blob: a685715001a8270307b628798d6178d68f1f5c70 [file] [log] [blame]
/*
* Copyright 2017 NXP
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "fsl_common.h"
#include "fsl_debug_console.h"
#include "board.h"
#include "fsl_rdc.h"
#include "fsl_iomuxc.h"
#include "pin_mux.h"
#include "fsl_clock.h"
/*******************************************************************************
* Variables
******************************************************************************/
/*******************************************************************************
* Code
******************************************************************************/
/* Initialize debug console. */
void BOARD_InitDebugConsole(void)
{
uint32_t uartClkSrcFreq = BOARD_DEBUG_UART_CLK_FREQ;
CLOCK_EnableClock(kCLOCK_Uart2);
DbgConsole_Init(BOARD_DEBUG_UART_INSTANCE, BOARD_DEBUG_UART_BAUDRATE, BOARD_DEBUG_UART_TYPE, uartClkSrcFreq);
}
/* Initialize MPU, configure non-cacheable memory */
void BOARD_InitMemory(void)
{
#if defined(__CC_ARM) || defined(__ARMCC_VERSION)
extern uint32_t Load$$LR$$LR_cache_region$$Base[];
extern uint32_t Image$$ARM_LIB_STACK$$ZI$$Limit[];
uint32_t cacheStart = (uint32_t)Load$$LR$$LR_cache_region$$Base;
uint32_t size = (cacheStart < 0x20000000U) ? (0) : ((uint32_t)Image$$ARM_LIB_STACK$$ZI$$Limit - cacheStart);
#else
extern uint32_t __CACHE_REGION_START[];
extern uint32_t __CACHE_REGION_SIZE[];
uint32_t cacheStart = (uint32_t)__CACHE_REGION_START;
uint32_t size = (uint32_t)__CACHE_REGION_SIZE;
#endif
uint32_t i = 0;
/* Make sure outstanding transfers are done. */
__DMB();
/* Disable the MPU. */
MPU->CTRL = 0;
/*
* The ARMv7-M default address map define the address space 0x20000000 to 0x3FFFFFFF as SRAM with Normal type, but
* there the address space 0x28000000 ~ 0x3FFFFFFF has been physically mapped to smart subsystems, so there need
* change the default memory attributes.
* Since the base address of MPU region should be multiples of region size, to make it simple, the MPU region 0 set
* the all 512M of SRAM space with device attributes, then disable subregion 0 and 1 (address space 0x20000000 ~
* 0x27FFFFFF) to use the
* background memory attributes.
*/
/* Select Region 0 and set its base address to the M4 code bus start address. */
MPU->RBAR = (0x20000000U & MPU_RBAR_ADDR_Msk) | MPU_RBAR_VALID_Msk | (0 << MPU_RBAR_REGION_Pos);
/* Region 0 setting:
* 1) Disable Instruction Access;
* 2) AP = 011b, full access;
* 3) Non-shared device;
* 4) Region Not Shared;
* 5) Sub-Region 0,1 Disabled;
* 6) MPU Protection Region size = 512M byte;
* 7) Enable Region 0.
*/
MPU->RASR = (0x1 << MPU_RASR_XN_Pos) | (0x3 << MPU_RASR_AP_Pos) | (0x2 << MPU_RASR_TEX_Pos) |
(0x3 << MPU_RASR_SRD_Pos) | (28 << MPU_RASR_SIZE_Pos) | MPU_RASR_ENABLE_Msk;
/*
* Non-cacheable area is provided in DDR memory, the DDR region 2MB - 128MB totally 126MB is revserved for CM4
* cores. You can put global or static uninitialized variables in NonCacheable section(initialized variables in
* NonCacheable.init section) to make them uncacheable. Since the base address of MPU region should be multiples of
* region size,
* to make it simple, the MPU region 1 & 2 set all DDR address space 0x40000000 ~ 0xBFFFFFFF to be non-cacheable).
* Then MPU region 3 set the text and data section to be cacheable if the program running on DDR.
* The cacheable area base address should be multiples of its size in linker file, they can be modified per your
* needs.
*/
/* Select Region 1 and set its base address to the DDR start address. */
MPU->RBAR = (0x40000000U & MPU_RBAR_ADDR_Msk) | MPU_RBAR_VALID_Msk | (1 << MPU_RBAR_REGION_Pos);
/* Region 1 setting:
* 1) Enable Instruction Access;
* 2) AP = 011b, full access;
* 3) Shared Device;
* 4) MPU Protection Region size = 1024M byte;
* 5) Enable Region 1.
