/* * File : board.c * This file is part of RT-Thread RTOS * COPYRIGHT (C) 2009 RT-Thread Develop Team * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.rt-thread.org/license/LICENSE * * Change Logs: * Date Author Notes * 2009-01-05 Bernard first implementation */ #include #include #include #include "board.h" #include "drv_uart.h" #if defined(RT_USING_SDRAM) && defined(RT_USING_MEMHEAP_AS_HEAP) static struct rt_memheap system_heap; #endif const clock_enet_pll_config_t enetPllConfig = { .enableClkOutput500M = true, }; /* SYS PLL configuration for RUN mode */ const clock_sys_pll_config_t sysPllConfig = { .loopDivider = 1U }; /* USB1 PLL configuration for RUN mode */ const clock_usb_pll_config_t usb1PllConfig = { .loopDivider = 0U }; static void BOARD_BootClockGate(void) { // /* Disable all unused peripheral clock */ // CCM->CCGR0 = 0x00C0000FU; // CCM->CCGR1 = 0x30000000U; // CCM->CCGR2 = 0x003F0030U; // CCM->CCGR3 = 0xF0000330U; // CCM->CCGR4 = 0x0000FF3CU; // CCM->CCGR5 = 0xF000330FU; // CCM->CCGR6 = 0x00FC0300U; } static void BOARD_BootClockRUN(void) { /* Boot ROM did initialize the XTAL, here we only sets external XTAL OSC freq */ CLOCK_SetXtalFreq(24000000U); CLOCK_SetRtcXtalFreq(32768U); CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 0x1); /* Set PERIPH_CLK2 MUX to OSC */ CLOCK_SetMux(kCLOCK_PeriphMux, 0x1); /* Set PERIPH_CLK MUX to PERIPH_CLK2 */ /* Setting the VDD_SOC to 1.25V. It is necessary to config AHB to max 500Mhz */ DCDC->REG3 = (DCDC->REG3 & (~DCDC_REG3_TRG_MASK)) | DCDC_REG3_TRG(0x12); #if defined (CPU_MIMXRT1021DAF5A) || defined (CPU_MIMXRT1021DAG5A) CLOCK_InitEnetPll(&enetPllConfig); /* Configure ENET PLL to 500M for AHBCLK */ #elif defined (CPU_MIMXRT1021CAF4A) || defined (CPU_MIMXRT1021CAG4A) CLOCK_InitSysPll(&sysPllConfig); /* Configure SYS PLL */ CLOCK_InitSysPfd(kCLOCK_Pfd3, 24);/* PLL2_PFD3 = 396MHz for AHB CLOOK ROOT */ #endif #ifndef SKIP_USB_PLL_INIT CLOCK_InitUsb1Pll(&usb1PllConfig); /* Configure USB1 PLL to 480M */ #endif #if defined (CPU_MIMXRT1021DAF5A) || defined (CPU_MIMXRT1021DAG5A) CLOCK_SetDiv(kCLOCK_ArmDiv, 0x0); /* Set ARM PODF to 0, divide by 2 */ CLOCK_SetDiv(kCLOCK_AhbDiv, 0x0); /* Set AHB PODF to 0, divide by 1 */ CLOCK_SetDiv(kCLOCK_IpgDiv, 0x3); /* Set IPG PODF to 3, divede by 4 */ CLOCK_SetMux(kCLOCK_PrePeriphMux, 0x3); /* Set PRE_PERIPH_CLK to PLL6, 500M */ CLOCK_SetMux(kCLOCK_PeriphMux, 0x0); /* Set PERIPH_CLK MUX to PRE_PERIPH_CLK */ #elif defined (CPU_MIMXRT1021CAF4A) || defined (CPU_MIMXRT1021CAG4A) CLOCK_SetDiv(kCLOCK_ArmDiv, 0x0); /* Set ARM PODF to 0, divide by 1 */ CLOCK_SetDiv(kCLOCK_AhbDiv, 0x0); /* Set AHB PODF to 0, divide by 1 */ CLOCK_SetDiv(kCLOCK_IpgDiv, 0x2); /* Set IPG PODF to 2, divede by 3 */ CLOCK_SetMux(kCLOCK_PrePeriphMux, 0x2); /* Set PRE_PERIPH_CLK to PLL2_PFD3, 396MHz */ CLOCK_SetMux(kCLOCK_PeriphMux, 0x0); /* Set PERIPH_CLK MUX to