| Caesar Wang | c1bf646 | 2016-06-21 14:44:01 +0800 | [diff] [blame] | 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 | ); |