diff options
Diffstat (limited to 'sysdeps/standalone/m68k/m68020/mvme136/console.c')
| -rw-r--r-- | sysdeps/standalone/m68k/m68020/mvme136/console.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/sysdeps/standalone/m68k/m68020/mvme136/console.c b/sysdeps/standalone/m68k/m68020/mvme136/console.c deleted file mode 100644 index 85dee983bf..0000000000 --- a/sysdeps/standalone/m68k/m68020/mvme136/console.c +++ /dev/null @@ -1,101 +0,0 @@ -/* Copyright (C) 1994, 1996 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil), - On-Line Applications Research Corporation. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <standalone.h> -#include "m68020.h" - -/* Console IO routines for a Motorola MVME135/MVME136 board. - -They currently use the B port. It should be possible to -use the A port by filling in the reset of the chip structure, -adding an ifdef for PORTA/PORTB, and switching the addresses, -and maybe the macros based on the macro. */ - -/* M68681 DUART chip register structures and constants */ - -typedef struct { - volatile unsigned char fill1[ 5 ]; /* channel A regs ( not used ) */ - volatile unsigned char isr; /* interrupt status reg */ - volatile unsigned char fill2[ 2 ]; /* counter regs (not used) */ - volatile unsigned char mr1mr2b; /* MR1B and MR2B regs */ - volatile unsigned char srb; /* status reg channel B */ - volatile unsigned char fill3; /* do not access */ - volatile unsigned char rbb; /* receive buffer channel B */ - volatile unsigned char ivr; /* interrupt vector register */ -} r_m681_info; - -typedef struct { - volatile unsigned char fill1[ 4 ]; /* channel A regs (not used) */ - volatile unsigned char acr; /* auxillary control reg */ - volatile unsigned char imr; /* interrupt mask reg */ - volatile unsigned char fill2[ 2 ]; /* counter regs (not used) */ - volatile unsigned char mr1mr2b; /* MR1B and MR2B regs */ - volatile unsigned char csrb; /* clock select reg */ - volatile unsigned char crb; /* command reg */ - volatile unsigned char tbb; /* transmit buffer channel B */ - volatile unsigned char ivr; /* interrupt vector register */ -} w_m681_info; - -#define RD_M68681 ((r_m681_info *)0xfffb0040) /* ptr to the M68681 */ -#define WR_M68681 ((w_m681_info *)0xfffb0040) /* ptr to the M68681 */ -#define RXRDYB 0x01 /* status reg recv ready mask */ -#define TXRDYB 0x04 /* status reg trans ready mask */ - -/* _Console_Putc - -This routine transmits a character out the M68681. It supports -XON/XOFF flow control. */ - -#define XON 0x11 /* control-Q */ -#define XOFF 0x13 /* control-S */ - -int -_Console_Putc (ch) - char ch; -{ - while ( ! (RD_M68681->srb & TXRDYB) ) ; - while ( RD_M68681->srb & RXRDYB ) /* must be an XOFF */ - if ( RD_M68681->rbb == XOFF ) - do { - while ( ! (RD_M68681->srb & RXRDYB) ) ; - } while ( RD_M68681->rbb != XON ); - - WR_M68681->tbb = ch; - return( 0 ); -} - -/* _Console_Getc - -This routine reads a character from the UART and returns it. */ - -int -_Console_Getc (poll) - int poll; -{ - if ( poll ) { - if ( !(RD_M68681->srb & RXRDYB) ) - return -1; - else - return RD_M68681->rbb; - } else { - while ( !(RD_M68681->srb & RXRDYB) ); - return RD_M68681->rbb; - } -} |