] = {1852267, 0x00, 0x10, ERRATA_V1_1852267},
+		[4] = {1925756, 0x00, 0x11, ERRATA_V1_1925756},
+		[5] = {1940577, 0x10, 0x11, ERRATA_V1_1940577},
+		[6] = {1966096, 0x10, 0x11, ERRATA_V1_1966096},
+		[7] = {2108267, 0x00, 0x11, ERRATA_V1_2108267},
+		[8] = {2139242, 0x00, 0x11, ERRATA_V1_2139242},
+		[9] = {2216392, 0x10, 0x11, ERRATA_V1_2216392},
+		[10] = {2294912, 0x00, 0x11, ERRATA_V1_2294912},
+		[11] = {2372203, 0x00, 0x11, ERRATA_V1_2372203},
+		[12] = {2701953, 0x00, 0x11, ERRATA_V1_2701953, \
+			ERRATA_NON_ARM_INTERCONNECT},
+		[13] = {2743093, 0x00, 0x12, ERRATA_V1_2743093},
+		[14] = {2779461, 0x00, 0x12, ERRATA_V1_2779461},
+		[15 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* NEOVERSE_V1_H_INC */
+
+#if CORTEX_A710_H_INC
+{
+	.cpu_partnumber = CORTEX_A710_MIDR,
+	.cpu_errata_list = {
+		[0] = {1987031, 0x00, 0x20, ERRATA_A710_1987031},
+		[1] = {2008768, 0x00, 0x20, ERRATA_A710_2008768},
+		[2] = {2017096, 0x00, 0x20, ERRATA_A710_2017096},
+		[3] = {2055002, 0x10, 0x20, ERRATA_A710_2055002},
+		[4] = {2058056, 0x00, 0x10, ERRATA_A710_2058056},
+		[5] = {2081180, 0x00, 0x20, ERRATA_A710_2081180},
+		[6] = {2083908, 0x20, 0x20, ERRATA_A710_2083908},
+		[7] = {2136059, 0x00, 0x20, ERRATA_A710_2136059},
+		[8] = {2147715, 0x20, 0x20, ERRATA_A710_2147715},
+		[9] = {2216384, 0x00, 0x20, ERRATA_A710_2216384},
+		[10] = {2267065, 0x00, 0x20, ERRATA_A710_2267065},
+		[11] = {2282622, 0x00, 0x21, ERRATA_A710_2282622},
+		[12] = {2291219, 0x00, 0x20, ERRATA_A710_2291219},
+		[13] = {2371105, 0x00, 0x20, ERRATA_A710_2371105},
+		[14] = {2701952, 0x00, 0x21, ERRATA_A710_2701952, \
+			ERRATA_NON_ARM_INTERCONNECT},
+		[15] = {2768515, 0x00, 0x21, ERRATA_A710_2768515}
+	}
+},
+#endif /* CORTEX_A710_H_INC */
+
+#if NEOVERSE_N2_H_INC
+{
+	.cpu_partnumber = NEOVERSE_N2_MIDR,
+	.cpu_errata_list = {
+		[0] = {2002655, 0x00, 0x00, ERRATA_N2_2002655},
+		[1] = {2025414, 0x00, 0x00, ERRATA_N2_2025414},
+		[2] = {2067956, 0x00, 0x00, ERRATA_N2_2067956},
+		[3] = {2138953, 0x00, 0x00, ERRATA_N2_2138953},
+		[4] = {2138956, 0x00, 0x00, ERRATA_N2_2138956},
+		[5] = {2138958, 0x00, 0x00, ERRATA_N2_2138958},
+		[6] = {2189731, 0x00, 0x00, ERRATA_N2_2189731},
+		[7] = {2242400, 0x00, 0x00, ERRATA_N2_2242400},
+		[8] = {2242415, 0x00, 0x00, ERRATA_N2_2242415},
+		[9] = {2280757, 0x00, 0x00, ERRATA_N2_2280757},
+		[10] = {2326639, 0x00, 0x00, ERRATA_N2_2326639},
+		[11] = {2376738, 0x00, 0x00, ERRATA_N2_2376738},
+		[12] = {2388450, 0x00, 0x00, ERRATA_N2_2388450},
+		[13] = {2728475, 0x00, 0x02, ERRATA_N2_2728475, \
+			ERRATA_NON_ARM_INTERCONNECT},
+		[14] = {2743089, 0x00, 0x02, ERRATA_N2_2743089},
+		[15 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* NEOVERSE_N2_H_INC */
+
+#if CORTEX_X2_H_INC
+{
+	.cpu_partnumber = CORTEX_X2_MIDR,
+	.cpu_errata_list = {
+		[0] = {2002765, 0x00, 0x20, ERRATA_X2_2002765},
+		[1] = {2017096, 0x00, 0x20, ERRATA_X2_2017096},
+		[2] = {2058056, 0x00, 0x20, ERRATA_X2_2058056},
+		[3] = {2081180, 0x00, 0x20, ERRATA_X2_2081180},
+		[4] = {2083908, 0x00, 0x20, ERRATA_X2_2083908},
+		[5] = {2147715, 0x20, 0x20, ERRATA_X2_2147715},
+		[6] = {2216384, 0x00, 0x20, ERRATA_X2_2216384},
+		[7] = {2282622, 0x00, 0x21, ERRATA_X2_2282622},
+		[8] = {2371105, 0x00, 0x21, ERRATA_X2_2371105},
+		[9] = {2701952, 0x00, 0x21, ERRATA_X2_2701952, \
+			ERRATA_NON_ARM_INTERCONNECT},
+		[10] = {2768515, 0x00, 0x21, ERRATA_X2_2768515},
+		[11 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_X2_H_INC */
+
+#if CORTEX_A510_H_INC
+{
+	.cpu_partnumber = CORTEX_A510_MIDR,
