siva surendar / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

targets/cmsis/core_caFunc.h@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Child:
66:fdb3f9f9a72f
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /**************************************************************************//**
bogdanm 0:9b334a45a8ff 2 * @file core_caFunc.h
bogdanm 0:9b334a45a8ff 3 * @brief CMSIS Cortex-A Core Function Access Header File
bogdanm 0:9b334a45a8ff 4 * @version V3.10
bogdanm 0:9b334a45a8ff 5 * @date 30 Oct 2013
bogdanm 0:9b334a45a8ff 6 *
bogdanm 0:9b334a45a8ff 7 * @note
bogdanm 0:9b334a45a8ff 8 *
bogdanm 0:9b334a45a8ff 9 ******************************************************************************/
bogdanm 0:9b334a45a8ff 10 /* Copyright (c) 2009 - 2013 ARM LIMITED
bogdanm 0:9b334a45a8ff 11
bogdanm 0:9b334a45a8ff 12 All rights reserved.
bogdanm 0:9b334a45a8ff 13 Redistribution and use in source and binary forms, with or without
bogdanm 0:9b334a45a8ff 14 modification, are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 15 - Redistributions of source code must retain the above copyright
bogdanm 0:9b334a45a8ff 16 notice, this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 17 - Redistributions in binary form must reproduce the above copyright
bogdanm 0:9b334a45a8ff 18 notice, this list of conditions and the following disclaimer in the
bogdanm 0:9b334a45a8ff 19 documentation and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 20 - Neither the name of ARM nor the names of its contributors may be used
bogdanm 0:9b334a45a8ff 21 to endorse or promote products derived from this software without
bogdanm 0:9b334a45a8ff 22 specific prior written permission.
bogdanm 0:9b334a45a8ff 23 *
bogdanm 0:9b334a45a8ff 24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
bogdanm 0:9b334a45a8ff 27 ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
bogdanm 0:9b334a45a8ff 28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
bogdanm 0:9b334a45a8ff 29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
bogdanm 0:9b334a45a8ff 30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
bogdanm 0:9b334a45a8ff 31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
bogdanm 0:9b334a45a8ff 32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
bogdanm 0:9b334a45a8ff 33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
bogdanm 0:9b334a45a8ff 34 POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 35 ---------------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 36
bogdanm 0:9b334a45a8ff 37
bogdanm 0:9b334a45a8ff 38 #ifndef __CORE_CAFUNC_H__
bogdanm 0:9b334a45a8ff 39 #define __CORE_CAFUNC_H__
bogdanm 0:9b334a45a8ff 40
bogdanm 0:9b334a45a8ff 41
bogdanm 0:9b334a45a8ff 42 /* ########################### Core Function Access ########################### */
bogdanm 0:9b334a45a8ff 43 /** \ingroup CMSIS_Core_FunctionInterface
bogdanm 0:9b334a45a8ff 44 \defgroup CMSIS_Core_RegAccFunctions CMSIS Core Register Access Functions
bogdanm 0:9b334a45a8ff 45 @{
bogdanm 0:9b334a45a8ff 46 */
bogdanm 0:9b334a45a8ff 47
bogdanm 0:9b334a45a8ff 48 #if defined ( __CC_ARM ) /*------------------RealView Compiler -----------------*/
bogdanm 0:9b334a45a8ff 49 /* ARM armcc specific functions */
bogdanm 0:9b334a45a8ff 50
bogdanm 0:9b334a45a8ff 51 #if (__ARMCC_VERSION < 400677)
bogdanm 0:9b334a45a8ff 52 #error "Please use ARM Compiler Toolchain V4.0.677 or later!"
bogdanm 0:9b334a45a8ff 53 #endif
bogdanm 0:9b334a45a8ff 54
bogdanm 0:9b334a45a8ff 55 #define MODE_USR 0x10
bogdanm 0:9b334a45a8ff 56 #define MODE_FIQ 0x11
bogdanm 0:9b334a45a8ff 57 #define MODE_IRQ 0x12
bogdanm 0:9b334a45a8ff 58 #define MODE_SVC 0x13
bogdanm 0:9b334a45a8ff 59 #define MODE_MON 0x16
bogdanm 0:9b334a45a8ff 60 #define MODE_ABT 0x17
bogdanm 0:9b334a45a8ff 61 #define MODE_HYP 0x1A
bogdanm 0:9b334a45a8ff 62 #define MODE_UND 0x1B
bogdanm 0:9b334a45a8ff 63 #define MODE_SYS 0x1F
bogdanm 0:9b334a45a8ff 64
bogdanm 0:9b334a45a8ff 65 /** \brief Get APSR Register
bogdanm 0:9b334a45a8ff 66
bogdanm 0:9b334a45a8ff 67 This function returns the content of the APSR Register.
bogdanm 0:9b334a45a8ff 68
bogdanm 0:9b334a45a8ff 69 \return APSR Register value
bogdanm 0:9b334a45a8ff 70 */
bogdanm 0:9b334a45a8ff 71 __STATIC_INLINE uint32_t __get_APSR(void)
bogdanm 0:9b334a45a8ff 72 {
bogdanm 0:9b334a45a8ff 73 register uint32_t __regAPSR __ASM("apsr");
bogdanm 0:9b334a45a8ff 74 return(__regAPSR);
bogdanm 0:9b334a45a8ff 75 }
bogdanm 0:9b334a45a8ff 76
bogdanm 0:9b334a45a8ff 77
bogdanm 0:9b334a45a8ff 78 /** \brief Get CPSR Register
bogdanm 0:9b334a45a8ff 79
bogdanm 0:9b334a45a8ff 80 This function returns the content of the CPSR Register.
bogdanm 0:9b334a45a8ff 81
bogdanm 0:9b334a45a8ff 82 \return CPSR Register value
bogdanm 0:9b334a45a8ff 83 */
bogdanm 0:9b334a45a8ff 84 __STATIC_INLINE uint32_t __get_CPSR(void)
bogdanm 0:9b334a45a8ff 85 {
bogdanm 0:9b334a45a8ff 86 register uint32_t __regCPSR __ASM("cpsr");
bogdanm 0:9b334a45a8ff 87 return(__regCPSR);
bogdanm 0:9b334a45a8ff 88 }
bogdanm 0:9b334a45a8ff 89
bogdanm 0:9b334a45a8ff 90 /** \brief Set Stack Pointer
bogdanm 0:9b334a45a8ff 91
bogdanm 0:9b334a45a8ff 92 This function assigns the given value to the current stack pointer.
bogdanm 0:9b334a45a8ff 93
bogdanm 0:9b334a45a8ff 94 \param [in] topOfStack Stack Pointer value to set
bogdanm 0:9b334a45a8ff 95 */
bogdanm 0:9b334a45a8ff 96 register uint32_t __regSP __ASM("sp");
bogdanm 0:9b334a45a8ff 97 __STATIC_INLINE void __set_SP(uint32_t topOfStack)
bogdanm 0:9b334a45a8ff 98 {
bogdanm 0:9b334a45a8ff 99 __regSP = topOfStack;
bogdanm 0:9b334a45a8ff 100 }
bogdanm 0:9b334a45a8ff 101
bogdanm 0:9b334a45a8ff 102
bogdanm 0:9b334a45a8ff 103 /** \brief Get link register
bogdanm 0:9b334a45a8ff 104
bogdanm 0:9b334a45a8ff 105 This function returns the value of the link register
bogdanm 0:9b334a45a8ff 106
bogdanm 0:9b334a45a8ff 107 \return Value of link register
bogdanm 0:9b334a45a8ff 108 */
bogdanm 0:9b334a45a8ff 109 register uint32_t __reglr __ASM("lr");
bogdanm 0:9b334a45a8ff 110 __STATIC_INLINE uint32_t __get_LR(void)
bogdanm 0:9b334a45a8ff 111 {
bogdanm 0:9b334a45a8ff 112 return(__reglr);
bogdanm 0:9b334a45a8ff 113 }
bogdanm 0:9b334a45a8ff 114
bogdanm 0:9b334a45a8ff 115 /** \brief Set link register
bogdanm 0:9b334a45a8ff 116
bogdanm 0:9b334a45a8ff 117 This function sets the value of the link register
bogdanm 0:9b334a45a8ff 118
bogdanm 0:9b334a45a8ff 119 \param [in] lr LR value to set
bogdanm 0:9b334a45a8ff 120 */
bogdanm 0:9b334a45a8ff 121 __STATIC_INLINE void __set_LR(uint32_t lr)
bogdanm 0:9b334a45a8ff 122 {
bogdanm 0:9b334a45a8ff 123 __reglr = lr;
bogdanm 0:9b334a45a8ff 124 }
bogdanm 0:9b334a45a8ff 125
bogdanm 0:9b334a45a8ff 126 /** \brief Set Process Stack Pointer
bogdanm 0:9b334a45a8ff 127
bogdanm 0:9b334a45a8ff 128 This function assigns the given value to the USR/SYS Stack Pointer (PSP).
bogdanm 0:9b334a45a8ff 129
bogdanm 0:9b334a45a8ff 130 \param [in] topOfProcStack USR/SYS Stack Pointer value to set
bogdanm 0:9b334a45a8ff 131 */
bogdanm 0:9b334a45a8ff 132 __STATIC_ASM void __set_PSP(uint32_t topOfProcStack)
bogdanm 0:9b334a45a8ff 133 {
bogdanm 0:9b334a45a8ff 134 ARM
bogdanm 0:9b334a45a8ff 135 PRESERVE8
bogdanm 0:9b334a45a8ff 136
bogdanm 0:9b334a45a8ff 137 BIC R0, R0, #7 ;ensure stack is 8-byte aligned
bogdanm 0:9b334a45a8ff 138 MRS R1, CPSR
bogdanm 0:9b334a45a8ff 139 CPS #MODE_SYS ;no effect in USR mode
bogdanm 0:9b334a45a8ff 140 MOV SP, R0
bogdanm 0:9b334a45a8ff 141 MSR CPSR_c, R1 ;no effect in USR mode
bogdanm 0:9b334a45a8ff 142 ISB
bogdanm 0:9b334a45a8ff 143 BX LR
bogdanm 0:9b334a45a8ff 144
bogdanm 0:9b334a45a8ff 145 }
bogdanm 0:9b334a45a8ff 146
bogdanm 0:9b334a45a8ff 147 /** \brief Set User Mode
bogdanm 0:9b334a45a8ff 148
bogdanm 0:9b334a45a8ff 149 This function changes the processor state to User Mode
bogdanm 0:9b334a45a8ff 150 */
bogdanm 0:9b334a45a8ff 151 __STATIC_ASM void __set_CPS_USR(void)
bogdanm 0:9b334a45a8ff 152 {
bogdanm 0:9b334a45a8ff 153 ARM
bogdanm 0:9b334a45a8ff 154
bogdanm 0:9b334a45a8ff 155 CPS #MODE_USR
bogdanm 0:9b334a45a8ff 156 BX LR
bogdanm 0:9b334a45a8ff 157 }
bogdanm 0:9b334a45a8ff 158
bogdanm 0:9b334a45a8ff 159
bogdanm 0:9b334a45a8ff 160 /** \brief Enable FIQ
bogdanm 0:9b334a45a8ff 161
bogdanm 0:9b334a45a8ff 162 This function enables FIQ interrupts by clearing the F-bit in the CPSR.
