Jolyon Hill / mbed-dev

Changes to support running on smaller memory LPC device LPC1764

Fork of mbed-dev by mbed official

targets/cmsis/core_caFunc.h@141:a2b798ec44f6, 2016-05-24 (annotated)

Committer:
mbed_official
Date:
Tue May 24 13:30:14 2016 +0100
Revision:
141:a2b798ec44f6
Parent:
66:fdb3f9f9a72f
Child:
144:ef7eb2e8f9f7
Synchronized with git revision b32f7a9aaf404cba2342b4f3cf268c581046626b



Full URL: https://github.com/mbedmicro/mbed/commit/b32f7a9aaf404cba2342b4f3cf268c581046626b/

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
mbed_official 66:fdb3f9f9a72f 573 #define __inline inline
mbed_official 66:fdb3f9f9a72f 574
mbed_official 66:fdb3f9f9a72f 575 inline static uint32_t __disable_irq_iar() {
mbed_official 66:fdb3f9f9a72f 576 int irq_dis = __get_CPSR() & 0x80; // 7bit CPSR.I
mbed_official 66:fdb3f9f9a72f 577 __disable_irq();
mbed_official 66:fdb3f9f9a72f 578 return irq_dis;
mbed_official 66:fdb3f9f9a72f 579 }
mbed_official 66:fdb3f9f9a72f 580
mbed_official 66:fdb3f9f9a72f 581 #define MODE_USR 0x10
mbed_official 66:fdb3f9f9a72f 582 #define MODE_FIQ 0x11
mbed_official 66:fdb3f9f9a72f 583 #define MODE_IRQ 0x12
mbed_official 66:fdb3f9f9a72f 584 #define MODE_SVC 0x13
mbed_official 66:fdb3f9f9a72f 585 #define MODE_MON 0x16
mbed_official 66:fdb3f9f9a72f 586 #define MODE_ABT 0x17
mbed_official 66:fdb3f9f9a72f 587 #define MODE_HYP 0x1A
mbed_official 66:fdb3f9f9a72f 588 #define MODE_UND 0x1B
mbed_official 66:fdb3f9f9a72f 589 #define MODE_SYS 0x1F
mbed_official 66:fdb3f9f9a72f 590
mbed_official 66:fdb3f9f9a72f 591 /** \brief Set Process Stack Pointer
mbed_official 66:fdb3f9f9a72f 592
mbed_official 66:fdb3f9f9a72f 593 This function assigns the given value to the USR/SYS Stack Pointer (PSP).
mbed_official 66:fdb3f9f9a72f 594
mbed_official 66:fdb3f9f9a72f 595 \param [in] topOfProcStack USR/SYS Stack Pointer value to set
mbed_official 66:fdb3f9f9a72f 596 */
mbed_official 66:fdb3f9f9a72f 597 // from rt_CMSIS.c
mbed_official 66:fdb3f9f9a72f 598 __arm static inline void __set_PSP(uint32_t topOfProcStack) {
mbed_official 66:fdb3f9f9a72f 599 __asm(
mbed_official 66:fdb3f9f9a72f 600 " ARM\n"
mbed_official 66:fdb3f9f9a72f 601 // " PRESERVE8\n"
mbed_official 66:fdb3f9f9a72f 602
mbed_official 66:fdb3f9f9a72f 603 " BIC R0, R0, #7 ;ensure stack is 8-byte aligned \n"
mbed_official 66:fdb3f9f9a72f 604 " MRS R1, CPSR \n"
mbed_official 66:fdb3f9f9a72f 605 " CPS #0x1F ;no effect in USR mode \n" // MODE_SYS
mbed_official 66:fdb3f9f9a72f 606 " MOV SP, R0 \n"
mbed_official 66:fdb3f9f9a72f 607 " MSR CPSR_c, R1 ;no effect in USR mode \n"
mbed_official 66:fdb3f9f9a72f 608 " ISB \n"
mbed_official 66:fdb3f9f9a72f 609 " BX LR \n");
mbed_official 66:fdb3f9f9a72f 610 }
mbed_official 66:fdb3f9f9a72f 611
mbed_official 66:fdb3f9f9a72f 612 /** \brief Set User Mode
mbed_official 66:fdb3f9f9a72f 613
mbed_official 66:fdb3f9f9a72f 614 This function changes the processor state to User Mode
mbed_official 66:fdb3f9f9a72f 615 */
mbed_official 66:fdb3f9f9a72f 616 // from rt_CMSIS.c
mbed_official 66:fdb3f9f9a72f 617 __arm static inline void __set_CPS_USR(void) {
mbed_official 66:fdb3f9f9a72f 618 __asm(
mbed_official 66:fdb3f9f9a72f 619 " ARM \n"
mbed_official 66:fdb3f9f9a72f 620
mbed_official 66:fdb3f9f9a72f 621 " CPS #0x10 \n" // MODE_USR
mbed_official 66:fdb3f9f9a72f 622 " BX LR\n");
mbed_official 66:fdb3f9f9a72f 623 }
mbed_official 66:fdb3f9f9a72f 624
mbed_official 66:fdb3f9f9a72f 625 /** \brief Set TTBR0
mbed_official 66:fdb3f9f9a72f 626
mbed_official 66:fdb3f9f9a72f 627 This function assigns the given value to the Translation Table Base Register 0.
mbed_official 66:fdb3f9f9a72f 628
mbed_official 66:fdb3f9f9a72f 629 \param [in] ttbr0 Translation Table Base Register 0 value to set
mbed_official 66:fdb3f9f9a72f 630 */
mbed_official 66:fdb3f9f9a72f 631 // from mmu_Renesas_RZ_A1.c
mbed_official 66:fdb3f9f9a72f 632 __STATIC_INLINE void __set_TTBR0(uint32_t ttbr0) {
mbed_official 66:fdb3f9f9a72f 633 __MCR(15, 0, ttbr0, 2, 0, 0); // reg to cp15
mbed_official 66:fdb3f9f9a72f 634 __ISB();
mbed_official 66:fdb3f9f9a72f 635 }
mbed_official 66:fdb3f9f9a72f 636
mbed_official 66:fdb3f9f9a72f 637 /** \brief Set DACR
mbed_official 66:fdb3f9f9a72f 638
mbed_official 66:fdb3f9f9a72f 639 This function assigns the given value to the Domain Access Control Register.
mbed_official 66:fdb3f9f9a72f 640
mbed_official 66:fdb3f9f9a72f 641 \param [in] dacr Domain Access Control Register value to set
mbed_official 66:fdb3f9f9a72f 642 */
mbed_official 66:fdb3f9f9a72f 643 // from mmu_Renesas_RZ_A1.c
mbed_official 66:fdb3f9f9a72f 644 __STATIC_INLINE void __set_DACR(uint32_t dacr) {
mbed_official 66:fdb3f9f9a72f 645 __MCR(15, 0, dacr, 3, 0, 0); // reg to cp15
mbed_official 66:fdb3f9f9a72f 646 __ISB();
mbed_official 66:fdb3f9f9a72f 647 }
mbed_official 66:fdb3f9f9a72f 648
mbed_official 66:fdb3f9f9a72f 649
mbed_official 66:fdb3f9f9a72f 650 /******************************** Cache and BTAC enable ****************************************************/
mbed_official 66:fdb3f9f9a72f 651 /** \brief Set SCTLR
mbed_official 66:fdb3f9f9a72f 652
mbed_official 66:fdb3f9f9a72f 653 This function assigns the given value to the System Control Register.
mbed_official 66:fdb3f9f9a72f 654
mbed_official 66:fdb3f9f9a72f 655 \param [in] sctlr System Control Register value to set
mbed_official 66:fdb3f9f9a72f 656 */
mbed_official 66:fdb3f9f9a72f 657 // from __enable_mmu()
mbed_official 66:fdb3f9f9a72f 658 __STATIC_INLINE void __set_SCTLR(uint32_t sctlr) {
mbed_official 66:fdb3f9f9a72f 659 __MCR(15, 0, sctlr, 1, 0, 0); // reg to cp15
mbed_official 66:fdb3f9f9a72f 660 }
mbed_official 66:fdb3f9f9a72f 661
mbed_official 66:fdb3f9f9a72f 662 /** \brief Get SCTLR
mbed_official 66:fdb3f9f9a72f 663
mbed_official 66:fdb3f9f9a72f 664 This function returns the value of the System Control Register.