+	.cpu_errata_list = {
+		[0] = {1922240, 0x00, 0x00, ERRATA_A510_1922240},
+		[1] = {2041909, 0x02, 0x02, ERRATA_A510_2041909},
+		[2] = {2042739, 0x00, 0x02, ERRATA_A510_2042739},
+		[3] = {2172148, 0x00, 0x10, ERRATA_A510_2172148},
+		[4] = {2218950, 0x00, 0x10, ERRATA_A510_2218950},
+		[5] = {2250311, 0x00, 0x10, ERRATA_A510_2250311},
+		[6] = {2288014, 0x00, 0x10, ERRATA_A510_2288014},
+		[7] = {2347730, 0x00, 0x11, ERRATA_A510_2347730},
+		[8] = {2371937, 0x00, 0x11, ERRATA_A510_2371937},
+		[9] = {2666669, 0x00, 0x11, ERRATA_A510_2666669},
+		[10] = {2684597, 0x00, 0x12, ERRATA_A510_2684597},
+		[11 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A510_H_INC */
+
+#if NEOVERSE_V2_H_INC
+{
+	.cpu_partnumber = NEOVERSE_V2_MIDR,
+	.cpu_errata_list = {
+		[0] = {2719103, 0x00, 0x01, ERRATA_V2_2719103, \
+			ERRATA_NON_ARM_INTERCONNECT},
+		[1 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* NEOVERSE_V2_H_INC */
+
+#if CORTEX_A715_H_INC
+{
+	.cpu_partnumber = CORTEX_MAKALU_MIDR,
+	.cpu_errata_list = {
+		[0] = {2701951, 0x00, 0x11, ERRATA_A715_2701951, \
+			ERRATA_NON_ARM_INTERCONNECT},
+		[1 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+	}
+},
+#endif /* CORTEX_A715_H_INC */
+};
+
+/*
+ * Function to do binary search and check for the specific errata ID
+ * in the array of structures specific to the cpu identified.
+ */
+int32_t binary_search(struct em_cpu_list *ptr, uint32_t erratum_id, uint8_t rxpx_val)
+{
+	int low_index = 0U, mid_index = 0U;
+
+	int high_index = MAX_ERRATA_ENTRIES - 1;
+
+	assert(ptr != NULL);
+
+	/*
+	 * Pointer to the errata list of the cpu that matches
+	 * extracted partnumber in the cpu list
+	 */
+	struct em_cpu *erratum_ptr = NULL;
+
+	while (low_index <= high_index) {
+		mid_index = (low_index + high_index) / 2;
+
+		erratum_ptr = &ptr->cpu_errata_list[mid_index];
+		assert(erratum_ptr != NULL);
+
+		if (erratum_id < erratum_ptr->em_errata_id) {
+			high_index = mid_index - 1;
+		} else if (erratum_id > erratum_ptr->em_errata_id) {
+			low_index = mid_index + 1;
+		} else if (erratum_id == erratum_ptr->em_errata_id) {
+			if (RXPX_RANGE(rxpx_val, erratum_ptr->em_rxpx_lo, \
+				erratum_ptr->em_rxpx_hi)) {
+				if ((erratum_ptr->errata_enabled) && \
+				(!(erratum_ptr->non_arm_interconnect))) {
+					return EM_HIGHER_EL_MITIGATION;
+				}
+				return EM_AFFECTED;
+			}
+			return EM_NOT_AFFECTED;
+		}
+	}
+	/* no matching errata ID */
+	return EM_UNKNOWN_ERRATUM;
+}
+
+/* Function to check if the errata exists for the specific CPU and rxpx */
+int32_t verify_errata_implemented(uint32_t errata_id, uint32_t forward_flag)
+{
+	/*
+	 * Read MIDR value and extract the revision, variant and partnumber
+	 */
+	static uint32_t midr_val, cpu_partnum;
+	static uint8_t  cpu_rxpx_val;
+	int32_t ret_val = EM_UNKNOWN_ERRATUM;
+
+	/* Determine the number of cpu listed in the cpu list */
+	uint8_t size_cpulist = ARRAY_SIZE(cpu_list);
+
+	/* Read the midr reg to extract cpu, revision and variant info */
+	midr_val = read_midr();
+
+	/* Extract revision and variant from the MIDR register */
+	cpu_rxpx_val = cpu_get_rev_var();
+
+	/* Extract the cpu partnumber and check if the cpu is in the cpu list */
+	cpu_partnum = EXTRACT_PARTNUM(midr_val);
+
+	for (uint8_t i = 0; i < size_cpulist; i++) {
+		cpu_ptr = &cpu_list[i];
+		uint16_t partnum_extracted = EXTRACT_PARTNUM(cpu_ptr->cpu_partnumber);
+
+		if (partnum_extracted == cpu_partnum) {
+			/*
+			 * If the midr value is in the cpu list, binary search
+			 * for the errata ID and specific revision in the list.