bogdanm 0:9b334a45a8ff 163 Can only be executed in Privileged modes.
bogdanm 0:9b334a45a8ff 164 */
bogdanm 0:9b334a45a8ff 165 #define __enable_fault_irq __enable_fiq
bogdanm 0:9b334a45a8ff 166
bogdanm 0:9b334a45a8ff 167
bogdanm 0:9b334a45a8ff 168 /** \brief Disable FIQ
bogdanm 0:9b334a45a8ff 169
bogdanm 0:9b334a45a8ff 170 This function disables FIQ interrupts by setting the F-bit in the CPSR.
bogdanm 0:9b334a45a8ff 171 Can only be executed in Privileged modes.
bogdanm 0:9b334a45a8ff 172 */
bogdanm 0:9b334a45a8ff 173 #define __disable_fault_irq __disable_fiq
bogdanm 0:9b334a45a8ff 174
bogdanm 0:9b334a45a8ff 175
bogdanm 0:9b334a45a8ff 176 /** \brief Get FPSCR
bogdanm 0:9b334a45a8ff 177
bogdanm 0:9b334a45a8ff 178 This function returns the current value of the Floating Point Status/Control register.
bogdanm 0:9b334a45a8ff 179
bogdanm 0:9b334a45a8ff 180 \return Floating Point Status/Control register value
bogdanm 0:9b334a45a8ff 181 */
bogdanm 0:9b334a45a8ff 182 __STATIC_INLINE uint32_t __get_FPSCR(void)
bogdanm 0:9b334a45a8ff 183 {
bogdanm 0:9b334a45a8ff 184 #if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
bogdanm 0:9b334a45a8ff 185 register uint32_t __regfpscr __ASM("fpscr");
bogdanm 0:9b334a45a8ff 186 return(__regfpscr);
bogdanm 0:9b334a45a8ff 187 #else
bogdanm 0:9b334a45a8ff 188 return(0);
bogdanm 0:9b334a45a8ff 189 #endif
bogdanm 0:9b334a45a8ff 190 }
bogdanm 0:9b334a45a8ff 191
bogdanm 0:9b334a45a8ff 192
bogdanm 0:9b334a45a8ff 193 /** \brief Set FPSCR
bogdanm 0:9b334a45a8ff 194
bogdanm 0:9b334a45a8ff 195 This function assigns the given value to the Floating Point Status/Control register.
bogdanm 0:9b334a45a8ff 196
bogdanm 0:9b334a45a8ff 197 \param [in] fpscr Floating Point Status/Control value to set
bogdanm 0:9b334a45a8ff 198 */
bogdanm 0:9b334a45a8ff 199 __STATIC_INLINE void __set_FPSCR(uint32_t fpscr)
bogdanm 0:9b334a45a8ff 200 {
bogdanm 0:9b334a45a8ff 201 #if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
bogdanm 0:9b334a45a8ff 202 register uint32_t __regfpscr __ASM("fpscr");
bogdanm 0:9b334a45a8ff 203 __regfpscr = (fpscr);
bogdanm 0:9b334a45a8ff 204 #endif
bogdanm 0:9b334a45a8ff 205 }
bogdanm 0:9b334a45a8ff 206
bogdanm 0:9b334a45a8ff 207 /** \brief Get FPEXC
bogdanm 0:9b334a45a8ff 208
bogdanm 0:9b334a45a8ff 209 This function returns the current value of the Floating Point Exception Control register.
bogdanm 0:9b334a45a8ff 210
bogdanm 0:9b334a45a8ff 211 \return Floating Point Exception Control register value
bogdanm 0:9b334a45a8ff 212 */
bogdanm 0:9b334a45a8ff 213 __STATIC_INLINE uint32_t __get_FPEXC(void)
bogdanm 0:9b334a45a8ff 214 {
bogdanm 0:9b334a45a8ff 215 #if (__FPU_PRESENT == 1)
bogdanm 0:9b334a45a8ff 216 register uint32_t __regfpexc __ASM("fpexc");
bogdanm 0:9b334a45a8ff 217 return(__regfpexc);
bogdanm 0:9b334a45a8ff 218 #else
bogdanm 0:9b334a45a8ff 219 return(0);
bogdanm 0:9b334a45a8ff 220 #endif
bogdanm 0:9b334a45a8ff 221 }
bogdanm 0:9b334a45a8ff 222
bogdanm 0:9b334a45a8ff 223
bogdanm 0:9b334a45a8ff 224 /** \brief Set FPEXC
bogdanm 0:9b334a45a8ff 225
bogdanm 0:9b334a45a8ff 226 This function assigns the given value to the Floating Point Exception Control register.
bogdanm 0:9b334a45a8ff 227
bogdanm 0:9b334a45a8ff 228 \param [in] fpscr Floating Point Exception Control value to set
bogdanm 0:9b334a45a8ff 229 */
bogdanm 0:9b334a45a8ff 230 __STATIC_INLINE void __set_FPEXC(uint32_t fpexc)
bogdanm 0:9b334a45a8ff 231 {
bogdanm 0:9b334a45a8ff 232 #if (__FPU_PRESENT == 1)
bogdanm 0:9b334a45a8ff 233 register uint32_t __regfpexc __ASM("fpexc");
bogdanm 0:9b334a45a8ff 234 __regfpexc = (fpexc);
bogdanm 0:9b334a45a8ff 235 #endif
bogdanm 0:9b334a45a8ff 236 }
bogdanm 0:9b334a45a8ff 237
bogdanm 0:9b334a45a8ff 238 /** \brief Get CPACR
bogdanm 0:9b334a45a8ff 239
bogdanm 0:9b334a45a8ff 240 This function returns the current value of the Coprocessor Access Control register.
bogdanm 0:9b334a45a8ff 241
bogdanm 0:9b334a45a8ff 242 \return Coprocessor Access Control register value
bogdanm 0:9b334a45a8ff 243 */
bogdanm 0:9b334a45a8ff 244 __STATIC_INLINE uint32_t __get_CPACR(void)
bogdanm 0:9b334a45a8ff 245 {
bogdanm 0:9b334a45a8ff 246 register uint32_t __regCPACR __ASM("cp15:0:c1:c0:2");
bogdanm 0:9b334a45a8ff 247 return __regCPACR;
bogdanm 0:9b334a45a8ff 248 }
bogdanm 0:9b334a45a8ff 249
bogdanm 0:9b334a45a8ff 250 /** \brief Set CPACR
bogdanm 0:9b334a45a8ff 251
bogdanm 0:9b334a45a8ff 252 This function assigns the given value to the Coprocessor Access Control register.
bogdanm 0:9b334a45a8ff 253
bogdanm 0:9b334a45a8ff 254 \param [in] cpacr Coprocessor Acccess Control value to set
bogdanm 0:9b334a45a8ff 255 */
bogdanm 0:9b334a45a8ff 256 __STATIC_INLINE void __set_CPACR(uint32_t cpacr)
bogdanm 0:9b334a45a8ff 257 {
bogdanm 0:9b334a45a8ff 258 register uint32_t __regCPACR __ASM("cp15:0:c1:c0:2");
bogdanm 0:9b334a45a8ff 259 __regCPACR = cpacr;
bogdanm 0:9b334a45a8ff 260 __ISB();
bogdanm 0:9b334a45a8ff 261 }
bogdanm 0:9b334a45a8ff 262
bogdanm 0:9b334a45a8ff 263 /** \brief Get CBAR
bogdanm 0:9b334a45a8ff 264
bogdanm 0:9b334a45a8ff 265 This function returns the value of the Configuration Base Address register.
bogdanm 0:9b334a45a8ff 266
bogdanm 0:9b334a45a8ff 267 \return Configuration Base Address register value
bogdanm 0:9b334a45a8ff 268 */
bogdanm 0:9b334a45a8ff 269 __STATIC_INLINE uint32_t __get_CBAR() {
bogdanm 0:9b334a45a8ff 270 register uint32_t __regCBAR __ASM("cp15:4:c15:c0:0");
bogdanm 0:9b334a45a8ff 271 return(__regCBAR);
bogdanm 0:9b334a45a8ff 272 }
bogdanm 0:9b334a45a8ff 273
bogdanm 0:9b334a45a8ff 274 /** \brief Get TTBR0
bogdanm 0:9b334a45a8ff 275
bogdanm 0:9b334a45a8ff 276 This function returns the value of the Translation Table Base Register 0.
bogdanm 0:9b334a45a8ff 277
bogdanm 0:9b334a45a8ff 278 \return Translation Table Base Register 0 value
bogdanm 0:9b334a45a8ff 279 */
bogdanm 0:9b334a45a8ff 280 __STATIC_INLINE uint32_t __get_TTBR0() {
bogdanm 0:9b334a45a8ff 281 register uint32_t __regTTBR0 __ASM("cp15:0:c2:c0:0");
bogdanm 0:9b334a45a8ff 282 return(__regTTBR0);
bogdanm 0:9b334a45a8ff 283 }
bogdanm 0:9b334a45a8ff 284
bogdanm 0:9b334a45a8ff 285 /** \brief Set TTBR0
bogdanm 0:9b334a45a8ff 286
bogdanm 0:9b334a45a8ff 287 This function assigns the given value to the Translation Table Base Register 0.
bogdanm 0:9b334a45a8ff 288
bogdanm 0:9b334a45a8ff 289 \param [in] ttbr0 Translation Table Base Register 0 value to set
bogdanm 0:9b334a45a8ff 290 */
bogdanm 0:9b334a45a8ff 291 __STATIC_INLINE void __set_TTBR0(uint32_t ttbr0) {
bogdanm 0:9b334a45a8ff 292 register uint32_t __regTTBR0 __ASM("cp15:0:c2:c0:0");
bogdanm 0:9b334a45a8ff 293 __regTTBR0 = ttbr0;
bogdanm 0:9b334a45a8ff 294 __ISB();
bogdanm 0:9b334a45a8ff 295 }
bogdanm 0:9b334a45a8ff 296
bogdanm 0:9b334a45a8ff 297 /** \brief Get DACR
bogdanm 0:9b334a45a8ff 298
bogdanm 0:9b334a45a8ff 299 This function returns the value of the Domain Access Control Register.
bogdanm 0:9b334a45a8ff 300
bogdanm 0:9b334a45a8ff 301 \return Domain Access Control Register value
bogdanm 0:9b334a45a8ff 302 */
bogdanm 0:9b334a45a8ff 303 __STATIC_INLINE uint32_t __get_DACR() {
bogdanm 0:9b334a45a8ff 304 register uint32_t __regDACR __ASM("cp15:0:c3:c0:0");
bogdanm 0:9b334a45a8ff 305 return(__regDACR);
bogdanm 0:9b334a45a8ff 306 }
bogdanm 0:9b334a45a8ff 307
bogdanm 0:9b334a45a8ff 308 /** \brief Set DACR
bogdanm 0:9b334a45a8ff 309
bogdanm 0:9b334a45a8ff 310 This function assigns the given value to the Domain Access Control Register.
