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authorJoel Sherrill <joel.sherrill@OARcorp.com>1999-11-22 13:48:10 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1999-11-22 13:48:10 +0000
commit875fbdbb49cae497c654c9f9f27d97de78225b30 (patch)
treec7b7ed45f88a5182b4c7a676c281b54a598d356f /c/src/lib/libcpu/sh/sh7032
parentb22a19e1e74e2da551e81140e22a32a64ef29c1a (diff)
downloadrtems-875fbdbb49cae497c654c9f9f27d97de78225b30.tar.bz2
Added files missed by previous merger of SH-2 port.
Diffstat (limited to 'c/src/lib/libcpu/sh/sh7032')
-rw-r--r--c/src/lib/libcpu/sh/sh7032/delay/Makefile.in70
-rw-r--r--c/src/lib/libcpu/sh/sh7032/delay/delay.c53
-rw-r--r--c/src/lib/libcpu/sh/sh7032/sci/Makefile.in71
-rw-r--r--c/src/lib/libcpu/sh/sh7032/sci/sci.c359
4 files changed, 553 insertions, 0 deletions
diff --git a/c/src/lib/libcpu/sh/sh7032/delay/Makefile.in b/c/src/lib/libcpu/sh/sh7032/delay/Makefile.in
new file mode 100644
index 0000000000..740015b9f7
--- /dev/null
+++ b/c/src/lib/libcpu/sh/sh7032/delay/Makefile.in
@@ -0,0 +1,70 @@
+#
+# $Id$
+#
+
+@SET_MAKE@
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+top_builddir = ../../..
+subdir = sh/sh7032/delay
+
+RTEMS_ROOT = @RTEMS_ROOT@
+PROJECT_ROOT = @PROJECT_ROOT@
+
+VPATH = @srcdir@
+
+PGM = ${ARCH}/delay.rel
+
+# C source names, if any, go here -- minus the .c
+C_PIECES = delay
+C_FILES = $(C_PIECES:%=%.c)
+C_O_FILES = $(C_PIECES:%=${ARCH}/%.o)
+
+H_FILES =
+
+# Assembly source names, if any, go here -- minus the .S
+S_PIECES =
+S_FILES = $(S_PIECES:%=%.S)
+S_O_FILES = $(S_FILES:%.S=${ARCH}/%.o)
+
+SRCS = $(DOCS) $(C_FILES) $(H_FILES)
+OBJS = $(C_O_FILES)
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
+include $(RTEMS_ROOT)/make/leaf.cfg
+
+INSTALL_CHANGE = @INSTALL_CHANGE@
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+DEFINES +=
+CPPFLAGS +=
+CFLAGS +=
+
+LD_PATHS +=
+LD_LIBS +=
+LDFLAGS +=
+
+#
+# Add your list of files to delete here. The config files
+# already know how to delete some stuff, so you may want
+# to just run 'make clean' first to see what gets missed.
+# 'make clobber' already includes 'make clean'
+#
+
+CLEAN_ADDITIONS +=
+CLOBBER_ADDITIONS +=
+
+${PGM}: ${SRCS} ${OBJS}
+ $(make-rel)
+
+all: ${ARCH} $(SRCS) $(PGM)
+
+# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile
+install: all
+
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+ cd $(top_builddir) \
+ && CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
diff --git a/c/src/lib/libcpu/sh/sh7032/delay/delay.c b/c/src/lib/libcpu/sh/sh7032/delay/delay.c
new file mode 100644
index 0000000000..83f48df853
--- /dev/null
+++ b/c/src/lib/libcpu/sh/sh7032/delay/delay.c
@@ -0,0 +1,53 @@
+/*
+ * This routine is a simple spin delay
+ *
+ * Author: Ralf Corsepius (corsepiu@faw.uni-ulm.de)
+ *
+ * COPYRIGHT (c) 1999, Ralf Corsepius, Ulm, Germany
+ *
+ * This program 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.
+ *
+ *
+ * COPYRIGHT (c) 1989-1999.
+ * On-Line Applications Research Corporation (OAR).
+ * Copyright assigned to U.S. Government, 1994.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.OARcorp.com/rtems/license.html.
+ *
+ * $Id$
+ */
+
+
+#include <rtems.h>
+
+/*
+ * Simple spin delay in microsecond units for device drivers.
+ * This is very dependent on the clock speed of the target.
+ *
+ * Since we don't have a real time clock, this is a very rough
+ * approximation, assuming that each cycle of the delay loop takes
+ * approx. 4 machine cycles.
