kopia lustrzana https://github.com/micropython/micropython
223 wiersze
7.8 KiB
C
223 wiersze
7.8 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2023 Arduino SA
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <string.h>
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#include "py/mphal.h"
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#include "storage.h"
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#include "ulpi.h"
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void NICLAV_board_startup(void) {
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}
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void NICLAV_board_pmic_enable(int);
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void NICLAV_board_early_init(void) {
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HAL_InitTick(0);
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// Enable oscillator pin
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// This is enabled in the bootloader anyway.
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NICLAV_board_osc_enable(true);
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// Re/Enable PMIC rails.
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NICLAV_board_pmic_enable(true);
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#if MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE
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// The Arduino/mbed bootloader uses the MPU to protect sector 1
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// which is used for the flash filesystem. The following code
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// resets and disables all MPU regions configured in the bootloader.
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HAL_MPU_Disable();
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MPU_Region_InitTypeDef MPU_InitStruct;
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MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
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MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
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MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
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MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
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MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
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MPU_InitStruct.SubRegionDisable = 0x00;
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MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
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for (int i = MPU_REGION_NUMBER0; i < MPU_REGION_NUMBER15; i++) {
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MPU_InitStruct.Number = i;
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MPU_InitStruct.Enable = MPU_REGION_DISABLE;
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HAL_MPU_ConfigRegion(&MPU_InitStruct);
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}
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#endif
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#if MICROPY_HW_USB_HS_ULPI3320
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// Make sure UPLI is Not in low-power mode.
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ulpi_leave_low_power();
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#endif
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}
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void NICLAV_board_enter_bootloader(void) {
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RTC_HandleTypeDef RTCHandle;
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RTCHandle.Instance = RTC;
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HAL_RTCEx_BKUPWrite(&RTCHandle, RTC_BKP_DR0, 0xDF59);
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NVIC_SystemReset();
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}
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void NICLAV_board_osc_enable(int enable) {
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mp_hal_pin_config(pyb_pin_OSCEN, MP_HAL_PIN_MODE_OUTPUT, MP_HAL_PIN_PULL_UP, 0);
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mp_hal_pin_config_speed(pyb_pin_OSCEN, MP_HAL_PIN_SPEED_LOW);
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mp_hal_pin_write(pyb_pin_OSCEN, enable);
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}
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void NICLAV_board_pmic_enable(int enable) {
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__HAL_RCC_GPIOF_CLK_ENABLE();
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// Configure PMIC I2C GPIOs
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.Pin = GPIO_PIN_0 | GPIO_PIN_1;
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GPIO_InitStructure.Pull = GPIO_PULLUP;
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GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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GPIO_InitStructure.Mode = GPIO_MODE_AF_OD;
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GPIO_InitStructure.Alternate = GPIO_AF4_I2C2;
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HAL_GPIO_Init(GPIOF, &GPIO_InitStructure);
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// Configure PMIC I2C
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I2C_HandleTypeDef i2c;
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i2c.Instance = I2C2;
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i2c.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
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i2c.Init.Timing = 0x20D09DE7;
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i2c.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED;
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i2c.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED;
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i2c.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED;
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i2c.Init.OwnAddress1 = 0xFE;
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i2c.Init.OwnAddress2 = 0xFE;
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i2c.Init.OwnAddress2Masks = 0;
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__HAL_RCC_I2C2_CLK_ENABLE();
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__HAL_RCC_I2C2_FORCE_RESET();
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__HAL_RCC_I2C2_RELEASE_RESET();
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HAL_I2C_Init(&i2c);
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// LDO1 2V8
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HAL_I2C_Master_Transmit(&i2c, 0x08 << 1, (uint8_t [2]) {0x4D, (enable) ? 0x01 : 0x00}, 2, 1000);
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// LDO2 1V8 CAM
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HAL_I2C_Master_Transmit(&i2c, 0x08 << 1, (uint8_t [2]) {0x50, (enable) ? 0x01 : 0x00}, 2, 1000);
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// LDO3 1V8
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HAL_I2C_Master_Transmit(&i2c, 0x08 << 1, (uint8_t [2]) {0x53, (enable) ? 0x01 : 0x00}, 2, 1000);
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// SW2 VDDIO_EXT
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HAL_I2C_Master_Transmit(&i2c, 0x08 << 1, (uint8_t [2]) {0x3b, (enable) ? 0x81 : 0x80}, 2, 1000);
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// SW3 3V3 (Leaving 3.3 on lowers ULPI current).