bogdanm 0:9b334a45a8ff 311
bogdanm 0:9b334a45a8ff 312 \param [in] dacr Domain Access Control Register value to set
bogdanm 0:9b334a45a8ff 313 */
bogdanm 0:9b334a45a8ff 314 __STATIC_INLINE void __set_DACR(uint32_t dacr) {
bogdanm 0:9b334a45a8ff 315 register uint32_t __regDACR __ASM("cp15:0:c3:c0:0");
bogdanm 0:9b334a45a8ff 316 __regDACR = dacr;
bogdanm 0:9b334a45a8ff 317 __ISB();
bogdanm 0:9b334a45a8ff 318 }
bogdanm 0:9b334a45a8ff 319
bogdanm 0:9b334a45a8ff 320 /******************************** Cache and BTAC enable ****************************************************/
bogdanm 0:9b334a45a8ff 321
bogdanm 0:9b334a45a8ff 322 /** \brief Set SCTLR
bogdanm 0:9b334a45a8ff 323
bogdanm 0:9b334a45a8ff 324 This function assigns the given value to the System Control Register.
bogdanm 0:9b334a45a8ff 325
bogdanm 0:9b334a45a8ff 326 \param [in] sctlr System Control Register value to set
bogdanm 0:9b334a45a8ff 327 */
bogdanm 0:9b334a45a8ff 328 __STATIC_INLINE void __set_SCTLR(uint32_t sctlr)
bogdanm 0:9b334a45a8ff 329 {
bogdanm 0:9b334a45a8ff 330 register uint32_t __regSCTLR __ASM("cp15:0:c1:c0:0");
bogdanm 0:9b334a45a8ff 331 __regSCTLR = sctlr;
bogdanm 0:9b334a45a8ff 332 }
bogdanm 0:9b334a45a8ff 333
bogdanm 0:9b334a45a8ff 334 /** \brief Get SCTLR
bogdanm 0:9b334a45a8ff 335
bogdanm 0:9b334a45a8ff 336 This function returns the value of the System Control Register.
bogdanm 0:9b334a45a8ff 337
bogdanm 0:9b334a45a8ff 338 \return System Control Register value
bogdanm 0:9b334a45a8ff 339 */
bogdanm 0:9b334a45a8ff 340 __STATIC_INLINE uint32_t __get_SCTLR() {
bogdanm 0:9b334a45a8ff 341 register uint32_t __regSCTLR __ASM("cp15:0:c1:c0:0");
bogdanm 0:9b334a45a8ff 342 return(__regSCTLR);
bogdanm 0:9b334a45a8ff 343 }
bogdanm 0:9b334a45a8ff 344
bogdanm 0:9b334a45a8ff 345 /** \brief Enable Caches
bogdanm 0:9b334a45a8ff 346
bogdanm 0:9b334a45a8ff 347 Enable Caches
bogdanm 0:9b334a45a8ff 348 */
bogdanm 0:9b334a45a8ff 349 __STATIC_INLINE void __enable_caches(void) {
bogdanm 0:9b334a45a8ff 350 // Set I bit 12 to enable I Cache
bogdanm 0:9b334a45a8ff 351 // Set C bit 2 to enable D Cache
bogdanm 0:9b334a45a8ff 352 __set_SCTLR( __get_SCTLR() | (1 << 12) | (1 << 2));
bogdanm 0:9b334a45a8ff 353 }
bogdanm 0:9b334a45a8ff 354
bogdanm 0:9b334a45a8ff 355 /** \brief Disable Caches
bogdanm 0:9b334a45a8ff 356
bogdanm 0:9b334a45a8ff 357 Disable Caches
bogdanm 0:9b334a45a8ff 358 */
bogdanm 0:9b334a45a8ff 359 __STATIC_INLINE void __disable_caches(void) {
bogdanm 0:9b334a45a8ff 360 // Clear I bit 12 to disable I Cache
bogdanm 0:9b334a45a8ff 361 // Clear C bit 2 to disable D Cache
bogdanm 0:9b334a45a8ff 362 __set_SCTLR( __get_SCTLR() & ~(1 << 12) & ~(1 << 2));
bogdanm 0:9b334a45a8ff 363 __ISB();
bogdanm 0:9b334a45a8ff 364 }
bogdanm 0:9b334a45a8ff 365
bogdanm 0:9b334a45a8ff 366 /** \brief Enable BTAC
bogdanm 0:9b334a45a8ff 367
bogdanm 0:9b334a45a8ff 368 Enable BTAC
bogdanm 0:9b334a45a8ff 369 */
bogdanm 0:9b334a45a8ff 370 __STATIC_INLINE void __enable_btac(void) {
bogdanm 0:9b334a45a8ff 371 // Set Z bit 11 to enable branch prediction
bogdanm 0:9b334a45a8ff 372 __set_SCTLR( __get_SCTLR() | (1 << 11));
bogdanm 0:9b334a45a8ff 373 __ISB();
bogdanm 0:9b334a45a8ff 374 }
bogdanm 0:9b334a45a8ff 375
bogdanm 0:9b334a45a8ff 376 /** \brief Disable BTAC
bogdanm 0:9b334a45a8ff 377
bogdanm 0:9b334a45a8ff 378 Disable BTAC
bogdanm 0:9b334a45a8ff 379 */
bogdanm 0:9b334a45a8ff 380 __STATIC_INLINE void __disable_btac(void) {
bogdanm 0:9b334a45a8ff 381 // Clear Z bit 11 to disable branch prediction
bogdanm 0:9b334a45a8ff 382 __set_SCTLR( __get_SCTLR() & ~(1 << 11));
bogdanm 0:9b334a45a8ff 383 }
bogdanm 0:9b334a45a8ff 384
bogdanm 0:9b334a45a8ff 385
bogdanm 0:9b334a45a8ff 386 /** \brief Enable MMU
bogdanm 0:9b334a45a8ff 387
bogdanm 0:9b334a45a8ff 388 Enable MMU
bogdanm 0:9b334a45a8ff 389 */
bogdanm 0:9b334a45a8ff 390 __STATIC_INLINE void __enable_mmu(void) {
bogdanm 0:9b334a45a8ff 391 // Set M bit 0 to enable the MMU
bogdanm 0:9b334a45a8ff 392 // Set AFE bit to enable simplified access permissions model
bogdanm 0:9b334a45a8ff 393 // Clear TRE bit to disable TEX remap and A bit to disable strict alignment fault checking
bogdanm 0:9b334a45a8ff 394 __set_SCTLR( (__get_SCTLR() & ~(1 << 28) & ~(1 << 1)) | 1 | (1 << 29));
bogdanm 0:9b334a45a8ff 395 __ISB();
bogdanm 0:9b334a45a8ff 396 }
bogdanm 0:9b334a45a8ff 397
bogdanm 0:9b334a45a8ff 398 /** \brief Disable MMU
bogdanm 0:9b334a45a8ff 399
bogdanm 0:9b334a45a8ff 400 Disable MMU
bogdanm 0:9b334a45a8ff 401 */
bogdanm 0:9b334a45a8ff 402 __STATIC_INLINE void __disable_mmu(void) {
bogdanm 0:9b334a45a8ff 403 // Clear M bit 0 to disable the MMU
bogdanm 0:9b334a45a8ff 404 __set_SCTLR( __get_SCTLR() & ~1);
bogdanm 0:9b334a45a8ff 405 __ISB();
bogdanm 0:9b334a45a8ff 406 }
bogdanm 0:9b334a45a8ff 407
bogdanm 0:9b334a45a8ff 408 /******************************** TLB maintenance operations ************************************************/
bogdanm 0:9b334a45a8ff 409 /** \brief Invalidate the whole tlb
bogdanm 0:9b334a45a8ff 410
bogdanm 0:9b334a45a8ff 411 TLBIALL. Invalidate the whole tlb
bogdanm 0:9b334a45a8ff 412 */
bogdanm 0:9b334a45a8ff 413
bogdanm 0:9b334a45a8ff 414 __STATIC_INLINE void __ca9u_inv_tlb_all(void) {
bogdanm 0:9b334a45a8ff 415 register uint32_t __TLBIALL __ASM("cp15:0:c8:c7:0");
bogdanm 0:9b334a45a8ff 416 __TLBIALL = 0;
bogdanm 0:9b334a45a8ff 417 __DSB();
bogdanm 0:9b334a45a8ff 418 __ISB();
bogdanm 0:9b334a45a8ff 419 }
bogdanm 0:9b334a45a8ff 420
bogdanm 0:9b334a45a8ff 421 /******************************** BTB maintenance operations ************************************************/
bogdanm 0:9b334a45a8ff 422 /** \brief Invalidate entire branch predictor array
bogdanm 0:9b334a45a8ff 423
bogdanm 0:9b334a45a8ff 424 BPIALL. Branch Predictor Invalidate All.
bogdanm 0:9b334a45a8ff 425 */
bogdanm 0:9b334a45a8ff 426
bogdanm 0:9b334a45a8ff 427 __STATIC_INLINE void __v7_inv_btac(void) {
bogdanm 0:9b334a45a8ff 428 register uint32_t __BPIALL __ASM("cp15:0:c7:c5:6");
bogdanm 0:9b334a45a8ff 429 __BPIALL = 0;
bogdanm 0:9b334a45a8ff 430 __DSB(); //ensure completion of the invalidation
bogdanm 0:9b334a45a8ff 431 __ISB(); //ensure instruction fetch path sees new state
bogdanm 0:9b334a45a8ff 432 }
bogdanm 0:9b334a45a8ff 433
bogdanm 0:9b334a45a8ff 434
bogdanm 0:9b334a45a8ff 435 /******************************** L1 cache operations ******************************************************/
bogdanm 0:9b334a45a8ff 436
bogdanm 0:9b334a45a8ff 437 /** \brief Invalidate the whole I$
bogdanm 0:9b334a45a8ff 438
bogdanm 0:9b334a45a8ff 439 ICIALLU. Instruction Cache Invalidate All to PoU
bogdanm 0:9b334a45a8ff 440 */
bogdanm 0:9b334a45a8ff 441 __STATIC_INLINE void __v7_inv_icache_all(void) {
bogdanm 0:9b334a45a8ff 442 register uint32_t __ICIALLU __ASM("cp15:0:c7:c5:0");
bogdanm 0:9b334a45a8ff 443 __ICIALLU = 0;
bogdanm 0:9b334a45a8ff 444 __DSB(); //ensure completion of the invalidation
bogdanm 0:9b334a45a8ff 445 __ISB(); //ensure instruction fetch path sees new I cache state
bogdanm 0:9b334a45a8ff 446 }
bogdanm 0:9b334a45a8ff 447
bogdanm 0:9b334a45a8ff 448 /** \brief Clean D$ by MVA
bogdanm 0:9b334a45a8ff 449
bogdanm 0:9b334a45a8ff 450 DCCMVAC. Data cache clean by MVA to PoC
bogdanm 0:9b334a45a8ff 451 */
bogdanm 0:9b334a45a8ff 452 __STATIC_INLINE void __v7_clean_dcache_mva(void *va) {
bogdanm 0:9b334a45a8ff 453 register uint32_t __DCCMVAC __ASM("cp15:0:c7:c10:1");
bogdanm 0:9b334a45a8ff 454 __DCCMVAC = (uint32_t)va;
bogdanm 0:9b334a45a8ff 455 __DMB(); //ensure the ordering of data cache maintenance operations and their effects
bogdanm 0:9b334a45a8ff 456 }
bogdanm 0:9b334a45a8ff 457
bogdanm 0:9b334a45a8ff 458 /** \brief Invalidate D$ by MVA
bogdanm 0:9b334a45a8ff 459
bogdanm 0:9b334a45a8ff 460 DCIMVAC. Data cache invalidate by MVA to PoC
bogdanm 0:9b334a45a8ff 461 */
bogdanm 0:9b334a45a8ff 462 __STATIC_INLINE void __v7_inv_dcache_mva(void *va) {
bogdanm 0:9b334a45a8ff 463 register uint32_t __DCIMVAC __ASM("cp15:0:c7:c6:1");
bogdanm 0:9b334a45a8ff 464 __DCIMVAC = (uint32_t)va;
bogdanm 0:9b334a45a8ff 465 __DMB(); //ensure the ordering of data cache maintenance operations and their effects
bogdanm 0:9b334a45a8ff 466 }
bogdanm 0:9b334a45a8ff 467
bogdanm 0:9b334a45a8ff 468 /** \brief Clean and Invalidate D$ by MVA
bogdanm 0:9b334a45a8ff 469
bogdanm 0:9b334a45a8ff 470 DCCIMVAC. Data cache clean and invalidate by MVA to PoC
bogdanm 0:9b334a45a8ff 471 */
bogdanm 0:9b334a45a8ff 472 __STATIC_INLINE void __v7_clean_inv_dcache_mva(void *va) {
bogdanm 0:9b334a45a8ff 473 register uint32_t __DCCIMVAC __ASM("cp15:0:c7:c14:1");
bogdanm 0:9b334a45a8ff 474 __DCCIMVAC = (uint32_t)va;
bogdanm 0:9b334a45a8ff 475 __DMB(); //ensure the ordering of data cache maintenance operations and their effects
bogdanm 0:9b334a45a8ff 476 }
bogdanm 0:9b334a45a8ff 477
bogdanm 0:9b334a45a8ff 478 /** \brief Clean and Invalidate the entire data or unified cache
bogdanm 0:9b334a45a8ff 479
bogdanm 0:9b334a45a8ff 480 Generic mechanism for cleaning/invalidating the entire data or unified cache to the point of coherency.
