From d751cecbb1ca1b7ac0a7bc8492e0e61e6c5fc0c7 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Tue, 17 May 2011 20:39:40 +0000 Subject: * tools/build/.cvsignore, tools/build/ChangeLog, tools/build/Makefile.am, tools/build/README, tools/build/binpatch.c, tools/build/cklength.c, tools/build/config.h.in, tools/build/configure.ac, tools/build/cvsignore-add.sh, tools/build/doxy-filter, tools/build/eolstrip.c, tools/build/install-if-change.in, tools/build/multigen, tools/build/packhex.c, tools/build/rtems-bin2c.c, tools/build/search-id.sh, tools/build/unhex.c, tools/cpu/.cvsignore, tools/cpu/ChangeLog, tools/cpu/Makefile.am, tools/cpu/configure.ac, tools/cpu/generic/.cvsignore, tools/cpu/generic/ChangeLog, tools/cpu/generic/Makefile.am, tools/cpu/generic/configure.ac, tools/cpu/generic/size_rtems.in, tools/cpu/nios2/.cvsignore, tools/cpu/nios2/ChangeLog, tools/cpu/nios2/Makefile.am, tools/cpu/nios2/README, tools/cpu/nios2/bridges.c, tools/cpu/nios2/bridges.h, tools/cpu/nios2/clocks.c, tools/cpu/nios2/clocks.h, tools/cpu/nios2/configure.ac, tools/cpu/nios2/devices.c, tools/cpu/nios2/devices.h, tools/cpu/nios2/linkcmds.c, tools/cpu/nios2/linkcmds.h, tools/cpu/nios2/memory.c, tools/cpu/nios2/memory.h, tools/cpu/nios2/nios2gen.c, tools/cpu/nios2/output.c, tools/cpu/nios2/output.h, tools/cpu/nios2/ptf.c, tools/cpu/nios2/ptf.h, tools/cpu/nios2/sample.ptf, tools/cpu/sh/.cvsignore, tools/cpu/sh/AUTHORS, tools/cpu/sh/COPYING, tools/cpu/sh/ChangeLog, tools/cpu/sh/Makefile.am, tools/cpu/sh/TODO, tools/cpu/sh/configure.ac, tools/cpu/sh/sci.c, tools/cpu/sh/sci.h, tools/cpu/sh/shgen.c: New files. --- tools/cpu/sh/.cvsignore | 14 ++ tools/cpu/sh/AUTHORS | 3 + tools/cpu/sh/COPYING | 343 ++++++++++++++++++++++++++++++++++++++++++++++ tools/cpu/sh/ChangeLog | 86 ++++++++++++ tools/cpu/sh/Makefile.am | 18 +++ tools/cpu/sh/TODO | 13 ++ tools/cpu/sh/configure.ac | 25 ++++ tools/cpu/sh/sci.c | 165 ++++++++++++++++++++++ tools/cpu/sh/sci.h | 11 ++ tools/cpu/sh/shgen.c | 114 +++++++++++++++ 10 files changed, 792 insertions(+) create mode 100644 tools/cpu/sh/.cvsignore create mode 100644 tools/cpu/sh/AUTHORS create mode 100644 tools/cpu/sh/COPYING create mode 100644 tools/cpu/sh/ChangeLog create mode 100644 tools/cpu/sh/Makefile.am create mode 100644 tools/cpu/sh/TODO create mode 100644 tools/cpu/sh/configure.ac create mode 100644 tools/cpu/sh/sci.c create mode 100644 tools/cpu/sh/sci.h create mode 100644 tools/cpu/sh/shgen.c (limited to 'tools/cpu/sh') diff --git a/tools/cpu/sh/.cvsignore b/tools/cpu/sh/.cvsignore new file mode 100644 index 0000000000..bfdfd995be --- /dev/null +++ b/tools/cpu/sh/.cvsignore @@ -0,0 +1,14 @@ +aclocal.m4 +autom4te*.cache +config.cache +config.guess +config.log +config.status +config.sub +configure +depcomp +install-sh +Makefile +Makefile.in +missing +mkinstalldirs diff --git a/tools/cpu/sh/AUTHORS b/tools/cpu/sh/AUTHORS new file mode 100644 index 0000000000..225c2fa974 --- /dev/null +++ b/tools/cpu/sh/AUTHORS @@ -0,0 +1,3 @@ +Ralf Corsepius (corsepiu@faw.uni-ulm.de) + * Initial implementation + * generator for sci bitrate table diff --git a/tools/cpu/sh/COPYING b/tools/cpu/sh/COPYING new file mode 100644 index 0000000000..01e8961d69 --- /dev/null +++ b/tools/cpu/sh/COPYING @@ -0,0 +1,343 @@ +# +# $Id$ +# + + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) 19yy name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/tools/cpu/sh/ChangeLog b/tools/cpu/sh/ChangeLog new