1 /* 2 * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 /* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */ 8 9 #include <common/runtime_svc.h> 10 #include <tools_share/uuid.h> 11 12 #include <plat_ipi.h> 13 #include "ipi_mailbox_svc.h" 14 #include "pm_svc_main.h" 15 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 25 /* These macros are used to identify PM, IPI calls from the SMC function ID */ 26 #define PM_FID_MASK 0xf000u 27 #define PM_FID_VALUE 0u 28 #define IPI_FID_VALUE 0x1000u 29 #define is_pm_fid(_fid) (((_fid) & PM_FID_MASK) == PM_FID_VALUE) 30 #define is_ipi_fid(_fid) (((_fid) & PM_FID_MASK) == IPI_FID_VALUE) 31 32 /* SiP Service UUID */ 33 DEFINE_SVC_UUID2(zynqmp_sip_uuid, 34 0x5c9b1b2a, 0x0586, 0x2340, 0xa6, 0x1b, 35 0xb9, 0x25, 0x82, 0x2d, 0xe3, 0xa5); 36 37 /** 38 * sip_svc_setup() - Setup SiP Service 39 * 40 * Invokes PM setup 41 */ 42 static int32_t sip_svc_setup(void) 43 { 44 /* Configure IPI data for ZynqMP */ 45 zynqmp_ipi_config_table_init(); 46 47 /* PM implementation as SiP Service */ 48 pm_setup(); 49 50 return 0; 51 } 52 53 /** 54 * sip_svc_smc_handler() - Top-level SiP Service SMC handler 55 * 56 * Handler for all SiP SMC calls. Handles standard SIP requests 57 * and calls PM SMC handler if the call is for a PM-API function. 58 */ 59 uintptr_t sip_svc_smc_handler(uint32_t smc_fid, 60 u_register_t x1, 61 u_register_t x2, 62 u_register_t x3, 63 u_register_t x4, 64 void *cookie, 65 void *handle, 66 u_register_t flags) 67 { 68 /* Let PM SMC handler deal with PM-related requests */ 69 if (is_pm_fid(smc_fid)) { 70 return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, 71 flags); 72 } 73 74 /* Let IPI SMC handler deal with IPI-related requests */ 75 if (is_ipi_fid(smc_fid)) { 76 return ipi_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, 77 flags); 78 } 79 80 switch (smc_fid) { 81 case ZYNQMP_SIP_SVC_CALL_COUNT: 82 /* PM functions + default functions */ 83 SMC_RET1(handle, PM_API_MAX + 2); 84 85 case ZYNQMP_SIP_SVC_UID: 86 SMC_UUID_RET(handle, zynqmp_sip_uuid); 87 88 case ZYNQMP_SIP_SVC_VERSION: 89 SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR); 90 91 default: 92 WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid); 93 SMC_RET1(handle, SMC_UNK); 94 } 95 } 96 97 /* Register PM Service Calls as runtime service */ 98 DECLARE_RT_SVC( 99 sip_svc, 100 OEN_SIP_START, 101 OEN_SIP_END, 102 SMC_TYPE_FAST, 103 sip_svc_setup, 104 sip_svc_smc_handler); 105