bogdanm 0:9b334a45a8ff 481 */
bogdanm 0:9b334a45a8ff 482 #pragma push
bogdanm 0:9b334a45a8ff 483 #pragma arm
bogdanm 0:9b334a45a8ff 484 __STATIC_ASM void __v7_all_cache(uint32_t op) {
bogdanm 0:9b334a45a8ff 485 ARM
bogdanm 0:9b334a45a8ff 486
bogdanm 0:9b334a45a8ff 487 PUSH {R4-R11}
bogdanm 0:9b334a45a8ff 488
bogdanm 0:9b334a45a8ff 489 MRC p15, 1, R6, c0, c0, 1 // Read CLIDR
bogdanm 0:9b334a45a8ff 490 ANDS R3, R6, #0x07000000 // Extract coherency level
bogdanm 0:9b334a45a8ff 491 MOV R3, R3, LSR #23 // Total cache levels << 1
bogdanm 0:9b334a45a8ff 492 BEQ Finished // If 0, no need to clean
bogdanm 0:9b334a45a8ff 493
bogdanm 0:9b334a45a8ff 494 MOV R10, #0 // R10 holds current cache level << 1
bogdanm 0:9b334a45a8ff 495 Loop1 ADD R2, R10, R10, LSR #1 // R2 holds cache "Set" position
bogdanm 0:9b334a45a8ff 496 MOV R1, R6, LSR R2 // Bottom 3 bits are the Cache-type for this level
bogdanm 0:9b334a45a8ff 497 AND R1, R1, #7 // Isolate those lower 3 bits
bogdanm 0:9b334a45a8ff 498 CMP R1, #2
bogdanm 0:9b334a45a8ff 499 BLT Skip // No cache or only instruction cache at this level
bogdanm 0:9b334a45a8ff 500
bogdanm 0:9b334a45a8ff 501 MCR p15, 2, R10, c0, c0, 0 // Write the Cache Size selection register
bogdanm 0:9b334a45a8ff 502 ISB // ISB to sync the change to the CacheSizeID reg
bogdanm 0:9b334a45a8ff 503 MRC p15, 1, R1, c0, c0, 0 // Reads current Cache Size ID register
bogdanm 0:9b334a45a8ff 504 AND R2, R1, #7 // Extract the line length field
bogdanm 0:9b334a45a8ff 505 ADD R2, R2, #4 // Add 4 for the line length offset (log2 16 bytes)
bogdanm 0:9b334a45a8ff 506 LDR R4, =0x3FF
bogdanm 0:9b334a45a8ff 507 ANDS R4, R4, R1, LSR #3 // R4 is the max number on the way size (right aligned)
bogdanm 0:9b334a45a8ff 508 CLZ R5, R4 // R5 is the bit position of the way size increment
bogdanm 0:9b334a45a8ff 509 LDR R7, =0x7FFF
bogdanm 0:9b334a45a8ff 510 ANDS R7, R7, R1, LSR #13 // R7 is the max number of the index size (right aligned)
bogdanm 0:9b334a45a8ff 511
bogdanm 0:9b334a45a8ff 512 Loop2 MOV R9, R4 // R9 working copy of the max way size (right aligned)
bogdanm 0:9b334a45a8ff 513
bogdanm 0:9b334a45a8ff 514 Loop3 ORR R11, R10, R9, LSL R5 // Factor in the Way number and cache number into R11
bogdanm 0:9b334a45a8ff 515 ORR R11, R11, R7, LSL R2 // Factor in the Set number
bogdanm 0:9b334a45a8ff 516 CMP R0, #0
bogdanm 0:9b334a45a8ff 517 BNE Dccsw
bogdanm 0:9b334a45a8ff 518 MCR p15, 0, R11, c7, c6, 2 // DCISW. Invalidate by Set/Way
bogdanm 0:9b334a45a8ff 519 B cont
bogdanm 0:9b334a45a8ff 520 Dccsw CMP R0, #1
bogdanm 0:9b334a45a8ff 521 BNE Dccisw
bogdanm 0:9b334a45a8ff 522 MCR p15, 0, R11, c7, c10, 2 // DCCSW. Clean by Set/Way
bogdanm 0:9b334a45a8ff 523 B cont
bogdanm 0:9b334a45a8ff 524 Dccisw MCR p15, 0, R11, c7, c14, 2 // DCCISW. Clean and Invalidate by Set/Way
bogdanm 0:9b334a45a8ff 525 cont SUBS R9, R9, #1 // Decrement the Way number
bogdanm 0:9b334a45a8ff 526 BGE Loop3
bogdanm 0:9b334a45a8ff 527 SUBS R7, R7, #1 // Decrement the Set number
bogdanm 0:9b334a45a8ff 528 BGE Loop2
bogdanm 0:9b334a45a8ff 529 Skip ADD R10, R10, #2 // Increment the cache number
bogdanm 0:9b334a45a8ff 530 CMP R3, R10
bogdanm 0:9b334a45a8ff 531 BGT Loop1
bogdanm 0:9b334a45a8ff 532
bogdanm 0:9b334a45a8ff 533 Finished
bogdanm 0:9b334a45a8ff 534 DSB
bogdanm 0:9b334a45a8ff 535 POP {R4-R11}
bogdanm 0:9b334a45a8ff 536 BX lr
bogdanm 0:9b334a45a8ff 537
bogdanm 0:9b334a45a8ff 538 }
bogdanm 0:9b334a45a8ff 539 #pragma pop
bogdanm 0:9b334a45a8ff 540
bogdanm 0:9b334a45a8ff 541
bogdanm 0:9b334a45a8ff 542 /** \brief Invalidate the whole D$
bogdanm 0:9b334a45a8ff 543
bogdanm 0:9b334a45a8ff 544 DCISW. Invalidate by Set/Way
bogdanm 0:9b334a45a8ff 545 */
bogdanm 0:9b334a45a8ff 546
bogdanm 0:9b334a45a8ff 547 __STATIC_INLINE void __v7_inv_dcache_all(void) {
bogdanm 0:9b334a45a8ff 548 __v7_all_cache(0);
bogdanm 0:9b334a45a8ff 549 }
bogdanm 0:9b334a45a8ff 550
bogdanm 0:9b334a45a8ff 551 /** \brief Clean the whole D$
bogdanm 0:9b334a45a8ff 552
bogdanm 0:9b334a45a8ff 553 DCCSW. Clean by Set/Way
bogdanm 0:9b334a45a8ff 554 */
bogdanm 0:9b334a45a8ff 555
bogdanm 0:9b334a45a8ff 556 __STATIC_INLINE void __v7_clean_dcache_all(void) {
bogdanm 0:9b334a45a8ff 557 __v7_all_cache(1);
bogdanm 0:9b334a45a8ff 558 }
bogdanm 0:9b334a45a8ff 559
bogdanm 0:9b334a45a8ff 560 /** \brief Clean and invalidate the whole D$
bogdanm 0:9b334a45a8ff 561
bogdanm 0:9b334a45a8ff 562 DCCISW. Clean and Invalidate by Set/Way
bogdanm 0:9b334a45a8ff 563 */
bogdanm 0:9b334a45a8ff 564
bogdanm 0:9b334a45a8ff 565 __STATIC_INLINE void __v7_clean_inv_dcache_all(void) {
bogdanm 0:9b334a45a8ff 566 __v7_all_cache(2);
bogdanm 0:9b334a45a8ff 567 }
bogdanm 0:9b334a45a8ff 568
bogdanm 0:9b334a45a8ff 569 #include "core_ca_mmu.h"
bogdanm 0:9b334a45a8ff 570
bogdanm 0:9b334a45a8ff 571 #elif (defined (__ICCARM__)) /*---------------- ICC Compiler ---------------------*/
bogdanm 0:9b334a45a8ff 572
bogdanm 0:9b334a45a8ff 573 #error IAR Compiler support not implemented for Cortex-A
bogdanm 0:9b334a45a8ff 574
bogdanm 0:9b334a45a8ff 575 #elif (defined (__GNUC__)) /*------------------ GNU Compiler ---------------------*/
bogdanm 0:9b334a45a8ff 576 /* GNU gcc specific functions */
bogdanm 0:9b334a45a8ff 577
bogdanm 0:9b334a45a8ff 578 #define MODE_USR 0x10
bogdanm 0:9b334a45a8ff 579 #define MODE_FIQ 0x11
bogdanm 0:9b334a45a8ff 580 #define MODE_IRQ 0x12
bogdanm 0:9b334a45a8ff 581 #define MODE_SVC 0x13
bogdanm 0:9b334a45a8ff 582 #define MODE_MON 0x16
bogdanm 0:9b334a45a8ff 583 #define MODE_ABT 0x17
bogdanm 0:9b334a45a8ff 584 #define MODE_HYP 0x1A
bogdanm 0:9b334a45a8ff 585 #define MODE_UND 0x1B
bogdanm 0:9b334a45a8ff 586 #define MODE_SYS 0x1F
bogdanm 0:9b334a45a8ff 587
bogdanm 0:9b334a45a8ff 588
bogdanm 0:9b334a45a8ff 589 __attribute__( ( always_inline ) ) __STATIC_INLINE void __enable_irq(void)
bogdanm 0:9b334a45a8ff 590 {
bogdanm 0:9b334a45a8ff 591 __ASM volatile ("cpsie i");
bogdanm 0:9b334a45a8ff 592 }
bogdanm 0:9b334a45a8ff 593
bogdanm 0:9b334a45a8ff 594 /** \brief Disable IRQ Interrupts
bogdanm 0:9b334a45a8ff 595
bogdanm 0:9b334a45a8ff 596 This function disables IRQ interrupts by setting the I-bit in the CPSR.