file mode 100644 index 0000000000..f9eae7b598 --- /dev/null +++ b/tools/cpu/sh/ChangeLog @@ -0,0 +1,86 @@ +2011-02-02 Ralf Corsépius + + * configure.ac: Require autoconf-2.68, automake-1.11.1. + +2006-12-02 Ralf Corsépius + + * configure.ac: New BUG-REPORT address. + +2006-10-17 Ralf Corsépius + + * configure.ac: Require autoconf-2.60. Require automake-1.10. + +2006-01-31 Ralf Corsepius + + * shgen.c: include . + +2004-09-24 Ralf Corsepius + + * configure.ac: Require automake > 1.9. + +2004-01-06 Ralf Corsepius + + * Makefile.am: Let shgen.1 depend on shgen$(EXEEXT). + +2003-12-12 Ralf Corsepius + + * configure.ac: Require automake >= 1.8, autoconf >= 2.59. + +2003-08-11 Ralf Corsepius + + * configure.ac: Use rtems-bugs@rtems.com as bug report email address. + +2003-03-06 Ralf Corsepius + + * configure.ac: Remove AC_CONFIG_AUX_DIR. + +2003-02-11 Ralf Corsepius + + * configure.ac: AM_INIT_AUTOMAKE([1.7.2]). + +2003-02-11 Ralf Corsepius + + * configure.ac: AC_PREREQ(2.57). + +2002-10-21 Ralf Corsepius + + * .cvsignore: Reformat. + Add autom4te*cache. + Remove autom4te.cache. + +2002-04-01 Ralf Corsepius + + * configure.ac: Remove AC_EXEEXT (obsolete). + +2002-03-27 Ralf Corsepius + + * configure.ac: + AC_INIT(package,_RTEMS_VERSION,_RTEMS_BUGS). + AM_INIT_AUTOMAKE([no-define foreign 1.6]). + * Makefile.am: Remove AUTOMAKE_OPTIONS. + +2001-10-11 Ralf Corsepius + + * .cvsignore: Add autom4te.cache for autoconf > 2.52. + * configure.in: Remove. + * configure.ac: New file, generated from configure.in by autoupdate. + +2000-11-13 Ralf Corsepius + + * shgen.c: Set default Phi to 20MHz (BUG-FIX). + +2000l-11-09 Ralf Corsepius + + * Makefile.am: Use ... instead of RTEMS_TOPdir in ACLOCAL_AMFLAGS. + +2000-11-02 Ralf Corsepius + + * Makefile.am: Switch to ACLOCAL_AMFLAGS = -I $(RTEMS_TOPdir)/aclocal. + +2000-10-30 Ralf Corsepius + + * Makefile.am: Switch to GNU-canonicalized autoconf macros. + +2000-08-10 Joel Sherrill + + * ChangeLog: New file. diff --git a/tools/cpu/sh/Makefile.am b/tools/cpu/sh/Makefile.am new file mode 100644 index 0000000000..be30a63c12 --- /dev/null +++ b/tools/cpu/sh/Makefile.am @@ -0,0 +1,18 @@ +## +## $Id$ +## + +ACLOCAL_AMFLAGS = -I ../../../aclocal + +noinst_PROGRAMS = shgen + +shgen_SOURCES = sci.h sci.c shgen.c + +if HELP2MAN +man_MANS = shgen.1 + +shgen.1: shgen$(EXEEXT) + $(HELP2MAN) -N ./shgen >$@ +endif + +include $(top_srcdir)/../../../automake/host.am diff --git a/tools/cpu/sh/TODO b/tools/cpu/sh/TODO new file mode 100644 index 0000000000..bcdd1bf6df --- /dev/null +++ b/tools/cpu/sh/TODO @@ -0,0 +1,13 @@ +* Add support for more drivers to shgen !!!! + +* shgen relies on having a gnu-compatible getopt, which should be + available on all hosts using gcc/egcs/binutils. + Using other getopt-variants may produce faulty results or shgen may also + refuse to compile. Probably the easiest solution to this problem would be + to integrate libiberty into rtems. + +* shgen uses floating point mathematics. Therefore Makefile.in contains a + reference to libm. In case the host doesn't have its floating point + support in libm, shgen will fail to compile. If we should ever meet such + a host, checks for floating point libraries have to be added to rtems' + autoconf support. diff --git a/tools/cpu/sh/configure.ac b/tools/cpu/sh/configure.ac new file mode 100644 index 0000000000..82fae15f96 --- /dev/null +++ b/tools/cpu/sh/configure.ac @@ -0,0 +1,25 @@ +## Process this file