289 lines
9.1 KiB
C
289 lines
9.1 KiB
C
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/*
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ChibiOS - Copyright (C) 2006..2018 Isidoro Orabona.
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This file is part of ChibiOS.
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ChibiOS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file chtssi.h
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* @brief tssi module macros and structures.
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*
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* @addtogroup TSSI
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* @{
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*/
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#ifndef CHTSSI_H
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#define CHTSSI_H
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#include "ch.h"
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#include "ccportab.h"
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/*===========================================================================*/
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/* Module constants. */
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/*===========================================================================*/
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/* TSSI interface version. This code is returned also at run time by
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calling the internal service TS_HND_VERSION.*/
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#define TSSI_VERSION 0x01000000 /* 00 major, 000 minor, 000 build.*/
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/* Service registry errors as returned by smc.*/
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#define SMC_SVC_OK (int32_t)0 /* No error.*/
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#define SMC_SVC_INTR (int32_t)-4 /* Service interrupted.*/
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#define SMC_SVC_NOENT (int32_t)-2 /* No existent service.*/
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#define SMC_SVC_INVALID (int32_t)-22 /* Invalid service
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parameter(s).*/
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#define SMC_SVC_BADH (int32_t)-9 /* Invalid service handle.*/
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#define SMC_SVC_EXIST (int32_t)-17 /* Service already exists.*/
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#define SMC_SVC_NHND (int32_t)-23 /* No more services or
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service resources.*/
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#define SMC_SVC_BUSY (int32_t)-16 /* Service busy.*/
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/* Special trusted service handles.*/
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#define TS_HND_TRAMP ((ts_state_t *)0) /* Trampoline service handle.*/
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#define TS_HND_DISCOVERY ((ts_state_t *)1) /* Discovery service handle.*/
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#define TS_HND_STQRY ((ts_state_t *)2) /* Query status service handle.*/
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#define TS_HND_IDLE ((ts_state_t *)3) /* Idle service handle.*/
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#define TS_HND_VERSION ((ts_state_t *)4) /* Get version service handle.*/
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/* Fast call service bitmask.
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Service handles that contain this mask access to
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the fast call table.*/
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#define TS_FASTCALL_MASK 0xFFFF0000
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/* Services events event mask.*/
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#define EVT_DAEMON_REQ_ATN EVENT_MASK(0)
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/*===========================================================================*/
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/* Module pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @name TSSI module settings.
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* @{
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*/
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/**
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* @brief Max number of services.
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*/
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#define TS_MAX_SVCS 64
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/**
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* @brief Max smc call timeout, in microseconds.
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*/
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#define TS_MAX_TMO 10000
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/**
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* @brief Secure and non secure memory address spaces.
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*/
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#if !defined(NSEC_MEMORY_START_ADDR)
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#define NSEC_MEMORY_START_ADDR ((uint8_t *)0x20000000)
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#endif
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#if !defined(NSEC_MEMORY_EXE_OFFSET)
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#define NSEC_MEMORY_EXE_OFFSET ((uint32_t) 0x00000000)
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#endif
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#if !defined(NSEC_MEMORY_END_ADDR)
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#define NSEC_MEMORY_END_ADDR ((uint8_t *)0x27000000)
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#endif
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#if !defined(SEC_MEMORY_START_ADDR)
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#define SEC_MEMORY_START_ADDR ((uint8_t *)0x27000000)
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#endif
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#if !defined(SEC_MEMORY_SIZE)
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#define SEC_MEMORY_SIZE ((size_t)0x1000000)
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#endif
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/** @} */
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module data structures and types. */
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/*===========================================================================*/
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typedef uint8_t * ts_params_area_t;
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typedef struct tssi_service_state {
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uint32_t ts_status;
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thread_reference_t ts_thdp;
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ts_params_area_t ts_datap;
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uint32_t ts_datalen;
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} ts_state_t;
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/**
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* @brief Fast call function.
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*/
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typedef msg_t (*fcfunc_t)(ts_params_area_t ts_datap, uint32_t ts_datalen);
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/**
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* @brief Type of a fast call descriptor.
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*/
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typedef struct {
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/**
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* @brief Fast call service name.
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*/
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const char *name;
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/* The code identifying the service.
