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/*
* Copyright 2018-2019 NXP
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "fsl_common.h"
#include "fsl_debug_console.h"
#include "board.h"
#if defined(SDK_I2C_BASED_COMPONENT_USED) && SDK_I2C_BASED_COMPONENT_USED
#include "fsl_lpi2c.h"
#endif /* SDK_I2C_BASED_COMPONENT_USED */
#include "fsl_iomuxc.h"
/*******************************************************************************
* Variables
******************************************************************************/
/*******************************************************************************
* Code
******************************************************************************/
/* Get debug console frequency. */
uint32_t BOARD_DebugConsoleSrcFreq(void)
{
uint32_t freq;
/* To make it simple, we assume default PLL and divider settings, and the only variable
from application is use PLL3 source or OSC source */
if (CLOCK_GetMux(kCLOCK_UartMux) == 0) /* PLL3 div6 80M */
{
freq = (CLOCK_GetPllFreq(kCLOCK_PllUsb1) / 6U) / (CLOCK_GetDiv(kCLOCK_UartDiv) + 1U);
}
else
{
freq = CLOCK_GetOscFreq() / (CLOCK_GetDiv(kCLOCK_UartDiv) + 1U);
}
return freq;
}
/* Initialize debug console. */
void BOARD_InitDebugConsole(void)
{
uint32_t uartClkSrcFreq = BOARD_DebugConsoleSrcFreq();
DbgConsole_Init(BOARD_DEBUG_UART_INSTANCE, BOARD_DEBUG_UART_BAUDRATE, BOARD_DEBUG_UART_TYPE, uartClkSrcFreq);
}
/* MPU configuration. */
void BOARD_ConfigMPU(void)
{
#if defined(__CC_ARM) || defined(__ARMCC_VERSION)
extern uint32_t Image$$RW_m_ncache$$Base[];
/* RW_m_ncache_unused is a auxiliary region which is used to get the whole size of noncache section */
extern uint32_t Image$$RW_m_ncache_unused$$Base[];
extern uint32_t Image$$RW_m_ncache_unused$$ZI$$Limit[];
uint32_t nonCacheStart = (uint32_t)Image$$RW_m_ncache$$Base;
uint32_t size = ((uint32_t)Image$$RW_m_ncache_unused$$Base == nonCacheStart) ?
0 :
((uint32_t)Image$$RW_m_ncache_unused$$ZI$$Limit - nonCacheStart);
#elif defined(__MCUXPRESSO)
extern uint32_t __base_NCACHE_REGION;
extern uint32_t __top_NCACHE_REGION;
uint32_t nonCacheStart = (uint32_t)(&__base_NCACHE_REGION);
uint32_t size = (uint32_t)(&__top_NCACHE_REGION) - nonCacheStart;
#elif defined(__ICCARM__) || defined(__GNUC__)
extern uint32_t __NCACHE_REGION_START[];
extern uint32_t __NCACHE_REGION_SIZE[];
uint32_t nonCacheStart = (uint32_t)__NCACHE_REGION_START;
uint32_t size = (uint32_t)__NCACHE_REGION_SIZE;
#endif
volatile uint32_t i = 0;
/* Disable I cache and D cache */
if (SCB_CCR_IC_Msk == (SCB_CCR_IC_Msk & SCB->CCR))
{
SCB_DisableICache();
}
if (SCB_CCR_DC_Msk == (SCB_CCR_DC_Msk & SCB->CCR))
{
SCB_DisableDCache();
}
/* Disable MPU */
ARM_MPU_Disable();
/* MPU configure:
* Use ARM_MPU_RASR(DisableExec, AccessPermission, TypeExtField, IsShareable, IsCacheable, IsBufferable,
* SubRegionDisable, Size)
* API in mpu_armv7.h.
* param DisableExec Instruction access (XN) disable bit,0=instruction fetches enabled, 1=instruction fetches
* disabled.
* param AccessPermission Data access permissions, allows you to configure read/write access for User and
* Privileged mode.
* Use MACROS defined in mpu_armv7.h:
* ARM_MPU_AP_NONE/ARM_MPU_AP_PRIV/ARM_MPU_AP_URO/ARM_MPU_AP_FULL/ARM_MPU_AP_PRO/ARM_MPU_AP_RO
* Combine TypeExtField/IsShareable/IsCacheable/IsBufferable to configure MPU memory access attributes.