with autoconf to produce a configure script. +## +## $Id$ + +AC_PREREQ([2.68]) +AC_INIT([rtems-tools-cpu-sh],[_RTEMS_VERSION],[http://www.rtems.org/bugzilla]) +AC_CONFIG_SRCDIR([shgen.c]) +RTEMS_TOP(../../..) + +RTEMS_CANONICAL_TARGET_CPU + +AM_INIT_AUTOMAKE([foreign 1.11.1]) +AM_MAINTAINER_MODE + +AC_PROG_CC +AC_CHECK_LIB(m,fabs) +AC_CHECK_FUNCS(getopt_long) +AC_CHECK_PROGS(HELP2MAN,help2man) +AM_CONDITIONAL(HELP2MAN,test -n "$HELP2MAN" ) + +RTEMS_TOOLPATHS + +# Explicitly list all Makefiles here +AC_CONFIG_FILES([Makefile]) +AC_OUTPUT diff --git a/tools/cpu/sh/sci.c b/tools/cpu/sh/sci.c new file mode 100644 index 0000000000..bc7fdd83a8 --- /dev/null +++ b/tools/cpu/sh/sci.c @@ -0,0 +1,165 @@ +/* + * Copyright (c) 1998 Ralf Corsepius (corsepiu@faw.uni-ulm.de) + * + * See the file COPYING for copyright notice. + */ + +#include +#include +#include + +#include "sci.h" + +/* + n .. baudrate generator source 0,1,2,3 + + N .. BRR setting (0..255) + + Phi .. processor baud rate + + B .. bitrate + */ + +typedef struct sci_tab { + unsigned int B ; + unsigned int n ; + int N ; + double err ; + } sci_tab_t ; + +static unsigned int bitrate [] = { + 50, + 75, + 110, + 134, + 150, + 200, + 300, + 600, + 1200, + 1800, + 2400, + 4800, + 9600, + 19200, + 38400, + 57600, + 115200, + 230400, + 460800 +}; + +static sci_tab_t test_array[4] ; + +static void Compute( + unsigned int n, + unsigned int B, + double Phi, + struct sci_tab *entry ) +{ + int a = ( 32 << ( 2 * n ) ) * B ; + + entry->n = n ; + entry->B = B ; + entry->N = rint( ( Phi / a ) - 1.0 ) ; + + if ( ( entry->N > 0 ) && ( entry->N < 256 ) ) + entry->err = + ( ( Phi / ( (entry->N + 1) * a ) - 1.0 ) * 100.0 ); + else + { + entry->err = 100.0 ; + entry->n = 255 ; + entry->N = 0 ; + } +} + +static sci_tab_t *SelectN( + unsigned int B, + double Phi ) +{ + unsigned int i ; + struct sci_tab* best = NULL ; + + for ( i = 0 ; i < 4 ; i++ ) + { + double err ; + + Compute( i, B, Phi, &test_array[i] ); + err = fabs( test_array[i].err ); + + if ( best ) + { + if ( err < fabs( best->err ) ) + best = &test_array[i] ; + } + else + best = &test_array[i] ; + } + + return best ; +} + +int shgen_gensci( + FILE *file, + double Phi ) /* Processor frequency [Hz] */ +{ + unsigned int i ; + + fprintf( file, + "/*\n * Bitrate table for the serial devices (sci) of the SH at %.3f MHz\n" + " */\n\n", Phi / 1000000.0 ); + fprintf( file, + "/*\n" + " * n .. SMR bits 0,1 : baud rate generator clock source\n" + " * N .. BRR bits 0..7: setting for baud rate generator\n" + " * error .. percentual error to nominal bitrate\n" + " * Hitachi's HW manual recommends bitrates with an error less than 1%%\n" + " * We experienced values less than 2%% to be stable\n" + " */\n\n" ); + fprintf( file, "#include \n\n" ); + fprintf( file, + "static struct sci_bitrate_t {\n" + " unsigned char n ;\n" + " unsigned char N ;\n" + "} _sci_bitrates[] = {\n" + "/* n N error */\n" ); + + for ( i = 0 ; i < sizeof(bitrate)/sizeof(int) ; i++ ) + { + struct sci_tab* best = SelectN( bitrate[i], Phi ); + + if ( i > 0 ) + fprintf( file, ",\n" ); + fprintf( file, " { %1d, %3d } /* %+7.2f%% ; B%d ", + best->n, + best->N, + best->err, + best->B ); + if ( best->n > 3 ) + fprintf( file, "(unusable) " ); + fprintf( file, "*/" ); + } + + fprintf( file, "\n};\n\n" ); + + fprintf( file, + "int _sci_get_brparms( \n" + " tcflag_t cflag,\n" + " unsigned char *smr,\n" + " unsigned char *brr )\n" + "{\n" + " unsigned int