217 lines
7.0 KiB
C
217 lines
7.0 KiB
C
/*----------------------------------------------------------------------------
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* RL-ARM - RTX
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*----------------------------------------------------------------------------
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* Name: RT_HAL_CM.H
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* Purpose: Hardware Abstraction Layer for Cortex-M definitions
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* Rev.: V4.60
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*----------------------------------------------------------------------------
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*
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* Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
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* All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*---------------------------------------------------------------------------*/
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#include "cmsis.h"
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/* Definitions */
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#define INITIAL_xPSR 0x10000000
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#define DEMCR_TRCENA 0x01000000
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#define ITM_ITMENA 0x00000001
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#define MAGIC_WORD 0xE25A2EA5
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#define SYS_TICK_IRQn TIMER0_IRQn
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extern void rt_set_PSP (U32 stack);
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extern U32 rt_get_PSP (void);
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extern void os_set_env (void);
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extern void SysTick_Handler (void);
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extern void *_alloc_box (void *box_mem);
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extern int _free_box (void *box_mem, void *box);
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extern void rt_init_stack (P_TCB p_TCB, FUNCP task_body);
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extern void rt_ret_val (P_TCB p_TCB, U32 v0);
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extern void rt_ret_val2 (P_TCB p_TCB, U32 v0, U32 v1);
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extern void dbg_init (void);
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extern void dbg_task_notify (P_TCB p_tcb, BOOL create);
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extern void dbg_task_switch (U32 task_id);
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#if defined (__CC_ARM) /* ARM Compiler */
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#if ((__TARGET_ARCH_7_M || __TARGET_ARCH_7E_M) && !NO_EXCLUSIVE_ACCESS)
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#define __USE_EXCLUSIVE_ACCESS
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#else
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#undef __USE_EXCLUSIVE_ACCESS
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#endif
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#elif defined (__GNUC__) /* GNU Compiler */
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#undef __USE_EXCLUSIVE_ACCESS
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#if defined (__CORTEX_M0) || defined (__CORTEX_M0PLUS)
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#define __TARGET_ARCH_6S_M 1
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#else
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#define __TARGET_ARCH_6S_M 0
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#endif
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#if defined (__VFP_FP__) && !defined(__SOFTFP__)
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#define __TARGET_FPU_VFP 1
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#else
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#define __TARGET_FPU_VFP 0
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#endif
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#define __inline inline
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#define __weak __attribute__((weak))
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#elif defined (__ICCARM__) /* IAR Compiler */
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#undef __USE_EXCLUSIVE_ACCESS
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#if (__CORE__ == __ARM6M__)
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#define __TARGET_ARCH_6S_M 1
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#else
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#define __TARGET_ARCH_6S_M 0
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#endif
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#if defined __ARMVFP__
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#define __TARGET_FPU_VFP 1
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#else
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#define __TARGET_FPU_VFP 0
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#endif
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#define __inline inline
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#endif
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/* NVIC registers */
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#define OS_PEND_IRQ() NVIC_PendIRQ(SYS_TICK_IRQn)
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#define OS_PENDING NVIC_PendingIRQ(SYS_TICK_IRQn)
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#define OS_UNPEND(fl) NVIC_UnpendIRQ(SYS_TICK_IRQn)
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#define OS_PEND(fl,p) NVIC_PendIRQ(SYS_TICK_IRQn)
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#define OS_LOCK() NVIC_DisableIRQ(SYS_TICK_IRQn)
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#define OS_UNLOCK() NVIC_EnableIRQ(SYS_TICK_IRQn)
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#define OS_X_PENDING NVIC_PendingIRQ(SYS_TICK_IRQn)
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#define OS_X_UNPEND(fl) NVIC_UnpendIRQ(SYS_TICK_IRQn)
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#define OS_X_PEND(fl,p) NVIC_PendIRQ(SYS_TICK_IRQn)
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#define OS_X_INIT(n) NVIC_EnableIRQ(n)
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#define OS_X_LOCK(n) NVIC_DisableIRQ(n)
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#define OS_X_UNLOCK(n) NVIC_EnableIRQ(n)
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/* Variables */
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extern BIT dbg_msg;
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/* Functions */
