127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
|
/*
|
||
|
|
* 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 <stdint.h>
|
||
|
|
#include <rthw.h>
|
||
|
|
#include <rtthread.h>
|
||
|
|
|
||
|
|
#include "board.h"
|
||
|
|
#include "usart.h"
|
||
|
|
|
||
|
|
/* ARM PLL configuration for RUN mode */
|
||
|
|
const clock_arm_pll_config_t armPllConfig = { .loopDivider = 100U };
|
||
|
|
|
||
|
|
/* 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 1.5V. It is necessary to config AHB to 600Mhz */
|
||
|
|
DCDC->REG3 = (DCDC->REG3 & (~DCDC_REG3_TRG_MASK)) | DCDC_REG3_TRG(0x12);
|
||
|
|
|
||
|
|
CLOCK_InitArmPll(&armPllConfig); /* Configure ARM PLL to 1200M */
|
||
|
|
#ifndef SKIP_SYSCLK_INIT
|
||
|
|
CLOCK_InitSysPll(&sysPllConfig); /* Configure SYS PLL to 528M */
|
||
|
|
#endif
|
||
|
|
#ifndef SKIP_USB_PLL_INIT
|
||
|
|
CLOCK_InitUsb1Pll(&usb1PllConfig); /* Configure USB1 PLL to 480M */
|
||
|
|
#endif
|
||
|
|
CLOCK_SetDiv(kCLOCK_ArmDiv, 0x1); /* 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 PLL1, 1200M */
|
||
|
|
CLOCK_SetMux(kCLOCK_PeriphMux, 0x0); /* Set PERIPH_CLK MUX to PRE_PERIPH_CLK */
|
||
|
|
|
||
|
|
/* Disable unused clock */
|
||
|
|
BOARD_BootClockGate();
|
||
|
|
|
||
|
|
/* Power down all unused PLL */
|
||
|
|
CLOCK_DeinitAudioPll();
|
||
|
|
CLOCK_DeinitVideoPll();
|
||
|
|
CLOCK_DeinitEnetPll();
|
||
|
|
CLOCK_DeinitUsb2Pll();
|
||
|
|
|
||
|
|
/* 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 */
|
||
|
|
|
||
|
|
/* Update core clock */
|
||
|
|
SystemCoreClockUpdate();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is the timer interrupt service routine.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
void SysTick_Handler(void)
|
||
|
|
{
|
||
|
|
/* enter interrupt */
|
||
|
|
rt_interrupt_enter();
|
||
|
|
|
||
|
|
rt_tick_increase();
|
||
|
|
|
||
|
|
/* leave interrupt */
|
||
|
|
rt_interrupt_leave();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This function will initial LPC8XX board.
|
||
|
|
*/
|
||
|
|
void rt_hw_board_init()
|
||
|
|
{
|
||
|
|
BOARD_BootClockRUN();
|
||
|
|
|
||
|
|
SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
|
||
|
|
|
||
|
|
extern int imxrt_hw_usart_init(void);
|
||
|
|
imxrt_hw_usart_init();
|
||
|
|
|
||
|
|
#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
|
||
|
|
rt_system_heap_init((void*)HEAP_BEGIN, (void*)HEAP_END);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
/*@}*/
|