freescale mpc837x bus driver and related jtag descriptions (Andrzej Jalowiecki)
git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1738 b68d4a1b-bc3d-0410-92ed-d4ac073336b7master
Arnim Läuger
15 years ago
parent
a07667ffb7
commit
62dd43dd79
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#
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# $Id: STEPPINGS
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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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# Documentation:
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# [1] Freescale, "Freescale MPC837x Users Guide"
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#
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# bits 31-28 of the Device Identification Register
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0000 mpc8377 0
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0010 mpc8377 A
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#
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# $Id: STEPPINGS
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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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# Documentation:
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# [1] Freescale, "Freescale MPC837x Users Guide"
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#
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# bits 31-28 of the Device Identification Register
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0000 mpc8378 0
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0010 mpc8378 A
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File diff suppressed because it is too large
Load Diff
@ -0,0 +1,25 @@
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#
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# $Id: STEPPINGS
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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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# Documentation:
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# [1] Freescale, "Freescale MPC837x Users Guide"
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#
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# bits 31-28 of the Device Identification Register
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0000 mpc8379 0
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0010 mpc8379 A
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File diff suppressed because it is too large
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@ -0,0 +1,525 @@
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/*
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* Freescale MPC837X compatible bus driver via BSR
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* Copyright (C) 2010 Andrzej Jalowiecki
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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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*
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* Documentation:
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* [1] Freescale, "Freescale MPC837x Users Guide"
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* Order Number: MPC8379UG
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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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#define LBC_NUM_LCS 4
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#define LBC_NUM_LWE 4
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#define LBC_NUM_LAD 32
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typedef struct {
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uint32_t last_adr;
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urj_part_signal_t *nlcs[LBC_NUM_LCS];
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urj_part_signal_t *lad[LBC_NUM_LAD];
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urj_part_signal_t *la[LBC_NUM_LAD];
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urj_part_signal_t *nlwe[LBC_NUM_LWE];
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urj_part_signal_t *nloe;
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urj_part_signal_t *ale;
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urj_part_signal_t *lbctl;
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int lbc_muxed;
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int lbc_num_ad;
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int lbc_num_d;
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} bus_params_t;
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#define LAST_ADR ((bus_params_t *) bus->params)->last_adr/* Last used address */
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#define nCS ((bus_params_t *) bus->params)->nlcs /* Chipselect# */
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#define nWE ((bus_params_t *) bus->params)->nlwe /* Write enable# */
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#define nOE ((bus_params_t *) bus->params)->nloe /* Output enable# */
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#define ALE ((bus_params_t *) bus->params)->ale /* Addres strobe */
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#define BCTL ((bus_params_t *) bus->params)->lbctl /* Write /Read# */
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#define LAD ((bus_params_t *) bus->params)->lad /* Addres/Data Bus Mux */
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#define LA ((bus_params_t *) bus->params)->la /* Addres Bus nonMux */
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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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mpc837x_bus_new( urj_chain_t *chain, const urj_bus_driver_t *driver, const urj_param_t *cmd_params[] )
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{
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urj_bus_t *bus;
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bus_params_t *bp;
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urj_part_t *part;
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char buff[10];
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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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bp = bus->params;
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/* default values */
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bp->lbc_muxed = 0;