offset ;\n\n" + " offset = ( cflag & ( CBAUD & ~CBAUDEX ) )\n" + " + ( ( cflag & CBAUDEX ) ? B38400 : 0 );\n" + " if ( offset == 0 ) return -1 ;\n" + " offset-- ;\n\n" + " if ( _sci_bitrates[offset].n > 3 ) return -1;\n\n" + " *smr &= ~0x03;\n" + " *smr |= _sci_bitrates[offset].n;\n" + " *brr = _sci_bitrates[offset].N;\n\n" + " return 0;\n" + "}\n" ); + + return 0 ; +} diff --git a/tools/cpu/sh/sci.h b/tools/cpu/sh/sci.h new file mode 100644 index 0000000000..b55bbfb670 --- /dev/null +++ b/tools/cpu/sh/sci.h @@ -0,0 +1,11 @@ +#ifndef _shgen_sci_h +#define _shgen_sci_h + +#include + +extern int shgen_gensci( + FILE *file, + double Phi /* Processor frequency [Hz] */ + ); + +#endif diff --git a/tools/cpu/sh/shgen.c b/tools/cpu/sh/shgen.c new file mode 100644 index 0000000000..57f9120e39 --- /dev/null +++ b/tools/cpu/sh/shgen.c @@ -0,0 +1,114 @@ +/* + * Copyright (c) 1998,1999,2000, 2006 Ralf Corsepius, Ulm Germany. + * + * See the file COPYING for copyright notice. + */ + +#include +#include /* strcmp, strerror */ +#include /* exit */ +#include +#include + +#include "sci.h" + +static void usage( FILE* ofile, char *prog ) +{ + fprintf( ofile, "Usage: %s [options] driver\n", prog ); + fprintf( ofile, "\nOptions:\n" ); + fprintf( ofile, "Processor frequency (default 20MHz):\n") ; + fprintf( ofile, "\t-M Phi .. processor frequency [MHz]\n" ); + fprintf( ofile, "\t-K Phi .. processor frequency [KHz]\n" ); + fprintf( ofile, "\t-H Phi .. processor frequency [Hz]\n" ); + fprintf( ofile, "Driver:\n" ); + fprintf( ofile, "\tsci .. bitrate table for sci\n" ); + + fprintf( ofile, "\nWritten by Ralf Corsepius \n" ); + fprintf( ofile, "\nCopyright (c) 1998,1999,2000\tRalf Corsepius\n" ); +} + +#if HAVE_GETOPT_LONG +#define NOARG 0 +#define HASARG 1 +#define OPTARG 2 + +static struct option long_options[] = +{ + { "version", NOARG, NULL, 'v' }, + { "help", NOARG, NULL, 'h' }, + { "mega-hertz", HASARG, NULL, 'M' }, + { "kilo-hertz", HASARG, NULL, 'K' }, + { "hertz", HASARG, NULL, 'H' }, + { 0, 0, 0, 0 } +}; +#endif + +static void shgen_header( FILE *file ) +{ + fprintf( file, + "/*\n * DO NOT EDIT - this file is automatically generated by shgen %s\n", + VERSION ); + fprintf( file, + " * Copyright (c) 1998,1999,2000 Ralf Corsepius (corsepiu@faw.uni-ulm.de)\n */\n" ); + fprintf( file, + "\n/* This file is not copyrighted */\n\n" ); +} + +int main( int argc, char *argv[] ) +{ + double Phi = 20000000.0 ; + +#if HAVE_GETOPT_LONG + int option_index = 0 ; + while( ( optopt = getopt_long( argc, argv, "M:K:H:hv", + long_options, &option_index ) ) > 0 ) +#else + while ( ( optopt = getopt( argc, argv, "M:K:H:hv" ) ) > 0 ) +#endif + { + switch ( optopt ) + { + case 'M' : + sscanf( optarg, "%lf", &Phi ); + Phi = Phi * 1000000.0; + break ; + case 'K' : + sscanf( optarg, "%lf", &Phi ); + Phi = Phi * 1000.0; + break ; + case 'H' : + sscanf( optarg, "%lf", &Phi ); + break ; + case 'h' : + usage( stdout, argv[0] ); + exit(0); + case 'v' : + fprintf( stdout, "%s version %s\n", argv[0], VERSION ); + exit(0); + default : + usage( stderr, argv[0] ); + exit(1); + break ; + } + } + + if ( argc - optind != 1 ) + { + fprintf( stderr, "%s: Missing argument: driver\n", argv[0] ); + exit(1); + } + + shgen_header( stdout ); + + if ( strcmp( argv[optind], "sci" ) == 0 ) + { + shgen_gensci( stdout, Phi ); + } + else + { + fprintf( stderr, "%s: Invalid argument: driver\n", argv[0] ); + exit(1); + } + + return 0 ; +} -- cgit v1.2.3