+			 */
+			ret_val = binary_search(cpu_ptr, errata_id, cpu_rxpx_val);
+			break;
+		}
+	}
+	return ret_val;
+}
+
+/* Predicate indicating that a function id is part of EM_ABI */
+bool is_errata_fid(uint32_t smc_fid)
+{
+	return ((smc_fid == ARM_EM_VERSION) ||
+		(smc_fid == ARM_EM_FEATURES) ||
+		(smc_fid == ARM_EM_CPU_ERRATUM_FEATURES));
+
+}
+
+bool validate_spsr_mode(void)
+{
+	/* In AArch64, if the caller is EL1, return true */
+
+	#if __aarch64__
+		if (GET_EL(read_spsr_el3()) == MODE_EL1) {
+			return true;
+		}
+		return false;
+	#else
+
+	/* In AArch32, if in system/svc mode, return true */
+		uint8_t read_el_state = GET_M32(read_spsr());
+
+		if ((read_el_state == (MODE32_svc)) || (read_el_state == MODE32_sys)) {
+			return true;
+		}
+		return false;
+	#endif /* __aarch64__ */
+}
+
+uintptr_t errata_abi_smc_handler(uint32_t smc_fid, u_register_t x1,
+				u_register_t x2, u_register_t x3, u_register_t x4,
+				void *cookie, void *handle, u_register_t flags)
+{
+	int32_t ret_id = EM_UNKNOWN_ERRATUM;
+
+	switch (smc_fid) {
+	case ARM_EM_VERSION:
+		SMC_RET1(handle, MAKE_SMCCC_VERSION(
+			EM_VERSION_MAJOR, EM_VERSION_MINOR
+		));
+		break; /* unreachable */
+	case ARM_EM_FEATURES:
+		if (is_errata_fid((uint32_t)x1)) {
+			SMC_RET1(handle, EM_SUCCESS);
+		}
+
+		SMC_RET1(handle, EM_NOT_SUPPORTED);
+		break; /* unreachable */
+	case ARM_EM_CPU_ERRATUM_FEATURES:
+
+		/*
+		 * If the forward flag is greater than zero and the calling EL
+		 * is EL1 in AArch64 or in system mode or svc mode in case of AArch32,
+		 * return Invalid Parameters.
+		 */
+		if (((uint32_t)x2 != 0) && (validate_spsr_mode())) {
+			SMC_RET1(handle, EM_INVALID_PARAMETERS);
+		}
+		ret_id = verify_errata_implemented((uint32_t)x1, (uint32_t)x2);
+		SMC_RET1(handle, ret_id);
+		break; /* unreachable */
+	default:
+		{
+		   WARN("Unimplemented Errata ABI Service Call: 0x%x\n", smc_fid);
+		   SMC_RET1(handle, EM_UNKNOWN_ERRATUM);
+		   break; /* unreachable */
+		}
+	}
+}
diff --git a/services/std_svc/std_svc_setup.c b/services/std_svc/std_svc_setup.c
index 2884a3b9e..e782d09d2 100644
--- a/services/std_svc/std_svc_setup.c
+++ b/services/std_svc/std_svc_setup.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2022, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2023, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -14,6 +14,7 @@
 #include <lib/psci/psci.h>
 #include <lib/runtime_instr.h>
 #include <services/drtm_svc.h>
+#include <services/errata_abi_svc.h>
 #include <services/pci_svc.h>
 #include <services/rmmd_svc.h>
 #include <services/sdei.h>
@@ -177,6 +178,13 @@ static uintptr_t std_svc_smc_handler(uint32_t smc_fid,
 	}
 #endif /* TRNG_SUPPORT */
 
+#if ERRATA_ABI_SUPPORT
+	if (is_errata_fid(smc_fid)) {
+		return errata_abi_smc_handler(smc_fid, x1, x2, x3, x4, cookie,
+					      handle, flags);
+	}
+#endif /* ERRATA_ABI_SUPPORT */
+
 #if ENABLE_RME
 
 	if (is_rmmd_el3_fid(smc_fid)) {