feat(core): support SD card on STM32U5

[no changelog]

core/embed/boardloader/main.c

@@ -117,8 +117,7 @@ struct BoardCapabilities capablities
         .terminator_length = 0};
 
 // we use SRAM as SD card read buffer (because DMA can't access the CCMRAM)
-extern uint32_t sram_start[];
-#define sdcard_buf sram_start
+BUFFER_SECTION uint32_t sdcard_buf[IMAGE_HEADER_SIZE / sizeof(uint32_t)];
 
 #if defined USE_SD_CARD
 static uint32_t check_sdcard(void) {
@@ -208,11 +207,14 @@ static secbool copy_sdcard(void) {
 
   for (int i = 0; i < (IMAGE_HEADER_SIZE + codelen) / SDCARD_BLOCK_SIZE; i++) {
     ensure(sdcard_read_blocks(sdcard_buf, i, 1), NULL);
-    for (int j = 0; j < SDCARD_BLOCK_SIZE / sizeof(uint32_t); j++) {
-      ensure(flash_area_write_word(&BOOTLOADER_AREA,
-                                   i * SDCARD_BLOCK_SIZE + j * sizeof(uint32_t),
-                                   sdcard_buf[j]),
-             NULL);
+    for (int j = 0;
+         j < SDCARD_BLOCK_SIZE / (FLASH_BURST_LENGTH * sizeof(uint32_t)); j++) {
+      ensure(
+          flash_area_write_burst(
+              &BOOTLOADER_AREA,
+              i * SDCARD_BLOCK_SIZE + j * FLASH_BURST_LENGTH * sizeof(uint32_t),
+              &sdcard_buf[j * FLASH_BURST_LENGTH]),
+          NULL);
     }
   }
 

core/embed/trezorhal/boards/trezor_t3t1_v4.h

@@ -7,7 +7,7 @@
 #define VDD_1V8 1
 #define HSE_16MHZ 1
 
-//#define USE_SD_CARD 1
+#define USE_SD_CARD 1
 #define USE_I2C 1
 #define USE_TOUCH 1
 #define USE_SBU 1

