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authorRoland McGrath <roland@gnu.org>1994-08-24 22:55:10 +0000
committerRoland McGrath <roland@gnu.org>1994-08-24 22:55:10 +0000
commit56a805307ff1f62e34927bf8853564f3511ea5ee (patch)
tree3f1027eb64d742299b223a27ee7dc549b4d9f545 /sysdeps
parenteed38fbd8df6d912d8297abd3a464f50d553a2c6 (diff)
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Initial revision
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/standalone/m68k/m68020/mvme136/brdinit.c53
-rw-r--r--sysdeps/standalone/m68k/m68020/mvme136/console.c101
2 files changed, 154 insertions, 0 deletions
diff --git a/sysdeps/standalone/m68k/m68020/mvme136/brdinit.c b/sysdeps/standalone/m68k/m68020/mvme136/brdinit.c
new file mode 100644
index 0000000000..55c28d4f89
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/mvme136/brdinit.c
@@ -0,0 +1,53 @@
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+ Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
+ On-Line Applications Research Corporation.
+
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <standalone.h>
+#include "__m68020.h"
+
+/* _Board_Initialize()
+
+This routine initializes the Motorola MVME135/MVME136. */
+
+void
+DEFUN_VOID(_Board_Initialize)
+{
+ mc68020_isr *monitors_vector_table;
+ int index;
+
+ monitors_vector_table = (mc68020_isr *)0; /* 135Bug Vectors are at 0 */
+ set_vbr( monitors_vector_table );
+
+ for ( index=2 ; index<=255 ; index++ )
+ M68Kvec[ index ] = monitors_vector_table[ 32 ];
+
+ M68Kvec[ 2 ] = monitors_vector_table[ 2 ]; /* bus error vector */
+ M68Kvec[ 4 ] = monitors_vector_table[ 4 ]; /* breakpoints vector */
+ M68Kvec[ 9 ] = monitors_vector_table[ 9 ]; /* trace vector */
+ M68Kvec[ 47 ] = monitors_vector_table[ 47 ]; /* system call vector */
+
+ set_vbr( &M68Kvec );
+
+ (*(unsigned char *)0xfffb0067) = 0x7f; /* make VME access round-robin */
+
+ enable_caching();
+
+}
diff --git a/sysdeps/standalone/m68k/m68020/mvme136/console.c b/sysdeps/standalone/m68k/m68020/mvme136/console.c
new file mode 100644
index 0000000000..7c1cd41e7c
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/mvme136/console.c
@@ -0,0 +1,101 @@
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+ Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
+ On-Line Applications Research Corporation.
+
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#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 macroes 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
+DEFUN( _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
+DEFUN( _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;
+ }
+}