bogdanm 0:9b334a45a8ff 597 Can only be executed in Privileged modes.
bogdanm 0:9b334a45a8ff 598 */
bogdanm 0:9b334a45a8ff 599 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __disable_irq(void)
bogdanm 0:9b334a45a8ff 600 {
bogdanm 0:9b334a45a8ff 601 uint32_t result;
bogdanm 0:9b334a45a8ff 602
bogdanm 0:9b334a45a8ff 603 __ASM volatile ("mrs %0, cpsr" : "=r" (result));
bogdanm 0:9b334a45a8ff 604 __ASM volatile ("cpsid i");
bogdanm 0:9b334a45a8ff 605 return(result & 0x80);
bogdanm 0:9b334a45a8ff 606 }
bogdanm 0:9b334a45a8ff 607
bogdanm 0:9b334a45a8ff 608
bogdanm 0:9b334a45a8ff 609 /** \brief Get APSR Register
bogdanm 0:9b334a45a8ff 610
bogdanm 0:9b334a45a8ff 611 This function returns the content of the APSR Register.
bogdanm 0:9b334a45a8ff 612
bogdanm 0:9b334a45a8ff 613 \return APSR Register value
bogdanm 0:9b334a45a8ff 614 */
bogdanm 0:9b334a45a8ff 615 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_APSR(void)
bogdanm 0:9b334a45a8ff 616 {
bogdanm 0:9b334a45a8ff 617 #if 1
bogdanm 0:9b334a45a8ff 618 register uint32_t __regAPSR;
bogdanm 0:9b334a45a8ff 619 __ASM volatile ("mrs %0, apsr" : "=r" (__regAPSR) );
bogdanm 0:9b334a45a8ff 620 #else
bogdanm 0:9b334a45a8ff 621 register uint32_t __regAPSR __ASM("apsr");
bogdanm 0:9b334a45a8ff 622 #endif
bogdanm 0:9b334a45a8ff 623 return(__regAPSR);
bogdanm 0:9b334a45a8ff 624 }
bogdanm 0:9b334a45a8ff 625
bogdanm 0:9b334a45a8ff 626
bogdanm 0:9b334a45a8ff 627 /** \brief Get CPSR Register
bogdanm 0:9b334a45a8ff 628
bogdanm 0:9b334a45a8ff 629 This function returns the content of the CPSR Register.
bogdanm 0:9b334a45a8ff 630
bogdanm 0:9b334a45a8ff 631 \return CPSR Register value
bogdanm 0:9b334a45a8ff 632 */
bogdanm 0:9b334a45a8ff 633 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_CPSR(void)
bogdanm 0:9b334a45a8ff 634 {
bogdanm 0:9b334a45a8ff 635 #if 1
bogdanm 0:9b334a45a8ff 636 register uint32_t __regCPSR;
bogdanm 0:9b334a45a8ff 637 __ASM volatile ("mrs %0, cpsr" : "=r" (__regCPSR));
bogdanm 0:9b334a45a8ff 638 #else
bogdanm 0:9b334a45a8ff 639 register uint32_t __regCPSR __ASM("cpsr");
bogdanm 0:9b334a45a8ff 640 #endif
bogdanm 0:9b334a45a8ff 641 return(__regCPSR);
bogdanm 0:9b334a45a8ff 642 }
bogdanm 0:9b334a45a8ff 643
bogdanm 0:9b334a45a8ff 644 #if 0
bogdanm 0:9b334a45a8ff 645 /** \brief Set Stack Pointer
bogdanm 0:9b334a45a8ff 646
bogdanm 0:9b334a45a8ff 647 This function assigns the given value to the current stack pointer.
bogdanm 0:9b334a45a8ff 648
bogdanm 0:9b334a45a8ff 649 \param [in] topOfStack Stack Pointer value to set
bogdanm 0:9b334a45a8ff 650 */
bogdanm 0:9b334a45a8ff 651 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_SP(uint32_t topOfStack)
bogdanm 0:9b334a45a8ff 652 {
bogdanm 0:9b334a45a8ff 653 register uint32_t __regSP __ASM("sp");
bogdanm 0:9b334a45a8ff 654 __regSP = topOfStack;
bogdanm 0:9b334a45a8ff 655 }
bogdanm 0:9b334a45a8ff 656 #endif
bogdanm 0:9b334a45a8ff 657
bogdanm 0:9b334a45a8ff 658 /** \brief Get link register
bogdanm 0:9b334a45a8ff 659
bogdanm 0:9b334a45a8ff 660 This function returns the value of the link register
bogdanm 0:9b334a45a8ff 661
bogdanm 0:9b334a45a8ff 662 \return Value of link register
bogdanm 0:9b334a45a8ff 663 */
bogdanm 0:9b334a45a8ff 664 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_LR(void)
bogdanm 0:9b334a45a8ff 665 {
bogdanm 0:9b334a45a8ff 666 register uint32_t __reglr __ASM("lr");
bogdanm 0:9b334a45a8ff 667 return(__reglr);
bogdanm 0:9b334a45a8ff 668 }
bogdanm 0:9b334a45a8ff 669
bogdanm 0:9b334a45a8ff 670 #if 0
bogdanm 0:9b334a45a8ff 671 /** \brief Set link register
bogdanm 0:9b334a45a8ff 672
bogdanm 0:9b334a45a8ff 673 This function sets the value of the link register
bogdanm 0:9b334a45a8ff 674
bogdanm 0:9b334a45a8ff 675 \param [in] lr LR value to set
bogdanm 0:9b334a45a8ff 676 */
bogdanm 0:9b334a45a8ff 677 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_LR(uint32_t lr)
bogdanm 0:9b334a45a8ff 678 {
bogdanm 0:9b334a45a8ff 679 register uint32_t __reglr __ASM("lr");
bogdanm 0:9b334a45a8ff 680 __reglr = lr;
bogdanm 0:9b334a45a8ff 681 }
bogdanm 0:9b334a45a8ff 682 #endif
bogdanm 0:9b334a45a8ff 683
bogdanm 0:9b334a45a8ff 684 /** \brief Set Process Stack Pointer
bogdanm 0:9b334a45a8ff 685
bogdanm 0:9b334a45a8ff 686 This function assigns the given value to the USR/SYS Stack Pointer (PSP).
bogdanm 0:9b334a45a8ff 687
bogdanm 0:9b334a45a8ff 688 \param [in] topOfProcStack USR/SYS Stack Pointer value to set
bogdanm 0:9b334a45a8ff 689 */
bogdanm 0:9b334a45a8ff 690 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_PSP(uint32_t topOfProcStack)
bogdanm 0:9b334a45a8ff 691 {
bogdanm 0:9b334a45a8ff 692 __asm__ volatile (
bogdanm 0:9b334a45a8ff 693 ".ARM;"
bogdanm 0:9b334a45a8ff 694 ".eabi_attribute Tag_ABI_align8_preserved,1;"
bogdanm 0:9b334a45a8ff 695
bogdanm 0:9b334a45a8ff 696 "BIC R0, R0, #7;" /* ;ensure stack is 8-byte aligned */
bogdanm 0:9b334a45a8ff 697 "MRS R1, CPSR;"
bogdanm 0:9b334a45a8ff 698 "CPS %0;" /* ;no effect in USR mode */
bogdanm 0:9b334a45a8ff 699 "MOV SP, R0;"
bogdanm 0:9b334a45a8ff 700 "MSR CPSR_c, R1;" /* ;no effect in USR mode */
bogdanm 0:9b334a45a8ff 701 "ISB;"
bogdanm 0:9b334a45a8ff 702 //"BX LR;"
bogdanm 0:9b334a45a8ff 703 :
bogdanm 0:9b334a45a8ff 704 : "i"(MODE_SYS)
bogdanm 0:9b334a45a8ff 705 : "r0", "r1");
bogdanm 0:9b334a45a8ff 706 return;
bogdanm 0:9b334a45a8ff 707 }
bogdanm 0:9b334a45a8ff 708
bogdanm 0:9b334a45a8ff 709 /** \brief Set User Mode
bogdanm 0:9b334a45a8ff 710
bogdanm 0:9b334a45a8ff 711 This function changes the processor state to User Mode
bogdanm 0:9b334a45a8ff 712 */
bogdanm 0:9b334a45a8ff 713 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_CPS_USR(void)
bogdanm 0:9b334a45a8ff 714 {
bogdanm 0:9b334a45a8ff 715 __asm__ volatile (
bogdanm 0:9b334a45a8ff 716 ".ARM;"
bogdanm 0:9b334a45a8ff 717
bogdanm 0:9b334a45a8ff 718 "CPS %0;"
bogdanm 0:9b334a45a8ff 719 //"BX LR;"
bogdanm 0:9b334a45a8ff 720 :
bogdanm 0:9b334a45a8ff 721 : "i"(MODE_USR)
bogdanm 0:9b334a45a8ff 722 : );
bogdanm 0:9b334a45a8ff 723 return;
bogdanm 0:9b334a45a8ff 724 }
bogdanm 0:9b334a45a8ff 725
bogdanm 0:9b334a45a8ff 726
bogdanm 0:9b334a45a8ff 727 /** \brief Enable FIQ
bogdanm 0:9b334a45a8ff 728
bogdanm 0:9b334a45a8ff 729 This function enables FIQ interrupts by clearing the F-bit in the CPSR.
bogdanm 0:9b334a45a8ff 730 Can only be executed in Privileged modes.
bogdanm 0:9b334a45a8ff 731 */
bogdanm 0:9b334a45a8ff 732 #define __enable_fault_irq() __asm__ volatile ("cpsie f")
bogdanm 0:9b334a45a8ff 733
bogdanm 0:9b334a45a8ff 734
bogdanm 0:9b334a45a8ff 735 /** \brief Disable FIQ
bogdanm 0:9b334a45a8ff 736
bogdanm 0:9b334a45a8ff 737 This function disables FIQ interrupts by setting the F-bit in the CPSR.
bogdanm 0:9b334a45a8ff 738 Can only be executed in Privileged modes.
bogdanm 0:9b334a45a8ff 739 */
bogdanm 0:9b334a45a8ff 740 #define __disable_fault_irq() __asm__ volatile ("cpsid f")
bogdanm 0:9b334a45a8ff 741
bogdanm 0:9b334a45a8ff 742
bogdanm 0:9b334a45a8ff 743 /** \brief Get FPSCR
bogdanm 0:9b334a45a8ff 744
bogdanm 0:9b334a45a8ff 745 This function returns the current value of the Floating Point Status/Control register.