* TypeExtField IsShareable IsCacheable IsBufferable Memory Attribtue Shareability Cache
* 0 x 0 0 Strongly Ordered shareable
* 0 x 0 1 Device shareable
* 0 0 1 0 Normal not shareable Outer and inner write
* through no write allocate
* 0 0 1 1 Normal not shareable Outer and inner write
* back no write allocate
* 0 1 1 0 Normal shareable Outer and inner write
* through no write allocate
* 0 1 1 1 Normal shareable Outer and inner write
* back no write allocate
* 1 0 0 0 Normal not shareable outer and inner
* noncache
* 1 1 0 0 Normal shareable outer and inner
* noncache
* 1 0 1 1 Normal not shareable outer and inner write
* back write/read acllocate
* 1 1 1 1 Normal shareable outer and inner write
* back write/read acllocate
* 2 x 0 0 Device not shareable
* Above are normal use settings, if your want to see more details or want to config different inner/outter cache
* policy.
* please refer to Table 4-55 /4-56 in arm cortex-M7 generic user guide <dui0646b_cortex_m7_dgug.pdf>
* param SubRegionDisable Sub-region disable field. 0=sub-region is enabled, 1=sub-region is disabled.
* param Size Region size of the region to be configured. use ARM_MPU_REGION_SIZE_xxx MACRO in
* mpu_armv7.h.
*/
/*
* Add default region to deny access to whole address space to workaround speculative prefetch.
* Refer to Arm errata 1013783-B for more details.
*
*/
/* Region 0 setting: Instruction access disabled, No data access permission. */
MPU->RBAR = ARM_MPU_RBAR(0, 0x00000000U);
MPU->RASR = ARM_MPU_RASR(1, ARM_MPU_AP_NONE, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_4GB);
/* Region 1 setting: Memory with Device type, not shareable, non-cacheable. */
MPU->RBAR = ARM_MPU_RBAR(1, 0x80000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_512MB);
/* Region 2 setting: Memory with Device type, not shareable, non-cacheable. */
MPU->RBAR = ARM_MPU_RBAR(2, 0x60000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_512MB);
#if defined(XIP_EXTERNAL_FLASH) && (XIP_EXTERNAL_FLASH == 1)
/* Region 3 setting: Memory with Normal type, not shareable, outer/inner write back. */
MPU->RBAR = ARM_MPU_RBAR(3, 0x60000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_RO, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_16MB);
#endif
/* Region 4 setting: Memory with Device type, not shareable, non-cacheable. */
MPU->RBAR = ARM_MPU_RBAR(4, 0x00000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_1GB);
/* Region 5 setting: Memory with Normal type, not shareable, outer/inner write back */
MPU->RBAR = ARM_MPU_RBAR(5, 0x00000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_32KB);
/* Region 6 setting: Memory with Normal type, not shareable, outer/inner write back */
MPU->RBAR = ARM_MPU_RBAR(6, 0x20000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_32KB);
/* Region 7 setting: Memory with Normal type, not shareable, outer/inner write back */
MPU->RBAR = ARM_MPU_RBAR(7, 0x20200000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_64KB);
while ((size >> i) > 0x1U)
{
i++;
}
if (i != 0)
{
/* The MPU region size should be 2^N, 5<=N<=32, region base should be multiples of size. */
assert(!(nonCacheStart % size));
assert(size == (uint32_t)(1 << i));
assert(i >= 5);
/* Region 8 setting: Memory with Normal type, not shareable, non-cacheable */