mbed_official 66:fdb3f9f9a72f 665
mbed_official 66:fdb3f9f9a72f 666 \return System Control Register value
mbed_official 66:fdb3f9f9a72f 667 */
mbed_official 66:fdb3f9f9a72f 668 // from __enable_mmu()
mbed_official 66:fdb3f9f9a72f 669 __STATIC_INLINE uint32_t __get_SCTLR() {
mbed_official 66:fdb3f9f9a72f 670 uint32_t __regSCTLR = __MRC(15, 0, 1, 0, 0);
mbed_official 66:fdb3f9f9a72f 671 return __regSCTLR;
mbed_official 66:fdb3f9f9a72f 672 }
mbed_official 66:fdb3f9f9a72f 673
mbed_official 66:fdb3f9f9a72f 674 /** \brief Enable Caches
mbed_official 66:fdb3f9f9a72f 675
mbed_official 66:fdb3f9f9a72f 676 Enable Caches
mbed_official 66:fdb3f9f9a72f 677 */
mbed_official 66:fdb3f9f9a72f 678 // from system_Renesas_RZ_A1.c
mbed_official 66:fdb3f9f9a72f 679 __STATIC_INLINE void __enable_caches(void) {
mbed_official 66:fdb3f9f9a72f 680 __set_SCTLR( __get_SCTLR() | (1 << 12) | (1 << 2));
mbed_official 66:fdb3f9f9a72f 681 }
mbed_official 66:fdb3f9f9a72f 682
mbed_official 66:fdb3f9f9a72f 683 /** \brief Enable BTAC
mbed_official 66:fdb3f9f9a72f 684
mbed_official 66:fdb3f9f9a72f 685 Enable BTAC
mbed_official 66:fdb3f9f9a72f 686 */
mbed_official 66:fdb3f9f9a72f 687 // from system_Renesas_RZ_A1.c
mbed_official 66:fdb3f9f9a72f 688 __STATIC_INLINE void __enable_btac(void) {
mbed_official 66:fdb3f9f9a72f 689 __set_SCTLR( __get_SCTLR() | (1 << 11));
mbed_official 66:fdb3f9f9a72f 690 __ISB();
mbed_official 66:fdb3f9f9a72f 691 }
mbed_official 66:fdb3f9f9a72f 692
mbed_official 66:fdb3f9f9a72f 693 /** \brief Enable MMU
mbed_official 66:fdb3f9f9a72f 694
mbed_official 66:fdb3f9f9a72f 695 Enable MMU
mbed_official 66:fdb3f9f9a72f 696 */
mbed_official 66:fdb3f9f9a72f 697 // from system_Renesas_RZ_A1.c
mbed_official 66:fdb3f9f9a72f 698 __STATIC_INLINE void __enable_mmu(void) {
mbed_official 66:fdb3f9f9a72f 699 // Set M bit 0 to enable the MMU
mbed_official 66:fdb3f9f9a72f 700 // Set AFE bit to enable simplified access permissions model
mbed_official 66:fdb3f9f9a72f 701 // Clear TRE bit to disable TEX remap and A bit to disable strict alignment fault checking
mbed_official 66:fdb3f9f9a72f 702 __set_SCTLR( (__get_SCTLR() & ~(1 << 28) & ~(1 << 1)) | 1 | (1 << 29));
mbed_official 66:fdb3f9f9a72f 703 __ISB();
mbed_official 66:fdb3f9f9a72f 704 }
mbed_official 66:fdb3f9f9a72f 705
mbed_official 66:fdb3f9f9a72f 706 /******************************** TLB maintenance operations ************************************************/
mbed_official 66:fdb3f9f9a72f 707 /** \brief Invalidate the whole tlb
mbed_official 66:fdb3f9f9a72f 708
mbed_official 66:fdb3f9f9a72f 709 TLBIALL. Invalidate the whole tlb
mbed_official 66:fdb3f9f9a72f 710 */
mbed_official 66:fdb3f9f9a72f 711 // from system_Renesas_RZ_A1.c
mbed_official 66:fdb3f9f9a72f 712 __STATIC_INLINE void __ca9u_inv_tlb_all(void) {
mbed_official 66:fdb3f9f9a72f 713 uint32_t val = 0;
mbed_official 66:fdb3f9f9a72f 714 __MCR(15, 0, val, 8, 7, 0); // reg to cp15
mbed_official 66:fdb3f9f9a72f 715 __MCR(15, 0, val, 8, 6, 0); // reg to cp15
mbed_official 66:fdb3f9f9a72f 716 __MCR(15, 0, val, 8, 5, 0); // reg to cp15
mbed_official 66:fdb3f9f9a72f 717 __DSB();
mbed_official 66:fdb3f9f9a72f 718 __ISB();
mbed_official 66:fdb3f9f9a72f 719 }
mbed_official 66:fdb3f9f9a72f 720
mbed_official 66:fdb3f9f9a72f 721 /******************************** BTB maintenance operations ************************************************/
mbed_official 66:fdb3f9f9a72f 722 /** \brief Invalidate entire branch predictor array
mbed_official 66:fdb3f9f9a72f 723
mbed_official 66:fdb3f9f9a72f 724 BPIALL. Branch Predictor Invalidate All.
mbed_official 66:fdb3f9f9a72f 725 */
mbed_official 66:fdb3f9f9a72f 726 // from system_Renesas_RZ_A1.c
mbed_official 66:fdb3f9f9a72f 727 __STATIC_INLINE void __v7_inv_btac(void) {
mbed_official 66:fdb3f9f9a72f 728 uint32_t val = 0;
mbed_official 66:fdb3f9f9a72f 729 __MCR(15, 0, val, 7, 5, 6); // reg to cp15
mbed_official 66:fdb3f9f9a72f 730 __DSB(); //ensure completion of the invalidation
mbed_official 66:fdb3f9f9a72f 731 __ISB(); //ensure instruction fetch path sees new state
mbed_official 66:fdb3f9f9a72f 732 }
mbed_official 66:fdb3f9f9a72f 733
mbed_official 66:fdb3f9f9a72f 734
mbed_official 66:fdb3f9f9a72f 735 /******************************** L1 cache operations ******************************************************/
mbed_official 66:fdb3f9f9a72f 736
mbed_official 66:fdb3f9f9a72f 737 /** \brief Invalidate the whole I$
mbed_official 66:fdb3f9f9a72f 738
mbed_official 66:fdb3f9f9a72f 739 ICIALLU. Instruction Cache Invalidate All to PoU
mbed_official 66:fdb3f9f9a72f 740 */
mbed_official 66:fdb3f9f9a72f 741 // from system_Renesas_RZ_A1.c
mbed_official 66:fdb3f9f9a72f 742 __STATIC_INLINE void __v7_inv_icache_all(void) {
mbed_official 66:fdb3f9f9a72f 743 uint32_t val = 0;
mbed_official 66:fdb3f9f9a72f 744 __MCR(15, 0, val, 7, 5, 0); // reg to cp15
mbed_official 66:fdb3f9f9a72f 745 __DSB(); //ensure completion of the invalidation
mbed_official 66:fdb3f9f9a72f 746 __ISB(); //ensure instruction fetch path sees new I cache state
mbed_official 66:fdb3f9f9a72f 747 }
mbed_official 66:fdb3f9f9a72f 748
mbed_official 66:fdb3f9f9a72f 749 // from __v7_inv_dcache_all()
mbed_official 66:fdb3f9f9a72f 750 __arm static inline void __v7_all_cache(uint32_t op) {
mbed_official 66:fdb3f9f9a72f 751 __asm(
mbed_official 66:fdb3f9f9a72f 752 " ARM \n"
mbed_official 66:fdb3f9f9a72f 753
mbed_official 66:fdb3f9f9a72f 754 " PUSH {R4-R11} \n"
mbed_official 66:fdb3f9f9a72f 755
mbed_official 66:fdb3f9f9a72f 756 " MRC p15, 1, R6, c0, c0, 1\n" // Read CLIDR
mbed_official 66:fdb3f9f9a72f 757 " ANDS R3, R6, #0x07000000\n" // Extract coherency level
mbed_official 66:fdb3f9f9a72f 758 " MOV R3, R3, LSR #23\n" // Total cache levels << 1
mbed_official 66:fdb3f9f9a72f 759 " BEQ Finished\n" // If 0, no need to clean
mbed_official 66:fdb3f9f9a72f 760
mbed_official 66:fdb3f9f9a72f 761 " MOV R10, #0\n" // R10 holds current cache level << 1
mbed_official 66:fdb3f9f9a72f 762 "Loop1: ADD R2, R10, R10, LSR #1\n" // R2 holds cache "Set" position
