sparc/common/bootops.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 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <sys/types.h>
#include <sys/bootconf.h>
#include <sys/param.h>
#include <sys/obpdefs.h>
#include <sys/promif.h>
#include <sys/salib.h>
#include <sys/boot.h>
#include <stddef.h>
#include "boot_plat.h"

#ifdef DEBUG
extern int debug;
#else
static const int debug = 0;
#endif

#define dprintf     if (debug) printf

extern void closeall(int);

struct bootops bootops;

static void
boot_fail(void)
{
    prom_panic("bootops is gone, it should not be called");
}

void
setup_bootops(void)
{
    bootops.bsys_version = BO_VERSION;
    bootops.bsys_1275_call = (uint64_t)boot_fail;
    bootops.bsys_printf = (uint32_t)(uintptr_t)boot_fail;

    if (!memlistpage) /* paranoia runs rampant */
        prom_panic("\nMemlistpage not setup yet.");
    /*
     * The memory list should always be updated last.  The prom
     * calls which are made to update a memory list may have the
     * undesirable affect of claiming physical memory.  This may
     * happen after the kernel has created its page free list.
     * The kernel deals with this by comparing the n and n-1
     * snapshots of memory.  Updating the memory available list
     * last guarantees we will have a current, accurate snapshot.
     * See bug #1260786.
     */
    update_memlist("virtual-memory", "available", &vfreelistp);
    update_memlist("memory", "available", &pfreelistp);

    dprintf("\nPhysinstalled: ");
    if (debug) print_memlist(pinstalledp);
    dprintf("\nPhysfree: ");
    if (debug) print_memlist(pfreelistp);
    dprintf("\nVirtfree: ");
    if (debug) print_memlist(vfreelistp);
}

void
install_memlistptrs(void)
{

    /* prob only need 1 page for now */
    memlistextent = tablep - memlistpage;

    dprintf("physinstalled = %p\n", (void *)pinstalledp);
    dprintf("physavail = %p\n", (void *)pfreelistp);
    dprintf("virtavail = %p\n", (void *)vfreelistp);
    dprintf("extent = 0x%lx\n", memlistextent);
}

/*
 *      A word of explanation is in order.
 *      This routine is meant to be called during
 *      boot_release(), when the kernel is trying
 *      to ascertain the current state of memory
 *      so that it can use a memlist to walk itself
 *      thru kvm_init().
 */

void
update_memlist(char *name, char *prop, struct memlist **list)
{
    /* Just take another prom snapshot */
    *list = fill_memlists(name, prop, *list);
    install_memlistptrs();
}

/*
 *  This routine is meant to be called by the
 *  kernel to shut down all boot and prom activity.
 *  After this routine is called, PROM or boot IO is no
 *  longer possible, nor is memory allocation.
 */
void
kern_killboot(void)
{
    if (verbosemode) {
        dprintf("Entering boot_release()\n");
        dprintf("\nPhysinstalled: ");
        if (debug) print_memlist(pinstalledp);
        dprintf("\nPhysfree: ");
        if (debug) print_memlist(pfreelistp);
        dprintf("\nVirtfree: ");
        if (debug) print_memlist(vfreelistp);
    }
    if (debug) {
        dprintf("Calling quiesce_io()\n");
        prom_enter_mon();
    }

    /* close all open devices */
    closeall(1);

    /*
     *  Now we take YAPS (yet another Prom snapshot) of
     *  memory, just for safety sake.
     *
     * The memory list should always be updated last.  The prom
     * calls which are made to update a memory list may have the
     * undesirable affect of claiming physical memory.  This may
     * happen after the kernel has created its page free list.
     * The kernel deals with this by comparing the n and n-1
     * snapshots of memory.  Updating the memory available list
     * last guarantees we will have a current, accurate snapshot.
     * See bug #1260786.
     */
    update_memlist("virtual-memory", "available", &vfreelistp);
    update_memlist("memory", "available", &pfreelistp);

    if (verbosemode) {
        dprintf("physinstalled = %p\n", (void *)pinstalledp);
        dprintf("physavail = %p\n", (void *)pfreelistp);
        dprintf("virtavail = %p\n", (void *)vfreelistp);
        dprintf("extent = 0x%lx\n", memlistextent);
        dprintf("Leaving boot_release()\n");

        dprintf("Physinstalled: \n");
        if (debug)
            print_memlist(pinstalledp);

        dprintf("Physfree:\n");
        if (debug)
            print_memlist(pfreelistp);

        dprintf("Virtfree: \n");
        if (debug)
            print_memlist(vfreelistp);
    }

#ifdef DEBUG_MMU
    dump_mmu();
    prom_enter_mon();
#endif
}