diff options
Diffstat (limited to 'os/common/ext/ARM/CMSIS/Core_A/Include/cmsis_gcc.h')
| -rw-r--r-- | os/common/ext/ARM/CMSIS/Core_A/Include/cmsis_gcc.h | 955 |
1 files changed, 955 insertions, 0 deletions
diff --git a/os/common/ext/ARM/CMSIS/Core_A/Include/cmsis_gcc.h b/os/common/ext/ARM/CMSIS/Core_A/Include/cmsis_gcc.h new file mode 100644 index 000000000..4e95b82fb --- /dev/null +++ b/os/common/ext/ARM/CMSIS/Core_A/Include/cmsis_gcc.h @@ -0,0 +1,955 @@ +/**************************************************************************//** + * @file cmsis_gcc.h + * @brief CMSIS compiler specific macros, functions, instructions + * @version V1.00 + * @date 06. Jul 2017 + ******************************************************************************/ +/* + * Copyright (c) 2009-2017 ARM Limited. All rights reserved. + * + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed under the Apache License, Version 2.0 (the License); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an AS IS BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __CMSIS_GCC_H +#define __CMSIS_GCC_H + +/* ignore some GCC warnings */ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wsign-conversion" +#pragma GCC diagnostic ignored "-Wconversion" +#pragma GCC diagnostic ignored "-Wunused-parameter" + +/* Fallback for __has_builtin */ +#ifndef __has_builtin + #define __has_builtin(x) (0) +#endif + +/* CMSIS compiler specific defines */ +#ifndef __ASM + #define __ASM asm +#endif +#ifndef __INLINE + #define __INLINE inline +#endif +#ifndef __STATIC_INLINE + #define __STATIC_INLINE static inline +#endif +#ifndef __NO_RETURN + #define __NO_RETURN __attribute__((noreturn)) +#endif +#ifndef __USED + #define __USED __attribute__((used)) +#endif +#ifndef __WEAK + #define __WEAK __attribute__((weak)) +#endif +#ifndef __PACKED + #define __PACKED __attribute__((packed, aligned(1))) +#endif +#ifndef __PACKED_STRUCT + #define __PACKED_STRUCT struct __attribute__((packed, aligned(1))) +#endif +#ifndef __UNALIGNED_UINT16_WRITE + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wpacked" +/*lint -esym(9058, T_UINT16_WRITE)*/ /* disable MISRA 2012 Rule 2.4 for T_UINT16_WRITE */ + __PACKED_STRUCT T_UINT16_WRITE { uint16_t v; }; + #pragma GCC diagnostic pop + #define __UNALIGNED_UINT16_WRITE(addr, val) (void)((((struct T_UINT16_WRITE *)(void *)(addr))->v) = (val)) +#endif +#ifndef __UNALIGNED_UINT16_READ + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wpacked" +/*lint -esym(9058, T_UINT16_READ)*/ /* disable MISRA 2012 Rule 2.4 for T_UINT16_READ */ + __PACKED_STRUCT T_UINT16_READ { uint16_t v; }; + #pragma GCC diagnostic pop + #define __UNALIGNED_UINT16_READ(addr) (((const struct T_UINT16_READ *)(const void *)(addr))->v) +#endif +#ifndef __UNALIGNED_UINT32_WRITE + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wpacked" +/*lint -esym(9058, T_UINT32_WRITE)*/ /* disable MISRA 2012 Rule 2.4 for T_UINT32_WRITE */ + __PACKED_STRUCT T_UINT32_WRITE { uint32_t v; }; + #pragma GCC diagnostic pop + #define __UNALIGNED_UINT32_WRITE(addr, val) (void)((((struct T_UINT32_WRITE *)(void *)(addr))->v) = (val)) +#endif +#ifndef __UNALIGNED_UINT32_READ + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wpacked" + __PACKED_STRUCT T_UINT32_READ { uint32_t v; }; + #pragma GCC