mbed_official 66:fdb3f9f9a72f 763 " MOV R1, R6, LSR R2 \n" // Bottom 3 bits are the Cache-type for this level
mbed_official 66:fdb3f9f9a72f 764 " AND R1, R1, #7 \n" // Isolate those lower 3 bits
mbed_official 66:fdb3f9f9a72f 765 " CMP R1, #2 \n"
mbed_official 66:fdb3f9f9a72f 766 " BLT Skip \n" // No cache or only instruction cache at this level
mbed_official 66:fdb3f9f9a72f 767
mbed_official 66:fdb3f9f9a72f 768 " MCR p15, 2, R10, c0, c0, 0 \n" // Write the Cache Size selection register
mbed_official 66:fdb3f9f9a72f 769 " ISB \n" // ISB to sync the change to the CacheSizeID reg
mbed_official 66:fdb3f9f9a72f 770 " MRC p15, 1, R1, c0, c0, 0 \n" // Reads current Cache Size ID register
mbed_official 66:fdb3f9f9a72f 771 " AND R2, R1, #7 \n" // Extract the line length field
mbed_official 66:fdb3f9f9a72f 772 " ADD R2, R2, #4 \n" // Add 4 for the line length offset (log2 16 bytes)
mbed_official 66:fdb3f9f9a72f 773 " movw R4, #0x3FF \n"
mbed_official 66:fdb3f9f9a72f 774 " ANDS R4, R4, R1, LSR #3 \n" // R4 is the max number on the way size (right aligned)
mbed_official 66:fdb3f9f9a72f 775 " CLZ R5, R4 \n" // R5 is the bit position of the way size increment
mbed_official 66:fdb3f9f9a72f 776 " movw R7, #0x7FFF \n"
mbed_official 66:fdb3f9f9a72f 777 " ANDS R7, R7, R1, LSR #13 \n" // R7 is the max number of the index size (right aligned)
mbed_official 66:fdb3f9f9a72f 778
mbed_official 66:fdb3f9f9a72f 779 "Loop2: MOV R9, R4 \n" // R9 working copy of the max way size (right aligned)
mbed_official 66:fdb3f9f9a72f 780
mbed_official 66:fdb3f9f9a72f 781 "Loop3: ORR R11, R10, R9, LSL R5 \n" // Factor in the Way number and cache number into R11
mbed_official 66:fdb3f9f9a72f 782 " ORR R11, R11, R7, LSL R2 \n" // Factor in the Set number
mbed_official 66:fdb3f9f9a72f 783 " CMP R0, #0 \n"
mbed_official 66:fdb3f9f9a72f 784 " BNE Dccsw \n"
mbed_official 66:fdb3f9f9a72f 785 " MCR p15, 0, R11, c7, c6, 2 \n" // DCISW. Invalidate by Set/Way
mbed_official 66:fdb3f9f9a72f 786 " B cont \n"
mbed_official 66:fdb3f9f9a72f 787 "Dccsw: CMP R0, #1 \n"
mbed_official 66:fdb3f9f9a72f 788 " BNE Dccisw \n"
mbed_official 66:fdb3f9f9a72f 789 " MCR p15, 0, R11, c7, c10, 2 \n" // DCCSW. Clean by Set/Way
mbed_official 66:fdb3f9f9a72f 790 " B cont \n"
mbed_official 66:fdb3f9f9a72f 791 "Dccisw: MCR p15, 0, R11, c7, c14, 2 \n" // DCCISW, Clean and Invalidate by Set/Way
mbed_official 66:fdb3f9f9a72f 792 "cont: SUBS R9, R9, #1 \n" // Decrement the Way number
mbed_official 66:fdb3f9f9a72f 793 " BGE Loop3 \n"
mbed_official 66:fdb3f9f9a72f 794 " SUBS R7, R7, #1 \n" // Decrement the Set number
mbed_official 66:fdb3f9f9a72f 795 " BGE Loop2 \n"
mbed_official 66:fdb3f9f9a72f 796 "Skip: ADD R10, R10, #2 \n" // increment the cache number
mbed_official 66:fdb3f9f9a72f 797 " CMP R3, R10 \n"
mbed_official 66:fdb3f9f9a72f 798 " BGT Loop1 \n"
mbed_official 66:fdb3f9f9a72f 799
mbed_official 66:fdb3f9f9a72f 800 "Finished: \n"
mbed_official 66:fdb3f9f9a72f 801 " DSB \n"
mbed_official 66:fdb3f9f9a72f 802 " POP {R4-R11} \n"
mbed_official 66:fdb3f9f9a72f 803 " BX lr \n" );
mbed_official 66:fdb3f9f9a72f 804 }
mbed_official 66:fdb3f9f9a72f 805
mbed_official 66:fdb3f9f9a72f 806 /** \brief Invalidate the whole D$
mbed_official 66:fdb3f9f9a72f 807
mbed_official 66:fdb3f9f9a72f 808 DCISW. Invalidate by Set/Way
mbed_official 66:fdb3f9f9a72f 809 */
mbed_official 66:fdb3f9f9a72f 810 // from system_Renesas_RZ_A1.c
mbed_official 66:fdb3f9f9a72f 811 __STATIC_INLINE void __v7_inv_dcache_all(void) {
mbed_official 66:fdb3f9f9a72f 812 __v7_all_cache(0);
mbed_official 66:fdb3f9f9a72f 813 }
mbed_official 141:a2b798ec44f6 814 /** \brief Clean and Invalidate D$ by MVA
mbed_official 141:a2b798ec44f6 815
mbed_official 141:a2b798ec44f6 816 DCCIMVAC. Data cache clean and invalidate by MVA to PoC
mbed_official 141:a2b798ec44f6 817 */
mbed_official 141:a2b798ec44f6 818 __STATIC_INLINE void __v7_clean_inv_dcache_mva(void *va) {
mbed_official 141:a2b798ec44f6 819 __MCR(15, 0, (uint32_t)va, 7, 14, 1);
mbed_official 141:a2b798ec44f6 820 __DMB();
mbed_official 141:a2b798ec44f6 821 }
mbed_official 141:a2b798ec44f6 822
mbed_official 66:fdb3f9f9a72f 823 #include "core_ca_mmu.h"
bogdanm 0:9b334a45a8ff 824
bogdanm 0:9b334a45a8ff 825 #elif (defined (__GNUC__)) /*------------------ GNU Compiler ---------------------*/
bogdanm 0:9b334a45a8ff 826 /* GNU gcc specific functions */
bogdanm 0:9b334a45a8ff 827
bogdanm 0:9b334a45a8ff 828 #define MODE_USR 0x10
bogdanm 0:9b334a45a8ff 829 #define MODE_FIQ 0x11
bogdanm 0:9b334a45a8ff 830 #define MODE_IRQ 0x12
bogdanm 0:9b334a45a8ff 831 #define MODE_SVC 0x13
bogdanm 0:9b334a45a8ff 832 #define MODE_MON 0x16
bogdanm 0:9b334a45a8ff 833 #define MODE_ABT 0x17
bogdanm 0:9b334a45a8ff 834 #define MODE_HYP 0x1A
bogdanm 0:9b334a45a8ff 835 #define MODE_UND 0x1B
bogdanm 0:9b334a45a8ff 836 #define MODE_SYS 0x1F
bogdanm 0:9b334a45a8ff 837
bogdanm 0:9b334a45a8ff 838
bogdanm 0:9b334a45a8ff 839 __attribute__( ( always_inline ) ) __STATIC_INLINE void __enable_irq(void)
bogdanm 0:9b334a45a8ff 840 {
bogdanm 0:9b334a45a8ff 841 __ASM volatile ("cpsie i");
bogdanm 0:9b334a45a8ff 842 }
bogdanm 0:9b334a45a8ff 843
bogdanm 0:9b334a45a8ff 844 /** \brief Disable IRQ Interrupts
bogdanm 0:9b334a45a8ff 845
bogdanm 0:9b334a45a8ff 846 This function disables IRQ interrupts by setting the I-bit in the CPSR.
bogdanm 0:9b334a45a8ff 847 Can only be executed in Privileged modes.
bogdanm 0:9b334a45a8ff 848 */
bogdanm 0:9b334a45a8ff 849 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __disable_irq(void)
bogdanm 0:9b334a45a8ff 850 {
bogdanm 0:9b334a45a8ff 851 uint32_t result;
bogdanm 0:9b334a45a8ff 852
bogdanm 0:9b334a45a8ff 853 __ASM volatile ("mrs %0, cpsr" : "=r" (result));
bogdanm 0:9b334a45a8ff 854 __ASM volatile ("cpsid i");
bogdanm 0:9b334a45a8ff 855 return(result & 0x80);
bogdanm 0:9b334a45a8ff 856 }
bogdanm 0:9b334a45a8ff 857
bogdanm 0:9b334a45a8ff 858
bogdanm 0:9b334a45a8ff 859 /** \brief Get APSR Register
bogdanm 0:9b334a45a8ff 860
bogdanm 0:9b334a45a8ff 861 This function returns the content of the APSR Register.
