[ 2821545 ] IXP465 support (TedM)
git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1670 b68d4a1b-bc3d-0410-92ed-d4ac073336b7master
Arnim Läuger
15 years ago
parent
02e1e6d4ca
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4b48e26b58
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#
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# $Id$
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#
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# Copyright (C) 2002 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 Christian Pellegrin <chri@ascensit.com>, 2003.
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#
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# bits 31-28 of the Device Identification Register
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0001 ixp465 A0
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0010 ixp465 B0
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File diff suppressed because it is too large
Load Diff
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/*
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* $Id$
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*
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* Copyright (C) 2002 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 Christian Pellegrin <chri@ascensit.com>, 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 "sysdep.h"
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#include <stdlib.h>
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#include <stdint.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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#include "jtag.h"
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#include "buses.h"
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#include "generic_bus.h"
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typedef struct {
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urj_part_signal_t *ex_cs[8];
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urj_part_signal_t *ex_addr[24];
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urj_part_signal_t *ex_data[16];
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urj_part_signal_t *ex_wr;
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urj_part_signal_t *ex_rd;
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} bus_params_t;
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#define ex_cs_n ((bus_params_t *) bus->params)->ex_cs
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#define ex_addr ((bus_params_t *) bus->params)->ex_addr
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#define ex_data ((bus_params_t *) bus->params)->ex_data
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#define ex_wr_n ((bus_params_t *) bus->params)->ex_wr
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#define ex_rd_n ((bus_params_t *) bus->params)->ex_rd
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/**
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* bus->driver->(*new_bus)
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*
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*/
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static urj_bus_t *
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ixp465_bus_new (urj_chain_t *chain,
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const urj_bus_driver_t *driver,
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const urj_param_t *cmd_params[])
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{
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urj_bus_t *bus;
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urj_part_t *part;
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char buff[15];
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int i;
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int failed = 0;
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// bus = calloc( 1, sizeof (urj_bus_t) );
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// if (!bus)
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// return NULL;
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// bus->driver = driver;
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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 = part = chain->parts->parts[chain->active_part];
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bus = urj_bus_generic_new (chain, driver, sizeof (bus_params_t));
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if (bus == NULL)
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return NULL;
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part = bus->part;
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for (i = 0; i < 8; i++) {
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sprintf (buff, "ex_cs_n_%d", i);
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failed |= urj_bus_generic_attach_sig (part, &(ex_cs_n[i]), buff);
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}
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for (i = 0; i < 24; i++) {
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sprintf (buff, "ex_addr_%d", i);
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failed |= urj_bus_generic_attach_sig (part, &(ex_addr[i]), buff);
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}
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for (i = 0; i < 16; i++) {
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sprintf (buff, "ex_data_%d", i);
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failed |= urj_bus_generic_attach_sig (part, &(ex_data[i]), buff);
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}
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failed |= urj_bus_generic_attach_sig (part, &(ex_wr_n), "ex_wr_n");
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failed |= urj_bus_generic_attach_sig (part, &(ex_rd_n), "ex_rd_n");
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if (failed) {
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urj_bus_generic_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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/**
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* bus->driver->(*printinfo)
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*
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*/
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static void
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ixp465_bus_printinfo (urj_log_level_t ll, urj_bus_t *bus)
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{
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int i;
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for (i = 0; i < bus->chain->parts->len; i++)
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if (bus->part == bus->chain->parts->parts[i])
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break;
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urj_log (ll, _("Intel IXP465 compatible bus driver (JTAG part No. %d)\n"),
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i);
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}
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/**
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* bus->driver->(*area)
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*
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*/
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static int
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ixp465_bus_area (urj_bus_t *bus, uint32_t adr, urj_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 (0x100000000);
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area->width = 16;
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return URJ_STATUS_OK;
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}
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static void
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select_flash (urj_bus_t *bus)
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{
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//urj_part_t *p = PART;
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urj_part_t *p = bus->part;
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urj_part_set_signal (p, ex_cs_n[0], 1, 0);
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urj_part_set_signal (p, ex_cs_n[1], 1, 1);
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urj_part_set_signal (p, ex_cs_n[2], 1, 1);
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urj_part_set_signal (p, ex_cs_n[3], 1, 1);
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urj_part_set_signal (p, ex_cs_n[4], 1, 1);
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urj_part_set_signal (p, ex_cs_n[5], 1, 1);
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urj_part_set_signal (p, ex_cs_n[6], 1, 1);
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urj_part_set_signal (p, ex_cs_n[7], 1, 1);
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}
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static void
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unselect_flash (urj_bus_t *bus)
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{
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urj_part_t *p = bus->part;