PRE_PERIPH_CLK */ #endif /* Disable unused clock */ BOARD_BootClockGate(); /* Power down all unused PLL */ CLOCK_DeinitAudioPll(); /* iomuxc clock (iomuxc_clk_enable): 0x03u */ CLOCK_EnableClock(kCLOCK_Iomuxc); /* Update core clock */ SystemCoreClockUpdate(); } /* MPU configuration. */ static void BOARD_ConfigMPU(void) { /* Disable I cache and D cache */ SCB_DisableICache(); SCB_DisableDCache(); /* Disable MPU */ ARM_MPU_Disable(); /* Region 0 setting */ MPU->RBAR = ARM_MPU_RBAR(0, 0xC0000000U); MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 2, 0, 0, 0, 0, ARM_MPU_REGION_SIZE_512MB); /* Region 1 setting */ 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_1GB); /* Region 2 setting */ // spi flash: normal type, cacheable, no bufferable, no shareable MPU->RBAR = ARM_MPU_RBAR(2, 0x60000000U); MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 0, 0, ARM_MPU_REGION_SIZE_512MB); /* Region 3 setting */ 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 */ 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_128KB); /* Region 5 setting */ MPU->RBAR = ARM_MPU_RBAR(5, 0x20000000U); MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_128KB); /* Region 6 setting */ 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_256KB); #if defined(SDRAM_MPU_INIT) /* Region 7 setting */ MPU->RBAR = ARM_MPU_RBAR(7, 0x80000000U); MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_32MB); /* Region 8 setting */ MPU->RBAR = ARM_MPU_RBAR(8, 0x81E00000U); MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 1, 1, 0, 0, 0, ARM_MPU_REGION_SIZE_2MB); #endif /* Enable MPU */ ARM_MPU_Enable(MPU_CTRL_PRIVDEFENA_Msk); /* Enable I cache and D cache */ SCB_EnableDCache(); SCB_EnableICache(); } /** * This is the timer interrupt service routine. * */ void SysTick_Handler(void) { /* enter interrupt */ rt_interrupt_enter(); rt_tick_increase(); /* leave interrupt */ rt_interrupt_leave(); } void SystemInitHook(void) { BOARD_ConfigMPU(); #if defined(RT_USING_SDRAM) extern int imxrt_sdram_init(void); imxrt_sdram_init(); #endif } /** * This function will initial rt1021 board. */ void rt_hw_board_init() { BOARD_BootClockRUN(); SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND); #ifdef RT_USING_COMPONENTS_INIT rt_components_board_init(); #endif #ifdef RT_USING_CONSOLE rt_console_set_device(RT_CONSOLE_DEVICE_NAME); #endif #ifdef RT_USING_HEAP #if defined(RT_USING_SDRAM) && defined(RT_USING_MEMHEAP_AS_HEAP) rt_kprintf("sdram heap, begin: 0x%p, end: 0x%p\n", SDRAM_BEGIN, SDRAM_END); rt_system_heap_init((void *)SDRAM_BEGIN, (void *)SDRAM_END); rt_kprintf("sram heap, begin: 0x%p, end: 0x%p\n", HEAP_BEGIN, HEAP_END); rt_memheap_init(&system_heap, "sram", (void *)HEAP_BEGIN, HEAP_SIZE); #else rt_kprintf("sram heap, begin: 0x%p, end: 0x%p\n", HEAP_BEGIN, HEAP_END); rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END); #endif #endif } /*@}*/