bogdanm 0:9b334a45a8ff 862
bogdanm 0:9b334a45a8ff 863 \return APSR Register value
bogdanm 0:9b334a45a8ff 864 */
bogdanm 0:9b334a45a8ff 865 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_APSR(void)
bogdanm 0:9b334a45a8ff 866 {
bogdanm 0:9b334a45a8ff 867 #if 1
bogdanm 0:9b334a45a8ff 868 register uint32_t __regAPSR;
bogdanm 0:9b334a45a8ff 869 __ASM volatile ("mrs %0, apsr" : "=r" (__regAPSR) );
bogdanm 0:9b334a45a8ff 870 #else
bogdanm 0:9b334a45a8ff 871 register uint32_t __regAPSR __ASM("apsr");
bogdanm 0:9b334a45a8ff 872 #endif
bogdanm 0:9b334a45a8ff 873 return(__regAPSR);
bogdanm 0:9b334a45a8ff 874 }
bogdanm 0:9b334a45a8ff 875
bogdanm 0:9b334a45a8ff 876
bogdanm 0:9b334a45a8ff 877 /** \brief Get CPSR Register
bogdanm 0:9b334a45a8ff 878
bogdanm 0:9b334a45a8ff 879 This function returns the content of the CPSR Register.
bogdanm 0:9b334a45a8ff 880
bogdanm 0:9b334a45a8ff 881 \return CPSR Register value
bogdanm 0:9b334a45a8ff 882 */
bogdanm 0:9b334a45a8ff 883 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_CPSR(void)
bogdanm 0:9b334a45a8ff 884 {
bogdanm 0:9b334a45a8ff 885 #if 1
bogdanm 0:9b334a45a8ff 886 register uint32_t __regCPSR;
bogdanm 0:9b334a45a8ff 887 __ASM volatile ("mrs %0, cpsr" : "=r" (__regCPSR));
bogdanm 0:9b334a45a8ff 888 #else
bogdanm 0:9b334a45a8ff 889 register uint32_t __regCPSR __ASM("cpsr");
bogdanm 0:9b334a45a8ff 890 #endif
bogdanm 0:9b334a45a8ff 891 return(__regCPSR);
bogdanm 0:9b334a45a8ff 892 }
bogdanm 0:9b334a45a8ff 893
bogdanm 0:9b334a45a8ff 894 #if 0
bogdanm 0:9b334a45a8ff 895 /** \brief Set Stack Pointer
bogdanm 0:9b334a45a8ff 896
bogdanm 0:9b334a45a8ff 897 This function assigns the given value to the current stack pointer.
bogdanm 0:9b334a45a8ff 898
bogdanm 0:9b334a45a8ff 899 \param [in] topOfStack Stack Pointer value to set
bogdanm 0:9b334a45a8ff 900 */
bogdanm 0:9b334a45a8ff 901 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_SP(uint32_t topOfStack)
bogdanm 0:9b334a45a8ff 902 {
bogdanm 0:9b334a45a8ff 903 register uint32_t __regSP __ASM("sp");
bogdanm 0:9b334a45a8ff 904 __regSP = topOfStack;
bogdanm 0:9b334a45a8ff 905 }
bogdanm 0:9b334a45a8ff 906 #endif
bogdanm 0:9b334a45a8ff 907
bogdanm 0:9b334a45a8ff 908 /** \brief Get link register
bogdanm 0:9b334a45a8ff 909
bogdanm 0:9b334a45a8ff 910 This function returns the value of the link register
bogdanm 0:9b334a45a8ff 911
bogdanm 0:9b334a45a8ff 912 \return Value of link register
bogdanm 0:9b334a45a8ff 913 */
bogdanm 0:9b334a45a8ff 914 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_LR(void)
bogdanm 0:9b334a45a8ff 915 {
bogdanm 0:9b334a45a8ff 916 register uint32_t __reglr __ASM("lr");
bogdanm 0:9b334a45a8ff 917 return(__reglr);
bogdanm 0:9b334a45a8ff 918 }
bogdanm 0:9b334a45a8ff 919
bogdanm 0:9b334a45a8ff 920 #if 0
bogdanm 0:9b334a45a8ff 921 /** \brief Set link register
bogdanm 0:9b334a45a8ff 922
bogdanm 0:9b334a45a8ff 923 This function sets the value of the link register
bogdanm 0:9b334a45a8ff 924
bogdanm 0:9b334a45a8ff 925 \param [in] lr LR value to set
bogdanm 0:9b334a45a8ff 926 */
bogdanm 0:9b334a45a8ff 927 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_LR(uint32_t lr)
bogdanm 0:9b334a45a8ff 928 {
bogdanm 0:9b334a45a8ff 929 register uint32_t __reglr __ASM("lr");
bogdanm 0:9b334a45a8ff 930 __reglr = lr;
bogdanm 0:9b334a45a8ff 931 }
bogdanm 0:9b334a45a8ff 932 #endif
bogdanm 0:9b334a45a8ff 933
bogdanm 0:9b334a45a8ff 934 /** \brief Set Process Stack Pointer
bogdanm 0:9b334a45a8ff 935
bogdanm 0:9b334a45a8ff 936 This function assigns the given value to the USR/SYS Stack Pointer (PSP).
bogdanm 0:9b334a45a8ff 937
bogdanm 0:9b334a45a8ff 938 \param [in] topOfProcStack USR/SYS Stack Pointer value to set
bogdanm 0:9b334a45a8ff 939 */
bogdanm 0:9b334a45a8ff 940 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_PSP(uint32_t topOfProcStack)
bogdanm 0:9b334a45a8ff 941 {
bogdanm 0:9b334a45a8ff 942 __asm__ volatile (
bogdanm 0:9b334a45a8ff 943 ".ARM;"
bogdanm 0:9b334a45a8ff 944 ".eabi_attribute Tag_ABI_align8_preserved,1;"
bogdanm 0:9b334a45a8ff 945
bogdanm 0:9b334a45a8ff 946 "BIC R0, R0, #7;" /* ;ensure stack is 8-byte aligned */
bogdanm 0:9b334a45a8ff 947 "MRS R1, CPSR;"
bogdanm 0:9b334a45a8ff 948 "CPS %0;" /* ;no effect in USR mode */
bogdanm 0:9b334a45a8ff 949 "MOV SP, R0;"
bogdanm 0:9b334a45a8ff 950 "MSR CPSR_c, R1;" /* ;no effect in USR mode */
bogdanm 0:9b334a45a8ff 951 "ISB;"
bogdanm 0:9b334a45a8ff 952 //"BX LR;"
bogdanm 0:9b334a45a8ff 953 :
bogdanm 0:9b334a45a8ff 954 : "i"(MODE_SYS)
bogdanm 0:9b334a45a8ff 955 : "r0", "r1");
bogdanm 0:9b334a45a8ff 956 return;
bogdanm 0:9b334a45a8ff 957 }
bogdanm 0:9b334a45a8ff 958
bogdanm 0:9b334a45a8ff 959 /** \brief Set User Mode
bogdanm 0:9b334a45a8ff 960
bogdanm 0:9b334a45a8ff 961 This function changes the processor state to User Mode
bogdanm 0:9b334a45a8ff 962 */
bogdanm 0:9b334a45a8ff 963 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_CPS_USR(void)
bogdanm 0:9b334a45a8ff 964 {
bogdanm 0:9b334a45a8ff 965 __asm__ volatile (
bogdanm 0:9b334a45a8ff 966 ".ARM;"
bogdanm 0:9b334a45a8ff 967
bogdanm 0:9b334a45a8ff 968 "CPS %0;"
bogdanm 0:9b334a45a8ff 969 //"BX LR;"
bogdanm 0:9b334a45a8ff 970 :
bogdanm 0:9b334a45a8ff 971 : "i"(MODE_USR)
bogdanm 0:9b334a45a8ff 972 : );
bogdanm 0:9b334a45a8ff 973 return;
bogdanm 0:9b334a45a8ff 974 }
bogdanm 0:9b334a45a8ff 975
bogdanm 0:9b334a45a8ff 976
bogdanm 0:9b334a45a8ff 977 /** \brief Enable FIQ
bogdanm 0:9b334a45a8ff 978
bogdanm 0:9b334a45a8ff 979 This function enables FIQ interrupts by clearing the F-bit in the CPSR.
bogdanm 0:9b334a45a8ff 980 Can only be executed in Privileged modes.
bogdanm 0:9b334a45a8ff 981 */
bogdanm 0:9b334a45a8ff 982 #define __enable_fault_irq() __asm__ volatile ("cpsie f")
bogdanm 0:9b334a45a8ff 983
bogdanm 0:9b334a45a8ff 984
bogdanm 0:9b334a45a8ff 985 /** \brief Disable FIQ
bogdanm 0:9b334a45a8ff 986
bogdanm 0:9b334a45a8ff 987 This function disables FIQ interrupts by setting the F-bit in the CPSR.