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bp->lbc_num_d = 8;
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bp->lbc_num_ad = 25;
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for (i = 0; cmd_params[i] != NULL; i++)
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{
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switch (cmd_params[i]->key)
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{
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case URJ_BUS_PARAM_KEY_HELP:
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urj_bus_generic_free (bus);
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urj_log (URJ_LOG_LEVEL_NORMAL,
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_("Usage: initbus mpc837x [mux] [width=WIDTH]\n" \
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" MUX multiplexed data bus (default no)\n" \
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" WIDTH data bus width - 8, 16, 32 (default 8)\n"));
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return NULL;
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case URJ_BUS_PARAM_KEY_MUX:
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bp->lbc_muxed = 1;
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break;
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case URJ_BUS_PARAM_KEY_WIDTH:
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switch (cmd_params[i]->value.lu)
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{
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case 8:
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bp->lbc_num_d = 8;
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break;
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case 16:
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bp->lbc_num_d = 16;
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break;
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case 32:
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bp->lbc_num_d = 32;
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break;
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default:
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urj_error_set (URJ_ERROR_UNSUPPORTED,
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_(" Only 8, 16, 32 bus width are suported\n"));
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}
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break;
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default:
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urj_bus_generic_free (bus);
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urj_error_set (URJ_ERROR_SYNTAX, "unrecognised bus parameter '%s'", \
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urj_param_string(&urj_bus_param_list, cmd_params[i]));
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return NULL;
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}
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}
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if ((!bp->lbc_muxed) && (bp->lbc_num_d > 16))
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{
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urj_bus_generic_free (bus);
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urj_error_set (URJ_ERROR_UNSUPPORTED,
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_(" Only 8 and 16 non multiplexed bus width are suported\n"));
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return NULL;
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}
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if (bp->lbc_muxed)
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bp->lbc_num_ad = 32;
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/* Get the signals */
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if (bp->lbc_muxed)
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{
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failed |= urj_bus_generic_attach_sig( part, &(ALE), "LALE" );
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for (i = 0; i < LBC_NUM_LAD; i++) {
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sprintf( buff, "LAD%d", i );
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failed |= urj_bus_generic_attach_sig( part, &(LAD[i]), buff );
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}
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}
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else
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{
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failed |= urj_bus_generic_attach_sig( part, &(LA[7]), "LDP2" );
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failed |= urj_bus_generic_attach_sig( part, &(LA[8]), "LDP3" );
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failed |= urj_bus_generic_attach_sig( part, &(LA[9]), "LGPL5" );
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failed |= urj_bus_generic_attach_sig( part, &(LA[10]), "LALE" );
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for (i = 11; i < 27; i++) {
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sprintf( buff, "LAD%d", i + 5 );
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failed |= urj_bus_generic_attach_sig( part, &(LA[i]), buff );
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}
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}
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for (i = 27; i < LBC_NUM_LAD; i++) {
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sprintf( buff, "LA%d", i );
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failed |= urj_bus_generic_attach_sig( part, &(LA[i]), buff );
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}
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for (i = 0; i < LBC_NUM_LCS; i++) {
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sprintf( buff, "LCS_B%d", i );
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failed |= urj_bus_generic_attach_sig( part, &(nCS[i]), buff );
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}
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for (i = 0; i < LBC_NUM_LWE; i++) {
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sprintf( buff, "LWE_B%d", i );
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failed |= urj_bus_generic_attach_sig( part, &(nWE[i]), buff );
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}
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failed |= urj_bus_generic_attach_sig( part, &(nOE), "LGPL2" );
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failed |= urj_bus_generic_attach_sig( part, &(BCTL), "LBCTL" );
