1 /* 2 * Copyright (c) 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 #include <assert.h> 31 #include <debug.h> 32 #include <mtk_sip_svc.h> 33 #include <runtime_svc.h> 34 #include <uuid.h> 35 36 /* Mediatek SiP Service UUID */ 37 DEFINE_SVC_UUID(mtk_sip_svc_uid, 38 0xf7582ba4, 0x4262, 0x4d7d, 0x80, 0xe5, 39 0x8f, 0x95, 0x05, 0x00, 0x0f, 0x3d); 40 41 /* 42 * This function handles Mediatek defined SiP Calls */ 43 static uint64_t mediatek_sip_handler(uint32_t smc_fid, 44 uint64_t x1, 45 uint64_t x2, 46 uint64_t x3, 47 uint64_t x4, 48 void *cookie, 49 void *handle) 50 { 51 uint64_t ret; 52 53 switch (smc_fid) { 54 case MTK_SIP_SET_AUTHORIZED_SECURE_REG: 55 ret = mt_sip_set_authorized_sreg((uint32_t)x1, (uint32_t)x2); 56 SMC_RET1(handle, ret); 57 58 case MTK_SIP_PWR_ON_MTCMOS: 59 ret = mt_sip_pwr_on_mtcmos((uint32_t)x1); 60 SMC_RET1(handle, ret); 61 62 case MTK_SIP_PWR_OFF_MTCMOS: 63 ret = mt_sip_pwr_off_mtcmos((uint32_t)x1); 64 SMC_RET1(handle, ret); 65 66 case MTK_SIP_PWR_MTCMOS_SUPPORT: 67 ret = mt_sip_pwr_mtcmos_support(); 68 SMC_RET1(handle, ret); 69 70 default: 71 ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid); 72 break; 73 } 74 75 SMC_RET1(handle, SMC_UNK); 76 } 77 78 /* 79 * This function is responsible for handling all SiP calls from the NS world 80 */ 81 uint64_t sip_smc_handler(uint32_t smc_fid, 82 uint64_t x1, 83 uint64_t x2, 84 uint64_t x3, 85 uint64_t x4, 86 void *cookie, 87 void *handle, 88 uint64_t flags) 89 { 90 uint32_t ns; 91 92 /* Determine which security state this SMC originated from */ 93 ns = is_caller_non_secure(flags); 94 if (!ns) 95 SMC_RET1(handle, SMC_UNK); 96 97 switch (smc_fid) { 98 case SIP_SVC_CALL_COUNT: 99 /* Return the number of Mediatek SiP Service Calls. */ 100 SMC_RET1(handle, MTK_SIP_NUM_CALLS); 101 102 case SIP_SVC_UID: 103 /* Return UID to the caller */ 104 SMC_UUID_RET(handle, mtk_sip_svc_uid); 105 106 case SIP_SVC_VERSION: 107 /* Return the version of current implementation */ 108 SMC_RET2(handle, MTK_SIP_SVC_VERSION_MAJOR, 109 MTK_SIP_SVC_VERSION_MINOR); 110 111 default: 112 return mediatek_sip_handler(smc_fid, x1, x2, x3, x4, 113 cookie, handle); 114 } 115 } 116 117 /* Define a runtime service descriptor for fast SMC calls */ 118 DECLARE_RT_SVC( 119 mediatek_sip_svc, 120 OEN_SIP_START, 121 OEN_SIP_END, 122 SMC_TYPE_FAST, 123 NULL, 124 sip_smc_handler 125 ); 126