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Diffstat (limited to '')
| -rw-r--r-- | bsps/arm/imxrt/mcux-sdk/drivers/common/fsl_common_arm.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/bsps/arm/imxrt/mcux-sdk/drivers/common/fsl_common_arm.c b/bsps/arm/imxrt/mcux-sdk/drivers/common/fsl_common_arm.c new file mode 100644 index 0000000000..241005e922 --- /dev/null +++ b/bsps/arm/imxrt/mcux-sdk/drivers/common/fsl_common_arm.c @@ -0,0 +1,249 @@ +/* + * Copyright (c) 2015-2016, Freescale Semiconductor, Inc. + * Copyright 2016-2021 NXP + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include "fsl_common.h" + +/* Component ID definition, used by tools. */ +#ifndef FSL_COMPONENT_ID +#define FSL_COMPONENT_ID "platform.drivers.common_arm" +#endif + +#ifndef __GIC_PRIO_BITS +#if defined(ENABLE_RAM_VECTOR_TABLE) +uint32_t InstallIRQHandler(IRQn_Type irq, uint32_t irqHandler) +{ +#ifdef __VECTOR_TABLE +#undef __VECTOR_TABLE +#endif + +/* Addresses for VECTOR_TABLE and VECTOR_RAM come from the linker file */ +#if defined(__CC_ARM) || defined(__ARMCC_VERSION) + extern uint32_t Image$$VECTOR_ROM$$Base[]; + extern uint32_t Image$$VECTOR_RAM$$Base[]; + extern uint32_t Image$$RW_m_data$$Base[]; + +#define __VECTOR_TABLE Image$$VECTOR_ROM$$Base +#define __VECTOR_RAM Image$$VECTOR_RAM$$Base +#define __RAM_VECTOR_TABLE_SIZE (((uint32_t)Image$$RW_m_data$$Base - (uint32_t)Image$$VECTOR_RAM$$Base)) +#elif defined(__ICCARM__) + extern uint32_t __RAM_VECTOR_TABLE_SIZE[]; + extern uint32_t __VECTOR_TABLE[]; + extern uint32_t __VECTOR_RAM[]; +#elif defined(__GNUC__) + extern uint32_t __VECTOR_TABLE[]; + extern uint32_t __VECTOR_RAM[]; + extern uint32_t __RAM_VECTOR_TABLE_SIZE_BYTES[]; + uint32_t __RAM_VECTOR_TABLE_SIZE = (uint32_t)(__RAM_VECTOR_TABLE_SIZE_BYTES); +#endif /* defined(__CC_ARM) || defined(__ARMCC_VERSION) */ + uint32_t n; + uint32_t ret; + uint32_t irqMaskValue; + + irqMaskValue = DisableGlobalIRQ(); + if (SCB->VTOR != (uint32_t)__VECTOR_RAM) + { + /* Copy the vector table from ROM to RAM */ + for (n = 0; n < ((uint32_t)__RAM_VECTOR_TABLE_SIZE) / sizeof(uint32_t); n++) + { + __VECTOR_RAM[n] = __VECTOR_TABLE[n]; + } + /* Point the VTOR to the position of vector table */ + SCB->VTOR = (uint32_t)__VECTOR_RAM; + } + + ret = __VECTOR_RAM[(int32_t)irq + 16]; + /* make sure the __VECTOR_RAM is noncachable */ + __VECTOR_RAM[(int32_t)irq + 16] = irqHandler; + + EnableGlobalIRQ(irqMaskValue); + + return ret; +} +#endif /* ENABLE_RAM_VECTOR_TABLE. */ +#endif /* __GIC_PRIO_BITS. */ + +#if (defined(FSL_FEATURE_SOC_SYSCON_COUNT) && (FSL_FEATURE_SOC_SYSCON_COUNT > 0)) + +/* + * When FSL_FEATURE_POWERLIB_EXTEND is defined to non-zero value, + * powerlib should be used instead of these functions. + */ +#if !(defined(FSL_FEATURE_POWERLIB_EXTEND) && (FSL_FEATURE_POWERLIB_EXTEND != 0)) + +/* + * When the SYSCON STARTER registers are discontinuous, these functions are + * implemented in fsl_power.c. + */ +#if !(defined(FSL_FEATURE_SYSCON_STARTER_DISCONTINUOUS) && FSL_FEATURE_SYSCON_STARTER_DISCONTINUOUS) + +void EnableDeepSleepIRQ(IRQn_Type interrupt) +{ + uint32_t intNumber = (uint32_t)interrupt; + + uint32_t index = 0; + + while (intNumber >= 32u) + { + index++; + intNumber -= 32u; + } + + SYSCON->STARTERSET[index] = 1UL << intNumber; + (void)EnableIRQ(interrupt); /* also enable interrupt at NVIC */ +} + +void DisableDeepSleepIRQ(IRQn_Type interrupt) +{ + uint32_t intNumber = (uint32_t)interrupt; + + (void)DisableIRQ(interrupt); /* also disable interrupt at NVIC */ + uint32_t index = 0; + + while (intNumber >= 32u) + { + index++; + intNumber -= 32u; + } + + SYSCON->STARTERCLR[index] = 1UL << intNumber; +} +#endif /* FSL_FEATURE_SYSCON_STARTER_DISCONTINUOUS */ +#endif /* FSL_FEATURE_POWERLIB_EXTEND */ +#endif /* FSL_FEATURE_SOC_SYSCON_COUNT */ + +#if