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Soren Brinkmann76fcae32016-03-06 20:16:27 -08001/*
Michal Simek2a47faa2023-04-14 08:43:51 +02002 * Copyright (c) 2013-2020, Arm Limited and Contributors. All rights reserved.
Michal Simekd4ff2722023-04-20 08:01:03 +02003 * Copyright (c) 2023, Advanced Micro Devices, Inc. All rights reserved.
Soren Brinkmann76fcae32016-03-06 20:16:27 -08004 *
dp-armfa3cf0b2017-05-03 09:38:09 +01005 * SPDX-License-Identifier: BSD-3-Clause
Soren Brinkmann76fcae32016-03-06 20:16:27 -08006 */
7
8/* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */
9
Michal Simekdb988fe2023-02-14 13:10:29 +010010#include <inttypes.h>
11
Antonio Nino Diaze0f90632018-12-14 00:18:21 +000012#include <common/runtime_svc.h>
13#include <tools_share/uuid.h>
14
Amit Nagalf7ecba32023-02-15 18:43:55 +053015#include <custom_svc.h>
Wendy Liangf8fec362017-09-06 09:39:55 -070016#include "ipi_mailbox_svc.h"
Jay Buddhabhatti5b9f3912023-02-02 22:34:03 -080017#include "pm_defs.h"
Jay Buddhabhatti26e138a2022-12-21 23:03:35 -080018#include "zynqmp_pm_svc_main.h"
Soren Brinkmann76fcae32016-03-06 20:16:27 -080019
20/* SMC function IDs for SiP Service queries */
Venkatesh Yadav Abbarapued4f1e82022-04-29 09:58:30 +053021#define ZYNQMP_SIP_SVC_CALL_COUNT U(0x8200ff00)
22#define ZYNQMP_SIP_SVC_UID U(0x8200ff01)
23#define ZYNQMP_SIP_SVC_VERSION U(0x8200ff03)
Soren Brinkmann76fcae32016-03-06 20:16:27 -080024
25/* SiP Service Calls version numbers */
26#define SIP_SVC_VERSION_MAJOR 0
27#define SIP_SVC_VERSION_MINOR 1
28
Wendy Liangf8fec362017-09-06 09:39:55 -070029/* These macros are used to identify PM, IPI calls from the SMC function ID */
Michal Simekdb988fe2023-02-14 13:10:29 +010030#define SIP_FID_MASK GENMASK(23, 16)
31#define XLNX_FID_MASK GENMASK(23, 12)
Soren Brinkmann76fcae32016-03-06 20:16:27 -080032#define PM_FID_VALUE 0u
Wendy Liangf8fec362017-09-06 09:39:55 -070033#define IPI_FID_VALUE 0x1000u
Michal Simekdb988fe2023-02-14 13:10:29 +010034#define is_pm_fid(_fid) (((_fid) & XLNX_FID_MASK) == PM_FID_VALUE)
35#define is_ipi_fid(_fid) (((_fid) & XLNX_FID_MASK) == IPI_FID_VALUE)
Soren Brinkmann76fcae32016-03-06 20:16:27 -080036
37/* SiP Service UUID */
Roberto Vargaseace8f12018-04-26 13:36:53 +010038DEFINE_SVC_UUID2(zynqmp_sip_uuid,
39 0x5c9b1b2a, 0x0586, 0x2340, 0xa6, 0x1b,
40 0xb9, 0x25, 0x82, 0x2d, 0xe3, 0xa5);
Soren Brinkmann76fcae32016-03-06 20:16:27 -080041
42/**
Prasad Kummari7d0623a2023-06-09 14:32:00 +053043 * sip_svc_setup() - Setup SiP Service.
Soren Brinkmann76fcae32016-03-06 20:16:27 -080044 *
Prasad Kummari7d0623a2023-06-09 14:32:00 +053045 * Return: On success, the initialization function must return 0.
46 * Any other return value will cause the framework to ignore
47 * the service.
48 *
49 * Invokes PM setup.
Soren Brinkmann76fcae32016-03-06 20:16:27 -080050 */
51static int32_t sip_svc_setup(void)
52{
53 /* PM implementation as SiP Service */
Rajan Vaja720fd9d2018-10-05 04:42:57 -070054 return pm_setup();
Soren Brinkmann76fcae32016-03-06 20:16:27 -080055}
56
57/**
58 * sip_svc_smc_handler() - Top-level SiP Service SMC handler
Prasad Kummari7d0623a2023-06-09 14:32:00 +053059 * @smc_fid: Function Identifier.
