commit 0e753437e75b68476b524d32c7e9db7f28d2ad85
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 bb37363bd30f5ccc625f47350d3ae56ddcddb236

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

include/plat/arm/common/plat_arm.h

diff --git a/include/plat/arm/common/plat_arm.h b/include/plat/arm/common/plat_arm.h
index 6c2925a..a84047a 100644
--- a/include/plat/arm/common/plat_arm.h
+++ b/include/plat/arm/common/plat_arm.h
@@ -148,6 +148,12 @@
 #define ARM_ROTPK_DEVEL_RSA_ID		2
 #define ARM_ROTPK_DEVEL_ECDSA_ID	3
 
+/* Defines used to retrieve ARM SOC revision */
+#define ARM_SOC_CONTINUATION_CODE	U(0x4)
+#define ARM_SOC_IDENTIFICATION_CODE	U(0x3B)
+#define ARM_SOC_CONTINUATION_SHIFT	U(24)
+#define ARM_SOC_IDENTIFICATION_SHIFT	U(16)
+
 /* IO storage utility functions */
 int arm_io_setup(void);
 
@@ -323,4 +329,7 @@
 void plat_arm_secure_wdt_start(void);
 void plat_arm_secure_wdt_stop(void);
 
+/* Get SOC-ID of ARM platform */
+uint32_t plat_arm_get_soc_id(void);
+
 #endif /* PLAT_ARM_H */

include/plat/common/platform.h

diff --git a/include/plat/common/platform.h b/include/plat/common/platform.h
index 5b5ebb9..e4431d2 100644
--- a/include/plat/common/platform.h
+++ b/include/plat/common/platform.h
@@ -322,4 +322,14 @@
  */
 unsigned int platform_core_pos_helper(unsigned long mpidr);
 
+/*
+ * Optional function to get SOC version
+ */
+int32_t plat_get_soc_version(void);
+
+/*
+ * Optional function to get SOC revision
+ */
+int32_t plat_get_soc_revision(void);
+
 #endif /* PLATFORM_H */

include/services/arm_arch_svc.h

diff --git a/include/services/arm_arch_svc.h b/include/services/arm_arch_svc.h
index 1cb2038..5bbd8bb 100644
--- a/include/services/arm_arch_svc.h
+++ b/include/services/arm_arch_svc.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2020, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -9,7 +9,11 @@
 
 #define SMCCC_VERSION			U(0x80000000)
 #define SMCCC_ARCH_FEATURES		U(0x80000001)
+#define SMCCC_ARCH_SOC_ID		U(0x80000002)
 #define SMCCC_ARCH_WORKAROUND_1		U(0x80008000)
 #define SMCCC_ARCH_WORKAROUND_2		U(0x80007FFF)
 
+#define SMCCC_GET_SOC_VERSION		U(0)
+#define SMCCC_GET_SOC_REVISION		U(1)
+
 #endif /* ARM_ARCH_SVC_H */