diagnostic pop + #define __UNALIGNED_UINT32_READ(addr) (((const struct T_UINT32_READ *)(const void *)(addr))->v) +#endif +#ifndef __ALIGNED + #define __ALIGNED(x) __attribute__((aligned(x))) +#endif + + +/* ########################### Core Function Access ########################### */ + +/** + \brief Enable IRQ Interrupts + \details Enables IRQ interrupts by clearing the I-bit in the CPSR. + Can only be executed in Privileged modes. + */ +__attribute__( ( always_inline ) ) __STATIC_INLINE void __enable_irq(void) +{ + __ASM volatile ("cpsie i" : : : "memory"); +} + +/** + \brief Disable IRQ Interrupts + \details Disables IRQ interrupts by setting the I-bit in the CPSR. + Can only be executed in Privileged modes. + */ +__attribute__( ( always_inline ) ) __STATIC_INLINE void __disable_irq(void) +{ + __ASM volatile ("cpsid i" : : : "memory"); +} + +/** + \brief Get FPSCR + \details Returns the current value of the Floating Point Status/Control register. + \return Floating Point Status/Control register value +*/ +__attribute__((always_inline)) __STATIC_INLINE uint32_t __get_FPSCR(void) +{ + #if ((defined (__FPU_PRESENT) && (__FPU_PRESENT == 1U)) && \ + (defined (__FPU_USED ) && (__FPU_USED == 1U)) ) + #if __has_builtin(__builtin_arm_get_fpscr) || (__GNUC__ > 7) || (__GNUC__ == 7 && __GNUC_MINOR__ >= 2) + /* see https://gcc.gnu.org/ml/gcc-patches/2017-04/msg00443.html */ + return __builtin_arm_get_fpscr(); + #else + uint32_t result; + + __ASM volatile ("VMRS %0, fpscr" : "=r" (result) ); + return(result); + #endif + #else + return(0U); + #endif +} + + +/** + \brief Set FPSCR + \details Assigns the given value to the Floating Point Status/Control register. + \param [in] fpscr Floating Point Status/Control value to set +*/ +__attribute__((always_inline)) __STATIC_INLINE void __set_FPSCR(uint32_t fpscr) +{ + #if ((defined (__FPU_PRESENT) && (__FPU_PRESENT == 1U)) && \ + (defined (__FPU_USED ) && (__FPU_USED == 1U)) ) + #if __has_builtin(__builtin_arm_set_fpscr) || (__GNUC__ > 7) || (__GNUC__ == 7 && __GNUC_MINOR__ >= 2) + /* see https://gcc.gnu.org/ml/gcc-patches/2017-04/msg00443.html */ + __builtin_arm_set_fpscr(fpscr); + #else + __ASM volatile ("VMSR fpscr, %0" : : "r" (fpscr) : "vfpcc", "memory"); + #endif + #else + (void)fpscr; + #endif +} + +/* ########################## Core Instruction Access ######################### */ +/** + \brief No Operation + */ +#define __NOP() __ASM volatile ("nop") + +/** + \brief Wait For Interrupt + */ +#define __WFI() __ASM volatile ("wfi") + +/** + \brief Wait For Event + */ +#define __WFE() __ASM volatile ("wfe") + +/** + \brief Send Event + */ +#define __SEV() __ASM volatile ("sev") + +/** + \brief Instruction Synchronization Barrier + \details Instruction Synchronization Barrier flushes the pipeline in the processor, + so that all instructions following the ISB are fetched from cache or memory, + after the instruction has been completed. + */ +__attribute__((always_inline)) __STATIC_INLINE void __ISB(void) +{ + __ASM volatile ("isb 0xF":::"memory"); +} + + +/** + \brief Data Synchronization Barrier + \details Acts as a special kind of Data Memory Barrier. + It completes when all explicit memory accesses before this instruction complete. + */ +__attribute__((always_inline)) __STATIC_INLINE void __DSB(void) +{ + __ASM volatile ("dsb 0xF":::"memory"); +} + +/** + \brief Data Memory Barrier + \details Ensures the apparent order of the explicit memory operations before + and after the instruction, without ensuring their completion. + */ +__attribute__((always_inline)) __STATIC_INLINE void __DMB(void) +{ + __ASM volatile ("dmb 0xF":::"memory"); +} + +/** + \brief Reverse byte order (32 bit) + \details Reverses the byte order in integer value. + \param [in] value Value to reverse + \return Reversed value + */ +__attribute__((always_inline)) __STATIC_INLINE uint32_t __REV(uint32_t value) +{ +#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) + return __builtin_bswap32(value); +#else + uint32_t result; + + __ASM volatile ("rev %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) ); + return(result); +#endif +} + +/** + \brief Reverse byte order (16 bit) + \param [in] value Value to reverse + \return Reversed value + */ +#ifndef __NO_EMBEDDED_ASM +__attribute__((section(".rev16_text"))) __STATIC_INLINE uint32_t __REV16(uint32_t value) +{ + uint32_t result; + __ASM volatile("rev16 %0, %1" : "=r" (result) : "r" (value)); + return result; +} +#endif + +/** + \brief Reverse byte order in signed short value + \details Reverses the byte order in a signed short value with sign extension to integer. + \param [in] value Value to reverse + \return Reversed value + */ +__attribute__((always_inline)) __STATIC_INLINE int32_t __REVSH(int32_t value) +{ +#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8) + return (short)__builtin_bswap16(value); +#else + int32_t result; + + __ASM volatile ("revsh %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) ); + return(result); +#endif +} + +/** + \brief Rotate Right in unsigned value (32 bit) + \details Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits. + \param [in] op1 Value to rotate + \param [in] op2 Number of Bits to rotate + \return Rotated value + */ +__attribute__((always_inline)) __STATIC_INLINE uint32_t __ROR(uint32_t op1, uint32_t op2) +{ + return (op1 >> op2) | (op1 << (32U - op2)); +} + +/** + \brief Breakpoint + \param [in] value is ignored by the processor. + If required, a debugger can use it to store additional information about the breakpoint. + */ +#define __BKPT(value) __ASM volatile ("bkpt "#value) + +/** + \brief Reverse bit order of value + \details Reverses the bit order of the given value. + \param [in] value Value to reverse + \return Reversed value + */ +__attribute__((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value) +{ + uint32_t result; + +#if ((defined (__ARM_ARCH_7M__ ) && (__ARM_ARCH_7M__ == 1)) || \ + (defined (__ARM_ARCH_7EM__ ) && (__ARM_ARCH_7EM__ == 1)) || \ + (defined (__ARM_ARCH_8M_MAIN__ ) && (__ARM_ARCH_8M_MAIN__ == 1)) ) + __ASM volatile ("rbit %0, %1" : "=r" (result) : "r" (value) ); +#else + int32_t s = (4 /*sizeof(v)*/ * 8) - 1; /* extra shift needed at end */ + + result = value; /* r will be reversed bits of v; first get LSB of v */ + for (value >>= 1U; value; value >>= 1U) + { + result <<= 1U; + result |= value & 1U; + s--; + } + result <<= s; /* shift when v's highest bits are zero */ +#endif + return(result); +} + +/** + \brief Count leading zeros + \param [in] value Value to count the leading zeros + \return number