1 /* 2 * Copyright (c) 2016, 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 #include <assert.h> 32 #include <debug.h> 33 #include <mmio.h> 34 #include <plat_sip_calls.h> 35 #include <rockchip_sip_svc.h> 36 #include <runtime_svc.h> 37 #include <uuid.h> 38 39 /* Rockchip SiP Service UUID */ 40 DEFINE_SVC_UUID(rk_sip_svc_uid, 41 0xe86fc7e2, 0x313e, 0x11e6, 0xb7, 0x0d, 42 0x8f, 0x88, 0xee, 0x74, 0x7b, 0x72); 43 44 #pragma weak rockchip_plat_sip_handler 45 uint64_t rockchip_plat_sip_handler(uint32_t smc_fid, 46 uint64_t x1, 47 uint64_t x2, 48 uint64_t x3, 49 uint64_t x4, 50 void *cookie, 51 void *handle, 52 uint64_t flags) 53 { 54 ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid); 55 SMC_RET1(handle, SMC_UNK); 56 } 57 58 /* 59 * This function is responsible for handling all SiP calls from the NS world 60 */ 61 uint64_t sip_smc_handler(uint32_t smc_fid, 62 uint64_t x1, 63 uint64_t x2, 64 uint64_t x3, 65 uint64_t x4, 66 void *cookie, 67 void *handle, 68 uint64_t flags) 69 { 70 uint32_t ns; 71 72 /* Determine which security state this SMC originated from */ 73 ns = is_caller_non_secure(flags); 74 if (!ns) 75 SMC_RET1(handle, SMC_UNK); 76 77 switch (smc_fid) { 78 case SIP_SVC_CALL_COUNT: 79 /* Return the number of Rockchip SiP Service Calls. */ 80 SMC_RET1(handle, 81 RK_COMMON_SIP_NUM_CALLS + RK_PLAT_SIP_NUM_CALLS); 82 83 case SIP_SVC_UID: 84 /* Return UID to the caller */ 85 SMC_UUID_RET(handle, rk_sip_svc_uid); 86 break; 87 88 case SIP_SVC_VERSION: 89 /* Return the version of current implementation */ 90 SMC_RET2(handle, RK_SIP_SVC_VERSION_MAJOR, 91 RK_SIP_SVC_VERSION_MINOR); 92 break; 93 94 default: 95 return rockchip_plat_sip_handler(smc_fid, x1, x2, x3, x4, 96 cookie, handle, flags); 97 } 98 } 99 100 /* Define a runtime service descriptor for fast SMC calls */ 101 DECLARE_RT_SVC( 102 rockchip_sip_svc, 103 OEN_SIP_START, 104 OEN_SIP_END, 105 SMC_TYPE_FAST, 106 NULL, 107 sip_smc_handler 108 ); 109