*/
MPU->RASR = (0x3 << MPU_RASR_AP_Pos) | (0x1 << MPU_RASR_B_Pos) | (29 << MPU_RASR_SIZE_Pos) | MPU_RASR_ENABLE_Msk;
/* Select Region 2 and set its base address to the DDR start address. */
MPU->RBAR = (0x80000000U & MPU_RBAR_ADDR_Msk) | MPU_RBAR_VALID_Msk | (2 << MPU_RBAR_REGION_Pos);
/* Region 2 setting:
* 1) Enable Instruction Access;
* 2) AP = 011b, full access;
* 3) Shared Device;
* 4) MPU Protection Region size = 1024M byte;
* 5) Enable Region 2.
*/
MPU->RASR = (0x3 << MPU_RASR_AP_Pos) | (0x1 << MPU_RASR_B_Pos) | (29 << MPU_RASR_SIZE_Pos) | MPU_RASR_ENABLE_Msk;
while ((size >> i) > 0x1U)
{
i++;
}
/* If run on DDR, configure text and data section to be cacheable */
if (i != 0)
{
/* The MPU region size should be 2^N, 5<=N<=32, region base should be multiples of size. */
assert((size & (size - 1)) == 0);
assert(!(cacheStart % size));
assert(size == (uint32_t)(1 << i));
assert(i >= 5);
/* Select Region 3 and set its base address to the cache able region start address. */
MPU->RBAR = (cacheStart & MPU_RBAR_ADDR_Msk) | MPU_RBAR_VALID_Msk | (3 << MPU_RBAR_REGION_Pos);
/* Region 3 setting:
* 1) Enable Instruction Access;
* 2) AP = 011b, full access;
* 3) Outer and inner Cacheable, write and read allocate;
* 4) Region Not Shared;
* 5) All Sub-Region Enabled;
* 6) MPU Protection Region size get from linker file;
* 7) Enable Region 3.
*/
MPU->RASR = (0x3 << MPU_RASR_AP_Pos) | (0x1 << MPU_RASR_TEX_Pos) | (0x1 << MPU_RASR_C_Pos) |
(0x1 << MPU_RASR_B_Pos) | ((i - 1) << MPU_RASR_SIZE_Pos) | MPU_RASR_ENABLE_Msk;
}
/* Enable Privileged default memory map and the MPU. */
MPU->CTRL = MPU_CTRL_ENABLE_Msk | MPU_CTRL_PRIVDEFENA_Msk;
/* Memory barriers to ensure subsequence data & instruction
* transfers using updated MPU settings.
*/
__DSB();
__ISB();
}
void BOARD_RdcInit(void)
{
/* Move M4 core to specific RDC domain 1 */
rdc_domain_assignment_t assignment = {0};
assignment.domainId = BOARD_DOMAIN_ID;
RDC_SetMasterDomainAssignment(RDC, kRDC_Master_M4, &assignment);
/*
* The M4 core is running at domain 1, enable clock gate for Iomux and Gpio to run at domain 1.
*/
CLOCK_EnableClock(kCLOCK_Gpio1);
CLOCK_EnableClock(kCLOCK_Gpio2);
CLOCK_EnableClock(kCLOCK_Gpio3);
CLOCK_EnableClock(kCLOCK_Gpio4);
CLOCK_EnableClock(kCLOCK_Gpio5);
CLOCK_EnableClock(kCLOCK_Iomux0);
CLOCK_EnableClock(kCLOCK_Iomux1);
CLOCK_EnableClock(kCLOCK_Iomux2);
CLOCK_EnableClock(kCLOCK_Iomux3);
CLOCK_EnableClock(kCLOCK_Iomux4);
/*
* The M4 core is running at domain 1, enable the PLL clock sources to domain 1.
*/
CLOCK_ControlGate(kCLOCK_SysPll1Gate, kCLOCK_ClockNeededAll); /* Enabel SysPLL1 to Domain 1 */
CLOCK_ControlGate(kCLOCK_SysPll2Gate, kCLOCK_ClockNeededAll); /* Enable SysPLL2 to Domain 1 */
CLOCK_ControlGate(kCLOCK_SysPll3Gate, kCLOCK_ClockNeededAll); /* Enable SysPLL3 to Domain 1 */
CLOCK_ControlGate(kCLOCK_AudioPll1Gate, kCLOCK_ClockNeededAll); /* Enable AudioPLL1 to Domain 1 */
CLOCK_ControlGate(kCLOCK_AudioPll2Gate, kCLOCK_ClockNeededAll); /* Enable AudioPLL2 to Domain 1 */
CLOCK_ControlGate(kCLOCK_VideoPll1Gate, kCLOCK_ClockNeededAll); /* Enable VideoPLL1 to Domain 1 */
}