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Soren Brinkmann76fcae32016-03-06 20:16:27 -08001/*
Wendy Liangf8fec362017-09-06 09:39:55 -07002 * Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved.
Soren Brinkmann76fcae32016-03-06 20:16:27 -08003 *
dp-armfa3cf0b2017-05-03 09:38:09 +01004 * SPDX-License-Identifier: BSD-3-Clause
Soren Brinkmann76fcae32016-03-06 20:16:27 -08005 */
6
7/* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */
8
Antonio Nino Diaze0f90632018-12-14 00:18:21 +00009#include <common/runtime_svc.h>
10#include <tools_share/uuid.h>
11
Wendy Liangf8fec362017-09-06 09:39:55 -070012#include "ipi_mailbox_svc.h"
Soren Brinkmann76fcae32016-03-06 20:16:27 -080013#include "pm_svc_main.h"
Wendy Liangf8fec362017-09-06 09:39:55 -070014#include "zynqmp_ipi.h"
Soren Brinkmann76fcae32016-03-06 20:16:27 -080015
16/* SMC function IDs for SiP Service queries */
17#define ZYNQMP_SIP_SVC_CALL_COUNT 0x8200ff00
18#define ZYNQMP_SIP_SVC_UID 0x8200ff01
19#define ZYNQMP_SIP_SVC_VERSION 0x8200ff03
20
21/* SiP Service Calls version numbers */
22#define SIP_SVC_VERSION_MAJOR 0
23#define SIP_SVC_VERSION_MINOR 1
24
Wendy Liangf8fec362017-09-06 09:39:55 -070025/* These macros are used to identify PM, IPI calls from the SMC function ID */
Soren Brinkmann76fcae32016-03-06 20:16:27 -080026#define PM_FID_MASK 0xf000u
27#define PM_FID_VALUE 0u
Wendy Liangf8fec362017-09-06 09:39:55 -070028#define IPI_FID_VALUE 0x1000u
Soren Brinkmann76fcae32016-03-06 20:16:27 -080029#define is_pm_fid(_fid) (((_fid) & PM_FID_MASK) == PM_FID_VALUE)
Wendy Liangf8fec362017-09-06 09:39:55 -070030#define is_ipi_fid(_fid) (((_fid) & PM_FID_MASK) == IPI_FID_VALUE)
Soren Brinkmann76fcae32016-03-06 20:16:27 -080031
32/* SiP Service UUID */
Roberto Vargaseace8f12018-04-26 13:36:53 +010033DEFINE_SVC_UUID2(zynqmp_sip_uuid,
34 0x5c9b1b2a, 0x0586, 0x2340, 0xa6, 0x1b,
35 0xb9, 0x25, 0x82, 0x2d, 0xe3, 0xa5);
Soren Brinkmann76fcae32016-03-06 20:16:27 -080036
37/**
38 * sip_svc_setup() - Setup SiP Service
39 *
40 * Invokes PM setup
41 */
42static int32_t sip_svc_setup(void)
43{
44 /* PM implementation as SiP Service */
45 pm_setup();
46
47 return 0;
48}
49
50/**
51 * sip_svc_smc_handler() - Top-level SiP Service SMC handler
52 *
53 * Handler for all SiP SMC calls. Handles standard SIP requests
54 * and calls PM SMC handler if the call is for a PM-API function.
55 */
Masahiro Yamada5ac9d962018-04-19 01:18:48 +090056uintptr_t sip_svc_smc_handler(uint32_t smc_fid,
57 u_register_t x1,
58 u_register_t x2,
59 u_register_t x3,
60 u_register_t x4,
61 void *cookie,
62 void *handle,
63 u_register_t flags)
Soren Brinkmann76fcae32016-03-06 20:16:27 -080064{
65 /* Let PM SMC handler deal with PM-related requests */
66 if (is_pm_fid(smc_fid)) {
67 return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
68 flags);
69 }
70
Wendy Liangf8fec362017-09-06 09:39:55 -070071 /* Let IPI SMC handler deal with IPI-related requests */
72 if (is_ipi_fid(smc_fid)) {
73 return ipi_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
74 flags);
75 }
76
Soren Brinkmann76fcae32016-03-06 20:16:27 -080077 switch (smc_fid) {
78 case ZYNQMP_SIP_SVC_CALL_COUNT:
79 /* PM functions + default functions */
80 SMC_RET1(handle, PM_API_MAX + 2);
81
82 case ZYNQMP_SIP_SVC_UID:
83 SMC_UUID_RET(handle, zynqmp_sip_uuid);
84
85 case ZYNQMP_SIP_SVC_VERSION:
86 SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR);
87
88 default:
89 WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid);
90 SMC_RET1(handle, SMC_UNK);
91 }
92}
93
94/* Register PM Service Calls as runtime service */
95DECLARE_RT_SVC(
96 sip_svc,
97 OEN_SIP_START,
98 OEN_SIP_END,
99 SMC_TYPE_FAST,
100 sip_svc_setup,
101 sip_svc_smc_handler);