380 lines
11 KiB
C
380 lines
11 KiB
C
/*
|
|
ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio.
|
|
|
|
This file is part of ChibiOS.
|
|
|
|
ChibiOS is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
ChibiOS is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/**
|
|
* @file templates/nilcore.h
|
|
* @brief Port macros and structures.
|
|
*
|
|
* @addtogroup NIL_CORE
|
|
* @{
|
|
*/
|
|
|
|
#ifndef _NILCORE_H_
|
|
#define _NILCORE_H_
|
|
|
|
/*===========================================================================*/
|
|
/* Module constants. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @name Architecture and Compiler
|
|
* @{
|
|
*/
|
|
/**
|
|
* @brief Macro defining the port architecture.
|
|
*/
|
|
#define PORT_ARCHITECTURE_XXX
|
|
|
|
/**
|
|
* @brief Name of the implemented architecture.
|
|
*/
|
|
#define PORT_ARCHITECTURE_NAME "XXX"
|
|
|
|
/**
|
|
* @brief Name of the architecture variant.
|
|
*/
|
|
#define PORT_CORE_VARIANT_NAME "XXXX-Y"
|
|
|
|
/**
|
|
* @brief Compiler name and version.
|
|
*/
|
|
#if defined(__GNUC__) || defined(__DOXYGEN__)
|
|
#define PORT_COMPILER_NAME "GCC " __VERSION__
|
|
|
|
#else
|
|
#error "unsupported compiler"
|
|
#endif
|
|
|
|
/**
|
|
* @brief Port-specific information string.
|
|
*/
|
|
#define PORT_INFO "port description"
|
|
|
|
/**
|
|
* @brief This port supports a realtime counter.
|
|
*/
|
|
#define PORT_SUPPORTS_RT FALSE
|
|
/** @} */
|
|
|
|
/*===========================================================================*/
|
|
/* Module pre-compile time settings. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Per-thread stack overhead for interrupts servicing.
|
|
* @details This constant is used in the calculation of the correct working
|
|
* area size.
|
|
*/
|
|
#if !defined(PORT_INT_REQUIRED_STACK) || defined(__DOXYGEN__)
|
|
#define PORT_INT_REQUIRED_STACK 32
|
|
#endif
|
|
|
|
/**
|
|
* @brief Enables an alternative timer implementation.
|
|
* @details Usually the port uses a timer interface defined in the file
|
|
* @p nilcore_timer.h, if this option is enabled then the file
|
|
* @p nilcore_timer_alt.h is included instead.
|
|
*/
|
|
#if !defined(PORT_USE_ALT_TIMER)
|
|
#define PORT_USE_ALT_TIMER FALSE
|
|
#endif
|
|
|
|
/*===========================================================================*/
|
|
/* Derived constants and error checks. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Module data structures and types. */
|
|
/*===========================================================================*/
|
|
|
|
/* The following code is not processed when the file is included from an
|
|
asm module.*/
|
|
#if !defined(_FROM_ASM_)
|
|
|
|
/**
|
|
* @brief Type of stack and memory alignment enforcement.
|
|
*/
|
|
typedef uint64_t stkalign_t;
|
|
|
|
/**
|
|
* @brief Interrupt saved context.
|
|
* @details This structure represents the stack frame saved during a
|
|
* preemption-capable interrupt handler.
|
|
*/
|
|
struct port_extctx {
|
|
uint32_t reg1;
|
|
uint32_t reg2;
|
|
};
|
|
|
|
/**
|
|
* @brief System saved context.
|
|
* @details This structure represents the inner stack frame during a context
|
|
* switch.
|
|
*/
|
|
struct port_intctx {
|
|
uint32_t reg3;
|
|
uint32_t reg4;
|
|
};
|
|
|
|
#endif /* !defined(_FROM_ASM_) */
|
|
|
|
/*===========================================================================*/
|
|
/* Module macros. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Platform dependent thread stack setup.
|
|
* @details This code usually setup the context switching frame represented
|
|
* by an @p port_intctx structure.
|
|
*/
|
|
#define PORT_SETUP_CONTEXT(tp, wend, pf, arg) do { \
|
|
(void)(tp); \
|
|
(void)(wend); \
|
|
(void)(pf); \
|
|
(void)(arg); \
|
|
} while (false)
|
|
|
|
/**
|
|
* @brief Computes the thread working area global size.
|
|
* @note There is no need to perform alignments in this macro.
|
|
*/
|
|
#define PORT_WA_SIZE(n) (sizeof(struct port_intctx) + \
|
|
sizeof(struct port_extctx) + \
|
|
(size_t)(n) + \
|
|
(size_t)(PORT_INT_REQUIRED_STACK))
|
|
|
|
/**
|
|
* @brief Priority level verification macro.
|
|
*/
|
|
#define PORT_IRQ_IS_VALID_PRIORITY(n) false
|
|
|
|
/**
|
|
* @brief Priority level verification macro.
|
|
*/
|
|
#define PORT_IRQ_IS_VALID_KERNEL_PRIORITY(n) false
|
|
|
|
/**
|
|
* @brief IRQ prologue code.
|
|
* @details This macro must be inserted at the start of all IRQ handlers
|
|
* enabled to invoke system APIs.
|
|
*/
|
|
#define PORT_IRQ_PROLOGUE()
|
|
|
|
/**
|
|
* @brief IRQ epilogue code.
