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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012,2013 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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/RT 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 ARMCMx/chcore.h
* @brief ARM Cortex-Mx port macros and structures.
*
* @addtogroup ARMCMx_CORE
* @{
*/
#ifndef _CHCORE_H_
#define _CHCORE_H_
/*===========================================================================*/
/* Module constants. */
/*===========================================================================*/
/**
* @name Architecture and Compiler
* @{
*/
/**
* @brief Macro defining a generic ARM architecture.
*/
#define PORT_ARCHITECTURE_ARM
/**
* @brief Compiler name and version.
*/
#if defined(__GNUC__) || defined(__DOXYGEN__)
#define PORT_COMPILER_NAME "GCC " __VERSION__
#elif defined(__ICCARM__)
#define PORT_COMPILER_NAME "IAR"
#elif defined(__CC_ARM)
#define PORT_COMPILER_NAME "RVCT"
#else
#error "unsupported compiler"
#endif
/** @} */
/**
* @name Cortex-M variants
* @{
*/
#define CORTEX_M0 0 /**< @brief Cortex-M0 variant. */
#define CORTEX_M0PLUS 1 /**< @brief Cortex-M0+ variant. */
#define CORTEX_M1 2 /**< @brief Cortex-M1 variant. */
#define CORTEX_M3 3 /**< @brief Cortex-M3 variant. */
#define CORTEX_M4 4 /**< @brief Cortex-M4 variant. */
/** @} */
/* Inclusion of the Cortex-Mx implementation specific parameters.*/
#include "cmparams.h"
/*===========================================================================*/
/* Module pre-compile time settings. */
/*===========================================================================*/
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/* The following code is not processed when the file is included from an
asm module.*/
#if !defined(_FROM_ASM_)
/*
* Inclusion of the appropriate CMSIS header for the selected device.
*/
#if CORTEX_MODEL == CORTEX_M0
#include "core_cm0.h"
#elif CORTEX_MODEL == CORTEX_M0PLUS
#include "core_cm0plus.h"
#elif CORTEX_MODEL == CORTEX_M3
#include "core_cm3.h"
#elif CORTEX_MODEL == CORTEX_M4
#include "core_cm4.h"
#else
#error "unknown or unsupported Cortex-M model"
#endif
#endif /* !defined(_FROM_ASM_) */
/*===========================================================================*/
/* 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 system time.
*/
#if (CH_CFG_ST_RESOLUTION == 32) || defined(__DOXYGEN__)
typedef uint32_t systime_t;
#else
typedef uint16_t systime_t;
#endif
/**
* @brief Type of a generic ARM register.
*/
typedef void *regarm_t;
/**
* @brief Type of stack and memory alignment enforcement.
* @note In this architecture the stack alignment is enforced to 64 bits,
* 32 bits alignment is supported by hardware but deprecated by ARM,
* the implementation choice is to not offer the option.
*/
typedef uint64_t stkalign_t;
/* The following declarations are there just for Doxygen documentation, the
real declarations are inside the sub-headers being specific for the
sub-architectures.*/
#if defined(__DOXYGEN__)
/**
* @brief Interrupt saved context.
* @details This structure represents the stack frame saved during a
* preemption-capable interrupt handler.
* @note It is implemented to match the Cortex-Mx exception context.
*/
struct port_extctx {};
/**
* @brief System saved context.
* @details This structure represents the inner stack frame during a context
* switching.
*/
struct port_intctx {};
#endif /* defined(__DOXYGEN__) */
/**
* @brief Platform dependent part of the @p thread_t structure.
* @details In this port the structure just holds a pointer to the
* @p port_intctx structure representing the stack pointer
* at context switch time.
*/
struct context {
struct port_intctx *r13;
};
#endif /* !defined(_FROM_ASM_) */
/*===========================================================================*/
/* Module macros. */
/*===========================================================================*/
/**
* @brief Total priority levels.
*/
#define CORTEX_PRIORITY_LEVELS (1 << CORTEX_PRIORITY_BITS)
/**
* @brief Minimum priority level.
* @details This minimum priority level is calculated from the number of
* priority bits supported by the specific Cortex-Mx implementation.
*/
#define CORTEX_MINIMUM_PRIORITY (CORTEX_PRIORITY_LEVELS - 1)
/**
* @brief Maximum priority level.
* @details The maximum allowed priority level is always zero.
*/
#define CORTEX_MAXIMUM_PRIORITY 0
/**
* @brief Priority level verification macro.
*/
#define CORTEX_IS_VALID_PRIORITY(n) \
(((n) >= 0) && ((n) < CORTEX_PRIORITY_LEVELS))
/**
* @brief Priority level verification macro.
*/
#define CORTEX_IS_VALID_KERNEL_PRIORITY(n) \
(((n) >= CORTEX_MAX_KERNEL_PRIORITY) && ((n) < CORTEX_PRIORITY_LEVELS))
/**
* @brief Priority level to priority mask conversion macro.
*/
#define CORTEX_PRIO_MASK(n) \
((n) << (8 - CORTEX_PRIORITY_BITS))
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
/*===========================================================================*/
/* Module inline functions. */
/*===========================================================================*/
/* Includes the sub-architecture-specific part.*/
#if (CORTEX_MODEL == CORTEX_M0) || (CORTEX_MODEL == CORTEX_M0PLUS) || \
(CORTEX_MODEL == CORTEX_M1)
#include "chcore_v6m.h"
#elif (CORTEX_MODEL == CORTEX_M3) || (CORTEX_MODEL == CORTEX_M4)
#include "chcore_v7m.h"
#endif
#if !defined(_FROM_ASM_)
#if CH_CFG_ST_TIMEDELTA > 0
#include "chcore_timer.h"
#endif
#endif /* !defined(_FROM_ASM_) */
#endif /* _CHCORE_H_ */
/** @} */
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