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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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urj_log(URJ_LOG_LEVEL_NORMAL,
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"%sMUXed %db address, %db data bus\n",
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((bp->lbc_muxed) ? "" : "Non-"), bp->lbc_num_ad, bp->lbc_num_d);
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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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mpc837x_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, _("Freescale MPC837X compatible bus driver via BSR (JTAG part No. %d)\n"), 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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mpc837x_bus_area( urj_bus_t *bus, uint32_t adr, urj_bus_area_t *area )
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{
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bus_params_t *bp = (bus_params_t *) bus->params;
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area->description = N_("Local Bus Controller");
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area->start = UINT32_C(0x00000000);
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area->length = UINT64_C(0x100000000);
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area->width = bp->lbc_num_d;
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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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bus_params_t *bp = (bus_params_t *) bus->params;
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urj_part_t *p = bus->part;
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int i;
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if (bp->lbc_muxed)
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{
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for (i = 0; i < bp->lbc_num_ad; i++)
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urj_part_set_signal( p, LAD[LBC_NUM_LAD - i - 1], 1, (a >> i) & 1 );
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for (i = 0; i < 5; i++)
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urj_part_set_signal( p, LA[LBC_NUM_LAD - i - 1], 1, (a >> i) & 1 );
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}
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else
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{
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for (i = 0; i < bp->lbc_num_ad; i++)
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urj_part_set_signal( p, LA[LBC_NUM_LAD - i - 1], 1, (a >> i) & 1 );
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}
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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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bus_params_t *bp = (bus_params_t *) bus->params;
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urj_part_t *p = bus->part;
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urj_bus_area_t area;
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int i;
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mpc837x_bus_area( bus, adr, &area);
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if (area.width > bp->lbc_num_d)
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return;
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for (i = 0; i < area.width; i++)
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urj_part_set_signal( p, LAD[bp->lbc_num_d - i - 1], 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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bus_params_t *bp = (bus_params_t *) bus->params;
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urj_part_t *p = bus->part;
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urj_bus_area_t area;
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int i;
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mpc837x_bus_area( bus, adr, &area);
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if (area.width > bp->lbc_num_d)
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return;
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for (i = 0; i < area.width; i++)
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urj_part_set_signal( p, LAD[bp->lbc_num_d - i - 1], 1, (d >> i) & 1 );
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}
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static uint32_t
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get_data( urj_bus_t *bus, uint32_t adr )
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{
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bus_params_t *bp = (bus_params_t *) bus->params;
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urj_part_t *p = bus->part;
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urj_bus_area_t area;
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uint32_t d = 0;
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int i;
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mpc837x_bus_area( bus, adr, &area);
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if (area.width > bp->lbc_num_d)
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return 0;
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for (i = 0; i < area.width; i++) {
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d |= (uint32_t) (urj_part_get_signal( p, LAD[bp->lbc_num_d - i - 1] ) << i);
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}
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return d;
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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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mpc837x_bus_read_start( urj_bus_t *bus, uint32_t adr )
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{
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bus_params_t *bp = (bus_params_t *) bus->params;
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urj_chain_t *chain = bus->chain;
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urj_part_t *p = bus->part;
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uint8_t cs;
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int i;
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LAST_ADR = adr;
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cs = 0;
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for (i = 0; i < LBC_NUM_LCS; i++) {
