[ 2821604 ] Bus driver for SHARC21369-EZKIT (MURANAKA Masaki)
git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1687 b68d4a1b-bc3d-0410-92ed-d4ac073336b7master
Arnim Läuger
15 years ago
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de37a2b847
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/*
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* $Id$
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*
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* Analog Device's SHARC 21369 compatible bus driver via BSR
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* Copyright (C) 2009- Monami Software Limited Partnership, JAPAN.
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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 Masaki Muranaka <monaka at monami-software.com>
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* Original version written by Ajith Kumar P.C <ajithpc@kila.com>
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*
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* Documentation:
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* [1] Analog Devices Inc.,"ADSP-21369 SHARC Technical Reference", September 1998
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* [2] Analog Devices Inc.,"ADSP-21369 SHARC User's Manual", September 1998
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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 <urjtag/chain.h>
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#include <urjtag/part.h>
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#include <urjtag/bus.h>
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#include <urjtag/bssignal.h>
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#include "buses.h"
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#include "generic_bus.h"
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//no SDRAM access
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typedef struct {
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uint32_t last_adr;
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urj_part_signal_t *addr[24];
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urj_part_signal_t *data[32];
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urj_part_signal_t *ms0; //boot memory select
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urj_part_signal_t *ms1; //boot memory select
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urj_part_signal_t *nwe;
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urj_part_signal_t *nrd;
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} bus_params_t;
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#define LAST_ADR ((bus_params_t *) bus->params)->last_adr
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#define ADDR ((bus_params_t *) bus->params)->addr
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#define DATA ((bus_params_t *) bus->params)->data
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#define MS0 ((bus_params_t *) bus->params)->ms0
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#define MS1 ((bus_params_t *) bus->params)->ms1
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#define nWE ((bus_params_t *) bus->params)->nwe
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#define nRD ((bus_params_t *) bus->params)->nrd
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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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sharc_21369_bus_new (urj_chain_t *chain, 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 = 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 < 24; i++) {
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sprintf( buff, "ADDR%d", i );
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failed |= urj_bus_generic_attach_sig (part, &(ADDR[i]), buff);
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}
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for (i = 0; i < 32; i++) {
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sprintf( buff, "DATA%d", i );
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failed |= urj_bus_generic_attach_sig( part, &(DATA[i]), buff );
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}
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failed |= urj_bus_generic_attach_sig( part, &(MS0), "MS0_B" );
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failed |= urj_bus_generic_attach_sig( part, &(MS1), "MS1_B" );
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failed |= urj_bus_generic_attach_sig( part, &(nWE), "WR_B" );
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failed |= urj_bus_generic_attach_sig( part, &(nRD), "RD_B" );
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if (failed)
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{
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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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sharc_21369_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, _("Analog Device's SHARC 21369 compatible bus driver via BSR (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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sharc_21369_ezkit_bus_area ( urj_bus_t *bus, uint32_t adr, urj_bus_area_t *area)
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{
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urj_part_t *p = bus->part;
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if (UINT32_C(0x200000) <= adr && adr <= UINT32_C(0x027FFFF))
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{
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area->description = N_("Boot Memory Select");
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area->start = UINT32_C(0x200000);
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area->length = UINT64_C(0x080000);
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area->width = 8;
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urj_part_set_signal( p, MS0, 1, 1);
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urj_part_set_signal( p, MS1, 1, 0);
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}
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else
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{
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area->description = NULL;
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area->start = UINT32_C(0xffffffff);
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area->length = UINT64_C(0x080000);
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area->width = 0;
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urj_part_set_signal(p, MS0, 1, 1);
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urj_part_set_signal(p, MS1, 1, 1);
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}
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return URJ_STATUS_OK;
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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, 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, uint32_t adr)
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{
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int i;
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urj_part_t *p = bus->part;
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urj_bus_area_t area;
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bus->driver->area (bus, adr, &area);
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for (i = 0; i < area.width; i++)
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urj_part_set_signal( p, 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 adr, 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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urj_bus_area_t area;
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bus->driver->area (bus, adr, &area);
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for (i = 0; i < area.width; i++)
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urj_part_set_signal(p, 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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sharc_21369_bus_read_start (urj_bus_t *bus, uint32_t adr)
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{
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urj_chain_t *chain = bus->chain;
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urj_part_t *p = bus->part;
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urj_bus_area_t area;
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bus->driver->area (bus, adr, &area);
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LAST_ADR = adr;
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urj_part_set_signal (p, nWE, 1, 1);
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urj_part_set_signal (p, nRD, 1, 0);
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setup_address (bus, adr);
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set_data_in (bus, adr);
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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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sharc_21369_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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uint32_t d = 0;
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int i;
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urj_bus_area_t area;
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LAST_ADR = adr;
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bus->driver->area (bus, adr, &area);
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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 < area.width; i++)
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d |= (uint32_t) (urj_part_get_signal (p, 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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sharc_21369_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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urj_bus_area_t area;
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bus->driver->area (bus, LAST_ADR, &area);
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urj_part_set_signal (p, nWE, 1, 1);
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urj_part_set_signal (p, nRD, 1, 1);
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urj_tap_chain_shift_data_registers (chain, 1);
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for (i = 0; i < area.width; i++)
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d |= (uint32_t) (urj_part_get_signal (p, 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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sharc_21369_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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urj_bus_area_t area;
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bus->driver->area (bus, adr, &area);
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urj_part_set_signal (p, nWE, 1, 1);
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urj_part_set_signal (p, nRD, 1, 1);
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setup_address (bus, adr);
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setup_data (bus, adr, data);
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urj_tap_chain_shift_data_registers (chain, 0);
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urj_part_set_signal (p, nWE, 1, 0);
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urj_tap_chain_shift_data_registers (chain, 0);
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urj_part_set_signal (p, nWE, 1, 1);
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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_sharc_21369_ezkit_bus = {
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"SHARC_21369_EZKIT",
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N_("SHARC_21369 EZ-KIT bus driver via BSR"),
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sharc_21369_bus_new,
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urj_bus_generic_free,
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sharc_21369_bus_printinfo,
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urj_bus_generic_prepare_extest,
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sharc_21369_ezkit_bus_area,
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sharc_21369_bus_read_start,
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sharc_21369_bus_read_next,
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sharc_21369_bus_read_end,
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urj_bus_generic_read,
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sharc_21369_bus_write,
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urj_bus_generic_no_init
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};
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