diff options
Diffstat (limited to 'c/src/lib/libbsp/i960/cvme961/console/console.c')
-rw-r--r-- | c/src/lib/libbsp/i960/cvme961/console/console.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/i960/cvme961/console/console.c b/c/src/lib/libbsp/i960/cvme961/console/console.c new file mode 100644 index 0000000000..85aea09c64 --- /dev/null +++ b/c/src/lib/libbsp/i960/cvme961/console/console.c @@ -0,0 +1,212 @@ +/* + * This file contains the CVME961 console IO package. + * + * COPYRIGHT (c) 1989-1997. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may in + * the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#define C961_INIT + +#include <bsp.h> +#include <rtems/libio.h> + +/* console_initialize + * + * This routine initializes the console IO driver. + * + * Input parameters: NONE + * + * Output parameters: NONE + * + * Return values: + */ + +rtems_device_driver console_initialize( + rtems_device_major_number major, + rtems_device_minor_number minor, + void *arg +) +{ + rtems_status_code status; + + status = rtems_io_register_name( + "/dev/console", + major, + (rtems_device_minor_number) 0 + ); + + if (status != RTEMS_SUCCESSFUL) + rtems_fatal_error_occurred(status); + + return RTEMS_SUCCESSFUL; +} + +/* + * NINDY_IO( ... ) + * + * Interface to NINDY. + */ + +#define NINDY_INPUT 0 +#define NINDY_OUTPUT 1 + +void NINDY_IO(); + +void ___NINDY_IO_WRAPPER( void ) /* never called */ +{ + asm volatile ( " .text" ); + asm volatile ( " .align 4" ); + asm volatile ( " .globl _NINDY_IO" ); + asm volatile ( "_NINDY_IO:" ); + asm volatile ( " calls 0 /* call console routines */" ); + asm volatile ( " ret" ); +} + +/* inbyte + * + * This routine reads a character from the console using NINDY. + * + * Input parameters: NONE + * + * Output parameters: NONE + * + * Return values: + * character read from UART + */ + +char inbyte( void ) +{ + char ch; + + NINDY_IO( NINDY_INPUT, &ch ); + return ch; +} + + +/* outbyte + * + * This routine transmits a character out the console using NINDY. + * + * Input parameters: + * ch - character to be transmitted + * + * Output parameters: NONE + */ + +void outbyte( + char ch +) +{ + NINDY_IO( NINDY_OUTPUT, ch ); +} + +/* + * Open entry point + */ + +rtems_device_driver console_open( + rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg +) +{ + return RTEMS_SUCCESSFUL; +} + +/* + * Close entry point + */ + +rtems_device_driver console_close( + rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg +) +{ + return RTEMS_SUCCESSFUL; +} + +/* + * read bytes from the serial port. We only have stdin. + */ + +rtems_device_driver console_read( + rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg +) +{ + rtems_libio_rw_args_t *rw_args; + char *buffer; + int maximum; + int count = 0; + + rw_args = (rtems_libio_rw_args_t *) arg; + + buffer = rw_args->buffer; + maximum = rw_args->count; + + for (count = 0; count < maximum; count++) { + buffer[ count ] = inbyte(); + if (buffer[ count ] == '\n' || buffer[ count ] == '\r') { + buffer[ count++ ] = '\n'; + buffer[ count ] = 0; + break; + } + } + + rw_args->bytes_moved = count; + return (count >= 0) ? RTEMS_SUCCESSFUL : RTEMS_UNSATISFIED; +} + +/* + * write bytes to the serial port. Stdout and stderr are the same. + */ + +rtems_device_driver console_write( + rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg +) +{ + int count; + int maximum; + rtems_libio_rw_args_t *rw_args; + char *buffer; + + rw_args = (rtems_libio_rw_args_t *) arg; + + buffer = rw_args->buffer; + maximum = rw_args->count; + + for (count = 0; count < maximum; count++) { + if ( buffer[ count ] == '\n') { + outbyte('\r'); + } + outbyte( buffer[ count ] ); + } + + rw_args->bytes_moved = maximum; + return 0; +} + +/* + * IO Control entry point + */ + +rtems_device_driver console_control( + rtems_device_major_number major, + rtems_device_minor_number minor, + void * arg +) +{ + return RTEMS_SUCCESSFUL; +} + |