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trezor-firmware/core/embed/trezorhal/sdcard.c
2019-04-15 19:14:40 +02:00

254 lines
8.1 KiB
C

/*
* 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);
}