of leading zeros in value + */ +#define __CLZ __builtin_clz + +/** + \brief LDR Exclusive (8 bit) + \details Executes a exclusive LDR instruction for 8 bit value. + \param [in] ptr Pointer to data + \return value of type uint8_t at (*ptr) + */ +__attribute__((always_inline)) __STATIC_INLINE uint8_t __LDREXB(volatile uint8_t *addr) +{ + uint32_t result; + +#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8) + __ASM volatile ("ldrexb %0, %1" : "=r" (result) : "Q" (*addr) ); +#else + /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not + accepted by assembler. So has to use following less efficient pattern. + */ + __ASM volatile ("ldrexb %0, [%1]" : "=r" (result) : "r" (addr) : "memory" ); +#endif + return ((uint8_t) result); /* Add explicit type cast here */ +} + + +/** + \brief LDR Exclusive (16 bit) + \details Executes a exclusive LDR instruction for 16 bit values. + \param [in] ptr Pointer to data + \return value of type uint16_t at (*ptr) + */ +__attribute__((always_inline)) __STATIC_INLINE uint16_t __LDREXH(volatile uint16_t *addr) +{ + uint32_t result; + +#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8) + __ASM volatile ("ldrexh %0, %1" : "=r" (result) : "Q" (*addr) ); +#else + /* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not + accepted by assembler. So has to use following less efficient pattern. + */ + __ASM volatile ("ldrexh %0, [%1]" : "=r" (result) : "r" (addr) : "memory" ); +#endif + return ((uint16_t) result); /* Add explicit type cast here */ +} + + +/** + \brief LDR Exclusive (32 bit) + \details Executes a exclusive LDR instruction for 32 bit values. + \param [in] ptr Pointer to data + \return value of type uint32_t at (*ptr) + */ +__attribute__((always_inline)) __STATIC_INLINE uint32_t __LDREXW(volatile uint32_t *addr) +{ + uint32_t result; + + __ASM volatile ("ldrex %0, %1" : "=r" (result) : "Q" (*addr) ); + return(result); +} + + +/** + \brief STR Exclusive (8 bit) + \details Executes a exclusive STR instruction for 8 bit values. + \param [in] value Value to store + \param [in] ptr Pointer to location + \return 0 Function succeeded + \return 1 Function failed + */ +__attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXB(uint8_t value, volatile uint8_t *addr) +{ + uint32_t result; + + __ASM volatile ("strexb %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) ); + return(result); +} + + +/** + \brief STR Exclusive (16 bit) + \details Executes a exclusive STR instruction for 16 bit values. + \param [in] value Value to store + \param [in] ptr Pointer to location + \return 0 Function succeeded + \return 1 Function failed + */ +__attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXH(uint16_t value, volatile uint16_t *addr) +{ + uint32_t result; + + __ASM volatile ("strexh %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) ); + return(result); +} + + +/** + \brief STR Exclusive (32 bit) + \details Executes a exclusive STR instruction for 32 bit values. + \param [in] value Value to store + \param [in] ptr Pointer to location + \return 0 Function succeeded + \return 1 Function failed + */ +__attribute__((always_inline)) __STATIC_INLINE uint32_t __STREXW(uint32_t value, volatile uint32_t *addr) +{ + uint32_t result; + + __ASM volatile ("strex %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" (value) ); + return(result); +} + + +/** + \brief Remove the exclusive lock + \details Removes the exclusive lock which is created by LDREX. + */ +__attribute__((always_inline)) __STATIC_INLINE void __CLREX(void) +{ + __ASM volatile ("clrex" ::: "memory"); +} + +/** \brief Get CPSR Register + \return CPSR Register value + */ +__STATIC_INLINE uint32_t __get_CPSR(void) +{ + uint32_t result; + __ASM volatile("MRS %0, cpsr" : "=r" (result) ); + return(result); +} + +/** \brief Set CPSR Register + \param [in] cpsr CPSR value to set + */ +__STATIC_INLINE void __set_CPSR(uint32_t cpsr) +{ +__ASM volatile ("MSR cpsr, %0" : : "r" (cpsr) : "memory"); +} + +/** \brief Get Mode + \return Processor Mode + */ +__STATIC_INLINE uint32_t __get_mode(void) { + return (__get_CPSR() & 0x1FU); +} + +/** \brief Set Mode + \param [in] mode Mode value to set + */ +__STATIC_INLINE void __set_mode(uint32_t mode) { + __ASM volatile("MSR cpsr_c, %0" : : "r" (mode) : "memory"); +} + +/** \brief Set Stack Pointer + \param [in] stack Stack Pointer value to set + */ +__STATIC_INLINE void __set_SP(uint32_t stack) +{ + __ASM volatile("MOV sp, %0" : : "r" (stack) : "memory"); +} + +/** \brief Set USR/SYS Stack Pointer + \param [in] topOfProcStack USR/SYS Stack Pointer value to set + */ +__STATIC_INLINE void __set_SP_usr(uint32_t topOfProcStack) +{ + __ASM volatile( + ".preserve8 \n" + "BIC r0, r0, #7 \n" // ensure stack is 8-byte aligned + "MRS r1, cpsr \n" + "CPS #0x1F \n" // no effect in USR mode + "MOV sp, r0 \n" + "MSR cpsr_c, r1 \n" // no effect in USR mode + "ISB" + ); +} + +/** \brief Get FPEXC + \return Floating Point Exception Control register value + */ +__STATIC_INLINE uint32_t __get_FPEXC(void) +{ +#if (__FPU_PRESENT == 1) + uint32_t result; + __ASM volatile("MRS %0, fpexc" : "=r" (result) ); + return(result); +#else + return(0); +#endif +} + +/** \brief Set FPEXC + \param [in] fpexc Floating Point Exception Control value to set + */ +__STATIC_INLINE void __set_FPEXC(uint32_t fpexc) +{ +#if (__FPU_PRESENT == 1) + __ASM volatile ("MSR fpexc, %0" : : "r" (fpexc) : "memory"); +#endif +} + +/** \brief Get ACTLR + \return Auxiliary Control register value + */ +__STATIC_INLINE uint32_t __get_ACTLR(void) +{ + uint32_t result; + __ASM volatile("MRS %0, actlr" : "=r" (result) ); + return(result); +} + +/** \brief Set ACTLR + \param [in] actlr Auxiliary Control value to set + */ +__STATIC_INLINE void __set_ACTLR(uint32_t actlr) +{ + __ASM volatile ("MSR fpexc, %0" : : "r" (actlr) : "memory"); +} +/** \brief Get CPACR + \return Coprocessor Access Control register value + */ +__STATIC_INLINE uint32_t __get_CPACR(void) +{ + uint32_t result; + __ASM volatile("MRC p15, 0, %0, c1, c0, 2" : "=r"(result)); + return result; +} + +/** \brief Set CPACR + \param [in] cpacr Coprocessor Access Control value to set + */ +__STATIC_INLINE void __set_CPACR(uint32_t cpacr) +{ + __ASM volatile("MCR p15, 0, %0, c1, c0, 2" : : "r"(cpacr) : "memory"); +} + +/** \brief Get CBAR + \return Configuration Base Address register value + */ +__STATIC_INLINE uint32_t __get_CBAR() { + uint32_t result; + __ASM volatile("MRC p15, 4, %0, c15, c0, 0" : "=r"(result)); + return result; +} + +/** \brief Get TTBR0 + + This function returns the value of the Translation