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114 lines
3.6 KiB
114 lines
3.6 KiB
/*
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* Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */
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#include <runtime_svc.h>
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#include <uuid.h>
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#include "pm_svc_main.h"
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/* SMC function IDs for SiP Service queries */
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#define ZYNQMP_SIP_SVC_CALL_COUNT 0x8200ff00
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#define ZYNQMP_SIP_SVC_UID 0x8200ff01
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#define ZYNQMP_SIP_SVC_VERSION 0x8200ff03
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/* SiP Service Calls version numbers */
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#define SIP_SVC_VERSION_MAJOR 0
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#define SIP_SVC_VERSION_MINOR 1
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/* These macros are used to identify PM calls from the SMC function ID */
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#define PM_FID_MASK 0xf000u
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#define PM_FID_VALUE 0u
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#define is_pm_fid(_fid) (((_fid) & PM_FID_MASK) == PM_FID_VALUE)
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/* SiP Service UUID */
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DEFINE_SVC_UUID(zynqmp_sip_uuid,
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0x2a1d9b5c, 0x8605, 0x4023, 0xa6, 0x1b,
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0xb9, 0x25, 0x82, 0x2d, 0xe3, 0xa5);
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/**
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* sip_svc_setup() - Setup SiP Service
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*
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* Invokes PM setup
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*/
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static int32_t sip_svc_setup(void)
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{
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/* PM implementation as SiP Service */
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pm_setup();
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return 0;
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}
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/**
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* sip_svc_smc_handler() - Top-level SiP Service SMC handler
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*
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* Handler for all SiP SMC calls. Handles standard SIP requests
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* and calls PM SMC handler if the call is for a PM-API function.
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*/
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uint64_t sip_svc_smc_handler(uint32_t smc_fid,
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uint64_t x1,
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uint64_t x2,
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uint64_t x3,
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uint64_t x4,
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void *cookie,
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void *handle,
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uint64_t flags)
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{
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/* Let PM SMC handler deal with PM-related requests */
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if (is_pm_fid(smc_fid)) {
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return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle,
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flags);
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}
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switch (smc_fid) {
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case ZYNQMP_SIP_SVC_CALL_COUNT:
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/* PM functions + default functions */
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SMC_RET1(handle, PM_API_MAX + 2);
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case ZYNQMP_SIP_SVC_UID:
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SMC_UUID_RET(handle, zynqmp_sip_uuid);
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case ZYNQMP_SIP_SVC_VERSION:
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SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR);
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default:
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WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid);
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SMC_RET1(handle, SMC_UNK);
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}
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}
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/* Register PM Service Calls as runtime service */
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DECLARE_RT_SVC(
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sip_svc,
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OEN_SIP_START,
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OEN_SIP_END,
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SMC_TYPE_FAST,
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sip_svc_setup,
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sip_svc_smc_handler);
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