core/embed/trezorhal/stm32u5/sdcard.c

@@ -0,0 +1,340 @@
+/*
+ * 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 TREZOR_BOARD
+
+#include <string.h>
+
+#include "irq.h"
+#include "sdcard.h"
+#include "supervise.h"
+
+#define SDMMC_CLK_ENABLE() __HAL_RCC_SDMMC1_CLK_ENABLE()
+#define SDMMC_CLK_DISABLE() __HAL_RCC_SDMMC1_CLK_DISABLE()
+#define SDMMC_IRQn SDMMC1_IRQn
+
+static SD_HandleTypeDef sd_handle = {0};
+
+// this function is inspired by functions in stm32f4xx_ll_sdmmc.c
+uint32_t SDMMC_CmdSetClrCardDetect(SDMMC_TypeDef *SDMMCx, uint32_t Argument) {
+  SDMMC_CmdInitTypeDef sdmmc_cmdinit;
+  uint32_t errorstate = SDMMC_ERROR_NONE;
+
+  sdmmc_cmdinit.Argument = (uint32_t)Argument;
+  sdmmc_cmdinit.CmdIndex = SDMMC_CMD_SD_APP_SET_CLR_CARD_DETECT;
+  sdmmc_cmdinit.Response = SDMMC_RESPONSE_SHORT;
+  sdmmc_cmdinit.WaitForInterrupt = SDMMC_WAIT_NO;
+  sdmmc_cmdinit.CPSM = SDMMC_CPSM_ENABLE;
+  SDMMC_SendCommand(SDMMCx, &sdmmc_cmdinit);
+
+  errorstate = SDMMC_GetCmdResp1(SDMMCx, SDMMC_CMD_SD_APP_SET_CLR_CARD_DETECT,
+                                 SDMMC_CMDTIMEOUT);
+
+  return errorstate;
+}
+
+static inline void sdcard_default_pin_state(void) {
+  HAL_GPIO_WritePin(SD_ENABLE_PORT, SD_ENABLE_PIN, GPIO_PIN_SET);  // SD_ON
+  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 = SD_ENABLE_PIN;
+  HAL_GPIO_Init(SD_ENABLE_PORT, &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 = SD_DETECT_PIN;
+  HAL_GPIO_Init(SD_DETECT_PORT, &GPIO_InitStructure);
+}
+
+static inline void sdcard_active_pin_state(void) {
+  HAL_GPIO_WritePin(SD_ENABLE_PORT, SD_ENABLE_PIN, GPIO_PIN_RESET);
+  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_SDMMC1;
+  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) {
+  if (hsd->Instance == sd_handle.Instance) {
+    // enable SDIO clock
+    SDMMC_CLK_ENABLE();
+
+    // NVIC configuration for SDIO interrupts
+    svc_setpriority(SDMMC_IRQn, IRQ_PRI_SDIO);
+    svc_enableIRQ(SDMMC_IRQn);
+  }
+
+  // GPIO have already been initialised by sdcard_init
+}
+
+void HAL_SD_MspDeInit(SD_HandleTypeDef *hsd) {
+  if (hsd->Instance == sd_handle.Instance) {
+    svc_disableIRQ(SDMMC_IRQn);
+    SDMMC_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 = SDMMC1;
+  sd_handle.Init.ClockEdge = SDMMC_CLOCK_EDGE_RISING;
+  sd_handle.Init.ClockPowerSave = SDMMC_CLOCK_POWER_SAVE_ENABLE;
+  sd_handle.Init.BusWide = SDMMC_BUS_WIDE_1B;
+  sd_handle.Init.HardwareFlowControl = SDMMC_HARDWARE_FLOW_CONTROL_DISABLE;
+  sd_handle.Init.ClockDiv = 0;
+
+  // 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);
+  }
+
+  // disable the card's internal CD/DAT3 card detect pull-up resistor
+  // to send ACMD42, we have to send CMD55 (APP_CMD) with the card's RCA as
+  // the argument followed by CMD42 (SET_CLR_CARD_DETECT)
+  if (SDMMC_CmdAppCommand(sd_handle.Instance, sd_handle.SdCard.RelCardAdd
+                                                  << 16U) != SDMMC_ERROR_NONE) {
+    goto error;
+  }
+  if (SDMMC_CmdSetClrCardDetect(sd_handle.Instance, 0) != SDMMC_ERROR_NONE) {
+    goto error;
+  }
+
+  // configure the SD bus width for wide operation
+  if (HAL_SD_ConfigWideBusOperation(&sd_handle, SDMMC_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(SD_DETECT_PORT, SD_DETECT_PIN));
+}
+
+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;
+}
+
+void SDMMC1_IRQHandler(void) {
+  IRQ_ENTER(SDIO_IRQn);
+  if (sd_handle.Instance) {
+    HAL_SD_IRQHandler(&sd_handle);
+  }
+  IRQ_EXIT(SDIO_IRQn);
+}
+
+static void sdcard_reset_periph(void) {
+  // Fully reset the SDMMC peripheral before calling HAL SD DMA functions.
+  // (There could be an outstanding DTIMEOUT event from a previous call and the
+  // HAL function enables IRQs before fully configuring the SDMMC peripheral.)
+  SDMMC1->DTIMER = 0;
+  SDMMC1->DLEN = 0;
+  SDMMC1->DCTRL = 0;
+  SDMMC1->ICR = SDMMC_STATIC_FLAGS;
+}
+
+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();
+  for (;;) {
+    // Do an atomic check of the state; WFI will exit even if IRQs are disabled
+    uint32_t irq_state = disable_irq();
+    if (sd->State != HAL_SD_STATE_BUSY) {
+      enable_irq(irq_state);
+      break;
+    }
+    __WFI();
+    enable_irq(irq_state);
+    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;
+    }
+    __WFI();
+  }
+  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;
+
+  // we must disable USB irqs to prevent MSC contention with SD card
+  uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS);
+
+  sdcard_reset_periph();
+  err =
+      HAL_SD_ReadBlocks_DMA(&sd_handle, (uint8_t *)dest, block_num, num_blocks);
+  if (err == HAL_OK) {
+    err = sdcard_wait_finished(&sd_handle, 5000);
+  }
+  restore_irq_pri(basepri);
+
+  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;
+
+  // we must disable USB irqs to prevent MSC contention with SD card
+  uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS);
+
+  sdcard_reset_periph();
+  err =
+      HAL_SD_WriteBlocks_DMA(&sd_handle, (uint8_t *)src, block_num, num_blocks);
+  if (err == HAL_OK) {
+    err = sdcard_wait_finished(&sd_handle, 5000);
+  }
+
+  restore_irq_pri(basepri);
+
+  return sectrue * (err == HAL_OK);
+}

core/embed/trezorhal/stm32u5/stm32u5xx_hal_conf.h

@@ -76,7 +76,7 @@ extern "C" {
 #define HAL_RTC_MODULE_ENABLED
 /*#define HAL_SAI_MODULE_ENABLED */
 #define HAL_CRYP_MODULE_ENABLED
-/*#define HAL_SD_MODULE_ENABLED */
+#define HAL_SD_MODULE_ENABLED
 /*#define HAL_MMC_MODULE_ENABLED */
 /*#define HAL_SMARTCARD_MODULE_ENABLED */
 /*#define HAL_SMBUS_MODULE_ENABLED */

core/site_scons/boards/trezor_t3t1_v4.py

@@ -58,14 +58,11 @@ def configure(
         ]
         features_available.append("haptic")
 
-    # if "sd_card" in features_wanted:
-    #     sources += ["embed/trezorhal/stm32u5/sdcard.c"]
-    #     sources += ["embed/extmod/modtrezorio/ff.c"]
-    #     sources += ["embed/extmod/modtrezorio/ffunicode.c"]
-    #     sources += [
-    #         "vendor/stm32cube-u5/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_dma.c"
-    #     ]
-    #     features_available.append("sd_card")
+    if "sd_card" in features_wanted:
+        sources += ["embed/trezorhal/stm32u5/sdcard.c"]
+        sources += ["embed/extmod/modtrezorio/ff.c"]
+        sources += ["embed/extmod/modtrezorio/ffunicode.c"]
+        features_available.append("sd_card")
 
     if "sbu" in features_wanted:
         sources += ["embed/trezorhal/stm32u5/sbu.c"]