summaryrefslogtreecommitdiffstats
path: root/c/src/lib/libcpu/powerpc/ppc403/console/console.c
diff options
context:
space:
mode:
Diffstat (limited to 'c/src/lib/libcpu/powerpc/ppc403/console/console.c')
-rw-r--r--c/src/lib/libcpu/powerpc/ppc403/console/console.c541
1 files changed, 0 insertions, 541 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 0e0bbd7fef..0000000000
--- a/c/src/lib/libcpu/powerpc/ppc403/console/console.c
+++ /dev/null
@@ -1,541 +0,0 @@
-/*
- * This file contains the PowerPC 403GA console IO package.
- *
- * Author: Thomas Doerfler <td@imd.m.isar.de>
- * IMD Ingenieurbuero fuer Microcomputertechnik
- *
- * COPYRIGHT (c) 1998 by IMD
- *
- * Changes from IMD are covered by the original distributions terms.
- * changes include interrupt support and termios support
- * for backward compatibility, the original polled driver has been
- * renamed to console.c.polled
- *
- * This file has been initially created (polled version) by
- *
- * 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.
- *
- * Modifications for spooling (interrupt driven) console driver
- * by Thomas Doerfler <td@imd.m.isar.de>
- * for these modifications:
- * COPYRIGHT (c) 1997 by IMD, Puchheim, Germany.
- *
- * 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. IMD 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).
- */
-
-#define NO_BSP_INIT
-
-#include <rtems.h>
-#include <rtems/libio.h>
-#include "../irq/ictrl.h"
-#include <stdlib.h> /* for atexit() */
-
-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
-};
-
-typedef volatile struct async *pasync;
-static const pasync port = (pasync)0x40000000;
-
-static void *spittyp; /* handle for termios */
-int ppc403_spi_interrupt = 1; /* use interrupts... */
-
-/*
- * Rx Interrupt handler
- */
-static rtems_isr
-spiRxInterruptHandler (rtems_vector_number v)
-{
- char ch;
-
- /* clear any receive errors (errors are ignored now) */
- port->SPLS = (LSRFramingError | LSROverrunError |
- LSRParityError | LSRBreakInterrupt);
- /*
- * Buffer received?
- */
- if (port->SPLS & LSRDataReady) {
- ch = port->SPRB; /* read receive buffer */
- rtems_termios_enqueue_raw_characters (spittyp,&ch,1);
- }
-}
-
-/*
- * Tx Interrupt handler
- */
-static rtems_isr
-spiTxInterruptHandler (rtems_vector_number v)
-{
- /*
- * char transmitted?
- */
- if (0 != (port->SPLS & LSRTxHoldEmpty)) { /* must always be true!! */
- port->SPTC &= ~TCRIntEnabled; /* stop irqs for now... */
- /* and call termios... */
- rtems_termios_dequeue_characters (spittyp,1);
- }
-}
-
-/*
- * enable/disable RTS line to start/stop remote transmitter
- */
-static int
-spiStartRemoteTx (int minor)
-{
- rtems_interrupt_level level;
-
- rtems_interrupt_disable (level);
- port->SPCTL |= CRRts; /* activate RTS */
- rtems_interrupt_enable (level);
- return 0;
-}
-
-static int
-spiStopRemoteTx (int minor)
-{
- rtems_interrupt_level level;
-
- rtems_interrupt_disable (level);
- port->SPCTL &= ~CRRts; /* deactivate RTS */
- rtems_interrupt_enable (level);
- return 0;
-}
-
-void
-spiBaudSet(uint32_t baudrate)
-{
- uint32_t tmp;
- extern uint32_t bsp_serial_per_sec;
- tmp = bsp_serial_per_sec / baudrate;
- tmp = ((tmp) >> 4) - 1;
- port->BRDL = tmp & 0xff;
- port->BRDH = tmp >> 8;
-
-}
-/*
- * Hardware-dependent portion of tcsetattr().
