mbed official / mbed-rtos

Official mbed Real Time Operating System based on the RTX implementation of the CMSIS-RTOS API open standard.

Dependents:   denki-yohou_b TestY201 Network-RTOS NTPClient_HelloWorld ... more

Deprecated

This is the mbed 2 rtos library. mbed OS 5 integrates the mbed library with mbed-rtos. With this, we have provided thread safety for all mbed APIs. If you'd like to learn about using mbed OS 5, please see the docs.

rtx_ca/rt_HAL_CA.h@48:e9a2c7cb57a4, 2014-11-06 (annotated)

Committer:
mbed_official
Date:
Thu Nov 06 11:00:33 2014 +0000
Revision:
48:e9a2c7cb57a4
Synchronized with git revision 8724eb616b6e07a3bd111d3022652eb5bbefe9b7



Full URL: https://github.com/mbedmicro/mbed/commit/8724eb616b6e07a3bd111d3022652eb5bbefe9b7/



[RZ/A1H] mbed-RZ first release

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 48:e9a2c7cb57a4 1 /*----------------------------------------------------------------------------
mbed_official 48:e9a2c7cb57a4 2 * RL-ARM - RTX
mbed_official 48:e9a2c7cb57a4 3 *----------------------------------------------------------------------------
mbed_official 48:e9a2c7cb57a4 4 * Name: RT_HAL_CM.H
mbed_official 48:e9a2c7cb57a4 5 * Purpose: Hardware Abstraction Layer for Cortex-A definitions
mbed_official 48:e9a2c7cb57a4 6 * Rev.: 21 Aug 2013
mbed_official 48:e9a2c7cb57a4 7 *----------------------------------------------------------------------------
mbed_official 48:e9a2c7cb57a4 8 *
mbed_official 48:e9a2c7cb57a4 9 * Copyright (c) 1999-2009 KEIL, 2009-2013 ARM Germany GmbH
mbed_official 48:e9a2c7cb57a4 10 * All rights reserved.
mbed_official 48:e9a2c7cb57a4 11 * Redistribution and use in source and binary forms, with or without
mbed_official 48:e9a2c7cb57a4 12 * modification, are permitted provided that the following conditions are met:
mbed_official 48:e9a2c7cb57a4 13 * - Redistributions of source code must retain the above copyright
mbed_official 48:e9a2c7cb57a4 14 * notice, this list of conditions and the following disclaimer.
mbed_official 48:e9a2c7cb57a4 15 * - Redistributions in binary form must reproduce the above copyright
mbed_official 48:e9a2c7cb57a4 16 * notice, this list of conditions and the following disclaimer in the
mbed_official 48:e9a2c7cb57a4 17 * documentation and/or other materials provided with the distribution.
mbed_official 48:e9a2c7cb57a4 18 * - Neither the name of ARM nor the names of its contributors may be used
mbed_official 48:e9a2c7cb57a4 19 * to endorse or promote products derived from this software without
mbed_official 48:e9a2c7cb57a4 20 * specific prior written permission.
mbed_official 48:e9a2c7cb57a4 21 *
mbed_official 48:e9a2c7cb57a4 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 48:e9a2c7cb57a4 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 48:e9a2c7cb57a4 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