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urj_part_set_signal( p, nCS[i], 1, !(cs==i) );
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}
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for (i = 0; i < LBC_NUM_LWE; i++) {
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urj_part_set_signal( p, nWE[i], 1, 1 );
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}
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setup_address( bus, adr );
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if (bp->lbc_muxed)
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{
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urj_part_set_signal( p, BCTL,1, 1 ); /* Address Out */
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urj_part_set_signal( p, ALE, 1, 1 );
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urj_part_set_signal( p, nOE, 1, 1 );
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urj_tap_chain_shift_data_registers( chain, 0 );
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urj_part_set_signal( p, BCTL,1, 0 ); /* Data In */
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urj_part_set_signal( p, ALE, 1, 0 );
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urj_part_set_signal( p, nOE, 1, 0 );
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}
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else
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{
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urj_part_set_signal( p, BCTL,1, 0 ); /* Data In */
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urj_part_set_signal( p, nOE, 1, 0 );
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set_data_in( bus, adr );
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}
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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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mpc837x_bus_read_next( urj_bus_t *bus, uint32_t adr )
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{
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bus_params_t *bp = (bus_params_t *) bus->params;
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urj_chain_t *chain = bus->chain;
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urj_part_t *p = bus->part;
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uint32_t d;
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if (bp->lbc_muxed)
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{
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set_data_in( bus, adr );
|
||||
urj_tap_chain_shift_data_registers( chain, 0 );
|
||||
|
||||
urj_tap_chain_shift_data_registers( chain, 1 );
|
||||
d = get_data( bus, LAST_ADR );
|
||||
|
||||
setup_address( bus, adr );
|
||||
LAST_ADR = adr;
|
||||
|
||||
urj_part_set_signal( p, BCTL,1, 1 ); /* Address Out */
|
||||
urj_part_set_signal( p, ALE, 1, 1 );
|
||||
urj_part_set_signal( p, nOE, 1, 1 );
|
||||
urj_tap_chain_shift_data_registers( chain, 0 );
|
||||
|
||||
urj_part_set_signal( p, BCTL,1, 0 ); /* Data In*/
|
||||
urj_part_set_signal( p, ALE, 1, 0 );
|
||||
urj_part_set_signal( p, nOE, 1, 0 );
|
||||
urj_tap_chain_shift_data_registers( chain, 0 );
|
||||
}
|
||||
else
|
||||
{
|
||||
setup_address( bus, adr ); /* Data In */
|
||||
urj_tap_chain_shift_data_registers( chain, 1 );
|
||||
d = get_data( bus, LAST_ADR );
|
||||
}
|
||||
|
||||
LAST_ADR = adr;
|
||||
return d;
|
||||
}
|
||||
|
||||
/**
|
||||
* bus->driver->(*read_end)
|
||||
*
|
||||
*/
|
||||
static uint32_t
|
||||
mpc837x_bus_read_end( urj_bus_t *bus )
|
||||
{
|
||||
bus_params_t *bp = (bus_params_t *) bus->params;
|
||||
urj_chain_t *chain = bus->chain;
|
||||
urj_part_t *p = bus->part;
|
||||
int i;
|
||||
|
||||
|
||||
if (bp->lbc_muxed)
|
||||
{
|
||||
set_data_in( bus, LAST_ADR );
|
||||
urj_tap_chain_shift_data_registers( chain, 0 );
|
||||
urj_part_set_signal( p, ALE, 1, 1 );
|
||||
}
|
||||
|
||||
for (i = 0; i < LBC_NUM_LCS; i++) {
|
||||
urj_part_set_signal( p, nCS[i], 1, 1 );
|
||||
}
|
||||
|
||||
urj_part_set_signal( p, BCTL,1, 1 );
|
||||
urj_part_set_signal( p, nOE, 1, 1 );
|
||||
|
||||
urj_tap_chain_shift_data_registers( chain, 1 );
|
||||
|
||||
return get_data( bus, LAST_ADR );
|
||||
}
|
||||
|
||||
/**
|
||||
* bus->driver->(*write)
|
||||
*
|
||||
*/
|
||||
static void
|
||||
mpc837x_bus_write( urj_bus_t *bus, uint32_t adr, uint32_t data )
|
||||
{
|
||||
bus_params_t *bp = (bus_params_t *) bus->params;
|
||||
urj_chain_t *chain = bus->chain;
|
||||
urj_part_t *p = bus->part;
|
||||
urj_bus_area_t area;
|
||||
uint8_t cs;
|
||||
int i;
|
||||
|
||||
|
||||
mpc837x_bus_area( bus, adr, &area);
|
||||
if (area.width > bp->lbc_num_d)
|
||||
return;
|
||||
|
||||
cs = 0;
|
||||
urj_part_set_signal( p, BCTL,1, 1 );
|
||||
urj_part_set_signal( p, nOE, 1, 1 );
|
||||
|
||||
for (i = 0; i < LBC_NUM_LWE; i++) {
|
||||
urj_part_set_signal( p, nWE[i], 1, 1 );
|
||||
}
|
||||
|
||||
|
||||
if (bp->lbc_muxed)
|
||||
{
|
||||
setup_address( bus, adr );
|
||||
urj_part_set_signal( p, ALE, 1, 1 );
|
||||
urj_tap_chain_shift_data_registers( chain, 0 );
|
||||
urj_part_set_signal( p, ALE, 1, 0 );
|
||||
urj_tap_chain_shift_data_registers( chain, 0 );
|
||||
}
|
||||
else
|
||||
{
|
||||
setup_address( bus, adr );
|
||||
}
|
||||
|
||||
for (i = 0; i < LBC_NUM_LCS; i++) {
|
||||
urj_part_set_signal( p, nCS[i], 1, !(cs==i) );
|
||||
}
|
||||
|
||||
setup_data( bus, adr, data );
|
||||
|
||||
urj_tap_chain_shift_data_registers( chain, 0 );
|
||||
|
||||
switch (area.width)
|
||||
{
|
||||
case 32:
|
||||
urj_part_set_signal( p, nWE[3], 1, 0 );
|
||||
urj_part_set_signal( p, nWE[2], 1, 0 );
|
||||
case 16:
|
||||
urj_part_set_signal( p, nWE[1], 1, 0 );
|
||||
case 8:
|
||||
urj_part_set_signal( p, nWE[0], 1, 0 );
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
urj_tap_chain_shift_data_registers( chain, 0 );
|
||||
|
||||
for (i = 0; i < LBC_NUM_LWE; i++) {
|
||||
urj_part_set_signal( p, nWE[i], 1, 1 );
|
||||
}
|
||||
|
||||
urj_tap_chain_shift_data_registers( chain, 0 );
|
||||
}
|
||||
|
||||
|
||||
const urj_bus_driver_t urj_bus_mpc837x_bus = {
|
||||
"mpc837x",
|
||||
N_("Freescale MPC837x compatible bus driver via BSR, parameter: [mux] [width]"),
|
||||
mpc837x_bus_new,
|
||||
urj_bus_generic_free,
|
||||
mpc837x_bus_printinfo,
|
||||
urj_bus_generic_prepare_extest,
|
||||
mpc837x_bus_area,
|
||||
mpc837x_bus_read_start,
|
||||
mpc837x_bus_read_next,
|
||||
mpc837x_bus_read_end,
|
||||
urj_bus_generic_read,
|
||||
mpc837x_bus_write,
|
||||
urj_bus_generic_no_init
|
||||
};
|
||||
Loading…
Reference in New Issue