diff options
Diffstat (limited to 'c/src/lib/libcpu/powerpc/ppc403/console/console.c')
-rw-r--r-- | c/src/lib/libcpu/powerpc/ppc403/console/console.c | 387 |
1 files changed, 0 insertions, 387 deletions
diff --git a/c/src/lib/libcpu/powerpc/ppc403/console/console.c b/c/src/lib/libcpu/powerpc/ppc403/console/console.c deleted file mode 100644 index 7a3b1b425a..0000000000 --- a/c/src/lib/libcpu/powerpc/ppc403/console/console.c +++ /dev/null @@ -1,387 +0,0 @@ -/* - * This file contains the PowerPC 403GA console IO package. - * - * Author: Andrew Bray <andy@i-cubed.co.uk> - * - * COPYRIGHT (c) 1995 by i-cubed ltd. - * - * To anyone who acknowledges that this file is provided "AS IS" - * without any express or implied warranty: - * permission to use, copy, modify, and distribute this file - * for any purpose is hereby granted without fee, provided that - * the above copyright notice and this notice appears in all - * copies, and that the name of i-cubed limited not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * i-cubed limited makes no representations about the suitability - * of this software for any purpose. - * - * Derived from c/src/lib/libbsp/no_cpu/no_bsp/console/console.c: - * - * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. - * On-Line Applications Research Corporation (OAR). - * All rights assigned to U.S. Government, 1994. - * - * This material may be reproduced by or for the U.S. Government pursuant - * to the copyright license under the clause at DFARS 252.227-7013. This - * notice must appear in all copies of this file and its derivatives. - * - * $Id$ - */ - -#define NO_BSP_INIT - -#include <bsp.h> -#include <rtems/libio.h> - -extern rtems_cpu_table Cpu_table; /* owned by BSP */ - -struct async { -/*-----------------------------------------------------------------------------+ -| Line Status Register. -+-----------------------------------------------------------------------------*/ - unsigned char SPLS; - unsigned char SPLSset; -#define LSRDataReady 0x80 -#define LSRFramingError 0x40 -#define LSROverrunError 0x20 -#define LSRParityError 0x10 -#define LSRBreakInterrupt 0x08 -#define LSRTxHoldEmpty 0x04 -#define LSRTxShiftEmpty 0x02 - -/*-----------------------------------------------------------------------------+ -| Handshake Status Register. -+-----------------------------------------------------------------------------*/ - unsigned char SPHS; - unsigned char SPHSset; -#define HSRDsr 0x80 -#define HSRCts 0x40 - -/*-----------------------------------------------------------------------------+ -| Baud rate divisor registers -+-----------------------------------------------------------------------------*/ - unsigned char BRDH; - unsigned char BRDL; - -/*-----------------------------------------------------------------------------+ -| Control Register. -+-----------------------------------------------------------------------------*/ - unsigned char SPCTL; -#define CRNormal 0x00 -#define CRLoopback 0x40 -#define CRAutoEcho 0x80 -#define CRDtr 0x20 -#define CRRts 0x10 -#define CRWordLength7 0x00 -#define CRWordLength8 0x08 -#define CRParityDisable 0x00 -#define CRParityEnable 0x04 -#define CREvenParity 0x00 -#define CROddParity 0x02 -#define CRStopBitsOne 0x00 -#define CRStopBitsTwo 0x01 -#define CRDisableDtrRts 0x00 - -/*-----------------------------------------------------------------------------+ -| Receiver Command Register. -+-----------------------------------------------------------------------------*/ - unsigned char SPRC; -#define RCRDisable 0x00 -#define RCREnable 0x80 -#define RCRIntDisable 0x00 -#define RCRIntEnabled 0x20 -#define RCRDMACh2 0x40 -#define RCRDMACh3 0x60 -#define RCRErrorInt 0x10 -#define RCRPauseEnable 0x08 - -/*-----------------------------------------------------------------------------+ -| Transmitter Command Register. -+-----------------------------------------------------------------------------*/ - unsigned char SPTC; -#define TCRDisable 0x00 -#define TCREnable 0x80 -#define TCRIntDisable 0x00 -#define TCRIntEnabled 0x20 -#define TCRDMACh2 0x40 -#define TCRDMACh3 0x60 -#define TCRTxEmpty 0x10 -#define TCRErrorInt 0x08 -#define TCRStopPause 0x04 -#define TCRBreakGen 0x02 - -/*-----------------------------------------------------------------------------+ -| Miscellanies defines. -+-----------------------------------------------------------------------------*/ - unsigned char SPTB; -#define SPRB SPTB -}; - -#define XOFFchar 0x13 -#define XONchar 0x11 - -typedef volatile struct async *pasync; -static const pasync port = (pasync)0x40000000; - -/* 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; - register unsigned tmp; - - /* Initialise the serial port */ - asm volatile ("mfdcr %0, 0xa0" : "=r" (tmp)); /* IOCR */ - tmp &= ~3; - tmp |= (Cpu_table.serial_external_clock ? 2 : 0) | - (Cpu_table.serial_cts_rts ? 1 : 0); - asm volatile ("mtdcr 0xa0, %0" : "=r" (tmp) : "0" (tmp)); /* IOCR */ - port->SPLS = (LSRDataReady | LSRFramingError | LSROverrunError | - LSRParityError | LSRBreakInterrupt); - tmp = Cpu_table.serial_per_sec / Cpu_table.serial_rate; - tmp = ((tmp + 8) >> 4) - 1; - port->BRDL = tmp & 0x255; - port->BRDH = tmp >> 8; - port->SPCTL = (CRNormal | CRDtr | CRRts | CRWordLength8 | CRParityDisable | - CRStopBitsOne); - port->SPRC = (RCREnable | RCRIntDisable | RCRPauseEnable); - port->SPTC = (TCREnable | TCRIntDisable); - port->SPHS = (HSRDsr | HSRCts); - - 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; -} - - -/* is_character_ready - * - * This routine returns TRUE if a character is available. - * - * Input parameters: NONE - * - * Output parameters: NONE - * - * Return values: - */ - -rtems_boolean is_character_ready( - char *ch -) -{ - unsigned char status; - - if ((status = port->SPLS) & LSRDataReady) - { - *ch = port->SPRB; - return(TRUE); - } - - /* Clean any dodgy status */ - if ((status & (LSRFramingError | LSROverrunError | LSRParityError | - LSRBreakInterrupt)) != 0) - { - port->SPLS = (LSRFramingError | LSROverrunError | LSRParityError | - LSRBreakInterrupt); - } - - return FALSE; -} - -/* inbyte - * - * This routine reads a character from the SOURCE. - * - * Input parameters: NONE - * - * Output parameters: NONE - * - * Return values: - * character read from SOURCE - */ - -char inbyte( void ) -{ - unsigned char status; - - while (1) - { - if ((status = port->SPLS) & LSRDataReady) - break; - - /* Clean any dodgy status */ - if ((status & (LSRFramingError | LSROverrunError | LSRParityError | - LSRBreakInterrupt)) != 0) - { - port->SPLS = (LSRFramingError | LSROverrunError | LSRParityError | - LSRBreakInterrupt); - } - } - - return port->SPRB; -} - -/* outbyte - * - * This routine transmits a character out the SOURCE. It may support - * XON/XOFF flow control. - * - * Input parameters: - * ch - character to be transmitted - * - * Output parameters: NONE - */ - -void outbyte( - char ch -) -{ - unsigned char status; - - while (port->SPHS) - port->SPHS = (HSRDsr | HSRCts); - - while (1) - { - status = port->SPLS; - - if (port->SPHS) - port->SPHS = (HSRDsr | HSRCts); - else if (status & LSRTxHoldEmpty) - break; - } - - if (Cpu_table.serial_xon_xoff) - while (is_character_ready(&status)) - { - if (status == XOFFchar) - do { - while (!is_character_ready(&status)); - } while (status != XONchar); - } - - port->SPTB = 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 ] ); - } - return maximum; -} - -/* - * IO Control entry point - */ - -rtems_device_driver console_control( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg -) -{ - return RTEMS_SUCCESSFUL; -} - |