mbed_official 48:e9a2c7cb57a4 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
mbed_official 48:e9a2c7cb57a4 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
mbed_official 48:e9a2c7cb57a4 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mbed_official 48:e9a2c7cb57a4 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbed_official 48:e9a2c7cb57a4 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbed_official 48:e9a2c7cb57a4 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
mbed_official 48:e9a2c7cb57a4 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbed_official 48:e9a2c7cb57a4 32 * POSSIBILITY OF SUCH DAMAGE.
mbed_official 48:e9a2c7cb57a4 33 *---------------------------------------------------------------------------*/
mbed_official 48:e9a2c7cb57a4 34
mbed_official 48:e9a2c7cb57a4 35 /* Definitions */
mbed_official 48:e9a2c7cb57a4 36 #define INIT_CPSR_SYS 0x4000001F
mbed_official 48:e9a2c7cb57a4 37 #define INIT_CPSR_USER 0x40000010
mbed_official 48:e9a2c7cb57a4 38
mbed_official 48:e9a2c7cb57a4 39 #define CPSR_T_BIT 0x20
mbed_official 48:e9a2c7cb57a4 40 #define CPSR_I_BIT 0x80
mbed_official 48:e9a2c7cb57a4 41 #define CPSR_F_BIT 0x40
mbed_official 48:e9a2c7cb57a4 42
mbed_official 48:e9a2c7cb57a4 43 #define MODE_USR 0x10
mbed_official 48:e9a2c7cb57a4 44 #define MODE_FIQ 0x11
mbed_official 48:e9a2c7cb57a4 45 #define MODE_IRQ 0x12
mbed_official 48:e9a2c7cb57a4 46 #define MODE_SVC 0x13
mbed_official 48:e9a2c7cb57a4 47 #define MODE_ABT 0x17
mbed_official 48:e9a2c7cb57a4 48 #define MODE_UND 0x1B
mbed_official 48:e9a2c7cb57a4 49 #define MODE_SYS 0x1F
mbed_official 48:e9a2c7cb57a4 50
mbed_official 48:e9a2c7cb57a4 51 #define MAGIC_WORD 0xE25A2EA5
mbed_official 48:e9a2c7cb57a4 52
mbed_official 48:e9a2c7cb57a4 53 #include "core_ca9.h"
mbed_official 48:e9a2c7cb57a4 54
mbed_official 48:e9a2c7cb57a4 55 #if defined (__CC_ARM) /* ARM Compiler */
mbed_official 48:e9a2c7cb57a4 56
mbed_official 48:e9a2c7cb57a4 57 #if ((__TARGET_ARCH_7_M || __TARGET_ARCH_7E_M || __TARGET_ARCH_7_A) && !NO_EXCLUSIVE_ACCESS)
mbed_official 48:e9a2c7cb57a4 58 #define __USE_EXCLUSIVE_ACCESS
mbed_official 48:e9a2c7cb57a4 59 #else
mbed_official 48:e9a2c7cb57a4 60 #undef __USE_EXCLUSIVE_ACCESS
mbed_official 48:e9a2c7cb57a4 61 #endif
mbed_official 48:e9a2c7cb57a4 62
mbed_official 48:e9a2c7cb57a4 63 #elif defined (__GNUC__) /* GNU Compiler */
mbed_official 48:e9a2c7cb57a4 64
mbed_official 48:e9a2c7cb57a4 65 #error GNU Compiler support not implemented for Cortex-A
mbed_official 48:e9a2c7cb57a4 66
mbed_official 48:e9a2c7cb57a4 67 #elif defined (__ICCARM__) /* IAR Compiler */
mbed_official 48:e9a2c7cb57a4 68
mbed_official 48:e9a2c7cb57a4 69 #error IAR Compiler support not implemented for Cortex-A
mbed_official 48:e9a2c7cb57a4 70
mbed_official 48:e9a2c7cb57a4 71 #endif
mbed_official 48:e9a2c7cb57a4 72
