commit f809c6e72611e80b8b3a97c073e2e09c3ec9456d
author Manish V Badarkhe <Manish.Badarkhe@arm.com> Sat Feb 22 08:43:00 2020 +0000
committer Manish V Badarkhe <Manish.Badarkhe@arm.com> Tue Mar 17 10:14:35 2020 +0000
tree 5fb7659f153f6305f355b7abc702abdf7160ee85
parent 38a4c87f60dc6b15c4d64fe110fedf7bdadf6244

Implement SMCCC_ARCH_SOC_ID SMC call

Implemented SMCCC_ARCH_SOC_ID call in order to get below
SOC information:

1. SOC revision
2. SOC version

Implementation done using below SMCCC specification document:
https://developer.arm.com/docs/den0028/c

Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: Ie0595f1c345a6429a6fb4a7f05534a0ca9c9a48b

services/arm_arch_svc/arm_arch_svc_setup.c

diff --git a/services/arm_arch_svc/arm_arch_svc_setup.c b/services/arm_arch_svc/arm_arch_svc_setup.c
index 6dac56e..ba53930 100644
--- a/services/arm_arch_svc/arm_arch_svc_setup.c
+++ b/services/arm_arch_svc/arm_arch_svc_setup.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2020, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -12,18 +12,27 @@
 #include <lib/smccc.h>
 #include <services/arm_arch_svc.h>
 #include <smccc_helpers.h>
+#include <plat/common/platform.h>
 
 static int32_t smccc_version(void)
 {
 	return MAKE_SMCCC_VERSION(SMCCC_MAJOR_VERSION, SMCCC_MINOR_VERSION);
 }
 
-static int32_t smccc_arch_features(u_register_t arg)
+static int32_t smccc_arch_features(u_register_t arg1, u_register_t arg2)
 {
-	switch (arg) {
+	switch (arg1) {
 	case SMCCC_VERSION:
 	case SMCCC_ARCH_FEATURES:
 		return SMC_OK;
+	case SMCCC_ARCH_SOC_ID:
+		if (arg2 == SMCCC_GET_SOC_REVISION) {
+			return plat_get_soc_revision();
+		}
+		if (arg2 == SMCCC_GET_SOC_VERSION) {
+			return plat_get_soc_version();
+		}
+		return SMC_ARCH_CALL_INVAL_PARAM;
 #if WORKAROUND_CVE_2017_5715
 	case SMCCC_ARCH_WORKAROUND_1:
 		if (check_wa_cve_2017_5715() == ERRATA_NOT_APPLIES)
@@ -94,7 +103,7 @@
 	case SMCCC_VERSION:
 		SMC_RET1(handle, smccc_version());
 	case SMCCC_ARCH_FEATURES:
-		SMC_RET1(handle, smccc_arch_features(x1));
+		SMC_RET1(handle, smccc_arch_features(x1, x2));
 #if WORKAROUND_CVE_2017_5715
 	case SMCCC_ARCH_WORKAROUND_1:
 		/*