| /* |
| * Copyright (c) 2017,2018, NXP |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <kernel.h> |
| #include <device.h> |
| #include <init.h> |
| #include <soc.h> |
| #include <linker/sections.h> |
| #include <fsl_clock.h> |
| #include <arch/cpu.h> |
| #include <cortex_m/exc.h> |
| #include <fsl_flexspi_nor_boot.h> |
| |
| #ifdef CONFIG_INIT_ARM_PLL |
| /* ARM PLL configuration for RUN mode */ |
| const clock_arm_pll_config_t armPllConfig = { |
| .loopDivider = 100U |
| }; |
| #endif |
| |
| #ifdef CONFIG_INIT_SYS_PLL |
| /* SYS PLL configuration for RUN mode */ |
| const clock_sys_pll_config_t sysPllConfig = { |
| .loopDivider = 1U |
| }; |
| #endif |
| |
| #ifdef CONFIG_INIT_USB1_PLL |
| /* USB1 PLL configuration for RUN mode */ |
| const clock_usb_pll_config_t usb1PllConfig = { |
| .loopDivider = 0U |
| }; |
| #endif |
| |
| #ifdef CONFIG_INIT_ENET_PLL |
| /* ENET PLL configuration for RUN mode */ |
| const clock_enet_pll_config_t ethPllConfig = { |
| #ifdef CONFIG_SOC_MIMXRT1021 |
| .enableClkOutput500M = true, |
| #endif |
| #ifdef CONFIG_ETH_MCUX |
| .enableClkOutput = true, |
| #endif |
| .enableClkOutput25M = false, |
| .loopDivider = 1, |
| }; |
| #endif |
| |
| #ifdef CONFIG_INIT_VIDEO_PLL |
| const clock_video_pll_config_t videoPllConfig = { |
| .loopDivider = 31, |
| .postDivider = 8, |
| .numerator = 0, |
| .denominator = 0, |
| }; |
| #endif |
| |
| #ifdef CONFIG_NXP_IMX_RT_BOOT_HEADER |
| const __imx_boot_data_section BOOT_DATA_T boot_data = { |
| .start = CONFIG_FLASH_BASE_ADDRESS, |
| .size = CONFIG_FLASH_SIZE, |
| .plugin = PLUGIN_FLAG, |
| .placeholder = 0xFFFFFFFF, |
| }; |
| |
| const __imx_boot_ivt_section ivt image_vector_table = { |
| .hdr = IVT_HEADER, |
| .entry = CONFIG_FLASH_BASE_ADDRESS + CONFIG_TEXT_SECTION_OFFSET, |
| .reserved1 = IVT_RSVD, |
| #ifdef CONFIG_DEVICE_CONFIGURATION_DATA |
| .dcd = (uint32_t) dcd_data, |
| #else |
| .dcd = (uint32_t) NULL, |
| #endif |
| .boot_data = (uint32_t) &boot_data, |
| .self = (uint32_t) &image_vector_table, |
| .csf = (uint32_t)CSF_ADDRESS, |
| .reserved2 = IVT_RSVD, |
| }; |
| #endif |
| |
| /** |
| * |
| * @brief Initialize the system clock |
| * |
| * @return N/A |
| * |
| */ |
| static ALWAYS_INLINE void clkInit(void) |
| { |
| /* Boot ROM did initialize the XTAL, here we only sets external XTAL |
| * OSC freq |
| */ |
| CLOCK_SetXtalFreq(24000000U); |
| CLOCK_SetRtcXtalFreq(32768U); |
| |
| /* Set PERIPH_CLK2 MUX to OSC */ |
| CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 0x1); |
| |
| /* Set PERIPH_CLK MUX to PERIPH_CLK2 */ |
| CLOCK_SetMux(kCLOCK_PeriphMux, 0x1); |
| |
| /* Setting the VDD_SOC to 1.5V. It is necessary to config AHB to 600Mhz |
| */ |
| DCDC->REG3 = (DCDC->REG3 & (~DCDC_REG3_TRG_MASK)) | DCDC_REG3_TRG(0x12); |
| /* Waiting for DCDC_STS_DC_OK bit is asserted */ |
| while (DCDC_REG0_STS_DC_OK_MASK != |
| (DCDC_REG0_STS_DC_OK_MASK & DCDC->REG0)) { |
| ; |
| } |
| |
| #ifdef CONFIG_INIT_ARM_PLL |
| CLOCK_InitArmPll(&armPllConfig); /* Configure ARM PLL to 1200M */ |
| #endif |
| #ifdef CONFIG_INIT_SYS_PLL |
| CLOCK_InitSysPll(&sysPllConfig); /* Configure SYS PLL to 528M */ |