mbed_official 48:e9a2c7cb57a4 73 static U8 priority = 0xff;
mbed_official 48:e9a2c7cb57a4 74
mbed_official 48:e9a2c7cb57a4 75 extern const U32 GICDistributor_BASE;
mbed_official 48:e9a2c7cb57a4 76 extern const U32 GICInterface_BASE;
mbed_official 48:e9a2c7cb57a4 77
mbed_official 48:e9a2c7cb57a4 78 /* GIC registers - Distributor */
mbed_official 48:e9a2c7cb57a4 79 #define GICD_ICDICER0 (*((volatile U32 *)(GICDistributor_BASE + 0x180))) /* - RW - Interrupt Clear-Enable Registers */
mbed_official 48:e9a2c7cb57a4 80 #define GICD_ICDISER0 (*((volatile U32 *)(GICDistributor_BASE + 0x100))) /* - RW - Interrupt Set-Enable Registers */
mbed_official 48:e9a2c7cb57a4 81 #define GICD_ICDIPR0 (*((volatile U32 *)(GICDistributor_BASE + 0x400))) /* - RW - Interrupt Priority Registers */
mbed_official 48:e9a2c7cb57a4 82 #define GICD_ICDSGIR (*((volatile U32 *)(GICDistributor_BASE + 0xf00))) /* - RW - Interrupt Software Interrupt Register */
mbed_official 48:e9a2c7cb57a4 83 #define GICD_ICDICERx(irq) *(volatile U32 *)(&GICD_ICDICER0 + irq/32)
mbed_official 48:e9a2c7cb57a4 84 #define GICD_ICDISERx(irq) *(volatile U32 *)(&GICD_ICDISER0 + irq/32)
mbed_official 48:e9a2c7cb57a4 85
mbed_official 48:e9a2c7cb57a4 86 /* GIC register - CPU Interface */
mbed_official 48:e9a2c7cb57a4 87 #define GICI_ICCPMR (*((volatile U32 *)(GICInterface_BASE + 0x004))) /* - RW - Interrupt Priority Mask Register */
mbed_official 48:e9a2c7cb57a4 88
mbed_official 48:e9a2c7cb57a4 89 #define SGI_PENDSV 0 /* SGI0 */
mbed_official 48:e9a2c7cb57a4 90 #define SGI_PENDSV_BIT ((U32)(1 << (SGI_PENDSV & 0xf)))
mbed_official 48:e9a2c7cb57a4 91
mbed_official 48:e9a2c7cb57a4 92 //Increase priority filter to prevent timer and PendSV interrupts signaling. Guarantees that interrupts will not be forwarded.
mbed_official 48:e9a2c7cb57a4 93 #define OS_LOCK() int irq_dis = __disable_irq();\
mbed_official 48:e9a2c7cb57a4 94 priority = GICI_ICCPMR; \
mbed_official 48:e9a2c7cb57a4 95 GICI_ICCPMR = 0xff; \
mbed_official 48:e9a2c7cb57a4 96 GICI_ICCPMR = GICI_ICCPMR - 1; \
mbed_official 48:e9a2c7cb57a4 97 while(GICI_ICCPMR > priority);\
mbed_official 48:e9a2c7cb57a4 98 __DSB();\
mbed_official 48:e9a2c7cb57a4 99 if(!irq_dis) __enable_irq(); \
mbed_official 48:e9a2c7cb57a4 100
mbed_official 48:e9a2c7cb57a4 101 //Restore priority filter. Re-enable timer and PendSV signaling
mbed_official 48:e9a2c7cb57a4 102 #define OS_UNLOCK() __DSB(); \
mbed_official 48:e9a2c7cb57a4 103 GICI_ICCPMR = priority; \
mbed_official 48:e9a2c7cb57a4 104
mbed_official 48:e9a2c7cb57a4 105 #define OS_PEND_IRQ() GICD_ICDSGIR = 0x0010000 | SGI_PENDSV
mbed_official 48:e9a2c7cb57a4 106 #define OS_PEND(fl,p) if(p) OS_PEND_IRQ();
mbed_official 48:e9a2c7cb57a4 107 #define OS_UNPEND(fl)
mbed_official 48:e9a2c7cb57a4 108
mbed_official 48:e9a2c7cb57a4 109 /* HW initialization needs to be done in os_tick_init (void) -RTX_Conf_CM.c-
