| Soren Brinkmann | 76fcae3 | 2016-03-06 20:16:27 -0800 | [diff] [blame] | 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); |