+ *
+ * e.g.: clicks_per_second = 20MHz
+ * => 5e-8 secs per instruction
+ * => 4 * 5e-8 secs per delay loop
+ */
+
+void CPU_delay( unsigned32 microseconds )
+{
+ register unsigned32 clicks_per_usec =
+ rtems_cpu_configuration_get_clicks_per_second() / 1000000 ;
+ register unsigned32 _delay =
+ (microseconds) * (clicks_per_usec);
+ asm volatile (
+"0: add #-4,%0\n
+ nop\n
+ cmp/pl %0\n
+ bt 0b
+ nop"
+ :: "r" (_delay) );
+}
diff --git a/c/src/lib/libcpu/sh/sh7032/sci/Makefile.in b/c/src/lib/libcpu/sh/sh7032/sci/Makefile.in
new file mode 100644
index 0000000000..2548c0b478
--- /dev/null
+++ b/c/src/lib/libcpu/sh/sh7032/sci/Makefile.in
@@ -0,0 +1,71 @@
+##
+## $Id$
+##
+
+@SET_MAKE@
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+top_builddir = ../../..
+subdir = sh/sh7045/sci
+
+RTEMS_ROOT = @RTEMS_ROOT@
+PROJECT_ROOT = @PROJECT_ROOT@
+
+VPATH = @srcdir@
+
+PGM = ${ARCH}/sci.rel
+
+# C source names, if any, go here -- minus the .c
+C_PIECES = sci
+C_FILES = $(C_PIECES:%=%.c)
+C_O_FILES = $(C_PIECES:%=${ARCH}/%.o)
+
+H_FILES =
+
+# Assembly source names, if any, go here -- minus the .s
+S_PIECES =
+S_FILES = $(S_PIECES:%=%.s)
+S_O_FILES = $(S_FILES:%.s=${ARCH}/%.o)
+
+SRCS = $(C_FILES) $(H_FILES) $(S_FILES)
+OBJS = $(C_O_FILES) $(S_O_FILES)
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
+include $(RTEMS_ROOT)/make/leaf.cfg
+
+INSTALL_CHANGE = @INSTALL_CHANGE@
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+DEFINES +=
+CPPFLAGS +=
+CFLAGS +=
+
+LD_PATHS +=
+LD_LIBS +=
+LDFLAGS +=
+
+#
+# Add your list of files to delete here. The config files
+# already know how to delete some stuff, so you may want
+# to just run 'make clean' first to see what gets missed.
+# 'make clobber' already includes 'make clean'
+#
+
+CLEAN_ADDITIONS +=
+CLOBBER_ADDITIONS +=
+
+${PGM}: ${SRCS} ${OBJS}
+ $(make-rel)
+
+all: ${ARCH} $(SRCS) $(PGM)
+
+# the .rel file built here will be put into libbsp.a by
+# libbsp/sh/BSP/wrapup/Makefile
+install: all
+
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+ cd $(top_builddir) \
+ && CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
diff --git a/c/src/lib/libcpu/sh/sh7032/sci/sci.c b/c/src/lib/libcpu/sh/sh7032/sci/sci.c
new file mode 100644
index 0000000000..b194e446d7
--- /dev/null
+++ b/c/src/lib/libcpu/sh/sh7032/sci/sci.c
@@ -0,0 +1,359 @@
+/*
+ * /dev/sci[0|1] for Hitachi SH 703X
+ *
+ * Author: Ralf Corsepius (corsepiu@faw.uni-ulm.de)
+ *
+ * COPYRIGHT (c) 1997-1999, Ralf Corsepius, Ulm, Germany
+ *
+ * This program 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.
+ *
+ *
+ * COPYRIGHT (c) 1998.
+ * On-Line Applications Research Corporation (OAR).
+ * Copyright assigned to U.S. Government, 1994.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.OARcorp.com/rtems/license.html.
