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void BOARD_InitHardware(void)
{
SM_Platform_Init();
BOARD_InitBootPins();
BOARD_BootClockRUN();
BOARD_InitDebugConsole();
BOARD_ConfigMPU();
}
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(__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;
#if defined(__ICACHE_PRESENT) && __ICACHE_PRESENT
/* Disable I cache and D cache */
if (SCB_CCR_IC_Msk == (SCB_CCR_IC_Msk & SCB->CCR))
{
SCB_DisableICache();
}
#endif
#if defined(__DCACHE_PRESENT) && __DCACHE_PRESENT
if (SCB_CCR_DC_Msk == (SCB_CCR_DC_Msk & SCB->CCR))
{
SCB_DisableDCache();
}
#endif
/* 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 Attribute 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/outer 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, 0, 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, 0x4C800000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_512MB);
/* Region 3 setting: Memory with Device type, not shareable, non-cacheable. */
MPU->RBAR = ARM_MPU_RBAR(3, 0x00000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_1GB);
/* Region 4 setting: Memory with Normal type, not shareable, outer/inner write back */
MPU->RBAR = ARM_MPU_RBAR(4, 0x00000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_256KB);
/* Region 5 setting: Memory with Normal type, shareable, outer/inner write back */
MPU->RBAR = ARM_MPU_RBAR(5, 0x20000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 1, 1, 1, 0, ARM_MPU_REGION_SIZE_256KB);
#if defined(CACHE_MODE_WRITE_THROUGH) && CACHE_MODE_WRITE_THROUGH
/* Region 6 setting: Memory with Normal type, not shareable, write through */
MPU->RBAR = ARM_MPU_RBAR(6, 0x20200000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 0, 0, ARM_MPU_REGION_SIZE_1MB);
#else
/* Region 6 setting: Memory with Normal type, not shareable, outer/inner write back */
MPU->RBAR = ARM_MPU_RBAR(6, 0x20200000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_1MB);
#endif
/* Region 8 setting: Memory with Normal type, not shareable, outer/inner write back. */
MPU->RBAR = ARM_MPU_RBAR(8, 0x28000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_128MB);
#ifdef USE_SDRAM
#if defined(CACHE_MODE_WRITE_THROUGH) && CACHE_MODE_WRITE_THROUGH
/* Region 9 setting: Memory with Normal type, not shareable, write trough */
MPU->RBAR = ARM_MPU_RBAR(9, 0x80000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 0, 0, ARM_MPU_REGION_SIZE_64MB);
#else
/* Region 9 setting: Memory with Normal type, not shareable, outer/inner write back */
MPU->RBAR = ARM_MPU_RBAR(9, 0x80000000U);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_64MB);
#endif
#endif
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 10 setting: Memory with Normal type, shareable, non-cacheable */
MPU->RBAR = ARM_MPU_RBAR(10, nonCacheStart);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 1, 1, 0, 0, 0, i - 1);
}
/* Region 11 setting: Memory with Device type, not shareable, non-cacheable */
MPU->RBAR = ARM_MPU_RBAR(11, 0x40000000);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_512KB);
/* Region 12 setting: Memory with Device type, not shareable, non-cacheable */
MPU->RBAR = ARM_MPU_RBAR(12, 0x42000000);
MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_64MB);
/* Region 13 setting: Memory with Device type, not shareable, non-cacheable */
MPU->RBAR = ARM_MPU_RBAR(13, 0x49000000);
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 | MPU_CTRL_HFNMIENA_Msk);
/* Enable I cache and D cache */
#if defined(__DCACHE_PRESENT) && __DCACHE_PRESENT
SCB_EnableDCache();
#endif
#if defined(__ICACHE_PRESENT) && __ICACHE_PRESENT
SCB_EnableICache();
#endif
}
#define __MPU_PRESENT 1 /**< Defines if an MPU is present or not */
#define __ICACHE_PRESENT 1 /**< Defines if an ICACHE is present or not */
#define __DCACHE_PRESENT 1 /**< Defines if an DCACHE is present or not */
#define __DTCM_PRESENT 1 /**< Defines if an DTCM is present or not */
#define __NVIC_PRIO_BITS 4 /**< Number of priority bits implemented in the NVIC */
#define __Vendor_SysTickConfig 0 /**< Vendor specific implementation of SysTickConfig is defined */
#define __FPU_PRESENT 1 /**< Defines if an FPU is present or not */
#include "core_cm7.h" /* Core Peripheral Access Layer */
#include "system_MIMX9596_cm7.h" /* Device specific configuration file */