bogdanm 0:9b334a45a8ff 988 Can only be executed in Privileged modes.
bogdanm 0:9b334a45a8ff 989 */
bogdanm 0:9b334a45a8ff 990 #define __disable_fault_irq() __asm__ volatile ("cpsid f")
bogdanm 0:9b334a45a8ff 991
bogdanm 0:9b334a45a8ff 992
bogdanm 0:9b334a45a8ff 993 /** \brief Get FPSCR
bogdanm 0:9b334a45a8ff 994
bogdanm 0:9b334a45a8ff 995 This function returns the current value of the Floating Point Status/Control register.
bogdanm 0:9b334a45a8ff 996
bogdanm 0:9b334a45a8ff 997 \return Floating Point Status/Control register value
bogdanm 0:9b334a45a8ff 998 */
bogdanm 0:9b334a45a8ff 999 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_FPSCR(void)
bogdanm 0:9b334a45a8ff 1000 {
bogdanm 0:9b334a45a8ff 1001 #if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
bogdanm 0:9b334a45a8ff 1002 #if 1
bogdanm 0:9b334a45a8ff 1003 uint32_t result;
bogdanm 0:9b334a45a8ff 1004
bogdanm 0:9b334a45a8ff 1005 __ASM volatile ("vmrs %0, fpscr" : "=r" (result) );
bogdanm 0:9b334a45a8ff 1006 return (result);
bogdanm 0:9b334a45a8ff 1007 #else
bogdanm 0:9b334a45a8ff 1008 register uint32_t __regfpscr __ASM("fpscr");
bogdanm 0:9b334a45a8ff 1009 return(__regfpscr);
bogdanm 0:9b334a45a8ff 1010 #endif
bogdanm 0:9b334a45a8ff 1011 #else
bogdanm 0:9b334a45a8ff 1012 return(0);
bogdanm 0:9b334a45a8ff 1013 #endif
bogdanm 0:9b334a45a8ff 1014 }
bogdanm 0:9b334a45a8ff 1015
bogdanm 0:9b334a45a8ff 1016
bogdanm 0:9b334a45a8ff 1017 /** \brief Set FPSCR
bogdanm 0:9b334a45a8ff 1018
bogdanm 0:9b334a45a8ff 1019 This function assigns the given value to the Floating Point Status/Control register.
bogdanm 0:9b334a45a8ff 1020
bogdanm 0:9b334a45a8ff 1021 \param [in] fpscr Floating Point Status/Control value to set
bogdanm 0:9b334a45a8ff 1022 */
bogdanm 0:9b334a45a8ff 1023 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_FPSCR(uint32_t fpscr)
bogdanm 0:9b334a45a8ff 1024 {
bogdanm 0:9b334a45a8ff 1025 #if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
bogdanm 0:9b334a45a8ff 1026 #if 1
bogdanm 0:9b334a45a8ff 1027 __ASM volatile ("vmsr fpscr, %0" : : "r" (fpscr) );
bogdanm 0:9b334a45a8ff 1028 #else
bogdanm 0:9b334a45a8ff 1029 register uint32_t __regfpscr __ASM("fpscr");
bogdanm 0:9b334a45a8ff 1030 __regfpscr = (fpscr);
bogdanm 0:9b334a45a8ff 1031 #endif
bogdanm 0:9b334a45a8ff 1032 #endif
bogdanm 0:9b334a45a8ff 1033 }
bogdanm 0:9b334a45a8ff 1034
bogdanm 0:9b334a45a8ff 1035 /** \brief Get FPEXC
bogdanm 0:9b334a45a8ff 1036
bogdanm 0:9b334a45a8ff 1037 This function returns the current value of the Floating Point Exception Control register.
bogdanm 0:9b334a45a8ff 1038
bogdanm 0:9b334a45a8ff 1039 \return Floating Point Exception Control register value
bogdanm 0:9b334a45a8ff 1040 */
bogdanm 0:9b334a45a8ff 1041 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_FPEXC(void)
bogdanm 0:9b334a45a8ff 1042 {
bogdanm 0:9b334a45a8ff 1043 #if (__FPU_PRESENT == 1)
bogdanm 0:9b334a45a8ff 1044 #if 1
bogdanm 0:9b334a45a8ff 1045 uint32_t result;
bogdanm 0:9b334a45a8ff 1046
bogdanm 0:9b334a45a8ff 1047 __ASM volatile ("vmrs %0, fpexc" : "=r" (result));
bogdanm 0:9b334a45a8ff 1048 return (result);
bogdanm 0:9b334a45a8ff 1049 #else
bogdanm 0:9b334a45a8ff 1050 register uint32_t __regfpexc __ASM("fpexc");
bogdanm 0:9b334a45a8ff 1051 return(__regfpexc);
bogdanm 0:9b334a45a8ff 1052 #endif
bogdanm 0:9b334a45a8ff 1053 #else
bogdanm 0:9b334a45a8ff 1054 return(0);
bogdanm 0:9b334a45a8ff 1055 #endif
bogdanm 0:9b334a45a8ff 1056 }
bogdanm 0:9b334a45a8ff 1057
bogdanm 0:9b334a45a8ff 1058
bogdanm 0:9b334a45a8ff 1059 /** \brief Set FPEXC
bogdanm 0:9b334a45a8ff 1060
bogdanm 0:9b334a45a8ff 1061 This function assigns the given value to the Floating Point Exception Control register.
bogdanm 0:9b334a45a8ff 1062
bogdanm 0:9b334a45a8ff 1063 \param [in] fpscr Floating Point Exception Control value to set
bogdanm 0:9b334a45a8ff 1064 */
bogdanm 0:9b334a45a8ff 1065 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_FPEXC(uint32_t fpexc)
bogdanm 0:9b334a45a8ff 1066 {
bogdanm 0:9b334a45a8ff 1067 #if (__FPU_PRESENT == 1)
bogdanm 0:9b334a45a8ff 1068 #if 1
bogdanm 0:9b334a45a8ff 1069 __ASM volatile ("vmsr fpexc, %0" : : "r" (fpexc));
bogdanm 0:9b334a45a8ff 1070 #else
bogdanm 0:9b334a45a8ff 1071 register uint32_t __regfpexc __ASM("fpexc");
bogdanm 0:9b334a45a8ff 1072 __regfpexc = (fpexc);
bogdanm 0:9b334a45a8ff 1073 #endif
bogdanm 0:9b334a45a8ff 1074 #endif
bogdanm 0:9b334a45a8ff 1075 }
bogdanm 0:9b334a45a8ff 1076
bogdanm 0:9b334a45a8ff 1077 /** \brief Get CPACR
bogdanm 0:9b334a45a8ff 1078
bogdanm 0:9b334a45a8ff 1079 This function returns the current value of the Coprocessor Access Control register.
bogdanm 0:9b334a45a8ff 1080
bogdanm 0:9b334a45a8ff 1081 \return Coprocessor Access Control register value
bogdanm 0:9b334a45a8ff 1082 */
bogdanm 0:9b334a45a8ff 1083 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_CPACR(void)
bogdanm 0:9b334a45a8ff 1084 {
bogdanm 0:9b334a45a8ff 1085 #if 1
bogdanm 0:9b334a45a8ff 1086 register uint32_t __regCPACR;
bogdanm 0:9b334a45a8ff 1087 __ASM volatile ("mrc p15, 0, %0, c1, c0, 2" : "=r" (__regCPACR));
bogdanm 0:9b334a45a8ff 1088 #else
bogdanm 0:9b334a45a8ff 1089 register uint32_t __regCPACR __ASM("cp15:0:c1:c0:2");
bogdanm 0:9b334a45a8ff 1090 #endif
bogdanm 0:9b334a45a8ff 1091 return __regCPACR;
bogdanm 0:9b334a45a8ff 1092 }
bogdanm 0:9b334a45a8ff 1093
bogdanm 0:9b334a45a8ff 1094 /** \brief Set CPACR
bogdanm 0:9b334a45a8ff 1095
bogdanm 0:9b334a45a8ff 1096 This function assigns the given value to the Coprocessor Access Control register.
