/* * This file is part of the TREZOR project, https://trezor.io/ * * Copyright (c) SatoshiLabs * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* * This file is part of the Micro Python project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2013, 2014 Damien P. George * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include STM32_HAL_H #include <string.h> #include "sdcard.h" static SD_HandleTypeDef sd_handle; static inline void sdcard_default_pin_state(void) { HAL_GPIO_WritePin(GPIOC, GPIO_PIN_0, GPIO_PIN_SET); // SD_ON/PC0 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_8, GPIO_PIN_RESET); // SD_DAT0/PC8 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_9, GPIO_PIN_RESET); // SD_DAT1/PC9 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_10, GPIO_PIN_RESET); // SD_DAT2/PC10 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_11, GPIO_PIN_RESET); // SD_DAT3/PC11 HAL_GPIO_WritePin(GPIOC, GPIO_PIN_12, GPIO_PIN_RESET); // SD_CLK/PC12 HAL_GPIO_WritePin(GPIOD, GPIO_PIN_2, GPIO_PIN_RESET); // SD_CMD/PD2 GPIO_InitTypeDef GPIO_InitStructure; // configure the SD card circuitry on/off pin GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStructure.Pull = GPIO_NOPULL; GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW; GPIO_InitStructure.Pin = GPIO_PIN_0; HAL_GPIO_Init(GPIOC, &GPIO_InitStructure); // configure SD GPIO GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStructure.Pull = GPIO_NOPULL; GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW; GPIO_InitStructure.Pin = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12; HAL_GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.Pin = GPIO_PIN_2; HAL_GPIO_Init(GPIOD, &GPIO_InitStructure); // configure the SD card detect pin GPIO_InitStructure.Mode = GPIO_MODE_INPUT; GPIO_InitStructure.Pull = GPIO_PULLUP; GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW; GPIO_InitStructure.Pin = GPIO_PIN_13; HAL_GPIO_Init(GPIOC, &GPIO_InitStructure); } static inline void sdcard_active_pin_state(void) { HAL_GPIO_WritePin(GPIOC, GPIO_PIN_0, GPIO_PIN_RESET); // SD_ON/PC0 HAL_Delay(10); // we need to wait until the circuit fully kicks-in GPIO_InitTypeDef GPIO_InitStructure; // configure SD GPIO GPIO_InitStructure.Mode = GPIO_MODE_AF_PP; GPIO_InitStructure.Pull = GPIO_PULLUP; GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStructure.Alternate = GPIO_AF12_SDIO; GPIO_InitStructure.Pin = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12; HAL_GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.Pin = GPIO_PIN_2; HAL_GPIO_Init(GPIOD, &GPIO_InitStructure); } void sdcard_init(void) { sdcard_default_pin_state(); } void HAL_SD_MspInit(SD_HandleTypeDef *hsd) { // enable SDIO clock __HAL_RCC_SDIO_CLK_ENABLE(); // GPIO have already been initialised by sdcard_init } void HAL_SD_MspDeInit(SD_HandleTypeDef *hsd) { __HAL_RCC_SDIO_CLK_DISABLE(); } secbool sdcard_power_on(void) { if (sectrue != sdcard_is_present()) { return secfalse; } if (sd_handle.Instance) { return sectrue; } // turn on SD card circuitry sdcard_active_pin_state(); HAL_Delay(50); // SD device interface configuration sd_handle.Instance = SDIO; sd_handle.Init.ClockEdge = SDIO_CLOCK_EDGE_RISING; sd_handle.Init.ClockBypass = SDIO_CLOCK_BYPASS_DISABLE; sd_handle.Init.ClockPowerSave = SDIO_CLOCK_POWER_SAVE_ENABLE; sd_handle.Init.BusWide = SDIO_BUS_WIDE_1B; sd_handle.Init.HardwareFlowControl = SDIO_HARDWARE_FLOW_CONTROL_DISABLE; sd_handle.Init.ClockDiv = SDIO_TRANSFER_CLK_DIV; // init the SD interface, with retry if it's not ready yet for (int retry = 10; HAL_SD_Init(&sd_handle) != HAL_OK; retry--) { if (retry == 0) { goto error; } HAL_Delay(50); } // configure the SD bus width for wide operation if (HAL_SD_ConfigWideBusOperation(&sd_handle, SDIO_BUS_WIDE_4B) != HAL_OK) { HAL_SD_DeInit(&sd_handle); goto error; } return sectrue; error: sdcard_power_off(); return secfalse; } void sdcard_power_off(void) { if (sd_handle.Instance) { HAL_SD_DeInit(&sd_handle); sd_handle.Instance = NULL; } // turn off SD card circuitry HAL_Delay(50); sdcard_default_pin_state(); HAL_Delay(100); } secbool sdcard_is_present(void) { return sectrue * (GPIO_PIN_RESET == HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_13)); } uint64_t sdcard_get_capacity_in_bytes(void) { if (sd_handle.Instance == NULL) { return 0; } HAL_SD_CardInfoTypeDef cardinfo; HAL_SD_GetCardInfo(&sd_handle, &cardinfo); return (uint64_t)cardinfo.LogBlockNbr * (uint64_t)cardinfo.LogBlockSize; } static HAL_StatusTypeDef sdcard_wait_finished(SD_HandleTypeDef *sd, uint32_t timeout) { // Wait for HAL driver to be ready (eg for DMA to finish) uint32_t start = HAL_GetTick(); while (sd->State == HAL_SD_STATE_BUSY) { if (HAL_GetTick() - start >= timeout) { return HAL_TIMEOUT; } } // Wait for SD card to complete the operation for (;;) { HAL_SD_CardStateTypeDef state = HAL_SD_GetCardState(sd); if (state == HAL_SD_CARD_TRANSFER) { return HAL_OK; } if (!(state == HAL_SD_CARD_SENDING || state == HAL_SD_CARD_RECEIVING || state == HAL_SD_CARD_PROGRAMMING)) { return HAL_ERROR; } if (HAL_GetTick() - start >= timeout) { return HAL_TIMEOUT; } } return HAL_OK; } secbool sdcard_read_blocks(uint32_t *dest, uint32_t block_num, uint32_t num_blocks) { // check that SD card is initialised if (sd_handle.Instance == NULL) { return secfalse; } // check that dest pointer is aligned on a 4-byte boundary if (((uint32_t)dest & 3) != 0) { return secfalse; } HAL_StatusTypeDef err = HAL_OK; err = HAL_SD_ReadBlocks(&sd_handle, (uint8_t *)dest, block_num, num_blocks, 60000); if (err == HAL_OK) { err = sdcard_wait_finished(&sd_handle, 60000); } return sectrue * (err == HAL_OK); } secbool sdcard_write_blocks(const uint32_t *src, uint32_t block_num, uint32_t num_blocks) { // check that SD card is initialised if (sd_handle.Instance == NULL) { return secfalse; } // check that src pointer is aligned on a 4-byte boundary if (((uint32_t)src & 3) != 0) { return secfalse; } HAL_StatusTypeDef err = HAL_OK; err = HAL_SD_WriteBlocks(&sd_handle, (uint8_t *)src, block_num, num_blocks, 60000); if (err == HAL_OK) { err = sdcard_wait_finished(&sd_handle, 60000); } return sectrue * (err == HAL_OK); }