bogdanm 0:9b334a45a8ff 746
bogdanm 0:9b334a45a8ff 747 \return Floating Point Status/Control register value
bogdanm 0:9b334a45a8ff 748 */
bogdanm 0:9b334a45a8ff 749 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_FPSCR(void)
bogdanm 0:9b334a45a8ff 750 {
bogdanm 0:9b334a45a8ff 751 #if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
bogdanm 0:9b334a45a8ff 752 #if 1
bogdanm 0:9b334a45a8ff 753 uint32_t result;
bogdanm 0:9b334a45a8ff 754
bogdanm 0:9b334a45a8ff 755 __ASM volatile ("vmrs %0, fpscr" : "=r" (result) );
bogdanm 0:9b334a45a8ff 756 return (result);
bogdanm 0:9b334a45a8ff 757 #else
bogdanm 0:9b334a45a8ff 758 register uint32_t __regfpscr __ASM("fpscr");
bogdanm 0:9b334a45a8ff 759 return(__regfpscr);
bogdanm 0:9b334a45a8ff 760 #endif
bogdanm 0:9b334a45a8ff 761 #else
bogdanm 0:9b334a45a8ff 762 return(0);
bogdanm 0:9b334a45a8ff 763 #endif
bogdanm 0:9b334a45a8ff 764 }
bogdanm 0:9b334a45a8ff 765
bogdanm 0:9b334a45a8ff 766
bogdanm 0:9b334a45a8ff 767 /** \brief Set FPSCR
bogdanm 0:9b334a45a8ff 768
bogdanm 0:9b334a45a8ff 769 This function assigns the given value to the Floating Point Status/Control register.
bogdanm 0:9b334a45a8ff 770
bogdanm 0:9b334a45a8ff 771 \param [in] fpscr Floating Point Status/Control value to set
bogdanm 0:9b334a45a8ff 772 */
bogdanm 0:9b334a45a8ff 773 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_FPSCR(uint32_t fpscr)
bogdanm 0:9b334a45a8ff 774 {
bogdanm 0:9b334a45a8ff 775 #if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
bogdanm 0:9b334a45a8ff 776 #if 1
bogdanm 0:9b334a45a8ff 777 __ASM volatile ("vmsr fpscr, %0" : : "r" (fpscr) );
bogdanm 0:9b334a45a8ff 778 #else
bogdanm 0:9b334a45a8ff 779 register uint32_t __regfpscr __ASM("fpscr");
bogdanm 0:9b334a45a8ff 780 __regfpscr = (fpscr);
bogdanm 0:9b334a45a8ff 781 #endif
bogdanm 0:9b334a45a8ff 782 #endif
bogdanm 0:9b334a45a8ff 783 }
bogdanm 0:9b334a45a8ff 784
bogdanm 0:9b334a45a8ff 785 /** \brief Get FPEXC
bogdanm 0:9b334a45a8ff 786
bogdanm 0:9b334a45a8ff 787 This function returns the current value of the Floating Point Exception Control register.
bogdanm 0:9b334a45a8ff 788
bogdanm 0:9b334a45a8ff 789 \return Floating Point Exception Control register value
bogdanm 0:9b334a45a8ff 790 */
bogdanm 0:9b334a45a8ff 791 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_FPEXC(void)
bogdanm 0:9b334a45a8ff 792 {
bogdanm 0:9b334a45a8ff 793 #if (__FPU_PRESENT == 1)
bogdanm 0:9b334a45a8ff 794 #if 1
bogdanm 0:9b334a45a8ff 795 uint32_t result;
bogdanm 0:9b334a45a8ff 796
bogdanm 0:9b334a45a8ff 797 __ASM volatile ("vmrs %0, fpexc" : "=r" (result));
bogdanm 0:9b334a45a8ff 798 return (result);
bogdanm 0:9b334a45a8ff 799 #else
bogdanm 0:9b334a45a8ff 800 register uint32_t __regfpexc __ASM("fpexc");
bogdanm 0:9b334a45a8ff 801 return(__regfpexc);
bogdanm 0:9b334a45a8ff 802 #endif
bogdanm 0:9b334a45a8ff 803 #else
bogdanm 0:9b334a45a8ff 804 return(0);
bogdanm 0:9b334a45a8ff 805 #endif
bogdanm 0:9b334a45a8ff 806 }
bogdanm 0:9b334a45a8ff 807
bogdanm 0:9b334a45a8ff 808
bogdanm 0:9b334a45a8ff 809 /** \brief Set FPEXC
bogdanm 0:9b334a45a8ff 810
bogdanm 0:9b334a45a8ff 811 This function assigns the given value to the Floating Point Exception Control register.
bogdanm 0:9b334a45a8ff 812
bogdanm 0:9b334a45a8ff 813 \param [in] fpscr Floating Point Exception Control value to set
bogdanm 0:9b334a45a8ff 814 */
bogdanm 0:9b334a45a8ff 815 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_FPEXC(uint32_t fpexc)
bogdanm 0:9b334a45a8ff 816 {
bogdanm 0:9b334a45a8ff 817 #if (__FPU_PRESENT == 1)
bogdanm 0:9b334a45a8ff 818 #if 1
bogdanm 0:9b334a45a8ff 819 __ASM volatile ("vmsr fpexc, %0" : : "r" (fpexc));
bogdanm 0:9b334a45a8ff 820 #else
bogdanm 0:9b334a45a8ff 821 register uint32_t __regfpexc __ASM("fpexc");
bogdanm 0:9b334a45a8ff 822 __regfpexc = (fpexc);
bogdanm 0:9b334a45a8ff 823 #endif
bogdanm 0:9b334a45a8ff 824 #endif
bogdanm 0:9b334a45a8ff 825 }
bogdanm 0:9b334a45a8ff 826
bogdanm 0:9b334a45a8ff 827 /** \brief Get CPACR
bogdanm 0:9b334a45a8ff 828
bogdanm 0:9b334a45a8ff 829 This function returns the current value of the Coprocessor Access Control register.
bogdanm 0:9b334a45a8ff 830
bogdanm 0:9b334a45a8ff 831 \return Coprocessor Access Control register value
bogdanm 0:9b334a45a8ff 832 */
bogdanm 0:9b334a45a8ff 833 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_CPACR(void)
bogdanm 0:9b334a45a8ff 834 {
bogdanm 0:9b334a45a8ff 835 #if 1
bogdanm 0:9b334a45a8ff 836 register uint32_t __regCPACR;
bogdanm 0:9b334a45a8ff 837 __ASM volatile ("mrc p15, 0, %0, c1, c0, 2" : "=r" (__regCPACR));
bogdanm 0:9b334a45a8ff 838 #else
bogdanm 0:9b334a45a8ff 839 register uint32_t __regCPACR __ASM("cp15:0:c1:c0:2");
bogdanm 0:9b334a45a8ff 840 #endif
bogdanm 0:9b334a45a8ff 841 return __regCPACR;
bogdanm 0:9b334a45a8ff 842 }
bogdanm 0:9b334a45a8ff 843
bogdanm 0:9b334a45a8ff 844 /** \brief Set CPACR
bogdanm 0:9b334a45a8ff 845
bogdanm 0:9b334a45a8ff 846 This function assigns the given value to the Coprocessor Access Control register.
bogdanm 0:9b334a45a8ff 847
bogdanm 0:9b334a45a8ff 848 \param [in] cpacr Coprocessor Acccess Control value to set
bogdanm 0:9b334a45a8ff 849 */
bogdanm 0:9b334a45a8ff 850 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_CPACR(uint32_t cpacr)
bogdanm 0:9b334a45a8ff 851 {
bogdanm 0:9b334a45a8ff 852 #if 1
bogdanm 0:9b334a45a8ff 853 __ASM volatile ("mcr p15, 0, %0, c1, c0, 2" : : "r" (cpacr));
bogdanm 0:9b334a45a8ff 854 #else
bogdanm 0:9b334a45a8ff 855 register uint32_t __regCPACR __ASM("cp15:0:c1:c0:2");
bogdanm 0:9b334a45a8ff 856 __regCPACR = cpacr;
bogdanm 0:9b334a45a8ff 857 #endif
bogdanm 0:9b334a45a8ff 858 __ISB();
bogdanm 0:9b334a45a8ff 859 }
bogdanm 0:9b334a45a8ff 860
bogdanm 0:9b334a45a8ff 861 /** \brief Get CBAR
bogdanm 0:9b334a45a8ff 862
bogdanm 0:9b334a45a8ff 863 This function returns the value of the Configuration Base Address register.
bogdanm 0:9b334a45a8ff 864
bogdanm 0:9b334a45a8ff 865 \return Configuration Base Address register value
bogdanm 0:9b334a45a8ff 866 */
bogdanm 0:9b334a45a8ff 867 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_CBAR() {
bogdanm 0:9b334a45a8ff 868 #if 1
bogdanm 0:9b334a45a8ff 869 register uint32_t __regCBAR;
bogdanm 0:9b334a45a8ff 870 __ASM volatile ("mrc p15, 4, %0, c15, c0, 0" : "=r" (__regCBAR));
bogdanm 0:9b334a45a8ff 871 #else
bogdanm 0:9b334a45a8ff 872 register uint32_t __regCBAR __ASM("cp15:4:c15:c0:0");
bogdanm 0:9b334a45a8ff 873 #endif
bogdanm 0:9b334a45a8ff 874 return(__regCBAR);
bogdanm 0:9b334a45a8ff 875 }
bogdanm 0:9b334a45a8ff 876
bogdanm 0:9b334a45a8ff 877 /** \brief Get TTBR0
bogdanm 0:9b334a45a8ff 878
bogdanm 0:9b334a45a8ff 879 This function returns the value of the Translation Table Base Register 0.
bogdanm 0:9b334a45a8ff 880
bogdanm 0:9b334a45a8ff 881 \return Translation Table Base Register 0 value
bogdanm 0:9b334a45a8ff 882 */
bogdanm 0:9b334a45a8ff 883 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_TTBR0() {
bogdanm 0:9b334a45a8ff 884 #if 1
bogdanm 0:9b334a45a8ff 885 register uint32_t __regTTBR0;
bogdanm 0:9b334a45a8ff 886 __ASM volatile ("mrc p15, 0, %0, c2, c0, 0" : "=r" (__regTTBR0));
bogdanm 0:9b334a45a8ff 887 #else
bogdanm 0:9b334a45a8ff 888 register uint32_t __regTTBR0 __ASM("cp15:0:c2:c0:0");
bogdanm 0:9b334a45a8ff 889 #endif
bogdanm 0:9b334a45a8ff 890 return(__regTTBR0);
bogdanm 0:9b334a45a8ff 891 }
bogdanm 0:9b334a45a8ff 892
bogdanm 0:9b334a45a8ff 893 /** \brief Set TTBR0
bogdanm 0:9b334a45a8ff 894
bogdanm 0:9b334a45a8ff 895 This function assigns the given value to the Translation Table Base Register 0.