bogdanm 0:9b334a45a8ff 1097
bogdanm 0:9b334a45a8ff 1098 \param [in] cpacr Coprocessor Acccess Control value to set
bogdanm 0:9b334a45a8ff 1099 */
bogdanm 0:9b334a45a8ff 1100 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_CPACR(uint32_t cpacr)
bogdanm 0:9b334a45a8ff 1101 {
bogdanm 0:9b334a45a8ff 1102 #if 1
bogdanm 0:9b334a45a8ff 1103 __ASM volatile ("mcr p15, 0, %0, c1, c0, 2" : : "r" (cpacr));
bogdanm 0:9b334a45a8ff 1104 #else
bogdanm 0:9b334a45a8ff 1105 register uint32_t __regCPACR __ASM("cp15:0:c1:c0:2");
bogdanm 0:9b334a45a8ff 1106 __regCPACR = cpacr;
bogdanm 0:9b334a45a8ff 1107 #endif
bogdanm 0:9b334a45a8ff 1108 __ISB();
bogdanm 0:9b334a45a8ff 1109 }
bogdanm 0:9b334a45a8ff 1110
bogdanm 0:9b334a45a8ff 1111 /** \brief Get CBAR
bogdanm 0:9b334a45a8ff 1112
bogdanm 0:9b334a45a8ff 1113 This function returns the value of the Configuration Base Address register.
bogdanm 0:9b334a45a8ff 1114
bogdanm 0:9b334a45a8ff 1115 \return Configuration Base Address register value
bogdanm 0:9b334a45a8ff 1116 */
bogdanm 0:9b334a45a8ff 1117 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_CBAR() {
bogdanm 0:9b334a45a8ff 1118 #if 1
bogdanm 0:9b334a45a8ff 1119 register uint32_t __regCBAR;
bogdanm 0:9b334a45a8ff 1120 __ASM volatile ("mrc p15, 4, %0, c15, c0, 0" : "=r" (__regCBAR));
bogdanm 0:9b334a45a8ff 1121 #else
bogdanm 0:9b334a45a8ff 1122 register uint32_t __regCBAR __ASM("cp15:4:c15:c0:0");
bogdanm 0:9b334a45a8ff 1123 #endif
bogdanm 0:9b334a45a8ff 1124 return(__regCBAR);
bogdanm 0:9b334a45a8ff 1125 }
bogdanm 0:9b334a45a8ff 1126
bogdanm 0:9b334a45a8ff 1127 /** \brief Get TTBR0
bogdanm 0:9b334a45a8ff 1128
bogdanm 0:9b334a45a8ff 1129 This function returns the value of the Translation Table Base Register 0.
bogdanm 0:9b334a45a8ff 1130
bogdanm 0:9b334a45a8ff 1131 \return Translation Table Base Register 0 value
bogdanm 0:9b334a45a8ff 1132 */
bogdanm 0:9b334a45a8ff 1133 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_TTBR0() {
bogdanm 0:9b334a45a8ff 1134 #if 1
bogdanm 0:9b334a45a8ff 1135 register uint32_t __regTTBR0;
bogdanm 0:9b334a45a8ff 1136 __ASM volatile ("mrc p15, 0, %0, c2, c0, 0" : "=r" (__regTTBR0));
bogdanm 0:9b334a45a8ff 1137 #else
bogdanm 0:9b334a45a8ff 1138 register uint32_t __regTTBR0 __ASM("cp15:0:c2:c0:0");
bogdanm 0:9b334a45a8ff 1139 #endif
bogdanm 0:9b334a45a8ff 1140 return(__regTTBR0);
bogdanm 0:9b334a45a8ff 1141 }
bogdanm 0:9b334a45a8ff 1142
bogdanm 0:9b334a45a8ff 1143 /** \brief Set TTBR0
bogdanm 0:9b334a45a8ff 1144
bogdanm 0:9b334a45a8ff 1145 This function assigns the given value to the Translation Table Base Register 0.
bogdanm 0:9b334a45a8ff 1146
bogdanm 0:9b334a45a8ff 1147 \param [in] ttbr0 Translation Table Base Register 0 value to set
bogdanm 0:9b334a45a8ff 1148 */
bogdanm 0:9b334a45a8ff 1149 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_TTBR0(uint32_t ttbr0) {
bogdanm 0:9b334a45a8ff 1150 #if 1
bogdanm 0:9b334a45a8ff 1151 __ASM volatile ("mcr p15, 0, %0, c2, c0, 0" : : "r" (ttbr0));
bogdanm 0:9b334a45a8ff 1152 #else
bogdanm 0:9b334a45a8ff 1153 register uint32_t __regTTBR0 __ASM("cp15:0:c2:c0:0");
bogdanm 0:9b334a45a8ff 1154 __regTTBR0 = ttbr0;
bogdanm 0:9b334a45a8ff 1155 #endif
bogdanm 0:9b334a45a8ff 1156 __ISB();
bogdanm 0:9b334a45a8ff 1157 }
bogdanm 0:9b334a45a8ff 1158
bogdanm 0:9b334a45a8ff 1159 /** \brief Get DACR
bogdanm 0:9b334a45a8ff 1160
bogdanm 0:9b334a45a8ff 1161 This function returns the value of the Domain Access Control Register.
bogdanm 0:9b334a45a8ff 1162
bogdanm 0:9b334a45a8ff 1163 \return Domain Access Control Register value
bogdanm 0:9b334a45a8ff 1164 */
bogdanm 0:9b334a45a8ff 1165 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_DACR() {
bogdanm 0:9b334a45a8ff 1166 #if 1
bogdanm 0:9b334a45a8ff 1167 register uint32_t __regDACR;
bogdanm 0:9b334a45a8ff 1168 __ASM volatile ("mrc p15, 0, %0, c3, c0, 0" : "=r" (__regDACR));
bogdanm 0:9b334a45a8ff 1169 #else
bogdanm 0:9b334a45a8ff 1170 register uint32_t __regDACR __ASM("cp15:0:c3:c0:0");
bogdanm 0:9b334a45a8ff 1171 #endif
bogdanm 0:9b334a45a8ff 1172 return(__regDACR);
bogdanm 0:9b334a45a8ff 1173 }
bogdanm 0:9b334a45a8ff 1174
bogdanm 0:9b334a45a8ff 1175 /** \brief Set DACR
bogdanm 0:9b334a45a8ff 1176
bogdanm 0:9b334a45a8ff 1177 This function assigns the given value to the Domain Access Control Register.
bogdanm 0:9b334a45a8ff 1178
bogdanm 0:9b334a45a8ff 1179 \param [in] dacr Domain Access Control Register value to set
bogdanm 0:9b334a45a8ff 1180 */
bogdanm 0:9b334a45a8ff 1181 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_DACR(uint32_t dacr) {
bogdanm 0:9b334a45a8ff 1182 #if 1
bogdanm 0:9b334a45a8ff 1183 __ASM volatile ("mcr p15, 0, %0, c3, c0, 0" : : "r" (dacr));
bogdanm 0:9b334a45a8ff 1184 #else
bogdanm 0:9b334a45a8ff 1185 register uint32_t __regDACR __ASM("cp15:0:c3:c0:0");
bogdanm 0:9b334a45a8ff 1186 __regDACR = dacr;
bogdanm 0:9b334a45a8ff 1187 #endif
bogdanm 0:9b334a45a8ff 1188 __ISB();
bogdanm 0:9b334a45a8ff 1189 }
bogdanm 0:9b334a45a8ff 1190
bogdanm 0:9b334a45a8ff 1191 /******************************** Cache and BTAC enable ****************************************************/
bogdanm 0:9b334a45a8ff 1192
bogdanm 0:9b334a45a8ff 1193 /** \brief Set SCTLR
bogdanm 0:9b334a45a8ff 1194
bogdanm 0:9b334a45a8ff 1195 This function assigns the given value to the System Control Register.
bogdanm 0:9b334a45a8ff 1196
bogdanm 0:9b334a45a8ff 1197 \param [in] sctlr System Control Register value to set
bogdanm 0:9b334a45a8ff 1198 */
bogdanm 0:9b334a45a8ff 1199 __attribute__( ( always_inline ) ) __STATIC_INLINE void __set_SCTLR(uint32_t sctlr)
bogdanm 0:9b334a45a8ff 1200 {
bogdanm 0:9b334a45a8ff 1201 #if 1
bogdanm 0:9b334a45a8ff 1202 __ASM volatile ("mcr p15, 0, %0, c1, c0, 0" : : "r" (sctlr));
bogdanm 0:9b334a45a8ff 1203 #else
bogdanm 0:9b334a45a8ff 1204 register uint32_t __regSCTLR __ASM("cp15:0:c1:c0:0");
bogdanm 0:9b334a45a8ff 1205 __regSCTLR = sctlr;
bogdanm 0:9b334a45a8ff 1206 #endif
bogdanm 0:9b334a45a8ff 1207 }
bogdanm 0:9b334a45a8ff 1208
bogdanm 0:9b334a45a8ff 1209 /** \brief Get SCTLR
bogdanm 0:9b334a45a8ff 1210
bogdanm 0:9b334a45a8ff 1211 This function returns the value of the System Control Register.
