mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
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fdaaaeb431
This change implements platform services for stm32mp1 to expose clock and reset controllers over SCMI clock and reset domain protocols in sp_min firmware. Requests execution use a fastcall SMC context using a SiP function ID. The setup allows the create SCMI channels by assigning a specific SiP SMC function ID for each channel/agent identifier defined. In this change, stm32mp1 exposes a single channel and hence expects single agent at a time. The input payload in copied in secure memory before the message in passed through the SCMI server drivers. BL32/sp_min is invoked for a single SCMI message processing and always returns with a synchronous response message passed back to the caller agent. This change fixes and updates STM32_COMMON_SIP_NUM_CALLS that was previously wrongly set 4 whereas only 1 SiP SMC function ID was to be counted. STM32_COMMON_SIP_NUM_CALLS is now set to 3 since the 2 added SiP SMC function IDs for SCMI services. Change-Id: Icb428775856b9aec00538172aea4cf11e609b033 Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
101 lines
2.2 KiB
C
101 lines
2.2 KiB
C
/*
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* Copyright (c) 2014-2019, STMicroelectronics - All Rights Reserved
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <common/debug.h>
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#include <common/runtime_svc.h>
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#include <drivers/st/scmi-msg.h>
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#include <lib/psci/psci.h>
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#include <tools_share/uuid.h>
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#include <stm32mp1_smc.h>
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#include "bsec_svc.h"
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/* STM32 SiP Service UUID */
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DEFINE_SVC_UUID2(stm32_sip_svc_uid,
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0xa778aa50, 0xf49b, 0x144a, 0x8a, 0x5e,
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0x26, 0x4d, 0x59, 0x94, 0xc2, 0x14);
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/* Setup STM32MP1 Standard Services */
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static int32_t stm32mp1_svc_setup(void)
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{
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/*
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* PSCI is the only specification implemented as a Standard Service.
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* Invoke PSCI setup from here.
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*/
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return 0;
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}
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/*
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* Top-level Standard Service SMC handler. This handler will in turn dispatch
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* calls to PSCI SMC handler.
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*/
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static uintptr_t stm32mp1_svc_smc_handler(uint32_t smc_fid, u_register_t x1,
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u_register_t x2, u_register_t x3,
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u_register_t x4, void *cookie,
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void *handle, u_register_t flags)
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{
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uint32_t ret1 = 0U, ret2 = 0U;
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bool ret_uid = false, ret2_enabled = false;
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switch (smc_fid) {
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case STM32_SIP_SVC_CALL_COUNT:
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ret1 = STM32_COMMON_SIP_NUM_CALLS;
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break;
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case STM32_SIP_SVC_UID:
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/* Return UUID to the caller */
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ret_uid = true;
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break;
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case STM32_SIP_SVC_VERSION:
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/* Return the version of current implementation */
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ret1 = STM32_SIP_SVC_VERSION_MAJOR;
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ret2 = STM32_SIP_SVC_VERSION_MINOR;
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ret2_enabled = true;
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break;
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case STM32_SMC_BSEC:
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ret1 = bsec_main(x1, x2, x3, &ret2);
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ret2_enabled = true;
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break;
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case STM32_SIP_SMC_SCMI_AGENT0:
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scmi_smt_fastcall_smc_entry(0);
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break;
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case STM32_SIP_SMC_SCMI_AGENT1:
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scmi_smt_fastcall_smc_entry(1);
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break;
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default:
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WARN("Unimplemented STM32MP1 Service Call: 0x%x\n", smc_fid);
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ret1 = SMC_UNK;
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break;
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}
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if (ret_uid) {
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SMC_UUID_RET(handle, stm32_sip_svc_uid);
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}
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if (ret2_enabled) {
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SMC_RET2(handle, ret1, ret2);
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}
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SMC_RET1(handle, ret1);
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}
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/* Register Standard Service Calls as runtime service */
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DECLARE_RT_SVC(stm32mp1_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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stm32mp1_svc_setup,
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stm32mp1_svc_smc_handler
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);
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