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Used for checking purpose, it must correspond to the
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order that the service lists in the descriptor table.*/
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uint32_t code;
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/**
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* @brief Fast call function pointer.
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*/
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fcfunc_t funcp;
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} fc_descriptor_t;
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/*===========================================================================*/
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/* Module macros. */
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/*===========================================================================*/
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/**
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* @name Services tables definition macros.
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* @{
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*/
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/**
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* @brief Table of the runtime state of the services.
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*/
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#define TS_STATE_TABLE \
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ts_state_t ts_state[TS_MAX_SVCS] = {0};
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/**
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* @brief Accessor to the runtime state of service i.
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*/
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#define TS_STATE(i) (&ts_state[i])
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/**
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* @brief Start of user service table.
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*/
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#define TS_CONF_TABLE_BEGIN \
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const thread_descriptor_t ts_configs[TS_MAX_SVCS] = {
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/**
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* @brief Entry of user services table.
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*/
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#define TS_CONF_TABLE_ENTRY(name, wap, prio, funcp, tsstatep) \
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{name, wap, ((stkalign_t *)(wap)) + (sizeof (wap) / sizeof(stkalign_t)), \
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prio, funcp, tsstatep},
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/**
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* @brief End of user services table.
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*/
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#define TS_CONF_TABLE_END \
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};
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/**
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* @brief Accessor to the service table entry i.
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*/
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#define TS_CONF_TABLE(i) (&ts_configs[i])
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/**
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* @brief Trusted services base prio.
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*/
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#define TS_BASE_PRIO (NORMALPRIO+1)
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/**
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* @brief Set the service status.
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* @note The service sets the status at a value representing the status
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* of the completion of the request. This value is
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* service dependent.
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*/
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#define TS_SET_STATUS(svcp, newst) (((ts_state_t *)svcp)->ts_status = newst)
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/**
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* @brief Get the pointer to the client shared memory.
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* @note The client sets the data field at the start address
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* of a shared memory allocated from the non secure memory space.
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*/
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#define TS_GET_DATA(svcp) ((char *)((ts_state_t *)svcp)->ts_datap)
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/**
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* @brief Get the size of the client shared memory.
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* @note The client sets the datalen field to the size
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* of a shared memory allocated from the non secure memory space.
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*/
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#define TS_GET_DATALEN(svcp) (((ts_state_t *)svcp)->ts_datalen)
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/** @} */
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/**
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* @name Fast call table definition macros.
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* @note Fast call services run at max priority level, so it is
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* mandatory that they last less time as possible.
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* @note Fast call services should be invoked using
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* the tsInvoke0 function in order to optimize the
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* performances.
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* @note Fast call services don't have a runtime state, so
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* the response management is in charge to the higher levels.
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* @{
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*/
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/**
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* @brief Start of user fast call service table.
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*/
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#define TS_FC_CONF_TABLE_BEGIN \
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const fc_descriptor_t ts_fc_configs[] = {
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/**
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* @brief Entry of user fast call services table.
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*/
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#define TS_FC_CONF_TABLE_ENTRY(name, code, funcp) \
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{name, code, funcp},
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/**
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* @brief End of user fast call services table.
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*/
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#define TS_FC_CONF_TABLE_END \
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};
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/**
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* @brief Accessor to the fast call service table entry i.
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*/
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#define TS_FC_CONF_TABLE(i) (&ts_fc_configs[i])
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/**
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* @brief Number of entries in the fast call service table.
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*/
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#define TS_FC_CONF_TABLE_N (sizeof ts_fc_configs / sizeof ts_fc_configs[0])
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/** @} */
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern event_source_t tsEventSource;
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extern ts_state_t ts_state[];
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extern const thread_descriptor_t ts_configs[];
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extern thread_reference_t _ns_thread;
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CC_NO_RETURN void _ns_trampoline(uint8_t *addr);
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CC_NO_RETURN void tssiInit(void);
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msg_t tssiWaitRequest(ts_state_t *svcp);
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bool tsIsAddrSpaceValid(void *addr, size_t size);
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#ifdef __cplusplus
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}
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#endif
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/*===========================================================================*/
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/* Module inline functions. */
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/*===========================================================================*/
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#endif /* CHTSSI_H */
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