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 "ipi_mailbox_svc.h" 13 #include "pm_svc_main.h" 14 15 /* SMC function IDs for SiP Service queries */ 16 #define ZYNQMP_SIP_SVC_CALL_COUNT 0x8200ff00 17 #define ZYNQMP_SIP_SVC_UID 0x8200ff01 18 #define ZYNQMP_SIP_SVC_VERSION 0x8200ff03 19 20 /* SiP Service Calls version numbers */ 21 #define SIP_SVC_VERSION_MAJOR 0 22 #define SIP_SVC_VERSION_MINOR 1 23 24 /* These macros are used to identify PM, IPI calls from the SMC function ID */ 25 #define PM_FID_MASK 0xf000u 26 #define PM_FID_VALUE 0u 27 #define IPI_FID_VALUE 0x1000u 28 #define is_pm_fid(_fid) (((_fid) & PM_FID_MASK) == PM_FID_VALUE) 29 #define is_ipi_fid(_fid) (((_fid) & PM_FID_MASK) == IPI_FID_VALUE) 30 31 /* SiP Service UUID */ 32 DEFINE_SVC_UUID2(zynqmp_sip_uuid, 33 0x5c9b1b2a, 0x0586, 0x2340, 0xa6, 0x1b, 34 0xb9, 0x25, 0x82, 0x2d, 0xe3, 0xa5); 35 36 /** 37 * sip_svc_setup() - Setup SiP Service 38 * 39 * Invokes PM setup 40 */ 41 static int32_t sip_svc_setup(void) 42 { 43 /* PM implementation as SiP Service */ 44 pm_setup(); 45 46 return 0; 47 } 48 49 /** 50 * sip_svc_smc_handler() - Top-level SiP Service SMC handler 51 * 52 * Handler for all SiP SMC calls. Handles standard SIP requests 53 * and calls PM SMC handler if the call is for a PM-API function. 54 */ 55 uintptr_t sip_svc_smc_handler(uint32_t smc_fid, 56 u_register_t x1, 57 u_register_t x2, 58 u_register_t x3, 59 u_register_t x4, 60 void *cookie, 61 void *handle, 62 u_register_t flags) 63 { 64 /* Let PM SMC handler deal with PM-related requests */ 65 if (is_pm_fid(smc_fid)) { 66 return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, 67 flags); 68 } 69 70 /* Let IPI SMC handler deal with IPI-related requests */ 71 if (is_ipi_fid(smc_fid)) { 72 return ipi_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, 73 flags); 74 } 75 76 switch (smc_fid) { 77 case ZYNQMP_SIP_SVC_CALL_COUNT: 78 /* PM functions + default functions */ 79 SMC_RET1(handle, PM_API_MAX + 2); 80 81 case ZYNQMP_SIP_SVC_UID: 82 SMC_UUID_RET(handle, zynqmp_sip_uuid); 83 84 case ZYNQMP_SIP_SVC_VERSION: 85 SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR); 86 87 default: 88 WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid); 89 SMC_RET1(handle, SMC_UNK); 90 } 91 } 92 93 /* Register PM Service Calls as runtime service */ 94 DECLARE_RT_SVC( 95 sip_svc, 96 OEN_SIP_START, 97 OEN_SIP_END, 98 SMC_TYPE_FAST, 99 sip_svc_setup, 100 sip_svc_smc_handler); 101