From 8fd29cfbc5c911c46f065e36389c3d246aa97854 Mon Sep 17 00:00:00 2001
From: Christian Mauderer <christian.mauderer@embedded-brains.de>
Date: Tue, 2 Mar 2021 16:14:41 +0100
Subject: stm32h7: Add init for sdmmc pins

Update #4372
---
 bsps/arm/stm32h7/hal/stm32h7xx_hal_sd.c    |  2 +
 bsps/arm/stm32h7/start/stm32h7-hal-sdmmc.c | 88 ++++++++++++++++++++++++++++++
 spec/build/bsps/arm/stm32h7/bspstm32h7.yml |  1 +
 3 files changed, 91 insertions(+)
 create mode 100644 bsps/arm/stm32h7/start/stm32h7-hal-sdmmc.c

diff --git a/bsps/arm/stm32h7/hal/stm32h7xx_hal_sd.c b/bsps/arm/stm32h7/hal/stm32h7xx_hal_sd.c
index edafb06def..eb8dbe71f1 100644
--- a/bsps/arm/stm32h7/hal/stm32h7xx_hal_sd.c
+++ b/bsps/arm/stm32h7/hal/stm32h7xx_hal_sd.c
@@ -594,6 +594,7 @@ HAL_StatusTypeDef HAL_SD_DeInit(SD_HandleTypeDef *hsd)
 }
 
 
+#ifndef __rtems__
 /**
   * @brief  Initializes the SD MSP.
   * @param  hsd: Pointer to SD handle
@@ -608,6 +609,7 @@ __weak void HAL_SD_MspInit(SD_HandleTypeDef *hsd)
             the HAL_SD_MspInit could be implemented in the user file
    */
 }
+#endif /* __rtems__ */
 
 /**
   * @brief  De-Initialize SD MSP.
diff --git a/bsps/arm/stm32h7/start/stm32h7-hal-sdmmc.c b/bsps/arm/stm32h7/start/stm32h7-hal-sdmmc.c
new file mode 100644
index 0000000000..2bbc4ff953
--- /dev/null
+++ b/bsps/arm/stm32h7/start/stm32h7-hal-sdmmc.c
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/*
+ * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stm32h7/hal.h>
+
+static const stm32h7_gpio_config gpiob = {
+  .regs = GPIOB,
+  .config = {
+    .Pin = GPIO_PIN_8 | GPIO_PIN_9,
+    .Mode = GPIO_MODE_AF_PP,
+    .Pull = GPIO_NOPULL,
+    .Speed = GPIO_SPEED_FREQ_VERY_HIGH,
+    .Alternate = GPIO_AF7_SDMMC1
+  }
+};
+
+static const stm32h7_gpio_config gpioc_af12 = {
+  .regs = GPIOC,
+  .config = {
+    .Pin = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12,
+    .Mode = GPIO_MODE_AF_PP,
+    .Pull = GPIO_NOPULL,
+    .Speed = GPIO_SPEED_FREQ_VERY_HIGH,
+    .Alternate = GPIO_AF12_SDMMC1
+  }
+};
+
+static const stm32h7_gpio_config gpioc_af8 = {
+  .regs = GPIOC,
+  .config = {
+    .Pin = GPIO_PIN_6 | GPIO_PIN_7,
+    .Mode = GPIO_MODE_AF_PP,
+    .Pull = GPIO_NOPULL,
+    .Speed = GPIO_SPEED_FREQ_VERY_HIGH,
+    .Alternate = GPIO_AF8_SDMMC1
+  }
+};
+
+static const stm32h7_gpio_config gpiod = {
+  .regs = GPIOD,
+  .config = {
+    .Pin = GPIO_PIN_2,
+    .Mode = GPIO_MODE_AF_PP,
+    .Pull = GPIO_NOPULL,
+    .Speed = GPIO_SPEED_FREQ_VERY_HIGH,
+    .Alternate = GPIO_AF12_SDMMC1
+  }
+};
+
+void
+HAL_SD_MspInit(SD_HandleTypeDef *hsd)
+{
+  stm32h7_clk_enable(STM32H7_MODULE_SDMMC1);
+  stm32h7_gpio_init(&gpiob);
+  stm32h7_gpio_init(&gpioc_af12);
+  stm32h7_gpio_init(&gpioc_af8);
+  stm32h7_gpio_init(&gpiod);
+  __HAL_RCC_SDMMC1_FORCE_RESET();
+  __HAL_RCC_SDMMC1_RELEASE_RESET();
+}
diff --git a/spec/build/bsps/arm/stm32h7/bspstm32h7.yml b/spec/build/bsps/arm/stm32h7/bspstm32h7.yml
index 80e13472c8..5b3ecc6a89 100644
--- a/spec/build/bsps/arm/stm32h7/bspstm32h7.yml
+++ b/spec/build/bsps/arm/stm32h7/bspstm32h7.yml
@@ -417,6 +417,7 @@ source:
 - bsps/arm/stm32h7/start/stm32h7-config-per.c
 - bsps/arm/stm32h7/start/stm32h7-config-pwr.c
 - bsps/arm/stm32h7/start/stm32h7-hal-eth.c
+- bsps/arm/stm32h7/start/stm32h7-hal-sdmmc.c
 - bsps/arm/stm32h7/start/stm32h7-hal-uart.c
 - bsps/arm/stm32h7/start/stm32h7-hal.c
 - bsps/arm/stm32h7/start/system_stm32h7xx.c
-- 
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