mbed_official 48:e9a2c7cb57a4 110 * OS_X_INIT enables the IRQ n in the GIC */
mbed_official 48:e9a2c7cb57a4 111 #define OS_X_INIT(n) char *reg; \
mbed_official 48:e9a2c7cb57a4 112 reg = (char *)(&GICD_ICDIPR0 + n / 4); \
mbed_official 48:e9a2c7cb57a4 113 reg += n % 4; \
mbed_official 48:e9a2c7cb57a4 114 *reg = (char)0xff; \
mbed_official 48:e9a2c7cb57a4 115 *reg = *reg - 1; \
mbed_official 48:e9a2c7cb57a4 116 GICD_ICDISERx(n) = (U32)(1 << n % 32);
mbed_official 48:e9a2c7cb57a4 117 #define OS_X_LOCK(n) OS_LOCK()
mbed_official 48:e9a2c7cb57a4 118 #define OS_X_UNLOCK(n) OS_UNLOCK()
mbed_official 48:e9a2c7cb57a4 119 #define OS_X_PEND_IRQ() OS_PEND_IRQ()
mbed_official 48:e9a2c7cb57a4 120 #define OS_X_PEND(fl,p) if(p) OS_X_PEND_IRQ();
mbed_official 48:e9a2c7cb57a4 121 #define OS_X_UNPEND(fl)
mbed_official 48:e9a2c7cb57a4 122
mbed_official 48:e9a2c7cb57a4 123
mbed_official 48:e9a2c7cb57a4 124 /* Functions */
mbed_official 48:e9a2c7cb57a4 125 #ifdef __USE_EXCLUSIVE_ACCESS
mbed_official 48:e9a2c7cb57a4 126 #define rt_inc(p) while(__strex((__ldrex(p)+1),p))
mbed_official 48:e9a2c7cb57a4 127 #define rt_dec(p) while(__strex((__ldrex(p)-1),p))
mbed_official 48:e9a2c7cb57a4 128 #else
mbed_official 48:e9a2c7cb57a4 129 #define rt_inc(p) { int irq_dis = __disable_irq();(*p)++;if(!irq_dis) __enable_irq(); }
mbed_official 48:e9a2c7cb57a4 130 #define rt_dec(p) { int irq_dis = __disable_irq();(*p)--;if(!irq_dis) __enable_irq(); }
mbed_official 48:e9a2c7cb57a4 131 #endif
mbed_official 48:e9a2c7cb57a4 132
mbed_official 48:e9a2c7cb57a4 133 __inline static U32 rt_inc_qi (U32 size, U8 *count, U8 *first) {
mbed_official 48:e9a2c7cb57a4 134 U32 cnt,c2;
mbed_official 48:e9a2c7cb57a4 135 #ifdef __USE_EXCLUSIVE_ACCESS
mbed_official 48:e9a2c7cb57a4 136 do {
mbed_official 48:e9a2c7cb57a4 137 if ((cnt = __ldrex(count)) == size) {
mbed_official 48:e9a2c7cb57a4 138 __clrex();
mbed_official 48:e9a2c7cb57a4 139 return (cnt); }
mbed_official 48:e9a2c7cb57a4 140 } while (__strex(cnt+1, count));
mbed_official 48:e9a2c7cb57a4 141 do {
mbed_official 48:e9a2c7cb57a4 142 c2 = (cnt = __ldrex(first)) + 1;
mbed_official 48:e9a2c7cb57a4 143 if (c2 == size) c2 = 0;
mbed_official 48:e9a2c7cb57a4 144 } while (__strex(c2, first));
mbed_official 48:e9a2c7cb57a4 145 #else
mbed_official 48:e9a2c7cb57a4 146 int irq_dis;
mbed_official 48:e9a2c7cb57a4 147 irq_dis = __disable_irq();
mbed_official 48:e9a2c7cb57a4 148 if ((cnt = *count) < size) {
mbed_official 48:e9a2c7cb57a4 149 *count = cnt+1;
mbed_official 48:e9a2c7cb57a4 150 c2 = (cnt = *first) + 1;
mbed_official 48:e9a2c7cb57a4 151 if (c2 == size) c2 = 0;
mbed_official 48:e9a2c7cb57a4 152 *first = c2;
mbed_official 48:e9a2c7cb57a4 153 }
mbed_official 48:e9a2c7cb57a4 154 if(!irq_dis) __enable_irq ();
mbed_official 48:e9a2c7cb57a4 155 #endif
