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/*-
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
* Copyright (c) 1998 Doug Rabson <dfr@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: main.c,v 1.8 1998/10/31 17:12:32 dfr Exp $
*/
#include <stand.h>
#include <string.h>
#include <sys/param.h>
#include <machine/rpb.h>
#include <machine/prom.h>
#include "bootstrap.h"
#include "libalpha/libalpha.h"
extern char bootprog_name[], bootprog_rev[], bootprog_date[], bootprog_maker[];
struct alpha_devdesc currdev; /* our current device */
struct arch_switch archsw; /* MI/MD interface boundary */
extern char end[];
extern void OSFpal(void);
extern void halt(void);
unsigned long
memsize()
{
struct rpb *hwrpb = (struct rpb *)HWRPB_ADDR;
struct mddt *mddtp;
struct mddt_cluster *memc;
int i;
unsigned long total = 0;
mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off);
for (i = 0; i < mddtp->mddt_cluster_cnt; i++) {
memc = &mddtp->mddt_clusters[i];
total += memc->mddt_pg_cnt << PAGE_SHIFT;
}
return total;
}
static void
extend_heap()
{
struct rpb *hwrpb = (struct rpb *)HWRPB_ADDR;
struct mddt *mddtp;
struct mddt_cluster *memc;
int i;
unsigned long total = 0;
unsigned long startpfn;
vm_offset_t startva;
vm_offset_t startpte;
/*
* Find the last usable memory cluster and add some of its pages
* to our address space. The 256k allowed by the firmware isn't quite
* adequate for our needs.
*/
mddtp = (struct mddt *)(((caddr_t)hwrpb) + hwrpb->rpb_memdat_off);
for (i = mddtp->mddt_cluster_cnt - 1; i >= 0; i--) {
memc = &mddtp->mddt_clusters[i];
if (!(memc->mddt_usage & (MDDT_NONVOLATILE | MDDT_PALCODE)))
break;
}
/*
* We want to extend the heap from 256k to 512k. With 8k pages
* (assumed), we need 32 pages. We take pages from the end of the
* last usable memory region, taking care to avoid the memory used
* by the kernel's message buffer. We allow 4 pages for the
* message buffer.
*/
startpfn = memc->mddt_pfn + memc->mddt_pg_cnt - 4 - 32;
startva = 0x20040000;
startpte = 0x40000000
+ (((startva >> 23) & 0x3ff) << PAGE_SHIFT)
+ (((startva >> 13) & 0x3ff) << 3);
for (i = 0; i < 32; i++) {
u_int64_t pte;
pte = ((startpfn + i) << 32) | 0x1101;
*(u_int64_t *) (startpte + 8 * i) = pte;
}
}
void
main(void)
{
int i;
char bootfile[128];
/*
* Initialise the heap as early as possible. Once this is done,
* alloc() is usable. The stack is buried inside us, so this is
* safe.
*/
extend_heap();
setheap((void *)end, (void *)0x20080000);
#ifdef LOADER
/*
* If this is the two stage disk loader, add the memory used by
* the first stage to the heap.
*/
free_region((void *)PRIMARY_LOAD_ADDRESS,
(void *)SECONDARY_LOAD_ADDRESS);
#endif
/*
* XXX Chicken-and-egg problem; we want to have console output
* early, but some console attributes may depend on reading from
* eg. the boot device, which we can't do yet. We can use
* printf() etc. once this is done.
*/
cons_probe();
/* switch to OSF pal code. */
OSFpal();
/*
* Initialise the block cache
*/
bcache_init(32, 512); /* 16k XXX tune this */
/*
* March through the device switch probing for things.
*/
for (i = 0; devsw[i] != NULL; i++)
if (devsw[i]->dv_init != NULL)
(devsw[i]->dv_init)();
printf("\n");
printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
printf("(%s, %s)\n", bootprog_maker, bootprog_date);
printf("Memory: %ld k\n", memsize() / 1024);
/* We're booting from an SRM disk, try to spiff this */
currdev.d_dev = devsw[0]; /* XXX presumes that biosdisk is first in devsw */
currdev.d_type = currdev.d_dev->dv_type;
currdev.d_kind.srmdisk.unit = 0;
currdev.d_kind.srmdisk.slice = -1; /* XXX should be able to detect this, default to autoprobe */
currdev.d_kind.srmdisk.partition = 0; /* default to 'a' */
/* Create alpha-specific variables */
prom_getenv(PROM_E_BOOTED_FILE, bootfile, sizeof(bootfile));
if (bootfile[0])
setenv("bootfile", bootfile, 1);
env_setenv("currdev", EV_VOLATILE, alpha_fmtdev(&currdev), alpha_setcurrdev, env_nounset);
env_setenv("loaddev", EV_VOLATILE, alpha_fmtdev(&currdev), env_noset, env_nounset);
setenv("LINES", "24", 1); /* optional */
archsw.arch_autoload = alpha_autoload;
archsw.arch_getdev = alpha_getdev;
archsw.arch_copyin = alpha_copyin;
archsw.arch_copyout = alpha_copyout;
archsw.arch_readin = alpha_readin;
/*
* SRM firmware takes *ages* to open the disk device. We hold it
* open until the closeall() when we exec the kernel. Note that
* we must close it eventually since otherwise the firmware leaves
* the ncr hardware in a broken state (at least it does on my EB164).
*/
open("/boot", O_RDONLY);
interact(); /* doesn't return */
}
COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
static int
command_reboot(int argc, char *argv[])
{
printf("Rebooting...\n");
delay(1000000);
reboot();
/* Note: we shouldn't get to this point! */
panic("Reboot failed!");
exit(0);
}
COMMAND_SET(halt, "halt", "halt the system", command_halt);
static int
command_halt(int argc, char *argv[])
{
halt(); /* never returns */
return(CMD_OK);
}
#if 0
COMMAND_SET(stack, "stack", "show stack usage", command_stack);
static int
command_stack(int argc, char *argv[])
{
char *cp;
for (cp = &stackbase; cp < &stacktop; cp++)
if (*cp != 0)
break;
printf("%d bytes of stack used\n", &stacktop - cp);
return(CMD_OK);
}
#endif
COMMAND_SET(heap, "heap", "show heap usage", command_heap);
static int
command_heap(int argc, char *argv[])
{
printf("heap base at %p, top at %p, used %ld\n", end, sbrk(0), sbrk(0) - end);
return(CMD_OK);
}
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