2003-12-20 Marcel Telka <marcel@telka.sk>
* src/bus/Makefile.am (libbus_a_SOURCES): Added au1500.c. * src/bus/au1500.c: New file (patch 853883, Zhang Wei). * src/bus/buses.c (bus_drivers): Added au1500_bus (patch 853883, Zhang Wei). * src/bus/buses.h: Added au1500_bus. git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@590 b68d4a1b-bc3d-0410-92ed-d4ac073336b7master
Marcel Telka
21 years ago
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/*
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* $Id$
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*
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* Copyright (C) 2003 BLXCPU co. Ltd.
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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 ZHANG WEI <zwblue@sohu.com>, 2003
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*
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* Documentation:
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* [1] AMD, "AMD Alchemy Solutions AU1500 Processor Data Book -
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* Preliminary Information", June 2003, Publication ID: 30361B
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*
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*/
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#include "sysdep.h"
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#include <string.h>
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#include <stdint.h>
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#include <stdlib.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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#include "jtag.h"
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#include "buses.h"
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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 *rad[32];
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signal_t *nrcs[4];
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signal_t *nrwe;
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signal_t *nroe;
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signal_t *rd[32];
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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 RAD ((bus_params_t *) bus->params)->rad
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#define nRCS ((bus_params_t *) bus->params)->nrcs
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#define nRWE ((bus_params_t *) bus->params)->nrwe
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#define nROE ((bus_params_t *) bus->params)->nroe
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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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for( i = 0; i < 32; i++)
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part_set_signal( p, RAD[i], 1, (a >>i) & 1);
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}
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static int au1500_bus_area(bus_t * bus, uint32_t addr, bus_area_t * area);
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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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bus_area_t area;
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au1500_bus_area( bus, 0, &area);
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for( i = 0; i < area.width; i++ )
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part_set_signal( p, RD[i], 0, 0 );
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}
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static uint32_t
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get_data_out( 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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bus_area_t area;
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uint32_t d = 0;
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au1500_bus_area( bus, 0, &area);
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for( i = 0; i < area.width; i++ )
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d |= (uint32_t)(part_get_signal( p, RD[i] ) << i);
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return d;
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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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bus_area_t area;
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au1500_bus_area( bus, 0, &area);
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for( i = 0; i < area.width; i++ )
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part_set_signal( p, RD[i], 1, ( d>>i ) & 1 );
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}
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static bus_t *au1500_bus_new(void)
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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 <= chain->active_part || chain->active_part < 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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bus->driver = &au1500_bus;
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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[chain->active_part];
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for(i=0; i<32; i++){
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sprintf( buff, "RAD%d", i);
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RAD[i] = part_find_signal( PART, buff);
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if(!RAD[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, "RCE_N%d", i);
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nRCS[i] = part_find_signal( PART, buff);
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if(!nRCS[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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nRWE = part_find_signal( PART, "RWE_N" );
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if (!nRWE) {
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printf( _("signal '%s' not found\n"), "RWE_N" );
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failed = 1;
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}
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nROE = part_find_signal( PART, "ROE_N" );
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if (!nROE) {
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printf( _("signal '%s' not found\n"), "ROE_N" );
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failed = 1;
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}
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for(i=0; i<32; i++){
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sprintf( buff, "RD%d", i);
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RD[i] = part_find_signal( PART, buff);
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if(!RD[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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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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static int
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au1500_bus_area(bus_t *bus, uint32_t addr, bus_area_t *area)
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{
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area->description = NULL;
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area->start = UINT32_C(0x00000000);
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area->length = UINT64_C(0x00100000000);
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// area->width = 16;
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area->width = part_get_signal( PART, part_find_signal( PART, "ROMSIZ" ) ) ? 16 : 32;
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return 0;
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}
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static void
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au1500_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 void
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au1500_bus_printinfo( bus_t *bus)
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{
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int i;
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for (i = 0; i < CHAIN->parts->len; i++)
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if (PART == CHAIN->parts->parts[i])
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break;
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printf( _("AU1500 compatible bus driver via BSR (JTAG part No. %d)\n"), i );
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}
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static void
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au1500_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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au1500_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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chain_t *chain = CHAIN;
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part_set_signal( p, nRCS[0], 1, 0 );
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part_set_signal( p, nRCS[1], 1, 1 );
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part_set_signal( p, nRCS[2], 1, 1 );
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part_set_signal( p, nRCS[3], 1, 1 );
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part_set_signal( p, nRWE, 1, 1 );
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part_set_signal( p, nROE, 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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au1500_bus_read_next( bus_t *bus, uint32_t adr )
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{
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chain_t *chain = CHAIN;
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setup_address( bus, adr );
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chain_shift_data_registers( chain, 1 );
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return get_data_out( bus );
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}
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static uint32_t
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au1500_bus_read_end( bus_t *bus )
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{
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part_t *p = PART;
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chain_t *chain = CHAIN;
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part_set_signal( p, nRCS[0], 1, 1 );
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part_set_signal( p, nRCS[1], 1, 1 );
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part_set_signal( p, nRCS[2], 1, 1 );
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part_set_signal( p, nRCS[3], 1, 1 );
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part_set_signal( p, nRWE, 1, 1 );
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part_set_signal( p, nROE, 1, 1 );
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chain_shift_data_registers( chain, 1 );
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return get_data_out( bus );
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}
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static uint32_t
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au1500_bus_read( bus_t *bus, uint32_t adr )
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{
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au1500_bus_read_start( bus, adr );
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return au1500_bus_read_end( bus );
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}
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static void
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au1500_bus_write( bus_t *bus, uint32_t adr, uint32_t data )
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{
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part_t *p = PART;
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chain_t *chain = CHAIN;
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part_set_signal( p, nRCS[0], 1, 0 );
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part_set_signal( p, nRCS[1], 1, 1 );
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part_set_signal( p, nRCS[2], 1, 1 );
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part_set_signal( p, nRCS[3], 1, 1 );
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part_set_signal( p, nRWE, 1, 1 );
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part_set_signal( p, nROE, 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, nRWE, 1, 0 );
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chain_shift_data_registers( chain, 0 );
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part_set_signal( p, nRWE, 1, 1);
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part_set_signal( p, nROE, 1, 1);
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part_set_signal( p, nRCS[0], 1, 1);
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part_set_signal( p, nRCS[1], 1, 1 );
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part_set_signal( p, nRCS[2], 1, 1 );
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part_set_signal( p, nRCS[3], 1, 1 );
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chain_shift_data_registers( chain, 0);
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}
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const bus_driver_t au1500_bus = {
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"au1500",
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N_("AU1500 BUS Driver via BSR"),
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au1500_bus_new,
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au1500_bus_free,
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au1500_bus_printinfo,
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au1500_bus_prepare,
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au1500_bus_area,
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au1500_bus_read_start,
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au1500_bus_read_next,
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au1500_bus_read_end,
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au1500_bus_read,
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au1500_bus_write
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};
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