- */
-static int
-spiSetAttributes (int minor, const struct termios *t)
-{
- int baud;
-
- /* FIXME: check c_cflag & CRTSCTS for hardware flowcontrol */
- /* FIXME: check and IMPLEMENT XON/XOFF */
- switch (t->c_ospeed) {
- default: baud = -1; break;
- case B50: baud = 50; break;
- case B75: baud = 75; break;
- case B110: baud = 110; break;
- case B134: baud = 134; break;
- case B150: baud = 150; break;
- case B200: baud = 200; break;
- case B300: baud = 300; break;
- case B600: baud = 600; break;
- case B1200: baud = 1200; break;
- case B1800: baud = 1800; break;
- case B2400: baud = 2400; break;
- case B4800: baud = 4800; break;
- case B9600: baud = 9600; break;
- case B19200: baud = 19200; break;
- case B38400: baud = 38400; break;
- case B57600: baud = 57600; break;
- case B115200: baud = 115200; break;
- case B230400: baud = 230400; break;
- case B460800: baud = 460800; break;
- }
- if (baud > 0) {
- spiBaudSet(baud);
- }
- return 0;
-}
-
-static int
-spiPollRead (int minor)
-{
- unsigned char status;
-
- while (0 == ((status = port->SPLS) & LSRDataReady)) {
- /* Clean any dodgy status */
- if ((status & (LSRFramingError | LSROverrunError | LSRParityError |
- LSRBreakInterrupt)) != 0) {
- port->SPLS = (LSRFramingError | LSROverrunError | LSRParityError |
- LSRBreakInterrupt);
- }
- }
- return port->SPRB;
-}
-
-static int
-spiInterruptWrite (int minor, const char *buf, int len)
-{
- if (len > 0) {
- port->SPTB = *buf; /* write char to send */
- port->SPTC |= TCRIntEnabled; /* always enable tx interrupt */
- }
-
- return 0;
-}
-
-static int
-spiPollWrite(int minor,const char *buf,int len)
-{
- unsigned char status;
-
- while (len-- > 0) {
- do {
- if (port->SPHS) {
- port->SPHS = (HSRDsr | HSRCts);
- }
- status = port->SPLS;
- } while (0 == (status & LSRTxHoldEmpty));
- port->SPTB = *buf++;
- }
- return 0;
-}
-
-/*
- *
- * deinit SPI
- *
- */
-void
-spiDeInit(void)
-{
- extern uint32_t bsp_serial_rate;
- /*
- * disable interrupts for serial port
- * set it to state to work with polling boot monitor, if any...
- */
-
- /* set up baud rate to original state */
- spiBaudSet(bsp_serial_rate);
-
- /* clear any receive (error) status */
- port->SPLS = (LSRDataReady | LSRFramingError | LSROverrunError |
- LSRParityError | LSRBreakInterrupt);
-
- /* set up port control: DTR/RTS active,8 bit,1 stop,no parity */
- port->SPCTL = (CRNormal |
- CRDtr | CRRts |
- CRWordLength8 | CRParityDisable | CRStopBitsOne);
-
- /* clear handshake status bits */
- port->SPHS = (HSRDsr | HSRCts);
-
- /* enable receiver/transmitter, no interrupts */
- port->SPRC = (RCREnable | RCRIntDisable);
- port->SPTC = (TCREnable | TCRIntDisable);
-
-}
-
-/*
- *
- * init SPI
- *
- */
-rtems_status_code
-spiInitialize(void)
-{
- register unsigned tmp;
- rtems_isr_entry previous_isr; /* this is a dummy */
- extern bool bsp_serial_external_clock;
- extern uint32_t bsp_serial_rate;
-
- /*
- * Initialise the serial port
- */
-
- /*
- * select RTS/CTS hardware handshake lines,
- * select clock source
- */
- __asm__ volatile ("mfdcr %0, 0xa0" : "=r" (tmp)); /* IOCR */
-
- tmp &= ~3;
- tmp |= (bsp_serial_external_clock ? 2 : 0) | 1;
-
- __asm__ volatile ("mtdcr 0xa0, %0" : "=r" (tmp) : "0" (tmp)); /* IOCR */
-