Table Base Register 0. + + \return Translation Table Base Register 0 value + */ +__STATIC_INLINE uint32_t __get_TTBR0() { + uint32_t result; + __ASM volatile("MRC p15, 0, %0, c2, c0, 0" : "=r"(result)); + return result; +} + +/** \brief Set TTBR0 + + This function assigns the given value to the Translation Table Base Register 0. + + \param [in] ttbr0 Translation Table Base Register 0 value to set + */ +__STATIC_INLINE void __set_TTBR0(uint32_t ttbr0) { + __ASM volatile("MCR p15, 0, %0, c2, c0, 0" : : "r"(ttbr0) : "memory"); +} + +/** \brief Get DACR + + This function returns the value of the Domain Access Control Register. + + \return Domain Access Control Register value + */ +__STATIC_INLINE uint32_t __get_DACR() { + uint32_t result; + __ASM volatile("MRC p15, 0, %0, c3, c0, 0" : "=r"(result)); + return result; +} + +/** \brief Set DACR + + This function assigns the given value to the Domain Access Control Register. + + \param [in] dacr Domain Access Control Register value to set + */ +__STATIC_INLINE void __set_DACR(uint32_t dacr) { + __ASM volatile("MCR p15, 0, %0, c3, c0, 0" : : "r"(dacr) : "memory"); +} + +/** \brief Set SCTLR + + This function assigns the given value to the System Control Register. + + \param [in] sctlr System Control Register value to set + */ +__STATIC_INLINE void __set_SCTLR(uint32_t sctlr) +{ + __ASM volatile("MCR p15, 0, %0, c1, c0, 0" : : "r"(sctlr) : "memory"); +} + +/** \brief Get SCTLR + \return System Control Register value + */ +__STATIC_INLINE uint32_t __get_SCTLR() { + uint32_t result; + __ASM volatile("MRC p15, 0, %0, c1, c0, 0" : "=r"(result)); + return result; +} + +/** \brief Set ACTRL + \param [in] actrl Auxiliary Control Register value to set + */ +__STATIC_INLINE void __set_ACTRL(uint32_t actrl) +{ + __ASM volatile("MCR p15, 0, %0, c1, c0, 1" : : "r"(actrl) : "memory"); +} + +/** \brief Get ACTRL + \return Auxiliary Control Register value + */ +__STATIC_INLINE uint32_t __get_ACTRL(void) +{ + uint32_t result; + __ASM volatile("MRC p15, 0, %0, c1, c0, 1" : "=r"(result)); + return result; +} + +/** \brief Get MPIDR + + This function returns the value of the Multiprocessor Affinity Register. + + \return Multiprocessor Affinity Register value + */ +__STATIC_INLINE uint32_t __get_MPIDR(void) +{ + uint32_t result; + __ASM volatile("MRC p15, 0, %0, c0, c0, 5" : "=r"(result)); + return result; +} + + /** \brief Get VBAR + + This function returns the value of the Vector Base Address Register. + + \return Vector Base Address Register + */ +__STATIC_INLINE uint32_t __get_VBAR(void) +{ + uint32_t result; + __ASM volatile("MRC p15, 0, %0, c12, c0, 0" : "=r"(result)); + return result; +} + +/** \brief Set VBAR + + This function assigns the given value to the Vector Base Address Register. + + \param [in] vbar Vector Base Address Register value to set + */ +__STATIC_INLINE void __set_VBAR(uint32_t vbar) +{ + __ASM volatile("MCR p15, 0, %0, c12, c0, 1" : : "r"(vbar) : "memory"); +} + +/** \brief Set CNTFRQ + + This function assigns the given value to PL1 Physical Timer Counter Frequency Register (CNTFRQ). + + \param [in] value CNTFRQ Register value to set +*/ +__STATIC_INLINE void __set_CNTFRQ(uint32_t value) { + __ASM volatile("MCR p15, 0, %0, c14, c0, 0" : : "r"(value) : "memory"); +} + +/** \brief