60 * @x1: SMC64 Arguments 1 from kernel.
61 * @x2: SMC64 Arguments 2 from kernel.
62 * @x3: SMC64 Arguments 3 from kernel(upper 32-bits).
63 * @x4: SMC64 Arguments 4 from kernel.
64 * @cookie: Unused
65 * @handle: Pointer to caller's context structure.
66 * @flags: SECURE_FLAG or NON_SECURE_FLAG.
Soren Brinkmann76fcae32016-03-06 20:16:27 -080067 *
68 * Handler for all SiP SMC calls. Handles standard SIP requests
69 * and calls PM SMC handler if the call is for a PM-API function.
Prasad Kummari7d0623a2023-06-09 14:32:00 +053070 *
71 * Return: Unused.
Soren Brinkmann76fcae32016-03-06 20:16:27 -080072 */
Venkatesh Yadav Abbarapuc9505352022-05-16 17:29:04 +053073static uintptr_t sip_svc_smc_handler(uint32_t smc_fid,
Masahiro Yamada5ac9d962018-04-19 01:18:48 +090074 u_register_t x1,
75 u_register_t x2,
76 u_register_t x3,
77 u_register_t x4,
78 void *cookie,
79 void *handle,
80 u_register_t flags)
Soren Brinkmann76fcae32016-03-06 20:16:27 -080081{
Michal Simekdb988fe2023-02-14 13:10:29 +010082 VERBOSE("SMCID: 0x%08x, x1: 0x%016" PRIx64 ", x2: 0x%016" PRIx64 ", x3: 0x%016" PRIx64 ", x4: 0x%016" PRIx64 "\n",
83 smc_fid, x1, x2, x3, x4);
84
Michal Simekdb988fe2023-02-14 13:10:29 +010085 if (smc_fid & SIP_FID_MASK) {
86 WARN("SMC out of SiP assinged range: 0x%x\n", smc_fid);
87 SMC_RET1(handle, SMC_UNK);
88 }
89
Soren Brinkmann76fcae32016-03-06 20:16:27 -080090 /* Let PM SMC handler deal with PM-related requests */
Michal Simekdb455e12023-02-14 08:06:17 +010091 if (is_pm_fid(smc_fid)) {
Soren Brinkmann76fcae32016-03-06 20:16:27 -080092 return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
93 flags);
94 }
95
Wendy Liangf8fec362017-09-06 09:39:55 -070096 /* Let IPI SMC handler deal with IPI-related requests */
97 if (is_ipi_fid(smc_fid)) {
98 return ipi_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
99 flags);
100 }
101
Soren Brinkmann76fcae32016-03-06 20:16:27 -0800102 switch (smc_fid) {
103 case ZYNQMP_SIP_SVC_CALL_COUNT:
104 /* PM functions + default functions */
105 SMC_RET1(handle, PM_API_MAX + 2);
106
107 case ZYNQMP_SIP_SVC_UID:
108 SMC_UUID_RET(handle, zynqmp_sip_uuid);
109
110 case ZYNQMP_SIP_SVC_VERSION:
111 SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR);
112
Amit Nagalf7ecba32023-02-15 18:43:55 +0530113 case ZYNQMP_SIP_SVC_CUSTOM:
114 case ZYNQMP_SIP_SVC64_CUSTOM:
115 return custom_smc_handler(smc_fid, x1, x2, x3, x4, cookie,
116 handle, flags);
117
Soren Brinkmann76fcae32016-03-06 20:16:27 -0800118 default:
119 WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid);
120 SMC_RET1(handle, SMC_UNK);
121 }
122}
123
124/* Register PM Service Calls as runtime service */
125DECLARE_RT_SVC(
126 sip_svc,
127 OEN_SIP_START,
128 OEN_SIP_END,
Venkatesh Yadav Abbarapu336f9f82022-04-28 16:39:07 +0530129 (uint8_t)SMC_TYPE_FAST,
Soren Brinkmann76fcae32016-03-06 20:16:27 -0800130 sip_svc_setup,
131 sip_svc_smc_handler);