Rtos code cntains bug possible incompatability with I2C
Fork of mbed-rtos by
rtx/TARGET_CORTEX_A/rt_HAL_CA.h@68:d3d0e710b443, 2015-03-12 (annotated)
- Committer:
- mbed_official
- Date:
- Thu Mar 12 14:31:19 2015 +0000
- Revision:
- 68:d3d0e710b443
- Parent:
- 67:63988a2238f7
- Child:
- 92:bc9729798a19
Synchronized with git revision 051854181516992fb498d51f9ee6e70cbad9e083
Full URL: https://github.com/mbedmicro/mbed/commit/051854181516992fb498d51f9ee6e70cbad9e083/
Fix ksdk mcu HAL - stopbit
Who changed what in which revision?
User | Revision | Line number | New 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 | 68:d3d0e710b443 | 18 | * - Neither the name of ARM nor the names of its contributors may be used |
mbed_official | 68:d3d0e710b443 | 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 | 68:d3d0e710b443 | 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 68:d3d0e710b443 | 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 | 68:d3d0e710b443 | 27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
mbed_official | 68:d3d0e710b443 | 28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
mbed_official | 68:d3d0e710b443 | 29 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
mbed_official | 68:d3d0e710b443 | 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 | 67:63988a2238f7 | 57 | #if ((__TARGET_ARCH_7_M || __TARGET_ARCH_7E_M || __TARGET_ARCH_7_A) && !defined(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 | 67:63988a2238f7 | 65 | #undef __USE_EXCLUSIVE_ACCESS |
mbed_official | 67:63988a2238f7 | 66 | |
mbed_official | 67:63988a2238f7 | 67 | #if defined (__VFP_FP__) && !defined(__SOFTFP__) |
mbed_official | 67:63988a2238f7 | 68 | #define __TARGET_FPU_VFP 1 |
mbed_official | 67:63988a2238f7 | 69 | #else |
mbed_official | 67:63988a2238f7 | 70 | #define __TARGET_FPU_VFP 0 |
mbed_official | 67:63988a2238f7 | 71 | #endif |
mbed_official | 67:63988a2238f7 | 72 | |
mbed_official | 67:63988a2238f7 | 73 | #define __inline inline |
mbed_official | 67:63988a2238f7 | 74 | #define __weak __attribute__((weak)) |
mbed_official | 48:e9a2c7cb57a4 | 75 | |
mbed_official | 48:e9a2c7cb57a4 | 76 | #elif defined (__ICCARM__) /* IAR Compiler */ |
mbed_official | 48:e9a2c7cb57a4 | 77 | |
mbed_official | 48:e9a2c7cb57a4 | 78 | #error IAR Compiler support not implemented for Cortex-A |
mbed_official | 48:e9a2c7cb57a4 | 79 | |
mbed_official | 48:e9a2c7cb57a4 | 80 | #endif |
mbed_official | 48:e9a2c7cb57a4 | 81 | |
mbed_official | 48:e9a2c7cb57a4 | 82 | static U8 priority = 0xff; |
mbed_official | 48:e9a2c7cb57a4 | 83 | |
mbed_official | 48:e9a2c7cb57a4 | 84 | extern const U32 GICDistributor_BASE; |
mbed_official | 48:e9a2c7cb57a4 | 85 | extern const U32 GICInterface_BASE; |
mbed_official | 48:e9a2c7cb57a4 | 86 | |
mbed_official | 48:e9a2c7cb57a4 | 87 | /* GIC registers - Distributor */ |
mbed_official | 48:e9a2c7cb57a4 | 88 | #define GICD_ICDICER0 (*((volatile U32 *)(GICDistributor_BASE + 0x180))) /* - RW - Interrupt Clear-Enable Registers */ |
