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stm32mp1: add support for SiP services

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Change-Id: I9c8241d8cd9d95b647c612dd66dd554d5965c2ac
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Mathieu Belou <mathieu.belou@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
This commit is contained in:
Yann Gautier 2019-01-17 14:51:25 +01:00
parent 1fc2130c5b
commit a42bad3763
3 changed files with 120 additions and 1 deletions
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31
plat/st/stm32mp1/include/stm32mp1_smc.h Normal file
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@ -0,0 +1,31 @@
/*
* Copyright (c) 2016-2019, STMicroelectronics - All Rights Reserved
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef STM32MP1_SMC_H
#define STM32MP1_SMC_H
/*
* SMC function IDs for STM32 Service queries
* STM32 SMC services use the space between 0x82000000 and 0x8200FFFF
* like this is defined in SMC calling Convention by ARM
* for SiP (silicon Partner)
* https://developer.arm.com/docs/den0028/latest
*/
/* SMC function IDs for SiP Service queries */
#define STM32_SIP_SVC_CALL_COUNT 0x8200ff00
#define STM32_SIP_SVC_UID 0x8200ff01
/* 0x8200ff02 is reserved */
#define STM32_SIP_SVC_VERSION 0x8200ff03
/* STM32 SiP Service Calls version numbers */
#define STM32_SIP_SVC_VERSION_MAJOR 0x0
#define STM32_SIP_SVC_VERSION_MINOR 0x1
/* Number of STM32 SiP Calls implemented */
#define STM32_COMMON_SIP_NUM_CALLS 3
#endif /* STM32MP1_SMC_H */

85
plat/st/stm32mp1/services/stm32mp1_svc_setup.c Normal file
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@ -0,0 +1,85 @@
/*
* Copyright (c) 2014-2019, STMicroelectronics - All Rights Reserved
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdbool.h>
#include <stdint.h>
#include <common/debug.h>
#include <common/runtime_svc.h>
#include <lib/psci/psci.h>
#include <tools_share/uuid.h>
#include <stm32mp1_smc.h>
/* STM32 SiP Service UUID */
DEFINE_SVC_UUID2(stm32_sip_svc_uid,
0xa778aa50, 0xf49b, 0x144a, 0x8a, 0x5e,
0x26, 0x4d, 0x59, 0x94, 0xc2, 0x14);
/* Setup STM32MP1 Standard Services */
static int32_t stm32mp1_svc_setup(void)
{
/*
* PSCI is the only specification implemented as a Standard Service.
* Invoke PSCI setup from here.
*/
return 0;
}
/*
* Top-level Standard Service SMC handler. This handler will in turn dispatch
* calls to PSCI SMC handler.
*/
static uintptr_t stm32mp1_svc_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)
{
uint32_t ret1 = 0U, ret2 = 0U;
bool ret_uid = false, ret2_enabled = false;
switch (smc_fid) {
case STM32_SIP_SVC_CALL_COUNT:
ret1 = STM32_COMMON_SIP_NUM_CALLS;
break;
case STM32_SIP_SVC_UID:
/* Return UUID to the caller */
ret_uid = true;
break;
case STM32_SIP_SVC_VERSION:
/* Return the version of current implementation */
ret1 = STM32_SIP_SVC_VERSION_MAJOR;
ret2 = STM32_SIP_SVC_VERSION_MINOR;
ret2_enabled = true;
break;
default:
WARN("Unimplemented STM32MP1 Service Call: 0x%x\n", smc_fid);
ret1 = SMC_UNK;
break;
}
if (ret_uid) {
SMC_UUID_RET(handle, stm32_sip_svc_uid);
}
if (ret2_enabled) {
SMC_RET2(handle, ret1, ret2);
}
SMC_RET1(handle, ret1);
}
/* Register Standard Service Calls as runtime service */
DECLARE_RT_SVC(stm32mp1_sip_svc,
OEN_SIP_START,
OEN_SIP_END,
SMC_TYPE_FAST,
stm32mp1_svc_setup,
stm32mp1_svc_smc_handler
);

5
plat/st/stm32mp1/sp_min/sp_min-stm32mp1.mk
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@ -1,5 +1,5 @@
#
# Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
# Copyright (c) 2017-2019, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
@ -19,3 +19,6 @@ BL32_SOURCES += drivers/arm/gic/common/gic_common.c \
# Generic PSCI
BL32_SOURCES += plat/common/plat_psci_common.c
# stm32mp1 specific services
BL32_SOURCES += plat/st/stm32mp1/services/stm32mp1_svc_setup.c