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// HAL_I2C_Master_Transmit(&i2c, 0x08<<1, (uint8_t [2]) {0x41, (enable) ? 0x81 : 0x80}, 2, 1000);
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// SW1 1V8 (Main supply is Never turned off)
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// HAL_I2C_Master_Transmit(&i2c, 0x08<<1, (uint8_t [2]) {0x35, (enable) ? 0x81 : 0x80}, 2, 1000);
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HAL_I2C_DeInit(&i2c);
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__HAL_RCC_I2C2_FORCE_RESET();
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__HAL_RCC_I2C2_RELEASE_RESET();
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__HAL_RCC_I2C2_CLK_DISABLE();
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HAL_GPIO_DeInit(GPIOF, GPIO_PIN_0);
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HAL_GPIO_DeInit(GPIOF, GPIO_PIN_1);
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__HAL_RCC_GPIOF_CLK_DISABLE();
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}
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static __attribute__((naked, noreturn)) void cm4_enter_standby(void) {
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// Clear and mask D1 EXTIs.
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EXTI_D1->PR1 = 0x3fffff;
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EXTI_D1->IMR1 &= ~(0xFFFFu); // 16 lines
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// Clear and mask D2 EXTIs.
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EXTI_D2->IMR1 &= ~(0xFFFFu); // 16 lines
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EXTI_D2->PR1 = 0x3fffff;
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EXTI->D3PMR1 = 0;///0x0238FFFFu;
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EXTI->D3PMR2 = 0;///0x003F020Cu;
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EXTI->D3PMR3 = 0;///0x01000000u;
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// Set D2/D2 PDDS bits.
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PWR->CPUCR |= (PWR_CPUCR_PDDS_D2 | PWR_CPUCR_PDDS_D3);
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PWR->CPU2CR |= (PWR_CPU2CR_PDDS_D2 | PWR_CPU2CR_PDDS_D3);
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CLEAR_BIT(PWR->CPU2CR, PWR_CPU2CR_RUN_D3);
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// Set SLEEPDEEP bit.
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SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
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// Enter CPU stop mode.
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__WFI();
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}
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void NICLAV_board_low_power(int mode) {
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switch (mode) {
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case 0: // Leave stop mode.
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ulpi_leave_low_power();
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break;
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case 1: // Enter stop mode.
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ulpi_enter_low_power();
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break;
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case 2: // Enter standby mode.
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ulpi_enter_low_power();
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break;
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}
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#if (MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE == 0)
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// Enable QSPI deepsleep for modes 1 and 2
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mp_spiflash_deepsleep(&spi_bdev.spiflash, (mode != 0));
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#endif
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if (mode == 2) {
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if (RCC->GCR & RCC_GCR_BOOT_C2) {
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// If CM4 is booted, it should be running a firmware
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// that supports low-power mode entry via HSEM.
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__HAL_RCC_HSEM_CLK_ENABLE();
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HAL_HSEM_FastTake(0);
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HAL_HSEM_Release(0, 0);
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} else {
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// If CM4 is not booted, rig an ISR vector, with a reset
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// handler that points to standby function and boot it.
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volatile extern char _cm4_ram_start[1024];
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uint32_t *cm4_ram = (uint32_t *)_cm4_ram_start;
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cm4_ram[0] = (uint32_t)(_cm4_ram_start + 1024);
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cm4_ram[1] = ((uint32_t)&cm4_enter_standby) | 1;
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SCB_CleanDCache_by_Addr((uint32_t *)_cm4_ram_start, 8);
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HAL_PWREx_HoldCore(PWR_CORE_CPU2);
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HAL_SYSCFG_CM4BootAddConfig(SYSCFG_BOOT_ADDR0, (uint32_t)_cm4_ram_start);
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HAL_RCCEx_EnableBootCore(RCC_BOOT_C2);
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}
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// Wait for the CM4 to enter stop mode.
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HAL_Delay(100);
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// Disable all power rails, except core voltage.
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NICLAV_board_pmic_enable(false);
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// Reset all buses, peripherals, GPIO clocks etc..
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RCC->AHB1RSTR = 0x0A00C023U;
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RCC->AHB2RSTR = 0x00000271U;
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RCC->AHB3RSTR = 0x00015031U;
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RCC->AHB4RSTR = 0x0328077FU; // LSE GPIO port is masked.
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RCC->APB1LRSTR = 0xE8FFC3FFU;
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RCC->APB1HRSTR = 0x00000136U;
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RCC->APB2RSTR = 0x31D73033U;
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RCC->APB3RSTR = 0x00000018U;
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RCC->APB4RSTR = 0x0020DEAAU;
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}
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}
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