mbed_official 48:e9a2c7cb57a4 156 return (cnt);
mbed_official 48:e9a2c7cb57a4 157 }
mbed_official 48:e9a2c7cb57a4 158
mbed_official 48:e9a2c7cb57a4 159 __inline static void rt_systick_init (void) {
mbed_official 48:e9a2c7cb57a4 160 /* Cortex-A doesn't have a Systick. User needs to provide an alternative timer using RTX_Conf_CM configuration */
mbed_official 48:e9a2c7cb57a4 161 /* HW initialization needs to be done in os_tick_init (void) -RTX_Conf_CM.c- */
mbed_official 48:e9a2c7cb57a4 162 }
mbed_official 48:e9a2c7cb57a4 163
mbed_official 48:e9a2c7cb57a4 164 __inline static void rt_svc_init (void) {
mbed_official 48:e9a2c7cb57a4 165 /* Register pendSV - through SGI */
mbed_official 48:e9a2c7cb57a4 166 char *reg;
mbed_official 48:e9a2c7cb57a4 167
mbed_official 48:e9a2c7cb57a4 168 reg = (char *)(&GICD_ICDIPR0 + SGI_PENDSV/4);
mbed_official 48:e9a2c7cb57a4 169 reg += SGI_PENDSV % 4;
mbed_official 48:e9a2c7cb57a4 170 /* Write 0xff to read priority level */
mbed_official 48:e9a2c7cb57a4 171 *reg = (char)0xff;
mbed_official 48:e9a2c7cb57a4 172 /* Read priority level and set the lowest possible*/
mbed_official 48:e9a2c7cb57a4 173 *reg = *reg - 1;
mbed_official 48:e9a2c7cb57a4 174
mbed_official 48:e9a2c7cb57a4 175 GICD_ICDISERx(SGI_PENDSV) = (U32)SGI_PENDSV_BIT;
mbed_official 48:e9a2c7cb57a4 176 }
mbed_official 48:e9a2c7cb57a4 177
mbed_official 48:e9a2c7cb57a4 178 extern void rt_set_PSP (U32 stack);
mbed_official 48:e9a2c7cb57a4 179 extern U32 rt_get_PSP (void);
mbed_official 48:e9a2c7cb57a4 180 extern void os_set_env (P_TCB p_TCB);
mbed_official 48:e9a2c7cb57a4 181 extern void *_alloc_box (void *box_mem);
mbed_official 48:e9a2c7cb57a4 182 extern int _free_box (void *box_mem, void *box);
mbed_official 48:e9a2c7cb57a4 183
mbed_official 48:e9a2c7cb57a4 184 extern void rt_init_stack (P_TCB p_TCB, FUNCP task_body);
mbed_official 48:e9a2c7cb57a4 185 extern void rt_ret_val (P_TCB p_TCB, U32 v0);
mbed_official 48:e9a2c7cb57a4 186 extern void rt_ret_val2 (P_TCB p_TCB, U32 v0, U32 v1);
mbed_official 48:e9a2c7cb57a4 187
mbed_official 48:e9a2c7cb57a4 188 extern void dbg_init (void);
mbed_official 48:e9a2c7cb57a4 189 extern void dbg_task_notify (P_TCB p_tcb, BOOL create);
mbed_official 48:e9a2c7cb57a4 190 extern void dbg_task_switch (U32 task_id);
mbed_official 48:e9a2c7cb57a4 191
mbed_official 48:e9a2c7cb57a4 192 #define DBG_INIT()
mbed_official 48:e9a2c7cb57a4 193 #define DBG_TASK_NOTIFY(p_tcb,create)
mbed_official 48:e9a2c7cb57a4 194 #define DBG_TASK_SWITCH(task_id)
mbed_official 48:e9a2c7cb57a4 195
mbed_official 48:e9a2c7cb57a4 196 /*----------------------------------------------------------------------------
mbed_official 48:e9a2c7cb57a4 197 * end of file
mbed_official 48:e9a2c7cb57a4 198 *---------------------------------------------------------------------------*/
mbed_official 48:e9a2c7cb57a4 199