[ 2770421 ] Patch: Support for IXP43x (Florian Boor)
without jtag description files git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1599 b68d4a1b-bc3d-0410-92ed-d4ac073336b7master
Arnim Läuger
16 years ago
parent
e66ca022bd
commit
e68bf276bd
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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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* Adapted for IXP43x by Florian Boor <florian@kernelconcepts.de>, 2009.
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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/part.h>
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#include <urjtag/bus.h>
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#include <urjtag/chain.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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typedef struct {
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urj_part_signal_t *ex_cs[4];
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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 ((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 ((bus_params_t *) bus->params)->ex_wr
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#define EX_RD ((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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ixp435_bus_new (urj_chain_t *chain, const urj_bus_driver_t *driver,
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char *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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{
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urj_error_set (URJ_ERROR_OUT_OF_MEMORY, "calloc(%zd,%zd) fails",
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1, sizeof (urj_bus_t));
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return NULL;
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}
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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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{
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free (bus);
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urj_error_set (URJ_ERROR_OUT_OF_MEMORY, "calloc(%zd,%zd) fails",
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1, sizeof (bus_params_t));
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return NULL;
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}
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bus->chain = chain;
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bus->part = part = chain->parts->parts[chain->active_part];
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for (i = 0; i < 4; 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[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), "ex_wr_n");
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failed |= urj_bus_generic_attach_sig (part, &(EX_RD), "ex_rd_n");
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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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/**
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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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ixp435_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 IXP435 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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ixp435_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 = bus->part;
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urj_part_set_signal (p, EX_CS[0], 1, 0);
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urj_part_set_signal (p, EX_CS[1], 1, 1);
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urj_part_set_signal (p, EX_CS[2], 1, 1);
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urj_part_set_signal (p, EX_CS[3], 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[0], 1, 1);
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urj_part_set_signal (p, EX_CS[1], 1, 1);
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urj_part_set_signal (p, EX_CS[2], 1, 1);
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urj_part_set_signal (p, EX_CS[3], 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 void
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ixp435_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, 1, 0);
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urj_part_set_signal (p, EX_WR, 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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}
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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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ixp435_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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ixp435_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, 1, 1);
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urj_part_set_signal (p, EX_WR, 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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ixp435_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, 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, 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, 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_ixp435_bus = {
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"ixp435",
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N_("Intel IXP435 compatible bus driver"),
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ixp435_bus_new,
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urj_bus_generic_free,
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ixp435_bus_printinfo,
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urj_bus_generic_prepare_extest,
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ixp435_bus_area,
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ixp435_bus_read_start,
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ixp435_bus_read_next,
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ixp435_bus_read_end,
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urj_bus_generic_read,
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ixp435_bus_write,
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urj_bus_generic_no_init
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};
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