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diff --git a/bsps/include/grlib/apbuart-regs.h b/bsps/include/grlib/apbuart-regs.h
new file mode 100644
index 0000000000..c3ea2d0f8e
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+++ b/bsps/include/grlib/apbuart-regs.h
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+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSDeviceGRLIBAPBUART
+ *
+ * @brief This header file defines the APBUART register block interface.
+ */
+
+/*
+ * Copyright (C) 2021 embedded brains GmbH & Co. KG
+ *
+ * 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.
+ */
+
+/*
+ * This file is part of the RTEMS quality process and was automatically
+ * generated.  If you find something that needs to be fixed or
+ * worded better please post a report or patch to an RTEMS mailing list
+ * or raise a bug report:
+ *
+ * https://www.rtems.org/bugs.html
+ *
+ * For information on updating and regenerating please refer to the How-To
+ * section in the Software Requirements Engineering chapter of the
+ * RTEMS Software Engineering manual.  The manual is provided as a part of
+ * a release.  For development sources please refer to the online
+ * documentation at:
+ *
+ * https://docs.rtems.org
+ */
+
+/* Generated from spec:/dev/grlib/if/apbuart-header */
+
+#ifndef _GRLIB_APBUART_REGS_H
+#define _GRLIB_APBUART_REGS_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Generated from spec:/dev/grlib/if/apbuart */
+
+/**
+ * @defgroup RTEMSDeviceGRLIBAPBUART APBUART
+ *
+ * @ingroup RTEMSDeviceGRLIB
+ *
+ * @brief This group contains the APBUART interfaces.
+ *
+ * @{
+ */
+
+/**
+ * @defgroup RTEMSDeviceGRLIBAPBUARTDATA UART data register (DATA)
+ *
+ * @brief This group contains register bit definitions.
+ *
+ * @{
+ */
+
+#define APBUART_DATA_DATA_SHIFT 0
+#define APBUART_DATA_DATA_MASK 0xffU
+#define APBUART_DATA_DATA_GET( _reg ) \
+  ( ( ( _reg ) & APBUART_DATA_DATA_MASK ) >> \
+    APBUART_DATA_DATA_SHIFT )
+#define APBUART_DATA_DATA_SET( _reg, _val ) \
+  ( ( ( _reg ) & ~APBUART_DATA_DATA_MASK ) | \
+    ( ( ( _val ) << APBUART_DATA_DATA_SHIFT ) & \
+      APBUART_DATA_DATA_MASK ) )
+#define APBUART_DATA_DATA( _val ) \
+  ( ( ( _val ) << APBUART_DATA_DATA_SHIFT ) & \
+    APBUART_DATA_DATA_MASK )
+
+/** @} */
+
+/**
+ * @defgroup RTEMSDeviceGRLIBAPBUARTSTATUS UART status register (STATUS)
+ *
+ * @brief This group contains register bit definitions.
+ *
+ * @{
+ */
+
+#define APBUART_STATUS_RCNT_SHIFT 26
+#define APBUART_STATUS_RCNT_MASK 0xfc000000U
+#define APBUART_STATUS_RCNT_GET( _reg ) \
+  ( ( ( _reg ) & APBUART_STATUS_RCNT_MASK ) >> \
+    APBUART_STATUS_RCNT_SHIFT )
+#define APBUART_STATUS_RCNT_SET( _reg, _val ) \
+  ( ( ( _reg ) & ~APBUART_STATUS_RCNT_MASK ) | \
+    ( ( ( _val ) << APBUART_STATUS_RCNT_SHIFT ) & \
+      APBUART_STATUS_RCNT_MASK ) )
+#define APBUART_STATUS_RCNT( _val ) \
+  ( ( ( _val ) << APBUART_STATUS_RCNT_SHIFT ) & \
+    APBUART_STATUS_RCNT_MASK )
+
+#define APBUART_STATUS_TCNT_SHIFT 20
+#define APBUART_STATUS_TCNT_MASK 0x3f00000U
+#define APBUART_STATUS_TCNT_GET( _reg ) \
+  ( ( ( _reg ) & APBUART_STATUS_TCNT_MASK ) >> \
+    APBUART_STATUS_TCNT_SHIFT )
+#define APBUART_STATUS_TCNT_SET( _reg, _val ) \
+  ( ( ( _reg ) & ~APBUART_STATUS_TCNT_MASK ) | \
+    ( ( ( _val ) << APBUART_STATUS_TCNT_SHIFT ) & \
+      APBUART_STATUS_TCNT_MASK ) )
+#define APBUART_STATUS_TCNT( _val ) \
+  ( ( ( _val ) << APBUART_STATUS_TCNT_SHIFT ) & \
+    APBUART_STATUS_TCNT_MASK )
+
+#define APBUART_STATUS_RF 0x400U
+
+#define APBUART_STATUS_TF 0x200U
+
+#define APBUART_STATUS_RH 0x100U
+
+#define APBUART_STATUS_TH 0x80U
+
+#define APBUART_STATUS_FE 0x40U
+
+#define APBUART_STATUS_PE 0x20U
+
+#define APBUART_STATUS_OV 0x10U
+
+#define APBUART_STATUS_BR 0x8U
+
+#define APBUART_STATUS_TE 0x4U
+
+#define APBUART_STATUS_TS 0x2U
+
+#define APBUART_STATUS_DR 0x1U
+
+/** @} */
+
+/**
+ * @defgroup RTEMSDeviceGRLIBAPBUARTCTRL UART control register (CTRL)
+ *
+ * @brief This group contains register bit definitions.