mbed_official | 48:e9a2c7cb57a4 | 89 | #define GICD_ICDISER0 (*((volatile U32 *)(GICDistributor_BASE + 0x100))) /* - RW - Interrupt Set-Enable Registers */ |
mbed_official | 48:e9a2c7cb57a4 | 90 | #define GICD_ICDIPR0 (*((volatile U32 *)(GICDistributor_BASE + 0x400))) /* - RW - Interrupt Priority Registers */ |
mbed_official | 48:e9a2c7cb57a4 | 91 | #define GICD_ICDSGIR (*((volatile U32 *)(GICDistributor_BASE + 0xf00))) /* - RW - Interrupt Software Interrupt Register */ |
mbed_official | 48:e9a2c7cb57a4 | 92 | #define GICD_ICDICERx(irq) *(volatile U32 *)(&GICD_ICDICER0 + irq/32) |
mbed_official | 48:e9a2c7cb57a4 | 93 | #define GICD_ICDISERx(irq) *(volatile U32 *)(&GICD_ICDISER0 + irq/32) |
mbed_official | 48:e9a2c7cb57a4 | 94 | |
mbed_official | 48:e9a2c7cb57a4 | 95 | /* GIC register - CPU Interface */ |
mbed_official | 48:e9a2c7cb57a4 | 96 | #define GICI_ICCPMR (*((volatile U32 *)(GICInterface_BASE + 0x004))) /* - RW - Interrupt Priority Mask Register */ |
mbed_official | 48:e9a2c7cb57a4 | 97 | |
mbed_official | 48:e9a2c7cb57a4 | 98 | #define SGI_PENDSV 0 /* SGI0 */ |
mbed_official | 48:e9a2c7cb57a4 | 99 | #define SGI_PENDSV_BIT ((U32)(1 << (SGI_PENDSV & 0xf))) |
mbed_official | 48:e9a2c7cb57a4 | 100 | |
mbed_official | 48:e9a2c7cb57a4 | 101 | //Increase priority filter to prevent timer and PendSV interrupts signaling. Guarantees that interrupts will not be forwarded. |
mbed_official | 48:e9a2c7cb57a4 | 102 | #define OS_LOCK() int irq_dis = __disable_irq();\ |
mbed_official | 48:e9a2c7cb57a4 | 103 | priority = GICI_ICCPMR; \ |
mbed_official | 48:e9a2c7cb57a4 | 104 | GICI_ICCPMR = 0xff; \ |
mbed_official | 48:e9a2c7cb57a4 | 105 | GICI_ICCPMR = GICI_ICCPMR - 1; \ |
mbed_official | 48:e9a2c7cb57a4 | 106 | __DSB();\ |
mbed_official | 48:e9a2c7cb57a4 | 107 | if(!irq_dis) __enable_irq(); \ |
mbed_official | 48:e9a2c7cb57a4 | 108 | |
mbed_official | 48:e9a2c7cb57a4 | 109 | //Restore priority filter. Re-enable timer and PendSV signaling |
mbed_official | 48:e9a2c7cb57a4 | 110 | #define OS_UNLOCK() __DSB(); \ |
mbed_official | 48:e9a2c7cb57a4 | 111 | GICI_ICCPMR = priority; \ |
mbed_official | 48:e9a2c7cb57a4 | 112 | |
mbed_official | 48:e9a2c7cb57a4 | 113 | #define OS_PEND_IRQ() GICD_ICDSGIR = 0x0010000 | SGI_PENDSV |
mbed_official | 48:e9a2c7cb57a4 | 114 | #define OS_PEND(fl,p) if(p) OS_PEND_IRQ(); |
mbed_official | 48:e9a2c7cb57a4 | 115 | #define OS_UNPEND(fl) |
mbed_official | 48:e9a2c7cb57a4 | 116 | |
mbed_official | 48:e9a2c7cb57a4 | 117 | /* HW initialization needs to be done in os_tick_init (void) -RTX_Conf_CM.c- |
mbed_official | 48:e9a2c7cb57a4 | 118 | * OS_X_INIT enables the IRQ n in the GIC */ |
mbed_official | 51:318e02f48146 | 119 | #define OS_X_INIT(n) volatile char *reg; \ |
mbed_official | 48:e9a2c7cb57a4 | 120 | reg = (char *)(&GICD_ICDIPR0 + n / 4); \ |
mbed_official | 48:e9a2c7cb57a4 | 121 | reg += n % 4; \ |
mbed_official | 48:e9a2c7cb57a4 | 122 | *reg = (char)0xff; \ |