bogdanm 0:9b334a45a8ff 896
bogdanm 0:9b334a45a8ff 897 \param [in] ttbr0 Translation Table Base Register 0 value to set
bogdanm 0:9b334a45a8ff 898 */
bogdanm 0:9b334a45a8ff 899 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_TTBR0(uint32_t ttbr0) {
bogdanm 0:9b334a45a8ff 900 #if 1
bogdanm 0:9b334a45a8ff 901 __ASM volatile ("mcr p15, 0, %0, c2, c0, 0" : : "r" (ttbr0));
bogdanm 0:9b334a45a8ff 902 #else
bogdanm 0:9b334a45a8ff 903 register uint32_t __regTTBR0 __ASM("cp15:0:c2:c0:0");
bogdanm 0:9b334a45a8ff 904 __regTTBR0 = ttbr0;
bogdanm 0:9b334a45a8ff 905 #endif
bogdanm 0:9b334a45a8ff 906 __ISB();
bogdanm 0:9b334a45a8ff 907 }
bogdanm 0:9b334a45a8ff 908
bogdanm 0:9b334a45a8ff 909 /** \brief Get DACR
bogdanm 0:9b334a45a8ff 910
bogdanm 0:9b334a45a8ff 911 This function returns the value of the Domain Access Control Register.
bogdanm 0:9b334a45a8ff 912
bogdanm 0:9b334a45a8ff 913 \return Domain Access Control Register value
bogdanm 0:9b334a45a8ff 914 */
bogdanm 0:9b334a45a8ff 915 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_DACR() {
bogdanm 0:9b334a45a8ff 916 #if 1
bogdanm 0:9b334a45a8ff 917 register uint32_t __regDACR;
bogdanm 0:9b334a45a8ff 918 __ASM volatile ("mrc p15, 0, %0, c3, c0, 0" : "=r" (__regDACR));
bogdanm 0:9b334a45a8ff 919 #else
bogdanm 0:9b334a45a8ff 920 register uint32_t __regDACR __ASM("cp15:0:c3:c0:0");
bogdanm 0:9b334a45a8ff 921 #endif
bogdanm 0:9b334a45a8ff 922 return(__regDACR);
bogdanm 0:9b334a45a8ff 923 }
bogdanm 0:9b334a45a8ff 924
bogdanm 0:9b334a45a8ff 925 /** \brief Set DACR
bogdanm 0:9b334a45a8ff 926
bogdanm 0:9b334a45a8ff 927 This function assigns the given value to the Domain Access Control Register.
bogdanm 0:9b334a45a8ff 928
bogdanm 0:9b334a45a8ff 929 \param [in] dacr Domain Access Control Register value to set
bogdanm 0:9b334a45a8ff 930 */
bogdanm 0:9b334a45a8ff 931 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_DACR(uint32_t dacr) {
bogdanm 0:9b334a45a8ff 932 #if 1
bogdanm 0:9b334a45a8ff 933 __ASM volatile ("mcr p15, 0, %0, c3, c0, 0" : : "r" (dacr));
bogdanm 0:9b334a45a8ff 934 #else
bogdanm 0:9b334a45a8ff 935 register uint32_t __regDACR __ASM("cp15:0:c3:c0:0");
bogdanm 0:9b334a45a8ff 936 __regDACR = dacr;
bogdanm 0:9b334a45a8ff 937 #endif
bogdanm 0:9b334a45a8ff 938 __ISB();
bogdanm 0:9b334a45a8ff 939 }
bogdanm 0:9b334a45a8ff 940
bogdanm 0:9b334a45a8ff 941 /******************************** Cache and BTAC enable ****************************************************/
bogdanm 0:9b334a45a8ff 942
bogdanm 0:9b334a45a8ff 943 /** \brief Set SCTLR
bogdanm 0:9b334a45a8ff 944
bogdanm 0:9b334a45a8ff 945 This function assigns the given value to the System Control Register.
bogdanm 0:9b334a45a8ff 946
bogdanm 0:9b334a45a8ff 947 \param [in] sctlr System Control Register value to set
bogdanm 0:9b334a45a8ff 948 */
bogdanm 0:9b334a45a8ff 949 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_SCTLR(uint32_t sctlr)
bogdanm 0:9b334a45a8ff 950 {
bogdanm 0:9b334a45a8ff 951 #if 1
bogdanm 0:9b334a45a8ff 952 __ASM volatile ("mcr p15, 0, %0, c1, c0, 0" : : "r" (sctlr));
bogdanm 0:9b334a45a8ff 953 #else
bogdanm 0:9b334a45a8ff 954 register uint32_t __regSCTLR __ASM("cp15:0:c1:c0:0");
bogdanm 0:9b334a45a8ff 955 __regSCTLR = sctlr;
bogdanm 0:9b334a45a8ff 956 #endif
bogdanm 0:9b334a45a8ff 957 }
bogdanm 0:9b334a45a8ff 958
bogdanm 0:9b334a45a8ff 959 /** \brief Get SCTLR
bogdanm 0:9b334a45a8ff 960
bogdanm 0:9b334a45a8ff 961 This function returns the value of the System Control Register.
bogdanm 0:9b334a45a8ff 962
bogdanm 0:9b334a45a8ff 963 \return System Control Register value
bogdanm 0:9b334a45a8ff 964 */
bogdanm 0:9b334a45a8ff 965 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_SCTLR() {
bogdanm 0:9b334a45a8ff 966 #if 1
bogdanm 0:9b334a45a8ff 967 register uint32_t __regSCTLR;
bogdanm 0:9b334a45a8ff 968 __ASM volatile ("mrc p15, 0, %0, c1, c0, 0" : "=r" (__regSCTLR));
bogdanm 0:9b334a45a8ff 969 #else
bogdanm 0:9b334a45a8ff 970 register uint32_t __regSCTLR __ASM("cp15:0:c1:c0:0");
bogdanm 0:9b334a45a8ff 971 #endif
bogdanm 0:9b334a45a8ff 972 return(__regSCTLR);
bogdanm 0:9b334a45a8ff 973 }
bogdanm 0:9b334a45a8ff 974
bogdanm 0:9b334a45a8ff 975 /** \brief Enable Caches
bogdanm 0:9b334a45a8ff 976
bogdanm 0:9b334a45a8ff 977 Enable Caches
bogdanm 0:9b334a45a8ff 978 */
bogdanm 0:9b334a45a8ff 979 __attribute__( ( always_inline ) ) __STATIC_INLINE void __enable_caches(void) {
bogdanm 0:9b334a45a8ff 980 // Set I bit 12 to enable I Cache
bogdanm 0:9b334a45a8ff 981 // Set C bit 2 to enable D Cache
bogdanm 0:9b334a45a8ff 982 __set_SCTLR( __get_SCTLR() | (1 << 12) | (1 << 2));
bogdanm 0:9b334a45a8ff 983 }
bogdanm 0:9b334a45a8ff 984
bogdanm 0:9b334a45a8ff 985 /** \brief Disable Caches
bogdanm 0:9b334a45a8ff 986
bogdanm 0:9b334a45a8ff 987 Disable Caches
bogdanm 0:9b334a45a8ff 988 */
bogdanm 0:9b334a45a8ff 989 __attribute__( ( always_inline ) ) __STATIC_INLINE void __disable_caches(void) {
bogdanm 0:9b334a45a8ff 990 // Clear I bit 12 to disable I Cache
bogdanm 0:9b334a45a8ff 991 // Clear C bit 2 to disable D Cache
bogdanm 0:9b334a45a8ff 992 __set_SCTLR( __get_SCTLR() & ~(1 << 12) & ~(1 << 2));
bogdanm 0:9b334a45a8ff 993 __ISB();
bogdanm 0:9b334a45a8ff 994 }
bogdanm 0:9b334a45a8ff 995
bogdanm 0:9b334a45a8ff 996 /** \brief Enable BTAC
bogdanm 0:9b334a45a8ff 997
bogdanm 0:9b334a45a8ff 998 Enable BTAC
bogdanm 0:9b334a45a8ff 999 */
bogdanm 0:9b334a45a8ff 1000 __attribute__( ( always_inline ) ) __STATIC_INLINE void __enable_btac(void) {
bogdanm 0:9b334a45a8ff 1001 // Set Z bit 11 to enable branch prediction
bogdanm 0:9b334a45a8ff 1002 __set_SCTLR( __get_SCTLR() | (1 << 11));
bogdanm 0:9b334a45a8ff 1003 __ISB();
bogdanm 0:9b334a45a8ff 1004 }
bogdanm 0:9b334a45a8ff 1005
bogdanm 0:9b334a45a8ff 1006 /** \brief Disable BTAC
bogdanm 0:9b334a45a8ff 1007
bogdanm 0:9b334a45a8ff 1008 Disable BTAC
bogdanm 0:9b334a45a8ff 1009 */
bogdanm 0:9b334a45a8ff 1010 __attribute__( ( always_inline ) ) __STATIC_INLINE void __disable_btac(void) {
bogdanm 0:9b334a45a8ff 1011 // Clear Z bit 11 to disable branch prediction
bogdanm 0:9b334a45a8ff 1012 __set_SCTLR( __get_SCTLR() & ~(1 << 11));
bogdanm 0:9b334a45a8ff 1013 }
bogdanm 0:9b334a45a8ff 1014
bogdanm 0:9b334a45a8ff 1015
bogdanm 0:9b334a45a8ff 1016 /** \brief Enable MMU
bogdanm 0:9b334a45a8ff 1017
bogdanm 0:9b334a45a8ff 1018 Enable MMU
bogdanm 0:9b334a45a8ff 1019 */
bogdanm 0:9b334a45a8ff 1020 __attribute__( ( always_inline ) ) __STATIC_INLINE void __enable_mmu(void) {
bogdanm 0:9b334a45a8ff 1021 // Set M bit 0 to enable the MMU
bogdanm 0:9b334a45a8ff 1022 // Set AFE bit to enable simplified access permissions model
bogdanm 0:9b334a45a8ff 1023 // Clear TRE bit to disable TEX remap and A bit to disable strict alignment fault checking
bogdanm 0:9b334a45a8ff 1024 __set_SCTLR( (__get_SCTLR() & ~(1 << 28) & ~(1 << 1)) | 1 | (1 << 29));
bogdanm 0:9b334a45a8ff 1025 __ISB();
bogdanm 0:9b334a45a8ff 1026 }
bogdanm 0:9b334a45a8ff 1027
bogdanm 0:9b334a45a8ff 1028 /** \brief Disable MMU
bogdanm 0:9b334a45a8ff 1029
bogdanm 0:9b334a45a8ff 1030 Disable MMU
bogdanm 0:9b334a45a8ff 1031 */
bogdanm 0:9b334a45a8ff 1032 __attribute__( ( always_inline ) ) __STATIC_INLINE void __disable_mmu(void) {
bogdanm 0:9b334a45a8ff 1033 // Clear M bit 0 to disable the MMU
bogdanm 0:9b334a45a8ff 1034 __set_SCTLR( __get_SCTLR() & ~1);
bogdanm 0:9b334a45a8ff 1035 __ISB();
bogdanm 0:9b334a45a8ff 1036 }
bogdanm 0:9b334a45a8ff 1037
bogdanm 0:9b334a45a8ff 1038 /******************************** TLB maintenance operations ************************************************/
bogdanm 0:9b334a45a8ff 1039 /** \brief Invalidate the whole tlb
bogdanm 0:9b334a45a8ff 1040
bogdanm 0:9b334a45a8ff 1041 TLBIALL. Invalidate the whole tlb
bogdanm 0:9b334a45a8ff 1042 */
bogdanm 0:9b334a45a8ff 1043
bogdanm 0:9b334a45a8ff 1044 __attribute__( ( always_inline ) ) __STATIC_INLINE void __ca9u_inv_tlb_all(void) {
bogdanm 0:9b334a45a8ff 1045 #if 1
bogdanm 0:9b334a45a8ff 1046 __ASM volatile ("mcr p15, 0, %0, c8, c7, 0" : : "r" (0));
bogdanm 0:9b334a45a8ff 1047 #else
bogdanm 0:9b334a45a8ff 1048 register uint32_t __TLBIALL __ASM("cp15:0:c8:c7:0");
bogdanm 0:9b334a45a8ff 1049 __TLBIALL = 0;
bogdanm 0:9b334a45a8ff 1050 #endif
bogdanm 0:9b334a45a8ff 1051 __DSB();
bogdanm 0:9b334a45a8ff 1052 __ISB();
bogdanm 0:9b334a45a8ff 1053 }
bogdanm 0:9b334a45a8ff 1054
bogdanm 0:9b334a45a8ff 1055 /******************************** BTB maintenance operations ************************************************/
bogdanm 0:9b334a45a8ff 1056 /** \brief Invalidate entire branch predictor array
bogdanm 0:9b334a45a8ff 1057
bogdanm 0:9b334a45a8ff 1058 BPIALL. Branch Predictor Invalidate All.
