arch/all-pc/boot/grub2-aros/include/grub/ns8250.h

   1 /* serial.h - serial device interface */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2000,2001,2002,2005,2007  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef GRUB_NS8250_HEADER
  21 #define GRUB_NS8250_HEADER      1
  22
  23 /* Macros.  */
  24
  25 /* The offsets of UART registers.  */
  26 #define UART_TX         0
  27 #define UART_RX         0
  28 #define UART_DLL        0
  29 #define UART_IER        1
  30 #define UART_DLH        1
  31 #define UART_IIR        2
  32 #define UART_FCR        2
  33 #define UART_LCR        3
  34 #define UART_MCR        4
  35 #define UART_LSR        5
  36 #define UART_MSR        6
  37 #define UART_SR         7
  38
  39 /* For LSR bits.  */
  40 #define UART_DATA_READY         0x01
  41 #define UART_EMPTY_TRANSMITTER  0x20
  42
  43 /* The type of parity.  */
  44 #define UART_NO_PARITY          0x00
  45 #define UART_ODD_PARITY         0x08
  46 #define UART_EVEN_PARITY        0x18
  47
  48 /* The type of word length.  */
  49 #define UART_5BITS_WORD 0x00
  50 #define UART_6BITS_WORD 0x01
  51 #define UART_7BITS_WORD 0x02
  52 #define UART_8BITS_WORD 0x03
  53
  54 /* The type of the length of stop bit.  */
  55 #define UART_1_STOP_BIT         0x00
  56 #define UART_2_STOP_BITS        0x04
  57
  58 /* the switch of DLAB.  */
  59 #define UART_DLAB       0x80
  60
  61 /* Enable the FIFO.  */
  62 #define UART_ENABLE_FIFO_TRIGGER14      0xC7
  63
  64 /* Enable the FIFO.  */
  65 #define UART_ENABLE_FIFO_TRIGGER1       0x07
  66
  67 /* Turn on DTR, RTS, and OUT2.  */
  68 #define UART_ENABLE_DTRRTS      0x03
  69
  70 /* Turn on DTR, RTS, and OUT2.  */
  71 #define UART_ENABLE_OUT2        0x08
  72
  73 #ifndef ASM_FILE
  74 #include <grub/cpu/io.h>
  75
  76 grub_port_t
  77 grub_ns8250_hw_get_port (const unsigned int unit);
  78 #endif
  79
  80 #endif /* ! GRUB_SERIAL_MACHINE_HEADER */