intel/kmdb/kmdb_promif_isadep.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * "PROM" interface
 */

#include <sys/types.h>
#include <sys/promif.h>

#include <kmdb/kmdb_promif_impl.h>
#include <kmdb/kmdb_kdi.h>
#include <kmdb/kmdb_dpi.h>
#include <mdb/mdb_err.h>
#include <mdb/mdb_debug.h>
#include <mdb/mdb_string.h>
#include <mdb/mdb.h>

struct boot_syscalls *kmdb_sysp;

ssize_t
kmdb_prom_obp_writer(caddr_t buf, size_t len)
{
    int i;

    for (i = 0; i < len; i++)
        prom_putchar(*buf++);

    return (len);
}

/*ARGSUSED*/
ihandle_t
kmdb_prom_get_handle(char *name)
{
    /* no handles here */
    return (0);
}

char *
kmdb_prom_get_ddi_prop(kmdb_auxv_t *kav, char *propname)
{
    int i;

    if (kav->kav_pcache != NULL) {
        for (i = 0; i < kav->kav_nprops; i++) {
            kmdb_auxv_nv_t *nv = &kav->kav_pcache[i];
            if (strcmp(nv->kanv_name, propname) == 0)
                return (nv->kanv_val);
        }
    }

    return (NULL);
}

/*ARGSUSED*/
void
kmdb_prom_free_ddi_prop(char *val)
{
}

int
kmdb_prom_stdout_is_framebuffer(kmdb_auxv_t *kav)
{
    char *dev;

    /*
     * We can't use the official promif version, as we need to ensure that
     * property lookups come from our property cache.
     */

    if ((dev = kmdb_prom_get_ddi_prop(kav, "output-device")) == NULL)
        return (0);

    return (strcmp(dev, "screen") == 0);
}