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-rw-r--r--plat/arm/board/juno/juno_common.c42
1 files changed, 41 insertions, 1 deletions
diff --git a/plat/arm/board/juno/juno_common.c b/plat/arm/board/juno/juno_common.c
index 9570d2d4c7..da4918cf20 100644
--- a/plat/arm/board/juno/juno_common.c
+++ b/plat/arm/board/juno/juno_common.c
@@ -1,10 +1,13 @@
/*
- * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
+#include <lib/smccc.h>
#include <platform_def.h>
+#include <services/arm_arch_svc.h>
+
#include <plat/arm/common/plat_arm.h>
/*
@@ -91,3 +94,40 @@ const mmap_region_t plat_arm_mmap[] = {
#endif
ARM_CASSERT_MMAP
+
+/*****************************************************************************
+ * plat_is_smccc_feature_available() - This function checks whether SMCCC
+ * feature is availabile for platform.
+ * @fid: SMCCC function id
+ *
+ * Return SMC_ARCH_CALL_SUCCESS if SMCCC feature is available and
+ * SMC_ARCH_CALL_NOT_SUPPORTED otherwise.
+ *****************************************************************************/
+int32_t plat_is_smccc_feature_available(u_register_t fid)
+{
+ switch (fid) {
+ case SMCCC_ARCH_SOC_ID:
+ return SMC_ARCH_CALL_SUCCESS;
+ default:
+ return SMC_ARCH_CALL_NOT_SUPPORTED;
+ }
+}
+
+/* Get SOC version */
+int32_t plat_get_soc_version(void)
+{
+ return (int32_t)
+ ((ARM_SOC_IDENTIFICATION_CODE << ARM_SOC_IDENTIFICATION_SHIFT)
+ | (ARM_SOC_CONTINUATION_CODE << ARM_SOC_CONTINUATION_SHIFT)
+ | JUNO_SOC_ID);
+}
+
+/* Get SOC revision */
+int32_t plat_get_soc_revision(void)
+{
+ unsigned int sys_id;
+
+ sys_id = mmio_read_32(V2M_SYSREGS_BASE + V2M_SYS_ID);
+ return (int32_t)((sys_id >> V2M_SYS_ID_REV_SHIFT) &
+ V2M_SYS_ID_REV_MASK);
+}