include/grlib/apbuart.h

   1 /* GRLIB APBUART definitions
   2  *
   3  * (C) Copyright 2010, 2015
   4  * Daniel Hellstrom, Cobham Gaisler, daniel@gaisler.com
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #ifndef __GRLIB_APBUART_H__
  10 #define __GRLIB_APBUART_H__
  11
  12 /* APBUART Register map */
  13 typedef struct {
  14         volatile unsigned int data;
  15         volatile unsigned int status;
  16         volatile unsigned int ctrl;
  17         volatile unsigned int scaler;
  18 } ambapp_dev_apbuart;
  19
  20 /*
  21  *  The following defines the bits in the LEON UART Status Registers.
  22  */
  23
  24 #define APBUART_STATUS_DR   0x00000001  /* Data Ready */
  25 #define APBUART_STATUS_TSE  0x00000002  /* TX Send Register Empty */
  26 #define APBUART_STATUS_THE  0x00000004  /* TX Hold Register Empty */
  27 #define APBUART_STATUS_BR   0x00000008  /* Break Error */
  28 #define APBUART_STATUS_OE   0x00000010  /* RX Overrun Error */
  29 #define APBUART_STATUS_PE   0x00000020  /* RX Parity Error */
  30 #define APBUART_STATUS_FE   0x00000040  /* RX Framing Error */
  31 #define APBUART_STATUS_ERR  0x00000078  /* Error Mask */
  32
  33 /*
  34  *  The following defines the bits in the LEON UART Ctrl Registers.
  35  */
  36
  37 #define APBUART_CTRL_RE     0x00000001  /* Receiver enable */
  38 #define APBUART_CTRL_TE     0x00000002  /* Transmitter enable */
  39 #define APBUART_CTRL_RI     0x00000004  /* Receiver interrupt enable */
  40 #define APBUART_CTRL_TI     0x00000008  /* Transmitter interrupt enable */
  41 #define APBUART_CTRL_PS     0x00000010  /* Parity select */
  42 #define APBUART_CTRL_PE     0x00000020  /* Parity enable */
  43 #define APBUART_CTRL_FL     0x00000040  /* Flow control enable */
  44 #define APBUART_CTRL_LB     0x00000080  /* Loop Back enable */
  45 #define APBUART_CTRL_DBG    (1<<11)     /* Debug Bit used by GRMON */
  46
  47 #endif