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#ifdef __USE_EXCLUSIVE_ACCESS
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#define rt_inc(p) while(__strex((__ldrex(p)+1),p))
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#define rt_dec(p) while(__strex((__ldrex(p)-1),p))
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#else
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#define rt_inc(p) __disable_irq();(*p)++;__enable_irq();
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#define rt_dec(p) __disable_irq();(*p)--;__enable_irq();
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#endif
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__inline static U32 rt_inc_qi (U32 size, U8 *count, U8 *first) {
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U32 cnt,c2;
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#ifdef __USE_EXCLUSIVE_ACCESS
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do {
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if ((cnt = __ldrex(count)) == size) {
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__clrex();
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return (cnt); }
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} while (__strex(cnt+1, count));
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do {
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c2 = (cnt = __ldrex(first)) + 1;
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if (c2 == size) c2 = 0;
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} while (__strex(c2, first));
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#else
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__disable_irq();
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if ((cnt = *count) < size) {
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*count = cnt+1;
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c2 = (cnt = *first) + 1;
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if (c2 == size) c2 = 0;
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*first = c2;
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}
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__enable_irq ();
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#endif
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return (cnt);
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}
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__inline static void rt_systick_init (void) {
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#if SYS_TICK_IRQn == TIMER0_IRQn
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#define SYS_TICK_TIMER LPC_TIM0
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LPC_SC->PCONP |= (1 << PCTIM0);
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LPC_SC->PCLKSEL0 = (LPC_SC->PCLKSEL0 & (~(1<<3))) | (1<<2); //PCLK == CPUCLK
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#elif SYS_TICK_IRQn == TIMER1_IRQn
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#define SYS_TICK_TIMER LPC_TIM1
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LPC_SC->PCONP |= (1 << PCTIM1);
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LPC_SC->PCLKSEL0 = (LPC_SC->PCLKSEL0 & (~(1<<5))) | (1<<4); //PCLK == CPUCLK
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#elif SYS_TICK_IRQn == TIMER2_IRQn
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#define SYS_TICK_TIMER LPC_TIM2
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LPC_SC->PCONP |= (1 << PCTIM2);
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LPC_SC->PCLKSEL1 = (LPC_SC->PCLKSEL1 & (~(1<<13))) | (1<<12); //PCLK == CPUCLK
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#else
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#define SYS_TICK_TIMER LPC_TIM3
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LPC_SC->PCONP |= (1 << PCTIM3);
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LPC_SC->PCLKSEL1 = (LPC_SC->PCLKSEL1 & (~(1<<15))) | (1<<14); //PCLK == CPUCLK
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#endif
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// setup Timer to count forever
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//interrupt_reg
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SYS_TICK_TIMER->TCR = 2; // reset & disable timer 0
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SYS_TICK_TIMER->TC = os_trv;
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SYS_TICK_TIMER->PR = 0; // set the prescale divider
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//Reset of TC and Interrupt when MR3 MR2 matches TC
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SYS_TICK_TIMER->MCR = (1 << 9) |(1 << 10); //TMCR_MR3_R_Msk | TMCR_MR3_I_Msk
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SYS_TICK_TIMER->MR3 = os_trv; // match registers
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SYS_TICK_TIMER->CCR = 0; // disable compare registers
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SYS_TICK_TIMER->EMR = 0; // disable external match register
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// initialize the interrupt vector
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NVIC_SetVector(SYS_TICK_IRQn, (uint32_t)&SysTick_Handler);
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SYS_TICK_TIMER->TCR = 1; // enable timer 0
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}
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__inline static void rt_svc_init (void) {
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// TODO: add svcInit
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}
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#ifdef DBG_MSG
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#define DBG_INIT() dbg_init()
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#define DBG_TASK_NOTIFY(p_tcb,create) if (dbg_msg) dbg_task_notify(p_tcb,create)
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#define DBG_TASK_SWITCH(task_id) if (dbg_msg && (os_tsk.new_tsk != os_tsk.run)) \
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dbg_task_switch(task_id)
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#else
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#define DBG_INIT()
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#define DBG_TASK_NOTIFY(p_tcb,create)
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#define DBG_TASK_SWITCH(task_id)
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#endif
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/*----------------------------------------------------------------------------
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* end of file
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*---------------------------------------------------------------------------*/
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