mbed_official | 48:e9a2c7cb57a4 | 123 | *reg = *reg - 1; \ |
mbed_official | 48:e9a2c7cb57a4 | 124 | GICD_ICDISERx(n) = (U32)(1 << n % 32); |
mbed_official | 48:e9a2c7cb57a4 | 125 | #define OS_X_LOCK(n) OS_LOCK() |
mbed_official | 48:e9a2c7cb57a4 | 126 | #define OS_X_UNLOCK(n) OS_UNLOCK() |
mbed_official | 48:e9a2c7cb57a4 | 127 | #define OS_X_PEND_IRQ() OS_PEND_IRQ() |
mbed_official | 48:e9a2c7cb57a4 | 128 | #define OS_X_PEND(fl,p) if(p) OS_X_PEND_IRQ(); |
mbed_official | 48:e9a2c7cb57a4 | 129 | #define OS_X_UNPEND(fl) |
mbed_official | 48:e9a2c7cb57a4 | 130 | |
mbed_official | 48:e9a2c7cb57a4 | 131 | |
mbed_official | 48:e9a2c7cb57a4 | 132 | /* Functions */ |
mbed_official | 48:e9a2c7cb57a4 | 133 | #ifdef __USE_EXCLUSIVE_ACCESS |
mbed_official | 48:e9a2c7cb57a4 | 134 | #define rt_inc(p) while(__strex((__ldrex(p)+1),p)) |
mbed_official | 48:e9a2c7cb57a4 | 135 | #define rt_dec(p) while(__strex((__ldrex(p)-1),p)) |
mbed_official | 48:e9a2c7cb57a4 | 136 | #else |
mbed_official | 48:e9a2c7cb57a4 | 137 | #define rt_inc(p) { int irq_dis = __disable_irq();(*p)++;if(!irq_dis) __enable_irq(); } |
mbed_official | 48:e9a2c7cb57a4 | 138 | #define rt_dec(p) { int irq_dis = __disable_irq();(*p)--;if(!irq_dis) __enable_irq(); } |
mbed_official | 48:e9a2c7cb57a4 | 139 | #endif |
mbed_official | 48:e9a2c7cb57a4 | 140 | |
mbed_official | 48:e9a2c7cb57a4 | 141 | __inline static U32 rt_inc_qi (U32 size, U8 *count, U8 *first) { |
mbed_official | 48:e9a2c7cb57a4 | 142 | U32 cnt,c2; |
mbed_official | 48:e9a2c7cb57a4 | 143 | #ifdef __USE_EXCLUSIVE_ACCESS |
mbed_official | 48:e9a2c7cb57a4 | 144 | do { |
mbed_official | 48:e9a2c7cb57a4 | 145 | if ((cnt = __ldrex(count)) == size) { |
mbed_official | 48:e9a2c7cb57a4 | 146 | __clrex(); |
mbed_official | 48:e9a2c7cb57a4 | 147 | return (cnt); } |
mbed_official | 48:e9a2c7cb57a4 | 148 | } while (__strex(cnt+1, count)); |
mbed_official | 48:e9a2c7cb57a4 | 149 | do { |
mbed_official | 48:e9a2c7cb57a4 | 150 | c2 = (cnt = __ldrex(first)) + 1; |
mbed_official | 48:e9a2c7cb57a4 | 151 | if (c2 == size) c2 = 0; |
mbed_official | 48:e9a2c7cb57a4 | 152 | } while (__strex(c2, first)); |
mbed_official | 48:e9a2c7cb57a4 | 153 | #else |
mbed_official | 48:e9a2c7cb57a4 | 154 | int irq_dis; |
mbed_official | 48:e9a2c7cb57a4 | 155 | irq_dis = __disable_irq(); |
mbed_official | 48:e9a2c7cb57a4 | 156 | if ((cnt = *count) < size) { |
mbed_official | 48:e9a2c7cb57a4 | 157 | *count = cnt+1; |
mbed_official | 48:e9a2c7cb57a4 | 158 | c2 = (cnt = *first) + 1; |
mbed_official | 48:e9a2c7cb57a4 | 159 | if (c2 == size) c2 = 0; |
mbed_official | 68:d3d0e710b443 | 160 | *first = c2; |
mbed_official | 48:e9a2c7cb57a4 | 161 | } |
mbed_official | 48:e9a2c7cb57a4 | 162 | if(!irq_dis) __enable_irq (); |
mbed_official | 48:e9a2c7cb57a4 | 163 | #endif |
mbed_official | 48:e9a2c7cb57a4 | 164 | return (cnt); |
mbed_official | 48:e9a2c7cb57a4 | 165 | } |
mbed_official | 48:e9a2c7cb57a4 | 166 | |
mbed_official | 48:e9a2c7cb57a4 | 167 | __inline static void rt_systick_init (void) { |