+ *
+ * $Id$
+ */
+
+#include <rtems.h>
+
+#include <stdlib.h>
+
+#include <rtems/libio.h>
+#include <iosupp.h>
+#include <rtems/score/sh_io.h>
+#include <rtems/score/ispsh7032.h>
+#include <rtems/score/iosh7032.h>
+#include <sh/sh7_sci.h>
+#include <sh/sh7_pfc.h>
+#include <sh/sci.h>
+
+/*
+ * NOTE: Some SH variants have 3 sci devices
+ */
+
+#define SCI_MINOR_DEVICES 2
+
+#define SH_SCI_BASE_0 SCI0_SMR
+#define SH_SCI_BASE_1 SCI1_SMR
+
+struct scidev_t {
+ char * name ;
+ unsigned32 addr ;
+ rtems_device_minor_number minor ;
+ unsigned short opened ;
+ tcflag_t cflags ;
+} sci_device[SCI_MINOR_DEVICES] =
+{
+ { "/dev/sci0", SH_SCI_BASE_0, 0, 0, B9600 | CS8 },
+ { "/dev/sci1", SH_SCI_BASE_1, 1, 0, B9600 | CS8 }
+} ;
+
+/* imported from scitab.rel */
+extern int _sci_get_brparms(
+ tcflag_t cflag,
+ unsigned char *smr,
+ unsigned char *brr );
+
+/* Translate termios' tcflag_t into sci settings */
+static int _sci_set_cflags(
+ struct scidev_t *sci_dev,
+ tcflag_t c_cflag )
+{
+ unsigned8 smr ;
+ unsigned8 brr ;
+
+ if ( c_cflag & CBAUD )
+ {
+ if ( _sci_get_brparms( c_cflag, &smr, &brr ) != 0 )
+ return -1 ;
+ }
+
+ if ( c_cflag & CSIZE )
+ {
+ if ( c_cflag & CS8 )
+ smr &= ~SCI_SEVEN_BIT_DATA;
+ else if ( c_cflag & CS7 )
+ smr |= SCI_SEVEN_BIT_DATA;
+ else
+ return -1 ;
+ }
+
+ if ( c_cflag & CSTOPB )
+ smr |= SCI_STOP_BITS_2;
+ else
+ smr &= ~SCI_STOP_BITS_2;
+
+ if ( c_cflag & PARENB )
+ smr |= SCI_PARITY_ON ;
+ else
+ smr &= ~SCI_PARITY_ON ;
+
+ if ( c_cflag & PARODD )
+ smr |= SCI_ODD_PARITY ;
+ else
+ smr &= ~SCI_ODD_PARITY;
+
+ write8( smr, sci_dev->addr + SCI_SMR );
+ write8( brr, sci_dev->addr + SCI_BRR );
+
+ return 0 ;
+}
+
+static void _sci_init(
+ rtems_device_minor_number minor )
+{
+ unsigned16 temp16 ;
+
+ /* Pin function controller initialisation for asynchronous mode */
+ if( minor == 0)
+ {
+ temp16 = read16( PFC_PBCR1);
+ temp16 &= ~( PB8MD | PB9MD );
+ temp16 |= (PB_TXD0 | PB_RXD0);
+ write16( temp16, PFC_PBCR1);
+ }
+ else
+ {
+ temp16 = read16( PFC_PBCR1);
+ temp16 &= ~( PB10MD | PB11MD);
+ temp16 |= (PB_TXD1 | PB_RXD1);
+ write16( temp16, PFC_PBCR1);
+ }
+
+ /* disable sck-pin */
+ if( minor == 0)
+ {
+ temp16 = read16( PFC_PBCR1);
+ temp16 &= ~(PB12MD);
+ write16( temp16, PFC_PBCR1);
+ }
+ else
+ {
+ temp16 = read16( PFC_PBCR1);
+ temp16 &= ~(PB13MD);
+ write16( temp16, PFC_PBCR1);
+ }
+}
+
+static void _sci_tx_polled(
+ int minor,
+ const char buf )
+{
+ struct scidev_t *scidev = &sci_device[minor] ;
+ signed8 ssr ;
+
+ while ( !inb((scidev->addr + SCI_SSR) & SCI_TDRE ))
+ ;
+ write8(buf,scidev->addr+SCI_TDR);
+
+ ssr = inb(scidev->addr+SCI_SSR);
+ ssr &= ~SCI_TDRE ;
+ write8(ssr,scidev->addr+SCI_SSR);
+}
+
+static int _sci_rx_polled (
+ int minor)
+{
+ struct scidev_t *scidev = &sci_device[minor] ;
+
+ unsigned char c;
+ char ssr ;
+ ssr = read8(scidev->addr + SCI_SSR) ;
+
+ if (ssr & (SCI_PER | SCI_FER | SCI_ORER))
+ write8(ssr & ~(SCI_PER | SCI_FER | SCI_ORER), scidev->addr+SCI_SSR);
+
+ if ( !(ssr & SCI_RDRF) )
+ return -1;
+
+ c = read8(scidev->addr + SCI_RDR) ;
+
+ write8(ssr & ~SCI_RDRF,scidev->addr + SCI_SSR);
+ return c;
+}
+
+/*
+ * sci_initialize
+ */
+
+rtems_device_driver sh_sci_initialize(
+ rtems_device_major_number major,
+ rtems_device_minor_number minor,
+ void *arg )
+{
+ rtems_device_driver status ;
+ rtems_device_minor_number i;
+
+ /*
+ * register all possible devices.
