bootops.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 1996-2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Implementation of the vestigial bootops vector for platforms using the
* 1275-like boot interfaces.
*/
#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);
/*
* This is the number for this version of bootops, which is vestigial.
* Standalones that require the old bootops will look in bootops.bsys_version,
* see this number is higher than they expect and fail gracefully.
* They can make this "peek" successfully even if they are ILP32 programs.
*/
int boot_version = BO_VERSION;
struct bootops bootops;
void
setup_bootops(void)
{
/* sanity-check bsys_printf - old kernels need to fail with a message */
#if !defined(lint)
if (offsetof(struct bootops, bsys_printf) != 60) {
printf("boot: bsys_printf is at offset 0x%lx instead of 60\n"
"boot: this will likely make old kernels die without "
"printing a message.\n",
offsetof(struct bootops, bsys_printf));
}
/* sanity-check bsys_1275_call - if it moves, kernels cannot boot */
if (offsetof(struct bootops, bsys_1275_call) != 24) {
printf("boot: bsys_1275_call is at offset 0x%lx instead of 24\n"
"boot: this will likely break the kernel\n",
offsetof(struct bootops, bsys_1275_call));
}
#endif
bootops.bsys_version = boot_version;
bootops.bsys_1275_call = (uint64_t)boot1275_entry;
/* so old kernels die with a message */
bootops.bsys_printf = (uint32_t)boot_fail_gracefully;
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
}
void
boot_fail_gracefully(void)
{
prom_panic(
"mismatched version of /boot interface: new boot, old kernel");
}