mbed_official | 48:e9a2c7cb57a4 | 168 | /* Cortex-A doesn't have a Systick. User needs to provide an alternative timer using RTX_Conf_CM configuration */ |
mbed_official | 48:e9a2c7cb57a4 | 169 | /* HW initialization needs to be done in os_tick_init (void) -RTX_Conf_CM.c- */ |
mbed_official | 48:e9a2c7cb57a4 | 170 | } |
mbed_official | 48:e9a2c7cb57a4 | 171 | |
mbed_official | 48:e9a2c7cb57a4 | 172 | __inline static void rt_svc_init (void) { |
mbed_official | 48:e9a2c7cb57a4 | 173 | /* Register pendSV - through SGI */ |
mbed_official | 51:318e02f48146 | 174 | volatile char *reg; |
mbed_official | 48:e9a2c7cb57a4 | 175 | |
mbed_official | 48:e9a2c7cb57a4 | 176 | reg = (char *)(&GICD_ICDIPR0 + SGI_PENDSV/4); |
mbed_official | 48:e9a2c7cb57a4 | 177 | reg += SGI_PENDSV % 4; |
mbed_official | 48:e9a2c7cb57a4 | 178 | /* Write 0xff to read priority level */ |
mbed_official | 48:e9a2c7cb57a4 | 179 | *reg = (char)0xff; |
mbed_official | 48:e9a2c7cb57a4 | 180 | /* Read priority level and set the lowest possible*/ |
mbed_official | 48:e9a2c7cb57a4 | 181 | *reg = *reg - 1; |
mbed_official | 48:e9a2c7cb57a4 | 182 | |
mbed_official | 48:e9a2c7cb57a4 | 183 | GICD_ICDISERx(SGI_PENDSV) = (U32)SGI_PENDSV_BIT; |
mbed_official | 48:e9a2c7cb57a4 | 184 | } |
mbed_official | 48:e9a2c7cb57a4 | 185 | |
mbed_official | 48:e9a2c7cb57a4 | 186 | extern void rt_set_PSP (U32 stack); |
mbed_official | 48:e9a2c7cb57a4 | 187 | extern U32 rt_get_PSP (void); |
mbed_official | 48:e9a2c7cb57a4 | 188 | extern void os_set_env (P_TCB p_TCB); |
mbed_official | 48:e9a2c7cb57a4 | 189 | extern void *_alloc_box (void *box_mem); |
mbed_official | 48:e9a2c7cb57a4 | 190 | extern int _free_box (void *box_mem, void *box); |
mbed_official | 48:e9a2c7cb57a4 | 191 | |
mbed_official | 48:e9a2c7cb57a4 | 192 | extern void rt_init_stack (P_TCB p_TCB, FUNCP task_body); |
mbed_official | 48:e9a2c7cb57a4 | 193 | extern void rt_ret_val (P_TCB p_TCB, U32 v0); |
mbed_official | 48:e9a2c7cb57a4 | 194 | extern void rt_ret_val2 (P_TCB p_TCB, U32 v0, U32 v1); |
mbed_official | 48:e9a2c7cb57a4 | 195 | |
mbed_official | 48:e9a2c7cb57a4 | 196 | extern void dbg_init (void); |
mbed_official | 48:e9a2c7cb57a4 | 197 | extern void dbg_task_notify (P_TCB p_tcb, BOOL create); |
mbed_official | 48:e9a2c7cb57a4 | 198 | extern void dbg_task_switch (U32 task_id); |
mbed_official | 48:e9a2c7cb57a4 | 199 | |
mbed_official | 48:e9a2c7cb57a4 | 200 | #define DBG_INIT() |
mbed_official | 48:e9a2c7cb57a4 | 201 | #define DBG_TASK_NOTIFY(p_tcb,create) |
mbed_official | 48:e9a2c7cb57a4 | 202 | #define DBG_TASK_SWITCH(task_id) |
mbed_official | 48:e9a2c7cb57a4 | 203 | |
mbed_official | 48:e9a2c7cb57a4 | 204 | /*---------------------------------------------------------------------------- |
mbed_official | 48:e9a2c7cb57a4 | 205 | * end of file |
mbed_official | 48:e9a2c7cb57a4 | 206 | *---------------------------------------------------------------------------*/ |
mbed_official | 48:e9a2c7cb57a4 | 207 |