| #endif |
| #ifdef CONFIG_INIT_USB1_PLL |
| CLOCK_InitUsb1Pll(&usb1PllConfig); /* Configure USB1 PLL to 480M */ |
| #endif |
| #ifdef CONFIG_INIT_ENET_PLL |
| CLOCK_InitEnetPll(ðPllConfig); |
| #endif |
| #ifdef CONFIG_INIT_VIDEO_PLL |
| CLOCK_InitVideoPll(&videoPllConfig); |
| #endif |
| |
| CLOCK_SetDiv(kCLOCK_ArmDiv, CONFIG_ARM_DIV); /* Set ARM PODF */ |
| CLOCK_SetDiv(kCLOCK_AhbDiv, CONFIG_AHB_DIV); /* Set AHB PODF */ |
| CLOCK_SetDiv(kCLOCK_IpgDiv, CONFIG_IPG_DIV); /* Set IPG PODF */ |
| |
| /* Set PRE_PERIPH_CLK to PLL1, 1200M */ |
| CLOCK_SetMux(kCLOCK_PrePeriphMux, 0x3); |
| |
| /* Set PERIPH_CLK MUX to PRE_PERIPH_CLK */ |
| CLOCK_SetMux(kCLOCK_PeriphMux, 0x0); |
| |
| #ifdef CONFIG_UART_MCUX_LPUART |
| /* Configure UART divider to default */ |
| CLOCK_SetMux(kCLOCK_UartMux, 0); /* Set UART source to PLL3 80M */ |
| CLOCK_SetDiv(kCLOCK_UartDiv, 0); /* Set UART divider to 1 */ |
| #endif |
| |
| #ifdef CONFIG_I2C_MCUX_LPI2C |
| CLOCK_SetMux(kCLOCK_Lpi2cMux, 0); /* Set I2C source as USB1 PLL 480M */ |
| CLOCK_SetDiv(kCLOCK_Lpi2cDiv, 5); /* Set I2C divider to 6 */ |
| #endif |
| |
| #ifdef CONFIG_SPI_MCUX_LPSPI |
| CLOCK_SetMux(kCLOCK_LpspiMux, 1); /* Set SPI source to USB1 PFD0 720M */ |
| CLOCK_SetDiv(kCLOCK_LpspiDiv, 7); /* Set SPI divider to 8 */ |
| #endif |
| |
| #ifdef CONFIG_DISPLAY_MCUX_ELCDIF |
| CLOCK_SetMux(kCLOCK_LcdifPreMux, 2); |
| CLOCK_SetDiv(kCLOCK_LcdifPreDiv, 4); |
| CLOCK_SetDiv(kCLOCK_LcdifDiv, 1); |
| #endif |
| |
| /* Keep the system clock running so SYSTICK can wake up the system from |
| * wfi. |
| */ |
| CLOCK_SetMode(kCLOCK_ModeRun); |
| |
| } |
| |
| /** |
| * |
| * @brief Perform basic hardware initialization |
| * |
| * Initialize the interrupt controller device drivers. |
| * Also initialize the timer device driver, if required. |
| * |
| * @return 0 |
| */ |
| |
| static int imxrt_init(struct device *arg) |
| { |
| ARG_UNUSED(arg); |
| |
| unsigned int oldLevel; /* old interrupt lock level */ |
| |
| /* disable interrupts */ |
| oldLevel = irq_lock(); |
| |
| /* Watchdog disable */ |
| if ((WDOG1->WCR & WDOG_WCR_WDE_MASK) != 0) { |
| WDOG1->WCR &= ~WDOG_WCR_WDE_MASK; |
| } |
| |
| if ((WDOG2->WCR & WDOG_WCR_WDE_MASK) != 0) { |
| WDOG2->WCR &= ~WDOG_WCR_WDE_MASK; |
| } |
| |
| RTWDOG->CNT = 0xD928C520U; /* 0xD928C520U is the update key */ |
| RTWDOG->TOVAL = 0xFFFF; |
| RTWDOG->CS = (uint32_t) ((RTWDOG->CS) & ~RTWDOG_CS_EN_MASK) |
| | RTWDOG_CS_UPDATE_MASK; |
| |
| /* Disable Systick which might be enabled by bootrom */ |
| if ((SysTick->CTRL & SysTick_CTRL_ENABLE_Msk) != 0) { |
| SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk; |
| } |
| |
| SCB_EnableICache(); |
| if ((SCB->CCR & SCB_CCR_DC_Msk) == 0) { |
| SCB_EnableDCache(); |
| } |
| |
| _ClearFaults(); |
| |
| /* Initialize system clock */ |
| clkInit(); |
| |
| /* |
| * install default handler that simply resets the CPU |
| * if configured in the kernel, NOP otherwise |
| */ |
| NMI_INIT(); |
| |
| /* restore interrupt state */ |
| irq_unlock(oldLevel); |
| return 0; |
| } |
| |
| SYS_INIT(imxrt_init, PRE_KERNEL_1, 0); |