- /* clear any receive (error) status */
- port->SPLS = (LSRDataReady | LSRFramingError | LSROverrunError |
- LSRParityError | LSRBreakInterrupt);
-
- /* set up baud rate */
- spiBaudSet(bsp_serial_rate);
-
- /* set up port control: DTR/RTS active,8 bit,1 stop,no parity */
- port->SPCTL = (CRNormal |
- CRDtr | CRRts |
- CRWordLength8 | CRParityDisable | CRStopBitsOne);
-
- /* clear handshake status bits */
- port->SPHS = (HSRDsr | HSRCts);
-
- if (ppc403_spi_interrupt) {
- /* add rx/tx isr to vector table */
- ictrl_set_vector(spiRxInterruptHandler,
- PPC_IRQ_EXT_SPIR,
- &previous_isr);
-
- ictrl_set_vector(spiTxInterruptHandler,
- PPC_IRQ_EXT_SPIT,
- &previous_isr);
-
- port->SPRC = (RCREnable | RCRIntEnabled | RCRErrorInt);
- port->SPTC = (TCREnable | TCRIntDisable); /* don't enable TxInt yet */
- }
- else {
- /* enable receiver/transmitter, no interrupts */
- port->SPRC = (RCREnable | RCRIntDisable);
- port->SPTC = (TCREnable | TCRIntDisable);
- }
-
- atexit(spiDeInit);
-
- return RTEMS_SUCCESSFUL;
-}
-
-/*
- ***************
- * BOILERPLATE *
- ***************
- */
-
-/* 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;
-
- /*
- * Set up TERMIOS
- */
- rtems_termios_initialize ();
-
- /*
- * Do device-specific initialization
- */
- spiInitialize ();
-
- /*
- * Register the device
- */
- status = rtems_io_register_name ("/dev/console", major, 0);
- if (status != RTEMS_SUCCESSFUL)
- rtems_fatal_error_occurred (status);
- return RTEMS_SUCCESSFUL;
-}
-
-
-/*
- * Open entry point
- */
-
-rtems_device_driver console_open(
- rtems_device_major_number major,
- rtems_device_minor_number minor,
- void * arg
-)
-{
- rtems_status_code sc;
- static const rtems_termios_callbacks intrCallbacks = {
- NULL, /* firstOpen */
- NULL, /* lastClose */
- NULL, /* pollRead */
- spiInterruptWrite, /* write */
- spiSetAttributes, /* setAttributes */
- spiStopRemoteTx, /* stopRemoteTx */
- spiStartRemoteTx, /* startRemoteTx */
- 1 /* outputUsesInterrupts */
- };
-
- static const rtems_termios_callbacks pollCallbacks = {
- NULL, /* firstOpen */
- NULL, /* lastClose */
- spiPollRead, /* pollRead */
- spiPollWrite, /* write */
- spiSetAttributes, /* setAttributes */
- spiStopRemoteTx, /* stopRemoteTx */
- spiStartRemoteTx, /* startRemoteTx */
- 0 /* outputUsesInterrupts */
- };
-
- if (ppc403_spi_interrupt) {
- rtems_libio_open_close_args_t *args = arg;
-
- sc = rtems_termios_open (major, minor, arg, &intrCallbacks);
- spittyp = args->iop->data1;
- }
- else {
- sc = rtems_termios_open (major, minor, arg, &pollCallbacks);
- }
- return sc;
-}
-
-/*
- * Close entry point
- */
-
-rtems_device_driver console_close(
- rtems_device_major_number major,
- rtems_device_minor_number minor,
- void * arg
-)
-{
- return rtems_termios_close (arg);
-}
-
-/*
- * 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
-)
-{
- return rtems_termios_read (arg);
-}
-
-/*
- * 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
-)
-{
- return rtems_termios_write (arg);
-}
-
-/*
- * IO Control entry point
- */
-
-rtems_device_driver console_control(
- rtems_device_major_number major,
- rtems_device_minor_number minor,
- void * arg
-)
-{
- return rtems_termios_ioctl (arg);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-04 08:59:19 +0000