1 files changed, 131 insertions, 0 deletions
diff --git a/plat/xilinx/zynqmp/sip_svc_setup.c b/plat/xilinx/zynqmp/sip_svc_setup.c
new file mode 100644
index 0000000..6a8555e
--- /dev/null
+++ b/plat/xilinx/zynqmp/sip_svc_setup.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2013-2020, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2023, Advanced Micro Devices, Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */
+
+#include <inttypes.h>
+
+#include <common/runtime_svc.h>
+#include <tools_share/uuid.h>
+
+#include <custom_svc.h>
+#include "ipi_mailbox_svc.h"
+#include "pm_defs.h"
+#include "zynqmp_pm_svc_main.h"
+
+/* SMC function IDs for SiP Service queries */
+#define ZYNQMP_SIP_SVC_CALL_COUNT	U(0x8200ff00)
+#define ZYNQMP_SIP_SVC_UID		U(0x8200ff01)
+#define ZYNQMP_SIP_SVC_VERSION		U(0x8200ff03)
+
+/* SiP Service Calls version numbers */
+#define SIP_SVC_VERSION_MAJOR	0
+#define SIP_SVC_VERSION_MINOR	1
+
+/* These macros are used to identify PM, IPI calls from the SMC function ID */
+#define SIP_FID_MASK	GENMASK(23, 16)
+#define XLNX_FID_MASK	GENMASK(23, 12)
+#define PM_FID_VALUE	0u
+#define IPI_FID_VALUE	0x1000u
+#define is_pm_fid(_fid) (((_fid) & XLNX_FID_MASK) == PM_FID_VALUE)
+#define is_ipi_fid(_fid) (((_fid) & XLNX_FID_MASK) == IPI_FID_VALUE)
+
+/* SiP Service UUID */
+DEFINE_SVC_UUID2(zynqmp_sip_uuid,
+	0x5c9b1b2a, 0x0586, 0x2340, 0xa6, 0x1b,
+	0xb9, 0x25, 0x82, 0x2d, 0xe3, 0xa5);
+
+/**
+ * sip_svc_setup() - Setup SiP Service.
+ *
+ * Return: On success, the initialization function must return 0.
+ *         Any other return value will cause the framework to ignore
+ *         the service.
+ *
+ * Invokes PM setup.
+ */
+static int32_t sip_svc_setup(void)
+{
+	/* PM implementation as SiP Service */
+	return pm_setup();
+}
+
+/**
+ * sip_svc_smc_handler() - Top-level SiP Service SMC handler
+ * @smc_fid: Function Identifier.
+ * @x1: SMC64 Arguments 1 from kernel.
+ * @x2: SMC64 Arguments 2 from kernel.
+ * @x3: SMC64 Arguments 3 from kernel(upper 32-bits).
+ * @x4: SMC64 Arguments 4 from kernel.
+ * @cookie: Unused
+ * @handle: Pointer to caller's context structure.
+ * @flags: SECURE_FLAG or NON_SECURE_FLAG.
+ *
+ * Handler for all SiP SMC calls. Handles standard SIP requests
+ * and calls PM SMC handler if the call is for a PM-API function.
+ *
+ * Return: Unused.
+ */
+static uintptr_t sip_svc_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)
+{
+	VERBOSE("SMCID: 0x%08x, x1: 0x%016" PRIx64 ", x2: 0x%016" PRIx64 ", x3: 0x%016" PRIx64 ", x4: 0x%016" PRIx64 "\n",
+		smc_fid, x1, x2, x3, x4);
+
+	if (smc_fid & SIP_FID_MASK) {
+		WARN("SMC out of SiP assinged range: 0x%x\n", smc_fid);
+		SMC_RET1(handle, SMC_UNK);
+	}
+
+	/* Let PM SMC handler deal with PM-related requests */
+	if (is_pm_fid(smc_fid)) {
+		return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
+				      flags);
+	}
+
+	/* Let IPI SMC handler deal with IPI-related requests */
+	if (is_ipi_fid(smc_fid)) {
+		return ipi_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
+				      flags);
+	}
+
+	switch (smc_fid) {
+	case ZYNQMP_SIP_SVC_CALL_COUNT:
+		/* PM functions + default functions */
+		SMC_RET1(handle, PM_API_MAX + 2);
+
+	case ZYNQMP_SIP_SVC_UID:
+		SMC_UUID_RET(handle, zynqmp_sip_uuid);
+
+	case ZYNQMP_SIP_SVC_VERSION:
+		SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR);
+
+	case ZYNQMP_SIP_SVC_CUSTOM:
+	case ZYNQMP_SIP_SVC64_CUSTOM:
+		return custom_smc_handler(smc_fid, x1, x2, x3, x4, cookie,
+					  handle, flags);
+
+	default:
+		WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid);
+		SMC_RET1(handle, SMC_UNK);
+	}
+}
+
+/* Register PM Service Calls as runtime service */
+DECLARE_RT_SVC(
+		sip_svc,
+		OEN_SIP_START,
+		OEN_SIP_END,
+		(uint8_t)SMC_TYPE_FAST,
+		sip_svc_setup,
+		sip_svc_smc_handler);