|
|
* @details This macro must be inserted at the end of all IRQ handlers
|
|
* enabled to invoke system APIs.
|
|
*/
|
|
#define PORT_IRQ_EPILOGUE() _port_irq_epilogue()
|
|
|
|
/**
|
|
* @brief IRQ handler function declaration.
|
|
* @note @p id can be a function name or a vector number depending on the
|
|
* port implementation.
|
|
*/
|
|
#define PORT_IRQ_HANDLER(id) void id(void)
|
|
|
|
/**
|
|
* @brief Fast IRQ handler function declaration.
|
|
* @note @p id can be a function name or a vector number depending on the
|
|
* port implementation.
|
|
*/
|
|
#define PORT_FAST_IRQ_HANDLER(id) void id(void)
|
|
|
|
/**
|
|
* @brief Performs a context switch between two threads.
|
|
* @details This is the most critical code in any port, this function
|
|
* is responsible for the context switch between 2 threads.
|
|
* @note The implementation of this code affects <b>directly</b> the context
|
|
* switch performance so optimize here as much as you can.
|
|
*
|
|
* @param[in] ntp the thread to be switched in
|
|
* @param[in] otp the thread to be switched out
|
|
*/
|
|
#define port_switch(ntp, otp) do { \
|
|
(void)ntp; \
|
|
(void)otp; \
|
|
/*_port_switch(ntp, otp)*/ \
|
|
} while (false)
|
|
|
|
/*===========================================================================*/
|
|
/* External declarations. */
|
|
/*===========================================================================*/
|
|
|
|
/* The following code is not processed when the file is included from an
|
|
asm module.*/
|
|
#if !defined(_FROM_ASM_)
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
void _port_irq_epilogue(void);
|
|
void _port_switch(thread_t *ntp, thread_t *otp);
|
|
void _port_thread_start(void);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* !defined(_FROM_ASM_) */
|
|
|
|
/*===========================================================================*/
|
|
/* Module inline functions. */
|
|
/*===========================================================================*/
|
|
|
|
/* The following code is not processed when the file is included from an
|
|
asm module.*/
|
|
#if !defined(_FROM_ASM_)
|
|
|
|
/**
|
|
* @brief Port-related initialization code.
|
|
*/
|
|
static inline void port_init(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Returns a word encoding the current interrupts status.
|
|
*
|
|
* @return The interrupts status.
|
|
*/
|
|
static inline syssts_t port_get_irq_status(void) {
|
|
|
|
return (syssts_t)0;
|
|
}
|
|
|
|
/**
|
|
* @brief Checks the interrupt status.
|
|
*
|
|
* @param[in] sts the interrupt status word
|
|
*
|
|
* @return The interrupt status.
|
|
* @retval false the word specified a disabled interrupts status.
|
|
* @retval true the word specified an enabled interrupts status.
|
|
*/
|
|
static inline bool port_irq_enabled(syssts_t sts) {
|
|
|
|
(void)sts;
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @brief Determines the current execution context.
|
|
*
|
|
* @return The execution context.
|
|
* @retval false not running in ISR mode.
|
|
* @retval true running in ISR mode.
|
|
*/
|
|
static inline bool port_is_isr_context(void) {
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @brief Kernel-lock action.
|
|
*/
|
|
static inline void port_lock(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Kernel-unlock action.
|
|
*/
|
|
static inline void port_unlock(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Kernel-lock action from an interrupt handler.
|
|
*/
|
|
static inline void port_lock_from_isr(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Kernel-unlock action from an interrupt handler.
|
|
*/
|
|
static inline void port_unlock_from_isr(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Disables all the interrupt sources.
|
|
*/
|
|
static inline void port_disable(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Disables the interrupt sources below kernel-level priority.
|
|
*/
|
|
static inline void port_suspend(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Enables all the interrupt sources.
|
|
*/
|
|
static inline void port_enable(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Enters an architecture-dependent IRQ-waiting mode.
|
|
* @details The function is meant to return when an interrupt becomes pending.
|
|
* The simplest implementation is an empty function or macro but this
|
|
* would not take advantage of architecture-specific power saving
|
|
* modes.
|
|
*/
|
|
static inline void port_wait_for_interrupt(void) {
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the current value of the realtime counter.
|
|
*
|
|
* @return The realtime counter value.
|
|
*/
|
|
static inline rtcnt_t port_rt_get_counter_value(void) {
|
|
|
|
return (rtcnt_t)0;
|
|
}
|
|
|
|
#endif /* !defined(_FROM_ASM_) */
|
|
|
|
/*===========================================================================*/
|
|
/* Module late inclusions. */
|
|
/*===========================================================================*/
|
|
|
|
#if !defined(_FROM_ASM_)
|
|
|
|
#if NIL_CFG_ST_TIMEDELTA > 0
|
|
#if PORT_USE_ALT_TIMER == FALSE
|
|
#include "nilcore_timer.h"
|
|
#else
|
|
#include "nilcore_timer_alt.h"
|
|
#endif
|
|
#endif /* NIL_CFG_ST_TIMEDELTA > 0 */
|
|
|
|
#endif /* !defined(_FROM_ASM_) */
|
|
|
|
#endif /* _NILCORE_H_ */
|
|
|
|
/** @} */
|