bogdanm 0:9b334a45a8ff 1212
bogdanm 0:9b334a45a8ff 1213 \return System Control Register value
bogdanm 0:9b334a45a8ff 1214 */
bogdanm 0:9b334a45a8ff 1215 __attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_SCTLR() {
bogdanm 0:9b334a45a8ff 1216 #if 1
bogdanm 0:9b334a45a8ff 1217 register uint32_t __regSCTLR;
bogdanm 0:9b334a45a8ff 1218 __ASM volatile ("mrc p15, 0, %0, c1, c0, 0" : "=r" (__regSCTLR));
bogdanm 0:9b334a45a8ff 1219 #else
bogdanm 0:9b334a45a8ff 1220 register uint32_t __regSCTLR __ASM("cp15:0:c1:c0:0");
bogdanm 0:9b334a45a8ff 1221 #endif
bogdanm 0:9b334a45a8ff 1222 return(__regSCTLR);
bogdanm 0:9b334a45a8ff 1223 }
bogdanm 0:9b334a45a8ff 1224
bogdanm 0:9b334a45a8ff 1225 /** \brief Enable Caches
bogdanm 0:9b334a45a8ff 1226
bogdanm 0:9b334a45a8ff 1227 Enable Caches
bogdanm 0:9b334a45a8ff 1228 */
bogdanm 0:9b334a45a8ff 1229 __attribute__( ( always_inline ) ) __STATIC_INLINE void __enable_caches(void) {
bogdanm 0:9b334a45a8ff 1230 // Set I bit 12 to enable I Cache
bogdanm 0:9b334a45a8ff 1231 // Set C bit 2 to enable D Cache
bogdanm 0:9b334a45a8ff 1232 __set_SCTLR( __get_SCTLR() | (1 << 12) | (1 << 2));
bogdanm 0:9b334a45a8ff 1233 }
bogdanm 0:9b334a45a8ff 1234
bogdanm 0:9b334a45a8ff 1235 /** \brief Disable Caches
bogdanm 0:9b334a45a8ff 1236
bogdanm 0:9b334a45a8ff 1237 Disable Caches
bogdanm 0:9b334a45a8ff 1238 */
bogdanm 0:9b334a45a8ff 1239 __attribute__( ( always_inline ) ) __STATIC_INLINE void __disable_caches(void) {
bogdanm 0:9b334a45a8ff 1240 // Clear I bit 12 to disable I Cache
bogdanm 0:9b334a45a8ff 1241 // Clear C bit 2 to disable D Cache
bogdanm 0:9b334a45a8ff 1242 __set_SCTLR( __get_SCTLR() & ~(1 << 12) & ~(1 << 2));
bogdanm 0:9b334a45a8ff 1243 __ISB();
bogdanm 0:9b334a45a8ff 1244 }
bogdanm 0:9b334a45a8ff 1245
bogdanm 0:9b334a45a8ff 1246 /** \brief Enable BTAC
bogdanm 0:9b334a45a8ff 1247
bogdanm 0:9b334a45a8ff 1248 Enable BTAC
bogdanm 0:9b334a45a8ff 1249 */
bogdanm 0:9b334a45a8ff 1250 __attribute__( ( always_inline ) ) __STATIC_INLINE void __enable_btac(void) {
bogdanm 0:9b334a45a8ff 1251 // Set Z bit 11 to enable branch prediction
bogdanm 0:9b334a45a8ff 1252 __set_SCTLR( __get_SCTLR() | (1 << 11));
bogdanm 0:9b334a45a8ff 1253 __ISB();
bogdanm 0:9b334a45a8ff 1254 }
bogdanm 0:9b334a45a8ff 1255
bogdanm 0:9b334a45a8ff 1256 /** \brief Disable BTAC
bogdanm 0:9b334a45a8ff 1257
bogdanm 0:9b334a45a8ff 1258 Disable BTAC
bogdanm 0:9b334a45a8ff 1259 */
bogdanm 0:9b334a45a8ff 1260 __attribute__( ( always_inline ) ) __STATIC_INLINE void __disable_btac(void) {
bogdanm 0:9b334a45a8ff 1261 // Clear Z bit 11 to disable branch prediction
bogdanm 0:9b334a45a8ff 1262 __set_SCTLR( __get_SCTLR() & ~(1 << 11));
bogdanm 0:9b334a45a8ff 1263 }
bogdanm 0:9b334a45a8ff 1264
bogdanm 0:9b334a45a8ff 1265
bogdanm 0:9b334a45a8ff 1266 /** \brief Enable MMU
bogdanm 0:9b334a45a8ff 1267
bogdanm 0:9b334a45a8ff 1268 Enable MMU
bogdanm 0:9b334a45a8ff 1269 */
bogdanm 0:9b334a45a8ff 1270 __attribute__( ( always_inline ) ) __STATIC_INLINE void __enable_mmu(void) {
bogdanm 0:9b334a45a8ff 1271 // Set M bit 0 to enable the MMU
bogdanm 0:9b334a45a8ff 1272 // Set AFE bit to enable simplified access permissions model
bogdanm 0:9b334a45a8ff 1273 // Clear TRE bit to disable TEX remap and A bit to disable strict alignment fault checking
bogdanm 0:9b334a45a8ff 1274 __set_SCTLR( (__get_SCTLR() & ~(1 << 28) & ~(1 << 1)) | 1 | (1 << 29));
bogdanm 0:9b334a45a8ff 1275 __ISB();
bogdanm 0:9b334a45a8ff 1276 }
bogdanm 0:9b334a45a8ff 1277
bogdanm 0:9b334a45a8ff 1278 /** \brief Disable MMU
bogdanm 0:9b334a45a8ff 1279
bogdanm 0:9b334a45a8ff 1280 Disable MMU
bogdanm 0:9b334a45a8ff 1281 */
bogdanm 0:9b334a45a8ff 1282 __attribute__( ( always_inline ) ) __STATIC_INLINE void __disable_mmu(void) {
bogdanm 0:9b334a45a8ff 1283 // Clear M bit 0 to disable the MMU
bogdanm 0:9b334a45a8ff 1284 __set_SCTLR( __get_SCTLR() & ~1);
bogdanm 0:9b334a45a8ff 1285 __ISB();
bogdanm 0:9b334a45a8ff 1286 }
bogdanm 0:9b334a45a8ff 1287
bogdanm 0:9b334a45a8ff 1288 /******************************** TLB maintenance operations ************************************************/
bogdanm 0:9b334a45a8ff 1289 /** \brief Invalidate the whole tlb
bogdanm 0:9b334a45a8ff 1290
bogdanm 0:9b334a45a8ff 1291 TLBIALL. Invalidate the whole tlb
bogdanm 0:9b334a45a8ff 1292 */
bogdanm 0:9b334a45a8ff 1293
bogdanm 0:9b334a45a8ff 1294 __attribute__( ( always_inline ) ) __STATIC_INLINE void __ca9u_inv_tlb_all(void) {
bogdanm 0:9b334a45a8ff 1295 #if 1
bogdanm 0:9b334a45a8ff 1296 __ASM volatile ("mcr p15, 0, %0, c8, c7, 0" : : "r" (0));
bogdanm 0:9b334a45a8ff 1297 #else
bogdanm 0:9b334a45a8ff 1298 register uint32_t __TLBIALL __ASM("cp15:0:c8:c7:0");
bogdanm 0:9b334a45a8ff 1299 __TLBIALL = 0;
bogdanm 0:9b334a45a8ff 1300 #endif
bogdanm 0:9b334a45a8ff 1301 __DSB();
bogdanm 0:9b334a45a8ff 1302 __ISB();
bogdanm 0:9b334a45a8ff 1303 }
bogdanm 0:9b334a45a8ff 1304
bogdanm 0:9b334a45a8ff 1305 /******************************** BTB maintenance operations ************************************************/
bogdanm 0:9b334a45a8ff 1306 /** \brief Invalidate entire branch predictor array
bogdanm 0:9b334a45a8ff 1307
bogdanm 0:9b334a45a8ff 1308 BPIALL. Branch Predictor Invalidate All.