+ *
+ * @{
+ */
+
+#define APBUART_CTRL_FA 0x80000000U
+
+#define APBUART_CTRL_SI 0x4000U
+
+#define APBUART_CTRL_DI 0x2000U
+
+#define APBUART_CTRL_BI 0x1000U
+
+#define APBUART_CTRL_DB 0x800U
+
+#define APBUART_CTRL_RF 0x400U
+
+#define APBUART_CTRL_TF 0x200U
+
+#define APBUART_CTRL_EC 0x100U
+
+#define APBUART_CTRL_LB 0x80U
+
+#define APBUART_CTRL_FL 0x40U
+
+#define APBUART_CTRL_PE 0x20U
+
+#define APBUART_CTRL_PS 0x10U
+
+#define APBUART_CTRL_TI 0x8U
+
+#define APBUART_CTRL_RI 0x4U
+
+#define APBUART_CTRL_TE 0x2U
+
+#define APBUART_CTRL_RE 0x1U
+
+/** @} */
+
+/**
+ * @defgroup RTEMSDeviceGRLIBAPBUARTSCALER UART scaler reload register (SCALER)
+ *
+ * @brief This group contains register bit definitions.
+ *
+ * @{
+ */
+
+#define APBUART_SCALER_SCALER_RELOAD_VALUE_SHIFT 0
+#define APBUART_SCALER_SCALER_RELOAD_VALUE_MASK 0xfffffU
+#define APBUART_SCALER_SCALER_RELOAD_VALUE_GET( _reg ) \
+  ( ( ( _reg ) & APBUART_SCALER_SCALER_RELOAD_VALUE_MASK ) >> \
+    APBUART_SCALER_SCALER_RELOAD_VALUE_SHIFT )
+#define APBUART_SCALER_SCALER_RELOAD_VALUE_SET( _reg, _val ) \
+  ( ( ( _reg ) & ~APBUART_SCALER_SCALER_RELOAD_VALUE_MASK ) | \
+    ( ( ( _val ) << APBUART_SCALER_SCALER_RELOAD_VALUE_SHIFT ) & \
+      APBUART_SCALER_SCALER_RELOAD_VALUE_MASK ) )
+#define APBUART_SCALER_SCALER_RELOAD_VALUE( _val ) \
+  ( ( ( _val ) << APBUART_SCALER_SCALER_RELOAD_VALUE_SHIFT ) & \
+    APBUART_SCALER_SCALER_RELOAD_VALUE_MASK )
+
+/** @} */
+
+/**
+ * @defgroup RTEMSDeviceGRLIBAPBUARTFIFO UART FIFO debug register (FIFO)
+ *
+ * @brief This group contains register bit definitions.
+ *
+ * @{
+ */
+
+#define APBUART_FIFO_DATA_SHIFT 0
+#define APBUART_FIFO_DATA_MASK 0xffU
+#define APBUART_FIFO_DATA_GET( _reg ) \
+  ( ( ( _reg ) & APBUART_FIFO_DATA_MASK ) >> \
+    APBUART_FIFO_DATA_SHIFT )
+#define APBUART_FIFO_DATA_SET( _reg, _val ) \
+  ( ( ( _reg ) & ~APBUART_FIFO_DATA_MASK ) | \
+    ( ( ( _val ) << APBUART_FIFO_DATA_SHIFT ) & \
+      APBUART_FIFO_DATA_MASK ) )
+#define APBUART_FIFO_DATA( _val ) \
+  ( ( ( _val ) << APBUART_FIFO_DATA_SHIFT ) & \
+    APBUART_FIFO_DATA_MASK )
+
+/** @} */
+
+/**
+ * @brief This structure defines the APBUART register block memory map.
+ */
+typedef struct apbuart {
+  /**
+   * @brief See @ref RTEMSDeviceGRLIBAPBUARTDATA.
+   */
+  uint32_t data;
+
+  /**
+   * @brief See @ref RTEMSDeviceGRLIBAPBUARTSTATUS.
+   */
+  uint32_t status;
+
+  /**
+   * @brief See @ref RTEMSDeviceGRLIBAPBUARTCTRL.
+   */
+  uint32_t ctrl;
+
+  /**
+   * @brief See @ref RTEMSDeviceGRLIBAPBUARTSCALER.
+   */
+  uint32_t scaler;
+
+  /**
+   * @brief See @ref RTEMSDeviceGRLIBAPBUARTFIFO.
+   */
+  uint32_t fifo;
+} apbuart;
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _GRLIB_APBUART_REGS_H */