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/*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <arm_sip_svc.h>
#include <debug.h>
#include <pmf.h>
#include <runtime_svc.h>
#include <stdint.h>
#include <uuid.h>
/* ARM SiP Service UUID */
DEFINE_SVC_UUID(arm_sip_svc_uid,
0xe2756d55, 0x3360, 0x4bb5, 0xbf, 0xf3,
0x62, 0x79, 0xfd, 0x11, 0x37, 0xff);
static int arm_sip_setup(void)
{
if (pmf_setup() != 0)
return 1;
return 0;
}
/*
* This function handles ARM defined SiP Calls
*/
static uintptr_t arm_sip_handler(unsigned int smc_fid,
u_register_t x1,
u_register_t x2,
u_register_t x3,
u_register_t x4,
void *cookie,
void *handle,
u_register_t flags)
{
/*
* Dispatch PMF calls to PMF SMC handler and return its return
* value
*/
if (is_pmf_fid(smc_fid)) {
return pmf_smc_handler(smc_fid, x1, x2, x3, x4, cookie,
handle, flags);
}
switch (smc_fid) {
case ARM_SIP_SVC_CALL_COUNT:
/*
* Return the number of SiP Service Calls. PMF is the only
* SiP service implemented; so return number of PMF calls
*/
SMC_RET1(handle, PMF_NUM_SMC_CALLS);
case ARM_SIP_SVC_UID:
/* Return UID to the caller */
SMC_UUID_RET(handle, arm_sip_svc_uid);
case ARM_SIP_SVC_VERSION:
/* Return the version of current implementation */
SMC_RET2(handle, ARM_SIP_SVC_VERSION_MAJOR, ARM_SIP_SVC_VERSION_MINOR);
default:
WARN("Unimplemented ARM SiP Service Call: 0x%x \n", smc_fid);
SMC_RET1(handle, SMC_UNK);
}
}
/* Define a runtime service descriptor for fast SMC calls */
DECLARE_RT_SVC(
arm_sip_svc,
OEN_SIP_START,
OEN_SIP_END,
SMC_TYPE_FAST,
arm_sip_setup,
arm_sip_handler
);