1 /* 2 * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * Redistributions of source code must retain the above copyright notice, this 8 * list of conditions and the following disclaimer. 9 * 10 * Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * Neither the name of ARM nor the names of its contributors may be used 15 * to endorse or promote products derived from this software without specific 16 * prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */ 32 33 #include <runtime_svc.h> 34 #include <uuid.h> 35 #include "pm_svc_main.h" 36 37 /* SMC function IDs for SiP Service queries */ 38 #define ZYNQMP_SIP_SVC_CALL_COUNT 0x8200ff00 39 #define ZYNQMP_SIP_SVC_UID 0x8200ff01 40 #define ZYNQMP_SIP_SVC_VERSION 0x8200ff03 41 42 /* SiP Service Calls version numbers */ 43 #define SIP_SVC_VERSION_MAJOR 0 44 #define SIP_SVC_VERSION_MINOR 1 45 46 /* These macros are used to identify PM calls from the SMC function ID */ 47 #define PM_FID_MASK 0xf000u 48 #define PM_FID_VALUE 0u 49 #define is_pm_fid(_fid) (((_fid) & PM_FID_MASK) == PM_FID_VALUE) 50 51 /* SiP Service UUID */ 52 DEFINE_SVC_UUID(zynqmp_sip_uuid, 53 0x2a1d9b5c, 0x8605, 0x4023, 0xa6, 0x1b, 54 0xb9, 0x25, 0x82, 0x2d, 0xe3, 0xa5); 55 56 /** 57 * sip_svc_setup() - Setup SiP Service 58 * 59 * Invokes PM setup 60 */ 61 static int32_t sip_svc_setup(void) 62 { 63 /* PM implementation as SiP Service */ 64 pm_setup(); 65 66 return 0; 67 } 68 69 /** 70 * sip_svc_smc_handler() - Top-level SiP Service SMC handler 71 * 72 * Handler for all SiP SMC calls. Handles standard SIP requests 73 * and calls PM SMC handler if the call is for a PM-API function. 74 */ 75 uint64_t sip_svc_smc_handler(uint32_t smc_fid, 76 uint64_t x1, 77 uint64_t x2, 78 uint64_t x3, 79 uint64_t x4, 80 void *cookie, 81 void *handle, 82 uint64_t flags) 83 { 84 /* Let PM SMC handler deal with PM-related requests */ 85 if (is_pm_fid(smc_fid)) { 86 return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, 87 flags); 88 } 89 90 switch (smc_fid) { 91 case ZYNQMP_SIP_SVC_CALL_COUNT: 92 /* PM functions + default functions */ 93 SMC_RET1(handle, PM_API_MAX + 2); 94 95 case ZYNQMP_SIP_SVC_UID: 96 SMC_UUID_RET(handle, zynqmp_sip_uuid); 97 98 case ZYNQMP_SIP_SVC_VERSION: 99 SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR); 100 101 default: 102 WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid); 103 SMC_RET1(handle, SMC_UNK); 104 } 105 } 106 107 /* Register PM Service Calls as runtime service */ 108 DECLARE_RT_SVC( 109 sip_svc, 110 OEN_SIP_START, 111 OEN_SIP_END, 112 SMC_TYPE_FAST, 113 sip_svc_setup, 114 sip_svc_smc_handler); 115