bogdanm 0:9b334a45a8ff 1309 */
bogdanm 0:9b334a45a8ff 1310
bogdanm 0:9b334a45a8ff 1311 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_btac(void) {
bogdanm 0:9b334a45a8ff 1312 #if 1
bogdanm 0:9b334a45a8ff 1313 __ASM volatile ("mcr p15, 0, %0, c7, c5, 6" : : "r" (0));
bogdanm 0:9b334a45a8ff 1314 #else
bogdanm 0:9b334a45a8ff 1315 register uint32_t __BPIALL __ASM("cp15:0:c7:c5:6");
bogdanm 0:9b334a45a8ff 1316 __BPIALL = 0;
bogdanm 0:9b334a45a8ff 1317 #endif
bogdanm 0:9b334a45a8ff 1318 __DSB(); //ensure completion of the invalidation
bogdanm 0:9b334a45a8ff 1319 __ISB(); //ensure instruction fetch path sees new state
bogdanm 0:9b334a45a8ff 1320 }
bogdanm 0:9b334a45a8ff 1321
bogdanm 0:9b334a45a8ff 1322
bogdanm 0:9b334a45a8ff 1323 /******************************** L1 cache operations ******************************************************/
bogdanm 0:9b334a45a8ff 1324
bogdanm 0:9b334a45a8ff 1325 /** \brief Invalidate the whole I$
bogdanm 0:9b334a45a8ff 1326
bogdanm 0:9b334a45a8ff 1327 ICIALLU. Instruction Cache Invalidate All to PoU
bogdanm 0:9b334a45a8ff 1328 */
bogdanm 0:9b334a45a8ff 1329 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_icache_all(void) {
bogdanm 0:9b334a45a8ff 1330 #if 1
bogdanm 0:9b334a45a8ff 1331 __ASM volatile ("mcr p15, 0, %0, c7, c5, 0" : : "r" (0));
bogdanm 0:9b334a45a8ff 1332 #else
bogdanm 0:9b334a45a8ff 1333 register uint32_t __ICIALLU __ASM("cp15:0:c7:c5:0");
bogdanm 0:9b334a45a8ff 1334 __ICIALLU = 0;
bogdanm 0:9b334a45a8ff 1335 #endif
bogdanm 0:9b334a45a8ff 1336 __DSB(); //ensure completion of the invalidation
bogdanm 0:9b334a45a8ff 1337 __ISB(); //ensure instruction fetch path sees new I cache state
bogdanm 0:9b334a45a8ff 1338 }
bogdanm 0:9b334a45a8ff 1339
bogdanm 0:9b334a45a8ff 1340 /** \brief Clean D$ by MVA
bogdanm 0:9b334a45a8ff 1341
bogdanm 0:9b334a45a8ff 1342 DCCMVAC. Data cache clean by MVA to PoC
bogdanm 0:9b334a45a8ff 1343 */
bogdanm 0:9b334a45a8ff 1344 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_clean_dcache_mva(void *va) {
bogdanm 0:9b334a45a8ff 1345 #if 1
bogdanm 0:9b334a45a8ff 1346 __ASM volatile ("mcr p15, 0, %0, c7, c10, 1" : : "r" ((uint32_t)va));
bogdanm 0:9b334a45a8ff 1347 #else
bogdanm 0:9b334a45a8ff 1348 register uint32_t __DCCMVAC __ASM("cp15:0:c7:c10:1");
bogdanm 0:9b334a45a8ff 1349 __DCCMVAC = (uint32_t)va;
bogdanm 0:9b334a45a8ff 1350 #endif
bogdanm 0:9b334a45a8ff 1351 __DMB(); //ensure the ordering of data cache maintenance operations and their effects
bogdanm 0:9b334a45a8ff 1352 }
bogdanm 0:9b334a45a8ff 1353
bogdanm 0:9b334a45a8ff 1354 /** \brief Invalidate D$ by MVA
bogdanm 0:9b334a45a8ff 1355
bogdanm 0:9b334a45a8ff 1356 DCIMVAC. Data cache invalidate by MVA to PoC
bogdanm 0:9b334a45a8ff 1357 */
bogdanm 0:9b334a45a8ff 1358 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_dcache_mva(void *va) {
bogdanm 0:9b334a45a8ff 1359 #if 1
bogdanm 0:9b334a45a8ff 1360 __ASM volatile ("mcr p15, 0, %0, c7, c6, 1" : : "r" ((uint32_t)va));
bogdanm 0:9b334a45a8ff 1361 #else
bogdanm 0:9b334a45a8ff 1362 register uint32_t __DCIMVAC __ASM("cp15:0:c7:c6:1");
bogdanm 0:9b334a45a8ff 1363 __DCIMVAC = (uint32_t)va;
bogdanm 0:9b334a45a8ff 1364 #endif
bogdanm 0:9b334a45a8ff 1365 __DMB(); //ensure the ordering of data cache maintenance operations and their effects
bogdanm 0:9b334a45a8ff 1366 }
bogdanm 0:9b334a45a8ff 1367
bogdanm 0:9b334a45a8ff 1368 /** \brief Clean and Invalidate D$ by MVA
bogdanm 0:9b334a45a8ff 1369
bogdanm 0:9b334a45a8ff 1370 DCCIMVAC. Data cache clean and invalidate by MVA to PoC
bogdanm 0:9b334a45a8ff 1371 */
bogdanm 0:9b334a45a8ff 1372 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_clean_inv_dcache_mva(void *va) {
bogdanm 0:9b334a45a8ff 1373 #if 1
bogdanm 0:9b334a45a8ff 1374 __ASM volatile ("mcr p15, 0, %0, c7, c14, 1" : : "r" ((uint32_t)va));
bogdanm 0:9b334a45a8ff 1375 #else
bogdanm 0:9b334a45a8ff 1376 register uint32_t __DCCIMVAC __ASM("cp15:0:c7:c14:1");
bogdanm 0:9b334a45a8ff 1377 __DCCIMVAC = (uint32_t)va;
bogdanm 0:9b334a45a8ff 1378 #endif
bogdanm 0:9b334a45a8ff 1379 __DMB(); //ensure the ordering of data cache maintenance operations and their effects
bogdanm 0:9b334a45a8ff 1380 }
bogdanm 0:9b334a45a8ff 1381
bogdanm 0:9b334a45a8ff 1382 /** \brief Clean and Invalidate the entire data or unified cache
bogdanm 0:9b334a45a8ff 1383
bogdanm 0:9b334a45a8ff 1384 Generic mechanism for cleaning/invalidating the entire data or unified cache to the point of coherency.
bogdanm 0:9b334a45a8ff 1385 */
bogdanm 0:9b334a45a8ff 1386 extern void __v7_all_cache(uint32_t op);
bogdanm 0:9b334a45a8ff 1387
bogdanm 0:9b334a45a8ff 1388
bogdanm 0:9b334a45a8ff 1389 /** \brief Invalidate the whole D$
bogdanm 0:9b334a45a8ff 1390
bogdanm 0:9b334a45a8ff 1391 DCISW. Invalidate by Set/Way
bogdanm 0:9b334a45a8ff 1392 */
bogdanm 0:9b334a45a8ff 1393
bogdanm 0:9b334a45a8ff 1394 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_dcache_all(void) {
bogdanm 0:9b334a45a8ff 1395 __v7_all_cache(0);
bogdanm 0:9b334a45a8ff 1396 }
bogdanm 0:9b334a45a8ff 1397
bogdanm 0:9b334a45a8ff 1398 /** \brief Clean the whole D$
bogdanm 0:9b334a45a8ff 1399
bogdanm 0:9b334a45a8ff 1400 DCCSW. Clean by Set/Way
bogdanm 0:9b334a45a8ff 1401 */
bogdanm 0:9b334a45a8ff 1402
bogdanm 0:9b334a45a8ff 1403 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_clean_dcache_all(void) {
bogdanm 0:9b334a45a8ff 1404 __v7_all_cache(1);
bogdanm 0:9b334a45a8ff 1405 }
bogdanm 0:9b334a45a8ff 1406
bogdanm 0:9b334a45a8ff 1407 /** \brief Clean and invalidate the whole D$
bogdanm 0:9b334a45a8ff 1408
bogdanm 0:9b334a45a8ff 1409 DCCISW. Clean and Invalidate by Set/Way
bogdanm 0:9b334a45a8ff 1410 */
bogdanm 0:9b334a45a8ff 1411
bogdanm 0:9b334a45a8ff 1412 __attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_clean_inv_dcache_all(void) {
bogdanm 0:9b334a45a8ff 1413 __v7_all_cache(2);
bogdanm 0:9b334a45a8ff 1414 }
bogdanm 0:9b334a45a8ff 1415
bogdanm 0:9b334a45a8ff 1416 #include "core_ca_mmu.h"
bogdanm 0:9b334a45a8ff 1417
bogdanm 0:9b334a45a8ff 1418 #elif (defined (__TASKING__)) /*--------------- TASKING Compiler -----------------*/
bogdanm 0:9b334a45a8ff 1419
bogdanm 0:9b334a45a8ff 1420 #error TASKING Compiler support not implemented for Cortex-A
bogdanm 0:9b334a45a8ff 1421
bogdanm 0:9b334a45a8ff 1422 #endif
bogdanm 0:9b334a45a8ff 1423
bogdanm 0:9b334a45a8ff 1424 /*@} end of CMSIS_Core_RegAccFunctions */
bogdanm 0:9b334a45a8ff 1425
bogdanm 0:9b334a45a8ff 1426
bogdanm 0:9b334a45a8ff 1427 #endif /* __CORE_CAFUNC_H__ */