245 lines
7.1 KiB
C
245 lines
7.1 KiB
C
/*-
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#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;
|
|
}
|
|
|
|
/* #define XTRA_PAGES 32 */
|
|
#define XTRA_PAGES 64
|
|
|
|
void
|
|
extend_heap(void)
|
|
{
|
|
struct rpb *hwrpb = (struct rpb *)HWRPB_ADDR;
|
|
struct mddt *mddtp;
|
|
struct mddt_cluster *memc = 0;
|
|
int i;
|
|
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 up to XTRA_PAGES more 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 - XTRA_PAGES;
|
|
startva = 0x20040000;
|
|
startpte = 0x40000000
|
|
+ (((startva >> 23) & 0x3ff) << PAGE_SHIFT)
|
|
+ (((startva >> 13) & 0x3ff) << 3);
|
|
|
|
for (i = 0; i < XTRA_PAGES; i++) {
|
|
u_int64_t pte;
|
|
pte = ((startpfn + i) << 32) | 0x1101;
|
|
*(u_int64_t *) (startpte + 8 * i) = pte;
|
|
}
|
|
}
|
|
|
|
int
|
|
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.
|
|
*/
|
|
setheap((void *)end, (void *)(0x20040000 + XTRA_PAGES * 8192));
|
|
|
|
#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 */
|
|
|
|
return 0;
|
|
}
|
|
|
|
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);
|
|
}
|