105 lines
3.0 KiB
C
105 lines
3.0 KiB
C
/*
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* Copyright (c) 2016, 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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#include <arm_sip_svc.h>
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#include <debug.h>
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#include <pmf.h>
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#include <runtime_svc.h>
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#include <stdint.h>
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#include <uuid.h>
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/* ARM SiP Service UUID */
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DEFINE_SVC_UUID(arm_sip_svc_uid,
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0xe2756d55, 0x3360, 0x4bb5, 0xbf, 0xf3,
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0x62, 0x79, 0xfd, 0x11, 0x37, 0xff);
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static int arm_sip_setup(void)
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{
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if (pmf_setup() != 0)
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return 1;
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return 0;
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}
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/*
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* This function handles ARM defined SiP Calls
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*/
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static uintptr_t arm_sip_handler(unsigned int smc_fid,
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u_register_t x1,
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u_register_t x2,
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u_register_t x3,
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u_register_t x4,
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void *cookie,
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void *handle,
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u_register_t flags)
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{
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/*
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* Dispatch PMF calls to PMF SMC handler and return its return
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* value
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*/
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if (is_pmf_fid(smc_fid)) {
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return pmf_smc_handler(smc_fid, x1, x2, x3, x4, cookie,
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handle, flags);
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}
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switch (smc_fid) {
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case ARM_SIP_SVC_CALL_COUNT:
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/*
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* Return the number of SiP Service Calls. PMF is the only
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* SiP service implemented; so return number of PMF calls
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*/
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SMC_RET1(handle, PMF_NUM_SMC_CALLS);
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case ARM_SIP_SVC_UID:
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/* Return UID to the caller */
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SMC_UUID_RET(handle, arm_sip_svc_uid);
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case ARM_SIP_SVC_VERSION:
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/* Return the version of current implementation */
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SMC_RET2(handle, ARM_SIP_SVC_VERSION_MAJOR, ARM_SIP_SVC_VERSION_MINOR);
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default:
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WARN("Unimplemented ARM 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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/* Define a runtime service descriptor for fast SMC calls */
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DECLARE_RT_SVC(
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arm_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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arm_sip_setup,
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arm_sip_handler
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);
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