Set CNTP_TVAL + + This function assigns the given value to PL1 Physical Timer Value Register (CNTP_TVAL). + + \param [in] value CNTP_TVAL Register value to set +*/ +__STATIC_INLINE void __set_CNTP_TVAL(uint32_t value) { + __ASM volatile("MCR p15, 0, %0, c14, c2, 0" : : "r"(value) : "memory"); +} + +/** \brief Get CNTP_TVAL + + This function returns the value of the PL1 Physical Timer Value Register (CNTP_TVAL). + + \return CNTP_TVAL Register value + */ +__STATIC_INLINE uint32_t __get_CNTP_TVAL() { + uint32_t result; + __ASM volatile("MRC p15, 0, %0, c14, c2, 0" : "=r"(result)); + return result; +} + +/** \brief Set CNTP_CTL + + This function assigns the given value to PL1 Physical Timer Control Register (CNTP_CTL). + + \param [in] value CNTP_CTL Register value to set +*/ +__STATIC_INLINE void __set_CNTP_CTL(uint32_t value) { + __ASM volatile("MCR p15, 0, %0, c14, c2, 1" : : "r"(value) : "memory"); +} + +/** \brief Get CNTP_CTL register + \return CNTP_CTL Register value + */ +__STATIC_INLINE uint32_t __get_CNTP_CTL() { + uint32_t result; + __ASM volatile("MRC p15, 0, %0, c14, c2, 1" : "=r"(result)); + return result; +} + +/** \brief Set TLBIALL + + TLB Invalidate All + */ +__STATIC_INLINE void __set_TLBIALL(uint32_t value) { + __ASM volatile("MCR p15, 0, %0, c8, c7, 0" : : "r"(value) : "memory"); +} + +/** \brief Set BPIALL. + + Branch Predictor Invalidate All + */ +__STATIC_INLINE void __set_BPIALL(uint32_t value) { + __ASM volatile("MCR p15, 0, %0, c7, c5, 6" : : "r"(value) : "memory"); +} + +/** \brief Set ICIALLU + + Instruction Cache Invalidate All + */ +__STATIC_INLINE void __set_ICIALLU(uint32_t value) { + __ASM volatile("MCR p15, 0, %0, c7, c5, 0" : : "r"(value) : "memory"); +} + +/** \brief Set DCCMVAC + + Data cache clean + */ +__STATIC_INLINE void __set_DCCMVAC(uint32_t value) { + __ASM volatile("MCR p15, 0, %0, c7, c10, 1" : : "r"(value) : "memory"); +} + +/** \brief Set DCIMVAC + + Data cache invalidate + */ +__STATIC_INLINE void __set_DCIMVAC(uint32_t value) { + __ASM volatile("MCR p15, 0, %0, c7, c6, 1" : : "r"(value) : "memory"); +} + +/** \brief Set DCCIMVAC + + Data cache clean and invalidate + */ +__STATIC_INLINE void __set_DCCIMVAC(uint32_t value) { + __ASM volatile("MCR p15, 0, %0, c7, c14, 1" : : "r"(value) : "memory"); +} + + +/** \brief Set CCSIDR + */ +__STATIC_INLINE void __set_CCSIDR(uint32_t value) { + __ASM volatile("MCR p15, 2, %0, c0, c0, 0" : : "r"(value) : "memory"); +} + +/** \brief Get CCSIDR + \return CCSIDR Register value + */ +__STATIC_INLINE uint32_t __get_CCSIDR() { + uint32_t result; + __ASM volatile("MRC p15, 1, %0, c0, c0, 0" : "=r"(result)); + return result; +} + +/** \brief Get CLIDR + \return CLIDR Register value + */ +__STATIC_INLINE uint32_t __get_CLIDR() { + uint32_t result; + __ASM volatile("MRC p15, 1, %0, c0, c0, 1" : "=r"(result)); + return result; +} + +__STATIC_INLINE int32_t log2_up(uint32_t n) +{ + int32_t log = -1; + uint32_t t = n; + while(t) + { + log++; t >>=1; + } + /* if n not power of 2 -> round up*/ + if ( n & (n - 1) ) log++; + return log; +} + +__STATIC_INLINE void __L1C_MaintainDCacheSetWay(uint32_t level, uint32_t maint) +{ + register volatile uint32_t Dummy; + register volatile uint32_t ccsidr; + uint32_t num_sets; + uint32_t num_ways; + uint32_t