defined(DWT) +/* Use WDT. */ +void MSDK_EnableCpuCycleCounter(void) +{ + /* Make sure the DWT trace fucntion is enabled. */ + if (CoreDebug_DEMCR_TRCENA_Msk != (CoreDebug_DEMCR_TRCENA_Msk & CoreDebug->DEMCR)) + { + CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk; + } + + /* CYCCNT not supported on this device. */ + assert(DWT_CTRL_NOCYCCNT_Msk != (DWT->CTRL & DWT_CTRL_NOCYCCNT_Msk)); + + /* Read CYCCNT directly if CYCCENT has already been enabled, otherwise enable CYCCENT first. */ + if (DWT_CTRL_CYCCNTENA_Msk != (DWT_CTRL_CYCCNTENA_Msk & DWT->CTRL)) + { + DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk; + } +} + +uint32_t MSDK_GetCpuCycleCount(void) +{ + return DWT->CYCCNT; +} +#endif /* defined(DWT) */ + +#if !(defined(SDK_DELAY_USE_DWT) && defined(DWT)) +/* Use software loop. */ +#if defined(__CC_ARM) /* This macro is arm v5 specific */ +/* clang-format off */ +__ASM static void DelayLoop(uint32_t count) +{ +loop + SUBS R0, R0, #1 + CMP R0, #0 + BNE loop + BX LR +} +#elif defined(__ARM_ARCH_8A__) /* This macro is ARMv8-A specific */ +static void DelayLoop(uint32_t count) +{ + __ASM volatile(" MOV X0, %0" : : "r"(count)); + __ASM volatile( + "loop: \n" + " SUB X0, X0, #1 \n" + " CMP X0, #0 \n" + + " BNE loop \n" + : + : + : "r0"); +} +/* clang-format on */ +#elif defined(__ARMCC_VERSION) || defined(__ICCARM__) || defined(__GNUC__) +/* Cortex-M0 has a smaller instruction set, SUBS isn't supported in thumb-16 mode reported from __GNUC__ compiler, + * use SUB and CMP here for compatibility */ +static void DelayLoop(uint32_t count) +{ + __ASM volatile(" MOV R0, %0" : : "r"(count)); + __ASM volatile( + "loop: \n" +#if defined(__GNUC__) && !defined(__ARMCC_VERSION) + " SUB R0, R0, #1 \n" +#else + " SUBS R0, R0, #1 \n" +#endif + " CMP R0, #0 \n" + + " BNE loop \n" + : + : + : "r0"); +} +#endif /* defined(__CC_ARM) */ +#endif /* defined(SDK_DELAY_USE_DWT) && defined(DWT) */ + +/*! + * @brief Delay at least for some time. + * Please note that, if not uses DWT, this API will use while loop for delay, different run-time environments have + * effect on the delay time. If precise delay is needed, please enable DWT delay. The two parmeters delayTime_us and + * coreClock_Hz have limitation. For example, in the platform with 1GHz coreClock_Hz, the delayTime_us only supports + * up to 4294967 in current code. If long time delay is needed, please implement a new delay function. + * + * @param delayTime_us Delay time in unit of microsecond. + * @param coreClock_Hz Core clock frequency with Hz. + */ +void SDK_DelayAtLeastUs(uint32_t delayTime_us, uint32_t coreClock_Hz) +{ + uint64_t count; + + if (delayTime_us > 0U) + { + count = USEC_TO_COUNT(delayTime_us, coreClock_Hz); + + assert(count <= UINT32_MAX); + +#if defined(SDK_DELAY_USE_DWT) && defined(DWT) /* Use DWT for better accuracy */ + + MSDK_EnableCpuCycleCounter(); + /* Calculate the count ticks. */ + count += MSDK_GetCpuCycleCount(); + + if (count > UINT32_MAX) + { + count -= UINT32_MAX; + /* Wait for cyccnt overflow. */ + while (count < MSDK_GetCpuCycleCount()) + { + } + } + + /* Wait for cyccnt reach count value. */ + while (count > MSDK_GetCpuCycleCount()) + { + } +#else + /* Divide value may be different in various environment to ensure delay is precise. + * Every loop count includes three instructions, due to Cortex-M7 sometimes executes + * two instructions in one period, through test here set divide 1.5. Other M cores use + * divide 4. By the way, divide 1.5 or 4 could let the count lose precision, but it does + * not matter because other instructions outside while loop is enough to fill the time. + */ +#if (__CORTEX_M == 7) + count = count / 3U * 2U; +#else + count = count / 4U; +#endif + DelayLoop((uint32_t)count); +#endif /* defined(SDK_DELAY_USE_DWT) && defined(DWT) */ + } +} |