diff options
Diffstat (limited to 'c/src/lib/libcpu/powerpc/ppc403/console/console405.c')
-rw-r--r-- | c/src/lib/libcpu/powerpc/ppc403/console/console405.c | 539 |
1 files changed, 0 insertions, 539 deletions
diff --git a/c/src/lib/libcpu/powerpc/ppc403/console/console405.c b/c/src/lib/libcpu/powerpc/ppc403/console/console405.c deleted file mode 100644 index 96c3534a75..0000000000 --- a/c/src/lib/libcpu/powerpc/ppc403/console/console405.c +++ /dev/null @@ -1,539 +0,0 @@ -/* - * This file contains the PowerPC 405GP 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). - * - * Modifications for PPC405GP by Dennis Ehlin - */ - -#define NO_BSP_INIT - -#include <rtems.h> -#include <rtems/libio.h> -#include "../irq/ictrl.h" -#include <stdlib.h> /* for atexit() */ -#include <rtems/console.h> - -struct async { -/*---------------------------------------------------------------------------+ -| Data Register. -+---------------------------------------------------------------------------*/ - unsigned char RBR; /* 0x00 */ - #define THR RBR -/*---------------------------------------------------------------------------+ -| Interrupt registers -+---------------------------------------------------------------------------*/ - unsigned char IER; /* 0x01 */ - #define IER_RCV 0x01 - #define IER_XMT 0x02 - #define IER_LS 0x04 - #define IER_MS 0x08 - - unsigned char ISR; /* 0x02 */ - #define ISR_MS 0x00 - #define ISR_nIP 0x01 - #define ISR_Tx 0x02 - #define ISR_Rx 0x04 - #define ISR_LS 0x06 - #define ISR_RxTO 0x0C - #define ISR_64BFIFO 0x20 - #define ISR_FIFOworks 0x40 - #define ISR_FIFOen 0x80 - -/*---------------------------------------------------------------------------+ -| FIFO Control registers -+---------------------------------------------------------------------------*/ - #define FCR ISR - #define FCR_FE 0x01 /* FIFO enable */ - #define FCR_CRF 0x02 /* Clear receive FIFO */ - #define FCR_CTF 0x04 /* Clear transmit FIFO */ - #define FCR_DMA 0x08 /* DMA mode select */ - #define FCR_F64 0x20 /* Enable 64 byte fifo (16750+) */ - #define FCR_RT14 0xC0 /* Set Rx trigger at 14 */ - #define FCR_RT8 0x80 /* Set Rx trigger at 8 */ - #define FCR_RT4 0x40 /* Set Rx trigger at 4 */ - #define FCR_RT1 0x00 /* Set Rx trigger at 1 */ - -/*---------------------------------------------------------------------------+ -| Baud rate divisor registers -+---------------------------------------------------------------------------*/ - #define DLL RBR - #define DLM IER - -/*---------------------------------------------------------------------------+ -| Alternate function registers -+---------------------------------------------------------------------------*/ - #define AFR ISR - -/*---------------------------------------------------------------------------+ -| Line control Register. -+---------------------------------------------------------------------------*/ - unsigned char LCR; /* 0x03 */ - #define LCR_WL5 0x00 /* Word length 5 */ - #define LCR_WL6 0x01 /* Word length 6 */ - #define LCR_WL7 0x02 /* Word length 7 */ - #define LCR_WL8 0x03 /* Word length 8 */ - - #define LCR_SB1 0x00 /* 1 stop bits */ - #define LCR_SB1_5 0x04 /* 1.5 stop bits , only valid with 5 bit words*/ - #define LCR_SB1_5 0x04 /* 2 stop bits */ - - #define LCR_PN 0x00 /* Parity NONE */ - #define LCR_PE 0x0C /* Parity EVEN */ - #define LCR_PO 0x08 /* Parity ODD */ - #define LCR_PM 0x28 /* Forced "mark" parity */ - #define LCR_PS 0x38 /* Forced "space" parity */ - - #define LCR_DL 0x80 /* Enable baudrate latch */ - -/*---------------------------------------------------------------------------+ -| Modem control Register. -+---------------------------------------------------------------------------*/ - unsigned char MCR; /* 0x04 */ - #define MCR_DTR 0x01 - #define MCR_RTS 0x02 - #define MCR_INT 0x08 /* Enable interrupts */ - #define MCR_LOOP 0x10 /* Loopback mode */ - -/*---------------------------------------------------------------------------+ -| Line status Register. -+---------------------------------------------------------------------------*/ - unsigned char LSR; /* 0x05 */ - #define LSR_RSR 0x01 - #define LSR_OE 0x02 - #define LSR_PE 0x04 - #define LSR_FE 0x08 - #define LSR_BI 0x10 - #define LSR_THE 0x20 - #define LSR_TEMT 0x40 - #define LSR_FIE 0x80 - -/*---------------------------------------------------------------------------+ -| Modem status Register. -+---------------------------------------------------------------------------*/ - unsigned char MSR; /* 0x06 */ - #define UART_MSR_DCTS 0x01 - #define UART_MSR_DDSR 0x02 - #define UART_MSR_TERI 0x04 - #define UART_MSR_DDCD 0x08 - #define UART_MSR_CTS 0x10 - #define UART_MSR_DSR 0x20 - #define UART_MSR_RI 0x40 - #define UART_MSR_CD 0x80 - -/*---------------------------------------------------------------------------+ -| Scratch pad Register. -+---------------------------------------------------------------------------*/ - unsigned char SCR; /* 0x07 */ -}; - - -#define USE_UART 0 /* 0=UART0 1=UART1 */ -#define UART_INTERNAL_CLOCK_DIVISOR 16 - -typedef volatile struct async *pasync; -static const pasync port = (pasync)(0xEF600300 + (USE_UART*0x100)); /* 0xEF600300 - port A, 0xEF600400 - port B */ - -static void *spittyp; /* handle for termios */ -int ppc403_spi_interrupt = 0; /* do not use interrupts... */ - -extern uint32_t bsp_serial_per_sec; -extern uint32_t bsp_serial_rate; -extern bool bsp_serial_external_clock; - -static int spiBaudRound(double x) -{ - return (int)((int)((x-(int)x)*1000)>500 ? x+1 : x); -} - -static void -spiBaudSet(uint32_t baudrate) -{ - uint32_t tmp; - - tmp = spiBaudRound( (double)bsp_serial_per_sec / (baudrate * 16) ); - - port->LCR = port->LCR | LCR_DL; - - port->DLL = tmp & 0xff; - port->DLM = tmp >> 8; - - port->LCR = port->LCR & ~LCR_DL; -} -/* - * 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) -{ - - /* Wait for character */ - while ((port->LSR & LSR_RSR)==0); - - return port->RBR; -} - -static ssize_t -spiPollWrite(int minor, const char *buf, size_t len) -{ - - while (len-- > 0) { - while (!(port->LSR & LSR_THE)); - port->THR = *buf++; - } - return 0; -} - -/* - * enable/disable RTS line to start/stop remote transmitter - */ -static int -spiStartRemoteTx (int minor) -{ -/* Not implemented ! - rtems_interrupt_level level; - - rtems_interrupt_disable (level); - port->SPCTL |= CRRts; activate RTS - rtems_interrupt_enable (level); -*/ - return 0; -} - -static int -spiStopRemoteTx (int minor) -{ -/* Not implemented ! - rtems_interrupt_level level; - - rtems_interrupt_disable (level); - port->SPCTL &= ~CRRts; deactivate RTS - rtems_interrupt_enable (level); -*/ - return 0; -} - -static ssize_t InterruptWrite (int minor, const char *buf, size_t len) -{ - if (len > 0) { - port->IER |= IER_XMT; /* always enable tx interrupt */ - port->THR = *buf; /* write char to send */ - } - - return 0; -} - -static rtems_isr serial_ISR(rtems_vector_number v) -{ - unsigned char _isr; - char ch; - int res; - - _isr=port->ISR & 0x0E; - - if ((_isr == ISR_Rx) || (_isr==ISR_RxTO)) { - ch = port->RBR; - rtems_termios_enqueue_raw_characters (spittyp,&ch,1); - } - - if (_isr == ISR_Tx) { - res = rtems_termios_dequeue_characters (spittyp,1); - if (res==0) { - port->IER &= ~IER_XMT; - } - - } -} - -/* - * deinit SPI - */ -static void -spiDeInit(void) -{ - /* - * 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); - - port->IER = 0; -} - -/* - * init SPI - */ -static rtems_status_code -spiInitialize(void) -{ - register unsigned tmp; - rtems_isr_entry previous_isr; /* this is a dummy */ - unsigned char _ier; - - /* - * Initialise the serial port - */ - - /* - * Select clock source and set uart internal clock divisor - */ - - __asm__ volatile ("mfdcr %0, 0x0b1" : "=r" (tmp)); /* CPC_CR0 0x0b1 */ - - /* UART0 bit 24 0x80, UART1 bit 25 0x40 */ - tmp |= (bsp_serial_external_clock ? (USE_UART ? 0x40 : 0x80) : 0); - - tmp |= (bsp_serial_external_clock ? 0: ((UART_INTERNAL_CLOCK_DIVISOR -1) << 1)); - - __asm__ volatile ("mtdcr 0x0b1, %0" : "=r" (tmp) : "0" (tmp)); /* CPC_CR0 0x0b1*/ - - /* Disable port interrupts while changing hardware */ - _ier = port->IER; - port->IER = 0; - - /* set up port control: 8 bit,1 stop,no parity */ - port->LCR = LCR_WL8 | LCR_SB1 | LCR_PN; - - /* set up baud rate */ - spiBaudSet(bsp_serial_rate); - - if (ppc403_spi_interrupt) { - - /* add rx/tx isr to vector table */ - if (USE_UART==0) - ictrl_set_vector(serial_ISR,PPC_IRQ_EXT_UART0,&previous_isr); - else - ictrl_set_vector(serial_ISR,PPC_IRQ_EXT_UART1,&previous_isr); - - /* Enable and clear FIFO */ - port->FCR = FCR_FE | FCR_CRF | FCR_CTF | FCR_RT8; - - /* Enable recive interrupts, don't enable TxInt yet */ - port->IER=IER_RCV; - } - else { - port->IER=_ier; - } - - 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 */ - InterruptWrite, /* 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); -} |