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/*
* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <common/debug.h>
#include <common/runtime_svc.h>
#include <drivers/console.h>
#include <lib/mmio.h>
#include <tools_share/uuid.h>
#include <mtk_plat_common.h>
#include <mtk_sip_svc.h>
#include <plat_sip_calls.h>
/* Mediatek SiP Service UUID */
DEFINE_SVC_UUID2(mtk_sip_svc_uid,
0xa42b58f7, 0x6242, 0x7d4d, 0x80, 0xe5,
0x8f, 0x95, 0x05, 0x00, 0x0f, 0x3d);
#pragma weak mediatek_plat_sip_handler
uintptr_t mediatek_plat_sip_handler(uint32_t 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)
{
ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
SMC_RET1(handle, SMC_UNK);
}
/*
* This function handles Mediatek defined SiP Calls */
uintptr_t mediatek_sip_handler(uint32_t 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)
{
uint32_t ns;
/* if parameter is sent from SMC32. Clean top 32 bits */
clean_top_32b_of_param(smc_fid, &x1, &x2, &x3, &x4);
/* Determine which security state this SMC originated from */
ns = is_caller_non_secure(flags);
if (!ns) {
/* SiP SMC service secure world's call */
;
} else {
/* SiP SMC service normal world's call */
switch (smc_fid) {
#if MTK_SIP_SET_AUTHORIZED_SECURE_REG_ENABLE
case MTK_SIP_SET_AUTHORIZED_SECURE_REG: {
/* only use ret here */
uint64_t ret;
ret = mt_sip_set_authorized_sreg((uint32_t)x1,
(uint32_t)x2);
SMC_RET1(handle, ret);
}
#endif
#if MTK_SIP_KERNEL_BOOT_ENABLE
case MTK_SIP_KERNEL_BOOT_AARCH32:
boot_to_kernel(x1, x2, x3, x4);
SMC_RET0(handle);
#endif
default:
/* Do nothing in default case */
break;
}
}
return mediatek_plat_sip_handler(smc_fid, x1, x2, x3, x4,
cookie, handle, flags);
}
/*
* This function is responsible for handling all SiP calls from the NS world
*/
uintptr_t sip_smc_handler(uint32_t 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)
{
switch (smc_fid) {
case SIP_SVC_CALL_COUNT:
/* Return the number of Mediatek SiP Service Calls. */
SMC_RET1(handle,
MTK_COMMON_SIP_NUM_CALLS + MTK_PLAT_SIP_NUM_CALLS);
case SIP_SVC_UID:
/* Return UID to the caller */
SMC_UUID_RET(handle, mtk_sip_svc_uid);
case SIP_SVC_VERSION:
/* Return the version of current implementation */
SMC_RET2(handle, MTK_SIP_SVC_VERSION_MAJOR,
MTK_SIP_SVC_VERSION_MINOR);
default:
return mediatek_sip_handler(smc_fid, x1, x2, x3, x4,
cookie, handle, flags);
}
}
/* Define a runtime service descriptor for fast SMC calls */
DECLARE_RT_SVC(
mediatek_sip_svc,
OEN_SIP_START,
OEN_SIP_END,
SMC_TYPE_FAST,
NULL,
sip_smc_handler
);
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