+ * the initialization of the hardware is done by sci_open
+ */
+
+ for ( i = 0 ; i < SCI_MINOR_DEVICES ; i++ )
+ {
+ status = rtems_io_register_name(
+ sci_device[i].name,
+ major,
+ sci_device[i].minor );
+ if (status != RTEMS_SUCCESSFUL)
+ rtems_fatal_error_occurred(status);
+ }
+
+ /* default hardware setup */
+
+ return RTEMS_SUCCESSFUL;
+}
+
+
+/*
+ * Open entry point
+ */
+
+rtems_device_driver sh_sci_open(
+ rtems_device_major_number major,
+ rtems_device_minor_number minor,
+ void * arg )
+{
+ unsigned8 temp8;
+
+ /* check for valid minor number */
+ if(( minor > ( SCI_MINOR_DEVICES -1 )) || ( minor < 0 ))
+ {
+ return RTEMS_INVALID_NUMBER;
+ }
+
+ /* device already opened */
+ if ( sci_device[minor].opened > 0 )
+ {
+ sci_device[minor].opened++ ;
+ return RTEMS_SUCCESSFUL ;
+ }
+
+ _sci_init( minor );
+
+ if (minor == 0) {
+ temp8 = read8(sci_device[minor].addr + SCI_SCR);
+ temp8 &= ~(SCI_TE | SCI_RE) ;
+ write8(temp8, sci_device[minor].addr + SCI_SCR); /* Clear SCR */
+ _sci_set_cflags( &sci_device[minor], sci_device[minor].cflags );
+
+/* FIXME: Should be one bit delay */
+ CPU_delay(50000); /* microseconds */
+
+ temp8 |= SCI_RE | SCI_TE;
+ write8(temp8, sci_device[minor].addr + SCI_SCR); /* Enable clock output */
+ } else {
+ temp8 = read8(sci_device[minor].addr + SCI_SCR);
+ temp8 &= ~(SCI_TE | SCI_RE) ;
+ write8(temp8, sci_device[minor].addr + SCI_SCR); /* Clear SCR */
+ _sci_set_cflags( &sci_device[minor], sci_device[minor].cflags );
+
+/* FIXME: Should be one bit delay */
+ CPU_delay(50000); /* microseconds */
+
+ temp8 |= SCI_RE | SCI_TE;
+ write8(temp8, sci_device[minor].addr + SCI_SCR); /* Enable clock output */
+ }
+
+ sci_device[minor].opened++ ;
+
+ return RTEMS_SUCCESSFUL ;
+}
+
+/*
+ * Close entry point
+ */
+
+rtems_device_driver sh_sci_close(
+ rtems_device_major_number major,
+ rtems_device_minor_number minor,
+ void * arg
+)
+{
+ if( sci_device[minor].opened == 0 )
+ {
+ return RTEMS_INVALID_NUMBER;
+ }
+
+ sci_device[minor].opened-- ;
+
+ return RTEMS_SUCCESSFUL ;
+}
+
+/*
+ * read bytes from the serial port.
+ */
+
+rtems_device_driver sh_sci_read(
+ rtems_device_major_number major,
+ rtems_device_minor_number minor,
+ void * arg
+)
+{
+ int count = 0;
+
+ rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *) arg;
+ char * buffer = rw_args->buffer;
+ int maximum = rw_args->count;
+
+ for (count = 0; count < maximum; count++) {
+ buffer[ count ] = _sci_rx_polled(minor);
+ if (buffer[ count ] == '\n' || buffer[ count ] == '\r') {
+ buffer[ count++ ] = '\n';
+ break;
+ }
+ }
+
+ rw_args->bytes_moved = count;
+ return (count >= 0) ? RTEMS_SUCCESSFUL : RTEMS_UNSATISFIED;
+}
+
+/*
+ * write bytes to the serial port.
+ */
+
+rtems_device_driver sh_sci_write(
+ rtems_device_major_number major,
+ rtems_device_minor_number minor,
+ void * arg
+)
+{
+ int count;
+
+ rtems_libio_rw_args_t *rw_args = (rtems_libio_rw_args_t *) arg;
+ char *buffer = rw_args->buffer;
+ int maximum = rw_args->count;
+
+ for (count = 0; count < maximum; count++) {
+#if 0
+ if ( buffer[ count ] == '\n') {
+ outbyte(minor, '\r');
+ }
+#endif
+ _sci_tx_polled( minor, buffer[ count ] );
+ }
+
+ rw_args->bytes_moved = maximum;
+ return 0;
+}
+
+/*
+ * IO Control entry point
+ */
+
+rtems_device_driver sh_sci_control(
+ rtems_device_major_number major,
+ rtems_device_minor_number minor,
+ void * arg
+)
+{
+ /* Not yet supported */
+ return RTEMS_SUCCESSFUL ;
+}