Merge changes from topic "mb/deprecate-rss-for-fvp" into integration

* changes:
  refactor(fvp): remove RSS usage
  refactor(rss)!: remove PLAT_RSS_NOT_SUPPORTED build option
diff --git a/Makefile b/Makefile
index 97c3c15..81143e4 100644
--- a/Makefile
+++ b/Makefile
@@ -1191,7 +1191,6 @@
 	NS_TIMER_SWITCH \
 	OVERRIDE_LIBC \
 	PL011_GENERIC_UART \
-	PLAT_RSS_NOT_SUPPORTED \
 	PROGRAMMABLE_RESET_ADDRESS \
 	PSCI_EXTENDED_STATE_ID \
 	PSCI_OS_INIT_MODE \
@@ -1354,7 +1353,6 @@
 	NS_TIMER_SWITCH \
 	PL011_GENERIC_UART \
 	PLAT_${PLAT} \
-	PLAT_RSS_NOT_SUPPORTED \
 	PROGRAMMABLE_RESET_ADDRESS \
 	PSCI_EXTENDED_STATE_ID \
 	PSCI_OS_INIT_MODE \
diff --git a/docs/design_documents/measured_boot.rst b/docs/design_documents/measured_boot.rst
index c4e5213..8a2ab2d 100644
--- a/docs/design_documents/measured_boot.rst
+++ b/docs/design_documents/measured_boot.rst
@@ -222,7 +222,7 @@
    - Public key data size is passed as the third argument to this function.
    - This function must return 0 on success, a signed integer error code
      otherwise.
-   - In FVP platform, this function is used to calculate the hash of the given
+   - In TC2 platform, this function is used to calculate the hash of the given
      key and forward this hash to RSS alongside the measurement of the image
      which the key signs.
 
diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index 80baf9c..599aed9 100644
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -1077,11 +1077,6 @@
   if FEAT_TRF is implemented. This flag can take the values 0 to 2, to align
   with the ``FEATURE_DETECTION`` mechanism. This flag is disabled by default.
 
-- ``PLAT_RSS_NOT_SUPPORTED``: Boolean option to enable the usage of the PSA
-  APIs on platforms that doesn't support RSS (providing Arm CCA HES
-  functionalities). When enabled (``1``), a mocked version of the APIs are used.
-  The default value is 0.
-
 - ``CONDITIONAL_CMO``: Boolean option to enable call to platform-defined routine
   ``plat_can_cmo`` which will return zero if cache management operations should
   be skipped and non-zero otherwise. By default, this option is disabled which
diff --git a/lib/psa/measured_boot.c b/lib/psa/measured_boot.c
index c359e9f..38990b5 100644
--- a/lib/psa/measured_boot.c
+++ b/lib/psa/measured_boot.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, Arm Limited. All rights reserved.
+ * Copyright (c) 2022-2023, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  *
@@ -61,7 +61,6 @@
 	INFO(" - locking     : %s\n", lock_measurement ? "true" : "false");
 }
 
-#if !PLAT_RSS_NOT_SUPPORTED
 psa_status_t
 rss_measured_boot_extend_measurement(uint8_t index,
 				     const uint8_t *signer_id,
@@ -175,47 +174,3 @@
 
 	return status;
 }
-
-#else /* !PLAT_RSS_NOT_SUPPORTED */
-
-psa_status_t
-rss_measured_boot_extend_measurement(uint8_t index,
-				     const uint8_t *signer_id,
-				     size_t signer_id_size,
-				     const uint8_t *version,
-				     size_t version_size,
-				     uint32_t measurement_algo,
-				     const uint8_t *sw_type,
-				     size_t sw_type_size,
-				     const uint8_t *measurement_value,
-				     size_t measurement_value_size,
-				     bool lock_measurement)
-{
-	log_measurement(index, signer_id, signer_id_size,
-			version, version_size, sw_type, sw_type_size,
-			measurement_algo, measurement_value,
-			measurement_value_size, lock_measurement);
-
-	return PSA_SUCCESS;
-}
-
-psa_status_t rss_measured_boot_read_measurement(uint8_t index,
-					uint8_t *signer_id,
-					size_t signer_id_size,
-					size_t *signer_id_len,
-					uint8_t *version,
-					size_t version_size,
-					size_t *version_len,
-					uint32_t *measurement_algo,
-					uint8_t *sw_type,
-					size_t sw_type_size,
-					size_t *sw_type_len,
-					uint8_t *measurement_value,
-					size_t measurement_value_size,
-					size_t *measurement_value_len,
-					bool *is_locked)
-{
-	return PSA_SUCCESS;
-}
-
-#endif /* !PLAT_RSS_NOT_SUPPORTED */
diff --git a/make_helpers/defaults.mk b/make_helpers/defaults.mk
index f0f157c..3ff0aaf 100644
--- a/make_helpers/defaults.mk
+++ b/make_helpers/defaults.mk
@@ -347,9 +347,6 @@
 # Disable Firmware update support by default
 PSA_FWU_SUPPORT			:= 0
 
