184 lines
5.0 KiB
C
184 lines
5.0 KiB
C
/* $NetBSD: obio.c,v 1.6 2002/02/08 02:30:12 thorpej Exp $ */
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/*
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* Copyright (c) 2001, 2002 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* On-board device autoconfiguration support for Intel IQ80310
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* evaluation boards.
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*
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* The "obio" device node handles all of the CPLD functions,
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* as well ... timer, interrupts, etc.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/autoconf.h>
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#include <machine/bus.h>
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#include <evbarm/iq80310/iq80310reg.h>
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#include <evbarm/iq80310/iq80310var.h>
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#include <evbarm/iq80310/obiovar.h>
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#include "locators.h"
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int obio_match(struct device *, struct cfdata *, void *);
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void obio_attach(struct device *, struct device *, void *);
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struct cfattach obio_ca = {
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sizeof(struct device), obio_match, obio_attach,
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};
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int obio_print(void *, const char *);
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int obio_submatch(struct device *, struct cfdata *, void *);
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/* there can be only one */
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int obio_found;
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struct {
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const char *od_name;
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bus_addr_t od_addr;
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int od_irq;
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} obio_devices[] =
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#if defined(IOP310_TEAMASA_NPWR)
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{
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/*
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* There is only one UART on the Npwr.
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*/
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{ "com", IQ80310_UART2, XINT3_IRQ(XINT3_UART2) },
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{ NULL, 0, 0 },
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};
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#else /* Default to stock IQ80310 */
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{
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/*
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* Order these so the first UART matched is the one at J9
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* and the second is the one at J10. (This is the same
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* ordering RedBoot uses.)
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*/
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{ "com", IQ80310_UART2, XINT3_IRQ(XINT3_UART2) },
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{ "com", IQ80310_UART1, XINT3_IRQ(XINT3_UART1) },
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{ NULL, 0, 0 },
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};
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#endif /* list of IQ80310-based designs */
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int
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obio_match(struct device *parent, struct cfdata *cf, void *aux)
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{
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#if 0
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struct mainbus_attach_args *ma = aux;
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#endif
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if (obio_found)
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return (0);
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#if 1
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/* XXX Shoot arch/arm/mainbus in the head. */
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return (1);
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#else
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if (strcmp(cf->cf_driver->cd_name, ma->ma_name) == 0)
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return (1);
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return (0);
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#endif
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}
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void
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obio_attach(struct device *parent, struct device *self, void *aux)
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{
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struct obio_attach_args oba;
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int i;
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obio_found = 1;
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#if defined(IOP310_TEAMASA_NPWR)
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/*
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* These boards don't have revision/backplane detect registers.
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* Just ignore it.
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*/
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printf("\n");
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#else /* Default to stock IQ80310 */
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{
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/*
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* Yes, we're using knowledge of the obio bus space internals,
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* here.
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*/
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uint8_t board_rev = CPLD_READ(IQ80310_BOARD_REV);
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uint8_t cpld_rev = CPLD_READ(IQ80310_CPLD_REV);
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uint8_t backplane = CPLD_READ(IQ80310_BACKPLANE_DET);
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printf(": board rev. %c, CPLD rev. %c, backplane %spresent\n",
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BOARD_REV(board_rev), CPLD_REV(cpld_rev),
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(backplane & 1) ? "" : "not ");
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}
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#endif /* list of IQ80310-based designs */
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for (i = 0; obio_devices[i].od_name != NULL; i++) {
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oba.oba_name = obio_devices[i].od_name;
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oba.oba_st = &obio_bs_tag;
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oba.oba_addr = obio_devices[i].od_addr;
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oba.oba_irq = obio_devices[i].od_irq;
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(void) config_found_sm(self, &oba, obio_print, obio_submatch);
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}
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}
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int
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obio_print(void *aux, const char *pnp)
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{
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struct obio_attach_args *oba = aux;
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if (pnp)
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printf("%s at %s", oba->oba_name, pnp);
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printf(" addr 0x%08lx", oba->oba_addr);
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return (UNCONF);
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}
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int
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obio_submatch(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct obio_attach_args *oba = aux;
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if (cf->cf_loc[OBIOCF_ADDR] != OBIOCF_ADDR_DEFAULT &&
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cf->cf_loc[OBIOCF_ADDR] != oba->oba_addr)
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return (0);
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return ((*cf->cf_attach->ca_match)(parent, cf, aux));
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}
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