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urj_part_set_signal (p, ex_cs_n[0], 1, 1);
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urj_part_set_signal (p, ex_cs_n[1], 1, 1);
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urj_part_set_signal (p, ex_cs_n[2], 1, 1);
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urj_part_set_signal (p, ex_cs_n[3], 1, 1);
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urj_part_set_signal (p, ex_cs_n[4], 1, 1);
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urj_part_set_signal (p, ex_cs_n[5], 1, 1);
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urj_part_set_signal (p, ex_cs_n[6], 1, 1);
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urj_part_set_signal (p, ex_cs_n[7], 1, 1);
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}
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static void
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setup_address (urj_bus_t *bus, uint32_t a)
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{
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int i;
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urj_part_t *p = bus->part;
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for (i = 0; i < 24; i++)
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urj_part_set_signal (p, ex_addr[i], 1, (a >> i) & 1);
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}
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static void
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set_data_in (urj_bus_t *bus)
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{
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int i;
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urj_part_t *p = bus->part;
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for (i = 0; i < 16; i++)
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urj_part_set_signal (p, ex_data[i], 0, 0);
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}
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static void
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setup_data (urj_bus_t *bus, uint32_t d)
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{
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int i;
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urj_part_t *p = bus->part;
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for (i = 0; i < 16; i++)
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urj_part_set_signal (p, ex_data[i], 1, (d >> i) & 1);
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}
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/**
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* bus->driver->(*read_start)
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*
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*/
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static int
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ixp465_bus_read_start (urj_bus_t *bus, uint32_t adr)
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{
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urj_part_t *p = bus->part;
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urj_chain_t *chain = bus->chain;
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select_flash( bus );
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urj_part_set_signal (p, ex_rd_n, 1, 0);
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urj_part_set_signal (p, ex_wr_n, 1, 1);
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setup_address (bus, adr);
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set_data_in (bus);
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urj_tap_chain_shift_data_registers (chain, 0);
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return URJ_STATUS_OK;
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}
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/**
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* bus->driver->(*read_next)
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*
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*/
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static uint32_t
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ixp465_bus_read_next (urj_bus_t *bus, uint32_t adr)
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{
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urj_part_t *p = bus->part;
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urj_chain_t *chain = bus->chain;
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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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urj_tap_chain_shift_data_registers (chain, 1);
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for (i = 0; i < 16; i++)
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d |= (uint32_t) (urj_part_get_signal (p, ex_data[i] ) << i);
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return d;
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}
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/**
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* bus->driver->(*read_end)
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*
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*/
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static uint32_t
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ixp465_bus_read_end (urj_bus_t *bus)
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{
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urj_part_t *p = bus->part;
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urj_chain_t *chain = bus->chain;
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int i;
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uint32_t d = 0;
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unselect_flash (bus);
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urj_part_set_signal (p, ex_rd_n, 1, 1);
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urj_part_set_signal (p, ex_wr_n, 1, 1);
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urj_tap_chain_shift_data_registers (chain, 1);
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for (i = 0; i < 16; i++)
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d |= (uint32_t) (urj_part_get_signal (p, ex_data[i] ) << i);
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return d;
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}
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/**
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* bus->driver->(*write)
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*
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*/
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static void
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ixp465_bus_write (urj_bus_t *bus, uint32_t adr, uint32_t data)
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{
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urj_part_t *p = bus->part;
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urj_chain_t *chain = bus->chain;
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select_flash (bus);
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urj_part_set_signal (p, ex_rd_n, 1, 1);
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setup_address (bus, adr);
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setup_data (bus, data);
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urj_tap_chain_shift_data_registers (chain, 0);
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urj_part_set_signal (p, ex_wr_n, 1, 0);
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urj_tap_chain_shift_data_registers (chain, 0);
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urj_part_set_signal (p, ex_wr_n, 1, 1);
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unselect_flash (bus);
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urj_tap_chain_shift_data_registers (chain, 0);
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}
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const urj_bus_driver_t urj_bus_ixp465_bus = {
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"ixp465",
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N_("Intel IXP465 compatible bus driver via BSR"),
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ixp465_bus_new,
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urj_bus_generic_free,
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ixp465_bus_printinfo,
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urj_bus_generic_prepare_extest,
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ixp465_bus_area,
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ixp465_bus_read_start,
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ixp465_bus_read_next,
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ixp465_bus_read_end,
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urj_bus_generic_read,
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ixp465_bus_write,
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urj_bus_generic_no_init
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};
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