shift_way; + uint32_t log2_linesize; + uint32_t log2_num_ways; + + Dummy = level << 1; + /* set csselr, select ccsidr register */ + __set_CCSIDR(Dummy); + /* get current ccsidr register */ + ccsidr = __get_CCSIDR(); + num_sets = ((ccsidr & 0x0FFFE000) >> 13) + 1; + num_ways = ((ccsidr & 0x00001FF8) >> 3) + 1; + log2_linesize = (ccsidr & 0x00000007) + 2 + 2; + log2_num_ways = log2_up(num_ways); + shift_way = 32 - log2_num_ways; + for(int way = num_ways-1; way >= 0; way--) { + for(int set = num_sets-1; set >= 0; set--) { + Dummy = (level << 1) | (set << log2_linesize) | (way << shift_way); + switch (maint) + { + case 0: + __ASM volatile("MCR p15, 0, %0, c7, c6, 2" : : "r"(Dummy) : "memory"); // DCISW. Invalidate by Set/Way + break; + + case 1: + __ASM volatile("MCR p15, 0, %0, c7, c10, 2" : : "r"(Dummy) : "memory"); // DCCSW. Clean by Set/Way + break; + + default: + __ASM volatile("MCR p15, 0, %0, c7, c14, 2" : : "r"(Dummy) : "memory"); // DCCISW. Clean and Invalidate by Set/Way + break; + + } + } + } + __DMB(); +} + +/** \brief Clean and Invalidate the entire data or unified cache + + Generic mechanism for cleaning/invalidating the entire data or unified cache to the point of coherency + */ +__STATIC_INLINE void __L1C_CleanInvalidateCache(uint32_t op) { + register volatile uint32_t clidr; + uint32_t cache_type; + clidr = __get_CLIDR(); + for(uint32_t i = 0; i<7; i++) + { + cache_type = (clidr >> i*3) & 0x7UL; + if ((cache_type >= 2) && (cache_type <= 4)) + { + __L1C_MaintainDCacheSetWay(i, op); + } + } + +} + +/** \brief Enable Floating Point Unit + + Critical section, called from undef handler, so systick is disabled + */ +__STATIC_INLINE void __FPU_Enable(void) { + __ASM volatile( + //Permit access to VFP/NEON, registers by modifying CPACR + " MRC p15,0,R1,c1,c0,2 \n" + " ORR R1,R1,#0x00F00000 \n" + " MCR p15,0,R1,c1,c0,2 \n" + + //Ensure that subsequent instructions occur in the context of VFP/NEON access permitted + " ISB \n" + + //Enable VFP/NEON + " VMRS R1,FPEXC \n" + " ORR R1,R1,#0x40000000 \n" + " VMSR FPEXC,R1 \n" + + //Initialise VFP/NEON registers to 0 + " MOV R2,#0 \n" + +#if TARGET_FEATURE_EXTENSION_REGISTER_COUNT >= 16 + //Initialise D16 registers to 0 + " VMOV D0, R2,R2 \n" + " VMOV D1, R2,R2 \n" + " VMOV D2, R2,R2 \n" + " VMOV D3, R2,R2 \n" + " VMOV D4, R2,R2 \n" + " VMOV D5, R2,R2 \n" + " VMOV D6, R2,R2 \n" + " VMOV D7, R2,R2 \n" + " VMOV D8, R2,R2 \n" + " VMOV D9, R2,R2 \n" + " VMOV D10,R2,R2 \n" + " VMOV D11,R2,R2 \n" + " VMOV D12,R2,R2 \n" + " VMOV D13,R2,R2 \n" + " VMOV D14,R2,R2 \n" + " VMOV D15,R2,R2 \n" +#endif + +#if TARGET_FEATURE_EXTENSION_REGISTER_COUNT == 32 + //Initialise D32 registers to 0 + " VMOV D16,R2,R2 \n" + " VMOV D17,R2,R2 \n" + " VMOV D18,R2,R2 \n" + " VMOV D19,R2,R2 \n" + " VMOV D20,R2,R2 \n" + " VMOV D21,R2,R2 \n" + " VMOV D22,R2,R2 \n" + " VMOV D23,R2,R2 \n" + " VMOV D24,R2,R2 \n" + " VMOV D25,R2,R2 \n" + " VMOV D26,R2,R2 \n" + " VMOV D27,R2,R2 \n" + " VMOV D28,R2,R2 \n" + " VMOV D29,R2,R2 \n" + " VMOV D30,R2,R2 \n" + " VMOV D31,R2,R2 \n" +#endif + ); + + // Initialise FPSCR to a known state + // Mask off all bits that do not have to be preserved. Non-preserved bits can/should be zero. + __set_FPSCR(__get_FPSCR() & 0x00086060u); +} + +#pragma GCC diagnostic pop + +#endif /* __CMSIS_GCC_H */ |