bogdanm 0:9b334a45a8ff 1059 */
bogdanm 0:9b334a45a8ff 1060
bogdanm 0:9b334a45a8ff 1061 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_btac(void) {
bogdanm 0:9b334a45a8ff 1062 #if 1
bogdanm 0:9b334a45a8ff 1063 __ASM volatile ("mcr p15, 0, %0, c7, c5, 6" : : "r" (0));
bogdanm 0:9b334a45a8ff 1064 #else
bogdanm 0:9b334a45a8ff 1065 register uint32_t __BPIALL __ASM("cp15:0:c7:c5:6");
bogdanm 0:9b334a45a8ff 1066 __BPIALL = 0;
bogdanm 0:9b334a45a8ff 1067 #endif
bogdanm 0:9b334a45a8ff 1068 __DSB(); //ensure completion of the invalidation
bogdanm 0:9b334a45a8ff 1069 __ISB(); //ensure instruction fetch path sees new state
bogdanm 0:9b334a45a8ff 1070 }
bogdanm 0:9b334a45a8ff 1071
bogdanm 0:9b334a45a8ff 1072
bogdanm 0:9b334a45a8ff 1073 /******************************** L1 cache operations ******************************************************/
bogdanm 0:9b334a45a8ff 1074
bogdanm 0:9b334a45a8ff 1075 /** \brief Invalidate the whole I$
bogdanm 0:9b334a45a8ff 1076
bogdanm 0:9b334a45a8ff 1077 ICIALLU. Instruction Cache Invalidate All to PoU
bogdanm 0:9b334a45a8ff 1078 */
bogdanm 0:9b334a45a8ff 1079 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_icache_all(void) {
bogdanm 0:9b334a45a8ff 1080 #if 1
bogdanm 0:9b334a45a8ff 1081 __ASM volatile ("mcr p15, 0, %0, c7, c5, 0" : : "r" (0));
bogdanm 0:9b334a45a8ff 1082 #else
bogdanm 0:9b334a45a8ff 1083 register uint32_t __ICIALLU __ASM("cp15:0:c7:c5:0");
bogdanm 0:9b334a45a8ff 1084 __ICIALLU = 0;
bogdanm 0:9b334a45a8ff 1085 #endif
bogdanm 0:9b334a45a8ff 1086 __DSB(); //ensure completion of the invalidation
bogdanm 0:9b334a45a8ff 1087 __ISB(); //ensure instruction fetch path sees new I cache state
bogdanm 0:9b334a45a8ff 1088 }
bogdanm 0:9b334a45a8ff 1089
bogdanm 0:9b334a45a8ff 1090 /** \brief Clean D$ by MVA
bogdanm 0:9b334a45a8ff 1091
bogdanm 0:9b334a45a8ff 1092 DCCMVAC. Data cache clean by MVA to PoC
bogdanm 0:9b334a45a8ff 1093 */
bogdanm 0:9b334a45a8ff 1094 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_clean_dcache_mva(void *va) {
bogdanm 0:9b334a45a8ff 1095 #if 1
bogdanm 0:9b334a45a8ff 1096 __ASM volatile ("mcr p15, 0, %0, c7, c10, 1" : : "r" ((uint32_t)va));
bogdanm 0:9b334a45a8ff 1097 #else
bogdanm 0:9b334a45a8ff 1098 register uint32_t __DCCMVAC __ASM("cp15:0:c7:c10:1");
bogdanm 0:9b334a45a8ff 1099 __DCCMVAC = (uint32_t)va;
bogdanm 0:9b334a45a8ff 1100 #endif
bogdanm 0:9b334a45a8ff 1101 __DMB(); //ensure the ordering of data cache maintenance operations and their effects
bogdanm 0:9b334a45a8ff 1102 }
bogdanm 0:9b334a45a8ff 1103
bogdanm 0:9b334a45a8ff 1104 /** \brief Invalidate D$ by MVA
bogdanm 0:9b334a45a8ff 1105
bogdanm 0:9b334a45a8ff 1106 DCIMVAC. Data cache invalidate by MVA to PoC
bogdanm 0:9b334a45a8ff 1107 */
bogdanm 0:9b334a45a8ff 1108 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_dcache_mva(void *va) {
bogdanm 0:9b334a45a8ff 1109 #if 1
bogdanm 0:9b334a45a8ff 1110 __ASM volatile ("mcr p15, 0, %0, c7, c6, 1" : : "r" ((uint32_t)va));
bogdanm 0:9b334a45a8ff 1111 #else
bogdanm 0:9b334a45a8ff 1112 register uint32_t __DCIMVAC __ASM("cp15:0:c7:c6:1");
bogdanm 0:9b334a45a8ff 1113 __DCIMVAC = (uint32_t)va;
bogdanm 0:9b334a45a8ff 1114 #endif
bogdanm 0:9b334a45a8ff 1115 __DMB(); //ensure the ordering of data cache maintenance operations and their effects
bogdanm 0:9b334a45a8ff 1116 }
bogdanm 0:9b334a45a8ff 1117
bogdanm 0:9b334a45a8ff 1118 /** \brief Clean and Invalidate D$ by MVA
bogdanm 0:9b334a45a8ff 1119
bogdanm 0:9b334a45a8ff 1120 DCCIMVAC. Data cache clean and invalidate by MVA to PoC
bogdanm 0:9b334a45a8ff 1121 */
bogdanm 0:9b334a45a8ff 1122 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_clean_inv_dcache_mva(void *va) {
bogdanm 0:9b334a45a8ff 1123 #if 1
bogdanm 0:9b334a45a8ff 1124 __ASM volatile ("mcr p15, 0, %0, c7, c14, 1" : : "r" ((uint32_t)va));
bogdanm 0:9b334a45a8ff 1125 #else
bogdanm 0:9b334a45a8ff 1126 register uint32_t __DCCIMVAC __ASM("cp15:0:c7:c14:1");
bogdanm 0:9b334a45a8ff 1127 __DCCIMVAC = (uint32_t)va;
bogdanm 0:9b334a45a8ff 1128 #endif
bogdanm 0:9b334a45a8ff 1129 __DMB(); //ensure the ordering of data cache maintenance operations and their effects
bogdanm 0:9b334a45a8ff 1130 }
bogdanm 0:9b334a45a8ff 1131
bogdanm 0:9b334a45a8ff 1132 /** \brief Clean and Invalidate the entire data or unified cache
bogdanm 0:9b334a45a8ff 1133
bogdanm 0:9b334a45a8ff 1134 Generic mechanism for cleaning/invalidating the entire data or unified cache to the point of coherency.
bogdanm 0:9b334a45a8ff 1135 */
bogdanm 0:9b334a45a8ff 1136 extern void __v7_all_cache(uint32_t op);
bogdanm 0:9b334a45a8ff 1137
bogdanm 0:9b334a45a8ff 1138
bogdanm 0:9b334a45a8ff 1139 /** \brief Invalidate the whole D$
bogdanm 0:9b334a45a8ff 1140
bogdanm 0:9b334a45a8ff 1141 DCISW. Invalidate by Set/Way
bogdanm 0:9b334a45a8ff 1142 */
bogdanm 0:9b334a45a8ff 1143
bogdanm 0:9b334a45a8ff 1144 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_dcache_all(void) {
bogdanm 0:9b334a45a8ff 1145 __v7_all_cache(0);
bogdanm 0:9b334a45a8ff 1146 }
bogdanm 0:9b334a45a8ff 1147
bogdanm 0:9b334a45a8ff 1148 /** \brief Clean the whole D$
bogdanm 0:9b334a45a8ff 1149
bogdanm 0:9b334a45a8ff 1150 DCCSW. Clean by Set/Way
bogdanm 0:9b334a45a8ff 1151 */
bogdanm 0:9b334a45a8ff 1152
bogdanm 0:9b334a45a8ff 1153 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_clean_dcache_all(void) {
bogdanm 0:9b334a45a8ff 1154 __v7_all_cache(1);
bogdanm 0:9b334a45a8ff 1155 }
bogdanm 0:9b334a45a8ff 1156
bogdanm 0:9b334a45a8ff 1157 /** \brief Clean and invalidate the whole D$
bogdanm 0:9b334a45a8ff 1158
bogdanm 0:9b334a45a8ff 1159 DCCISW. Clean and Invalidate by Set/Way
bogdanm 0:9b334a45a8ff 1160 */
bogdanm 0:9b334a45a8ff 1161
bogdanm 0:9b334a45a8ff 1162 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_clean_inv_dcache_all(void) {
bogdanm 0:9b334a45a8ff 1163 __v7_all_cache(2);
bogdanm 0:9b334a45a8ff 1164 }
bogdanm 0:9b334a45a8ff 1165
bogdanm 0:9b334a45a8ff 1166 #include "core_ca_mmu.h"
bogdanm 0:9b334a45a8ff 1167
bogdanm 0:9b334a45a8ff 1168 #elif (defined (__TASKING__)) /*--------------- TASKING Compiler -----------------*/
bogdanm 0:9b334a45a8ff 1169
bogdanm 0:9b334a45a8ff 1170 #error TASKING Compiler support not implemented for Cortex-A
bogdanm 0:9b334a45a8ff 1171
bogdanm 0:9b334a45a8ff 1172 #endif
bogdanm 0:9b334a45a8ff 1173
bogdanm 0:9b334a45a8ff 1174 /*@} end of CMSIS_Core_RegAccFunctions */
bogdanm 0:9b334a45a8ff 1175
bogdanm 0:9b334a45a8ff 1176
bogdanm 0:9b334a45a8ff 1177 #endif /* __CORE_CAFUNC_H__ */