MPU->RBAR = ARM_MPU_RBAR(8, nonCacheStart);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 1, 0, 0, 0, 0, i - 1);
}
/* Region 9 setting: Memory with Device type, not shareable, non-cacheable */
MPU->RBAR = ARM_MPU_RBAR(9, 0x40000000);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_4MB);
/* Enable MPU */
ARM_MPU_Enable(MPU_CTRL_PRIVDEFENA_Msk);
/* Enable I cache and D cache */
SCB_EnableDCache();
SCB_EnableICache();
}
#if defined(SDK_I2C_BASED_COMPONENT_USED) && SDK_I2C_BASED_COMPONENT_USED
void BOARD_LPI2C_Init(LPI2C_Type *base, uint32_t clkSrc_Hz)
{
lpi2c_master_config_t lpi2cConfig = {0};
/*
* lpi2cConfig.debugEnable = false;
* lpi2cConfig.ignoreAck = false;
* lpi2cConfig.pinConfig = kLPI2C_2PinOpenDrain;
* lpi2cConfig.baudRate_Hz = 100000U;
* lpi2cConfig.busIdleTimeout_ns = 0;
* lpi2cConfig.pinLowTimeout_ns = 0;
* lpi2cConfig.sdaGlitchFilterWidth_ns = 0;
* lpi2cConfig.sclGlitchFilterWidth_ns = 0;
*/
LPI2C_MasterGetDefaultConfig(&lpi2cConfig);
LPI2C_MasterInit(base, &lpi2cConfig, clkSrc_Hz);
}
status_t BOARD_LPI2C_Send(LPI2C_Type *base,
uint8_t deviceAddress,
uint32_t subAddress,
uint8_t subAddressSize,
uint8_t *txBuff,
uint8_t txBuffSize)
{
lpi2c_master_transfer_t xfer;
xfer.flags = kLPI2C_TransferDefaultFlag;
xfer.slaveAddress = deviceAddress;
xfer.direction = kLPI2C_Write;
xfer.subaddress = subAddress;
xfer.subaddressSize = subAddressSize;
xfer.data = txBuff;
xfer.dataSize = txBuffSize;
return LPI2C_MasterTransferBlocking(base, &xfer);
}
status_t BOARD_LPI2C_Receive(LPI2C_Type *base,
uint8_t deviceAddress,
uint32_t subAddress,
uint8_t subAddressSize,
uint8_t *rxBuff,
uint8_t rxBuffSize)
{
lpi2c_master_transfer_t xfer;
xfer.flags = kLPI2C_TransferDefaultFlag;
xfer.slaveAddress = deviceAddress;
xfer.direction = kLPI2C_Read;
xfer.subaddress = subAddress;
xfer.subaddressSize = subAddressSize;
xfer.data = rxBuff;
xfer.dataSize = rxBuffSize;
return LPI2C_MasterTransferBlocking(base, &xfer);
}
void BOARD_Accel_I2C_Init(void)
{
BOARD_LPI2C_Init(BOARD_ACCEL_I2C_BASEADDR, BOARD_ACCEL_I2C_CLOCK_FREQ);
}
status_t BOARD_Accel_I2C_Send(uint8_t deviceAddress, uint32_t subAddress, uint8_t subaddressSize, uint32_t txBuff)
{
uint8_t data = (uint8_t)txBuff;
return BOARD_LPI2C_Send(BOARD_ACCEL_I2C_BASEADDR, deviceAddress, subAddress, subaddressSize, &data, 1);
}
status_t BOARD_Accel_I2C_Receive(
uint8_t deviceAddress, uint32_t subAddress, uint8_t subaddressSize, uint8_t *rxBuff, uint8_t rxBuffSize)
{
return BOARD_LPI2C_Receive(BOARD_ACCEL_I2C_BASEADDR, deviceAddress, subAddress, subaddressSize, rxBuff, rxBuffSize);
}
void BOARD_Codec_I2C_Init(void)
{
BOARD_LPI2C_Init(BOARD_CODEC_I2C_BASEADDR, BOARD_CODEC_I2C_CLOCK_FREQ);
}
status_t BOARD_Codec_I2C_Send(
uint8_t deviceAddress, uint32_t subAddress, uint8_t subAddressSize, const uint8_t *txBuff, uint8_t txBuffSize)
{
return BOARD_LPI2C_Send(BOARD_CODEC_I2C_BASEADDR, deviceAddress, subAddress, subAddressSize, (uint8_t *)txBuff,
txBuffSize);
}
status_t BOARD_Codec_I2C_Receive(
uint8_t deviceAddress, uint32_t subAddress, uint8_t subAddressSize, uint8_t *rxBuff, uint8_t rxBuffSize)
{
return BOARD_LPI2C_Receive(BOARD_CODEC_I2C_BASEADDR, deviceAddress, subAddress, subAddressSize, rxBuff, rxBuffSize);
}
#endif /*SDK_I2C_BASED_COMPONENT_USED */
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