From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 11:13:47 +0200
Subject: Adding upstream version 2.8.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 plat/xilinx/zynqmp/sip_svc_setup.c | 105 +++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 plat/xilinx/zynqmp/sip_svc_setup.c

(limited to 'plat/xilinx/zynqmp/sip_svc_setup.c')

diff --git a/plat/xilinx/zynqmp/sip_svc_setup.c b/plat/xilinx/zynqmp/sip_svc_setup.c
new file mode 100644
index 0000000..4ce9b8a
--- /dev/null
+++ b/plat/xilinx/zynqmp/sip_svc_setup.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2013-2020, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */
+
+#include <common/runtime_svc.h>
+#include <tools_share/uuid.h>
+
+#include "ipi_mailbox_svc.h"
+#include "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 PM_FID_MASK	0xf000u
+#define PM_FID_VALUE	0u
+#define IPI_FID_VALUE	0x1000u
+#define EM_FID_MASK     0xf0000u
+#define EM_FID_VALUE    0xE0000u
+#define is_em_fid(_fid) (((_fid) & EM_FID_MASK) == EM_FID_VALUE)
+#define is_pm_fid(_fid) (((_fid) & PM_FID_MASK) == PM_FID_VALUE)
+#define is_ipi_fid(_fid) (((_fid) & PM_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
+ *
+ * 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
+ *
+ * Handler for all SiP SMC calls. Handles standard SIP requests
+ * and calls PM SMC handler if the call is for a PM-API function.
+ */
+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)
+{
+	/* Let EM SMC handler deal with EM-related requests */
+	if (is_em_fid(smc_fid)) {
+		return em_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
+					flags);
+	} else if (is_pm_fid(smc_fid)) {
+	/* Let PM SMC handler deal with PM-related requests */
+		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);
+
+	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);
-- 
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