2003-05-26 Marcel Telka <marcel@telka.sk>
* include/bus.h (new_sh7727_bus): Added function declaration. * src/cmd/detect.c (cmd_detect_run): Added bus driver for Hitachi SH7727. * src/bus/Makefile.am (libbus_a_SOURCES): Added sh7727.c (patch 743140, Matan Ziv-Av). * src/bus/sh7727.c: New file (based on patch 743140, Matan Ziv-Av). git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@445 b68d4a1b-bc3d-0410-92ed-d4ac073336b7master
Marcel Telka
22 years ago
parent
1bae12bb3b
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127719f423
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/*
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* $Id$
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*
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* Copyright (C) 2003 ETC s.r.o.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Written by Matan Ziv-Av <matan@svgalib.org>, 2003.
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* Modified by Marcel Telka <marcel@telka.sk>, 2003.
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*
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*/
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#include <config.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "part.h"
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#include "bus.h"
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#include "chain.h"
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#include "bssignal.h"
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#define BASE 0x1000000
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typedef struct {
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chain_t *chain;
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part_t *part;
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signal_t *a[26];
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signal_t *d[32];
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signal_t *cs[6];
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signal_t *we[4];
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signal_t *rdwr;
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signal_t *rd;
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} bus_params_t;
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#define CHAIN ((bus_params_t *) bus->params)->chain
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#define PART ((bus_params_t *) bus->params)->part
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#define A ((bus_params_t *) bus->params)->a
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#define D ((bus_params_t *) bus->params)->d
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#define CS ((bus_params_t *) bus->params)->cs
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#define WE ((bus_params_t *) bus->params)->we
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#define RDWR ((bus_params_t *) bus->params)->rdwr
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#define RD ((bus_params_t *) bus->params)->rd
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static void
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setup_address( bus_t *bus, uint32_t a )
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{
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int i;
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part_t *p = PART;
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a += BASE;
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for (i = 0; i < 26; i++)
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part_set_signal( p, A[i], 1, (a >> i) & 1 );
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}
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static void
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set_data_in( bus_t *bus )
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{
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int i;
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part_t *p = PART;
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for (i = 0; i < 32; i++)
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part_set_signal( p, D[i], 0, 0 );
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}
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static void
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setup_data( bus_t *bus, uint32_t d )
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{
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int i;
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part_t *p = PART;
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for (i = 0; i < 32; i++)
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part_set_signal( p, D[i], 1, (d >> i) & 1 );
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}
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static void
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sh7727_bus_prepare( bus_t *bus )
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{
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part_set_instruction( PART, "EXTEST" );
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chain_shift_instructions( CHAIN );
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}
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static void
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sh7727_bus_read_start( bus_t *bus, uint32_t adr )
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{
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part_t *p = PART;
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int cs[8];
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int i;
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for (i = 0; i < 8; i++)
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cs[i] = 1;
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cs[(adr & 0x1C000000) >> 26] = 0;
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part_set_signal( p, CS[0], 1, cs[0] );
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part_set_signal( p, CS[2], 1, cs[2] );
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part_set_signal( p, CS[3], 1, cs[3] );
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part_set_signal( p, CS[4], 1, cs[4] );
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part_set_signal( p, CS[5], 1, cs[5] );
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part_set_signal( p, CS[6], 1, cs[6] );
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part_set_signal( p, RDWR, 1, 1 );
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part_set_signal( p, WE[0], 1, 1 );
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part_set_signal( p, WE[1], 1, 1 );
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part_set_signal( p, WE[2], 1, 1 );
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part_set_signal( p, WE[3], 1, 1 );
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part_set_signal( p, RD, 1, 0 );
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setup_address( bus, adr );
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set_data_in( bus );
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chain_shift_data_registers( CHAIN, 0 );
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}
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static uint32_t
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sh7727_bus_read_next( bus_t *bus, uint32_t adr )
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{
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part_t *p = PART;
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int i;
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uint32_t d = 0;
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setup_address( bus, adr );
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chain_shift_data_registers( CHAIN, 1 );
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for (i = 0; i < 32; i++)
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d |= (uint32_t) (part_get_signal( p, D[i] ) << i);
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return d;
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}
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static uint32_t
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sh7727_bus_read_end( bus_t *bus )
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{
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part_t *p = PART;
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int cs[8];
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int i;
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uint32_t d = 0;
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for (i = 0; i < 8; i++)
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cs[i] = 1;
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part_set_signal( p, CS[0], 1, cs[0] );
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part_set_signal( p, CS[2], 1, cs[2] );
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part_set_signal( p, CS[3], 1, cs[3] );
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part_set_signal( p, CS[4], 1, cs[4] );
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part_set_signal( p, CS[5], 1, cs[5] );
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part_set_signal( p, CS[6], 1, cs[6] );
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part_set_signal( p, RD, 1, 1 );
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chain_shift_data_registers( CHAIN, 1 );
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for (i = 0; i < 32; i++)
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d |= (uint32_t) (part_get_signal( p, D[i] ) << i);
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return d;
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}
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static uint32_t
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sh7727_bus_read( bus_t *bus, uint32_t adr )
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{