-# By default, disable the mocking of RSS provided services
-PLAT_RSS_NOT_SUPPORTED		:= 0
-
 # Dynamic Root of Trust for Measurement support
 DRTM_SUPPORT			:= 0
 
diff --git a/plat/arm/board/fvp/fvp_common_measured_boot.c b/plat/arm/board/fvp/fvp_common_measured_boot.c
index 0c1d5e7..d56f510 100644
--- a/plat/arm/board/fvp/fvp_common_measured_boot.c
+++ b/plat/arm/board/fvp/fvp_common_measured_boot.c
@@ -19,7 +19,6 @@
 int plat_mboot_measure_image(unsigned int image_id, image_info_t *image_data)
 {
 	int err;
-	int rc = 0;
 
 	/* Calculate image hash and record data in Event Log */
 	err = event_log_measure_and_record(image_data->image_base,
@@ -29,26 +28,14 @@
 	if (err != 0) {
 		ERROR("%s%s image id %u (%i)\n",
 		      "Failed to ", "record in event log", image_id, err);
-		rc = err;
+		return err;
 	}
 
-	/* Calculate image hash and record data in RSS */
-	err = rss_mboot_measure_and_record(fvp_rss_mboot_metadata,
-					   image_data->image_base,
-					   image_data->image_size,
-					   image_id);
-	if (err != 0) {
-		ERROR("%s%s image id %u (%i)\n",
-		      "Failed to ", "record in RSS", image_id, err);
-		rc = (rc == 0) ? err : -1;
-	}
-
-	return rc;
+	return 0;
 }
 
 int plat_mboot_measure_key(const void *pk_oid, const void *pk_ptr,
 			   size_t pk_len)
 {
-	return rss_mboot_set_signer_id(fvp_rss_mboot_metadata, pk_oid, pk_ptr,
-				       pk_len);
+	return 0;
 }
diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk
index 2fdff34..df26dd7 100644
--- a/plat/arm/board/fvp/platform.mk
+++ b/plat/arm/board/fvp/platform.mk
@@ -440,10 +440,6 @@
     override BL1_SOURCES =
 endif
 
-# RSS is not supported on FVP right now. Thus, we use the mocked version
-# of the provided PSA APIs. They return with success and hard-coded token/key.
-PLAT_RSS_NOT_SUPPORTED	:= 1
-
 # Include Measured Boot makefile before any Crypto library makefile.
 # Crypto library makefile may need default definitions of Measured Boot build
 # flags present in Measured Boot makefile.
@@ -471,23 +467,6 @@
 BL2_SOURCES		+=	plat/arm/board/fvp/fvp_common_measured_boot.c	\
 				plat/arm/board/fvp/fvp_bl2_measured_boot.c	\
 				lib/psa/measured_boot.c
-
-# Even though RSS is not supported on FVP (see above), we support overriding
-# PLAT_RSS_NOT_SUPPORTED from the command line, just for the purpose of building
-# the code to detect any build regressions. The resulting firmware will not be
-# functional.
-ifneq (${PLAT_RSS_NOT_SUPPORTED},1)
-    $(warning "RSS is not supported on FVP. The firmware will not be functional.")
-    include drivers/arm/rss/rss_comms.mk
-    BL1_SOURCES		+=	${RSS_COMMS_SOURCES}
-    BL2_SOURCES		+=	${RSS_COMMS_SOURCES}
-    BL31_SOURCES	+=	${RSS_COMMS_SOURCES}
-
-    BL1_CFLAGS		+=	-DPLAT_RSS_COMMS_PAYLOAD_MAX_SIZE=0
-    BL2_CFLAGS		+=	-DPLAT_RSS_COMMS_PAYLOAD_MAX_SIZE=0
-    BL31_CFLAGS		+=	-DPLAT_RSS_COMMS_PAYLOAD_MAX_SIZE=0
-endif
-
 endif
 
 ifeq (${DRTM_SUPPORT}, 1)