DAPLink/source/rtos/rt_HAL_CM.h
2016-03-09 18:32:34 -06:00

170 lines
5.4 KiB
C

/**
* @file rt_HAL_CM.h
* @brief
*
* DAPLink Interface Firmware
* Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* Definitions */
#define INITIAL_xPSR 0x01000000
#define DEMCR_TRCENA 0x01000000
#define ITM_ITMENA 0x00000001
#define MAGIC_WORD 0xE25A2EA5
// ARMCC has deprecated use for ldrex and strex functions
// from C so do not used them on any devices.
#if (0)
#define __USE_EXCLUSIVE_ACCESS
#else
#undef __USE_EXCLUSIVE_ACCESS
#endif
/* NVIC registers */
#define NVIC_ST_CTRL (*((volatile U32 *)0xE000E010))
#define NVIC_ST_RELOAD (*((volatile U32 *)0xE000E014))
#define NVIC_ST_CURRENT (*((volatile U32 *)0xE000E018))
#define NVIC_ISER ((volatile U32 *)0xE000E100)
#define NVIC_ICER ((volatile U32 *)0xE000E180)
#if (__TARGET_ARCH_6S_M)
#define NVIC_IP ((volatile U32 *)0xE000E400)
#else
#define NVIC_IP ((volatile U8 *)0xE000E400)
#endif
#define NVIC_INT_CTRL (*((volatile U32 *)0xE000ED04))
#define NVIC_AIR_CTRL (*((volatile U32 *)0xE000ED0C))
#define NVIC_SYS_PRI2 (*((volatile U32 *)0xE000ED1C))
#define NVIC_SYS_PRI3 (*((volatile U32 *)0xE000ED20))
#define OS_PEND_IRQ() NVIC_INT_CTRL = (1<<28)
#define OS_PENDING ((NVIC_INT_CTRL >> 26) & (1<<2 | 1))
#define OS_UNPEND(fl) NVIC_INT_CTRL = (*fl = OS_PENDING) << 25
#define OS_PEND(fl,p) NVIC_INT_CTRL = (fl | p<<2) << 26
#define OS_LOCK() NVIC_ST_CTRL = 0x0005
#define OS_UNLOCK() NVIC_ST_CTRL = 0x0007
#define OS_X_PENDING ((NVIC_INT_CTRL >> 28) & 1)
#define OS_X_UNPEND(fl) NVIC_INT_CTRL = (*fl = OS_X_PENDING) << 27
#define OS_X_PEND(fl,p) NVIC_INT_CTRL = (fl | p) << 28
#if (__TARGET_ARCH_6S_M)
#define OS_X_INIT(n) NVIC_IP[n>>2] |= 0xFF << (8*(n & 0x03)); \
NVIC_ISER[n>>5] = 1 << (n & 0x1F)
#else
#define OS_X_INIT(n) NVIC_IP[n] = 0xFF; \
NVIC_ISER[n>>5] = 1 << (n & 0x1F)
#endif
#define OS_X_LOCK(n) NVIC_ICER[n>>5] = 1 << (n & 0x1F)
#define OS_X_UNLOCK(n) NVIC_ISER[n>>5] = 1 << (n & 0x1F)
/* Core Debug registers */
#define DEMCR (*((volatile U32 *)0xE000EDFC))
/* ITM registers */
#define ITM_CONTROL (*((volatile U32 *)0xE0000E80))
#define ITM_ENABLE (*((volatile U32 *)0xE0000E00))
#define ITM_PORT30_U32 (*((volatile U32 *)0xE0000078))
#define ITM_PORT31_U32 (*((volatile U32 *)0xE000007C))
#define ITM_PORT31_U16 (*((volatile U16 *)0xE000007C))
#define ITM_PORT31_U8 (*((volatile U8 *)0xE000007C))
/* Variables */
extern BIT dbg_msg;
/* Functions */
#ifdef __USE_EXCLUSIVE_ACCESS
#define rt_inc(p) while(__strex((__ldrex(p)+1),p))
#define rt_dec(p) while(__strex((__ldrex(p)-1),p))
#else
#define rt_inc(p) __disable_irq();(*p)++;__enable_irq();
#define rt_dec(p) __disable_irq();(*p)--;__enable_irq();
#endif
static inline U32 rt_inc_qi (U32 size, U8 *count, U8 *first) {
U32 cnt,c2;
#ifdef __USE_EXCLUSIVE_ACCESS
do {
if ((cnt = __ldrex(count)) == size) {
__clrex();
return (cnt); }
} while (__strex(cnt+1, count));
do {
c2 = (cnt = __ldrex(first)) + 1;
if (c2 == size) c2 = 0;
} while (__strex(c2, first));
#else
__disable_irq();
if ((cnt = *count) < size) {
*count = cnt+1;
c2 = (cnt = *first) + 1;
if (c2 == size) c2 = 0;
*first = c2;
}
__enable_irq ();
#endif
return (cnt);
}
static inline void rt_systick_init (void) {
NVIC_ST_RELOAD = os_trv;
NVIC_ST_CURRENT = 0;
NVIC_ST_CTRL = 0x0007;
NVIC_SYS_PRI3 |= 0xFF000000;
}
static inline void rt_svc_init (void) {
#if !(__TARGET_ARCH_6S_M)
int sh,prigroup;
#endif
NVIC_SYS_PRI3 |= 0x00FF0000;
#if (__TARGET_ARCH_6S_M)
NVIC_SYS_PRI2 |= (NVIC_SYS_PRI3<<(8+1)) & 0xFC000000;
#else
sh = 8 - __clz (~((NVIC_SYS_PRI3 << 8) & 0xFF000000));
prigroup = ((NVIC_AIR_CTRL >> 8) & 0x07);
if (prigroup >= sh) {
sh = prigroup + 1;
}
NVIC_SYS_PRI2 = ((0xFEFFFFFF << sh) & 0xFF000000) | (NVIC_SYS_PRI2 & 0x00FFFFFF);
#endif
}
extern void rt_init_stack (P_TCB p_TCB, FUNCP task_body);
extern void rt_set_PSP (U32 stack);
extern U32 rt_get_PSP (void);
extern void os_set_env (void);
extern void *_alloc_box (void *box_mem);
extern int _free_box (void *box_mem, void *box);
extern void dbg_init (void);
extern void dbg_task_notify (P_TCB p_tcb, BOOL create);
extern void dbg_task_switch (U32 task_id);
#ifdef DBG_MSG
#define DBG_INIT() dbg_init()
#define DBG_TASK_NOTIFY(p_tcb,create) if (dbg_msg) dbg_task_notify(p_tcb,create)
#define DBG_TASK_SWITCH(task_id) if (dbg_msg && (os_tsk.new!=os_tsk.run)) \
dbg_task_switch(task_id)
#else
#define DBG_INIT()
#define DBG_TASK_NOTIFY(p_tcb,create)
#define DBG_TASK_SWITCH(task_id)
#endif
/*----------------------------------------------------------------------------
* end of file
*---------------------------------------------------------------------------*/