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 * 1. Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * 10 * 2. 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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 24 * POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <assert.h> 28 #include <debug.h> 29 #include <mmio.h> 30 #include <plat_sip_calls.h> 31 #include <rockchip_sip_svc.h> 32 #include <runtime_svc.h> 33 #include <uuid.h> 34 35 /* Rockchip SiP Service UUID */ 36 DEFINE_SVC_UUID(rk_sip_svc_uid, 37 0xe86fc7e2, 0x313e, 0x11e6, 0xb7, 0x0d, 38 0x8f, 0x88, 0xee, 0x74, 0x7b, 0x72); 39 40 #pragma weak rockchip_plat_sip_handler 41 uint64_t rockchip_plat_sip_handler(uint32_t smc_fid, 42 uint64_t x1, 43 uint64_t x2, 44 uint64_t x3, 45 uint64_t x4, 46 void *cookie, 47 void *handle, 48 uint64_t flags) 49 { 50 ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid); 51 SMC_RET1(handle, SMC_UNK); 52 } 53 54 /* 55 * This function is responsible for handling all SiP calls from the NS world 56 */ 57 uint64_t sip_smc_handler(uint32_t smc_fid, 58 uint64_t x1, 59 uint64_t x2, 60 uint64_t x3, 61 uint64_t x4, 62 void *cookie, 63 void *handle, 64 uint64_t flags) 65 { 66 uint32_t ns; 67 68 /* Determine which security state this SMC originated from */ 69 ns = is_caller_non_secure(flags); 70 if (!ns) 71 SMC_RET1(handle, SMC_UNK); 72 73 switch (smc_fid) { 74 case SIP_SVC_CALL_COUNT: 75 /* Return the number of Rockchip SiP Service Calls. */ 76 SMC_RET1(handle, 77 RK_COMMON_SIP_NUM_CALLS + RK_PLAT_SIP_NUM_CALLS); 78 79 case SIP_SVC_UID: 80 /* Return UID to the caller */ 81 SMC_UUID_RET(handle, rk_sip_svc_uid); 82 break; 83 84 case SIP_SVC_VERSION: 85 /* Return the version of current implementation */ 86 SMC_RET2(handle, RK_SIP_SVC_VERSION_MAJOR, 87 RK_SIP_SVC_VERSION_MINOR); 88 break; 89 90 default: 91 return rockchip_plat_sip_handler(smc_fid, x1, x2, x3, x4, 92 cookie, handle, flags); 93 } 94 } 95 96 /* Define a runtime service descriptor for fast SMC calls */ 97 DECLARE_RT_SVC( 98 rockchip_sip_svc, 99 OEN_SIP_START, 100 OEN_SIP_END, 101 SMC_TYPE_FAST, 102 NULL, 103 sip_smc_handler 104 ); 105