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sh7727_bus_read_start( bus, adr );
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return sh7727_bus_read_end( bus );
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}
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static void
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sh7727_bus_write( bus_t *bus, uint32_t adr, uint32_t data )
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{
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chain_t *chain = CHAIN;
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part_t *p = PART;
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int cs[8];
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int i;
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for (i = 0; i < 8 ; i++)
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cs[i] = 1;
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cs[(adr & 0x1C000000) >> 26] = 0;
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part_set_signal( p, CS[0], 1, cs[0] );
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part_set_signal( p, CS[2], 1, cs[2] );
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part_set_signal( p, CS[3], 1, cs[3] );
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part_set_signal( p, CS[4], 1, cs[4] );
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part_set_signal( p, CS[5], 1, cs[5] );
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part_set_signal( p, CS[6], 1, cs[6] );
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part_set_signal( p, RDWR, 1, 0 );
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part_set_signal( p, WE[0], 1, 1 );
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part_set_signal( p, WE[1], 1, 1 );
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part_set_signal( p, WE[2], 1, 1 );
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part_set_signal( p, WE[3], 1, 1 );
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part_set_signal( p, RD, 1, 1 );
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setup_address( bus, adr );
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setup_data( bus, data );
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chain_shift_data_registers( chain, 0 );
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part_set_signal( p, WE[0], 1, 0 );
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part_set_signal( p, WE[1], 1, 0 );
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part_set_signal( p, WE[2], 1, 0 );
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part_set_signal( p, WE[3], 1, 0 );
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chain_shift_data_registers( chain, 0 );
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part_set_signal( p, WE[0], 1, 1 );
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part_set_signal( p, WE[1], 1, 1 );
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part_set_signal( p, WE[2], 1, 1 );
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part_set_signal( p, WE[3], 1, 1 );
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chain_shift_data_registers( chain, 0 );
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}
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static int
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sh7727_bus_width( bus_t *bus, uint32_t adr )
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{
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return 16;
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}
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static void
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sh7727_bus_free( bus_t *bus )
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{
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free( bus->params );
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free( bus );
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}
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static const bus_t sh7727_bus = {
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NULL,
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sh7727_bus_prepare,
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sh7727_bus_width,
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sh7727_bus_read_start,
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sh7727_bus_read_next,
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sh7727_bus_read_end,
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sh7727_bus_read,
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sh7727_bus_write,
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sh7727_bus_free
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};
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bus_t *
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new_sh7727_bus( chain_t *chain, int pn )
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{
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bus_t *bus;
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char buff[10];
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int i;
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int failed = 0;
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if (!chain || !chain->parts || chain->parts->len <= pn || pn < 0)
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return NULL;
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bus = malloc( sizeof (bus_t) );
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if (!bus)
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return NULL;
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memcpy( bus, &sh7727_bus, sizeof (bus_t) );
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bus->params = calloc( 1, sizeof (bus_params_t) );
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if (!bus->params) {
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free( bus );
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return NULL;
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}
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CHAIN = chain;
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PART = chain->parts->parts[pn];
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for (i = 0; i < 26; i++) {
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sprintf( buff, "A%d", i );
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A[i] = part_find_signal( PART, buff );
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if (!A[i]) {
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printf( _("signal '%s' not found\n"), buff );
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failed = 1;
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break;
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}
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}
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for (i = 0; i < 32; i++) {
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sprintf( buff, "D%d", i );
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D[i] = part_find_signal( PART, buff );
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if (!D[i]) {
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printf( _("signal '%s' not found\n"), buff );
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failed = 1;
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break;
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}
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}
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for (i = 0; i < 6; i++) {
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sprintf( buff, "CS%d", i );
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CS[i] = part_find_signal( PART, buff );
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if (!CS[i]) {
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printf( _("signal '%s' not found\n"), buff );
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failed = 1;
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break;
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}
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}
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for (i = 0; i < 4; i++) {
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sprintf( buff, "WE%d", i );
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WE[i] = part_find_signal( PART, buff );
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if (!WE[i]) {
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printf( _("signal '%s' not found\n"), buff );
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failed = 1;
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break;
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}
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}
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RDWR = part_find_signal( PART, "RDWR" );
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if (!RDWR) {
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printf( _("signal '%s' not found\n"), "RDWR" );
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failed = 1;
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}
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RD = part_find_signal( PART, "RD" );
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if (!RD) {
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printf( _("signal '%s' not found\n"), "RD" );
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failed = 1;
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}
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if (failed) {
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free( bus->params );
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free( bus );
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return NULL;
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}
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return bus;
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}
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