File: [cvs.NetBSD.org] / src / sys / arch / hpcmips / hpcmips / machdep.c (download)
Revision 1.26.4.1, Wed Jul 19 00:25:26 2000 UTC (20 years, 6 months ago) by jeffs
Branch: netbsd-1-5
CVS Tags: netbsd-1-5-ALPHA2
Changes since 1.26: +2 -3
lines
Pull up cpu_intr() prototype + platform dependent machdeps.
(approved by thorepj).
|
/* $NetBSD: machdep.c,v 1.26.4.1 2000/07/19 00:25:26 jeffs Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department, The Mach Operating System project at
* Carnegie-Mellon University and Ralph Campbell.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)machdep.c 8.3 (Berkeley) 1/12/94
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.26.4.1 2000/07/19 00:25:26 jeffs Exp $");
/* from: Utah Hdr: machdep.c 1.63 91/04/24 */
#include "opt_vr41x1.h"
#include "opt_tx39xx.h"
#include "biconsdev.h"
#include "fs_mfs.h"
#include "opt_ddb.h"
#include "opt_rtc_offset.h"
#include "fs_nfs.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/map.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <sys/reboot.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/msgbuf.h>
#include <sys/ioctl.h>
#include <sys/user.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
#include <sys/kcore.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <uvm/uvm_extern.h>
#include <sys/sysctl.h>
#include <dev/cons.h>
#include <ufs/mfs/mfs_extern.h> /* mfs_initminiroot() */
#include <machine/cpu.h>
#include <machine/reg.h>
#include <machine/psl.h>
#include <machine/pte.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/sysconf.h>
#include <machine/bootinfo.h>
#include <machine/platid.h>
#include <machine/locore.h>
#ifdef DDB
#include <sys/exec_aout.h> /* XXX backwards compatilbity for DDB */
#include <machine/db_machdep.h>
#include <ddb/db_access.h>
#include <ddb/db_sym.h>
#include <ddb/db_extern.h>
#ifndef DB_ELFSIZE
#error Must define DB_ELFSIZE!
#endif
#define ELFSIZE DB_ELFSIZE
#include <sys/exec_elf.h>
#endif
#if NBICONSDEV > 0
#include <hpcmips/dev/biconsvar.h>
#include <hpcmips/dev/bicons.h>
#define DPRINTF(arg) printf arg
#else
#define DPRINTF(arg)
#endif
#ifdef NFS
extern int nfs_mountroot __P((void));
extern int (*mountroot) __P((void));
#endif
/* the following is used externally (sysctl_hw) */
char machine[] = MACHINE; /* from <machine/param.h> */
char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */
char cpu_model[128];
char cpu_name[40]; /* set cpu depend xx_init() */
/* Our exported CPU info; we can have only one. */
struct cpu_info cpu_info_store;
/* verbose boot message */
int hpcmips_verbose = 0;
#define VPRINTF(arg) if (hpcmips_verbose) printf arg;
/* maps for VM objects */
vm_map_t exec_map = NULL;
vm_map_t mb_map = NULL;
vm_map_t phys_map = NULL;
int systype; /* mother board type */
int physmem; /* max supported memory, changes to actual */
int mem_cluster_cnt;
phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX];
/*
* safepri is a safe priority for sleep to set for a spin-wait
* during autoconfiguration or after a panic.
* Used as an argument to splx().
* XXX disables interrupt 5 to disable mips3 on-chip clock, which also
* disables mips1 FPU interrupts.
*/
int safepri = MIPS3_PSL_LOWIPL; /* XXX */
unsigned ssir; /* schedules software interrupt */
struct splvec splvec; /* XXX will go XXX */
void mach_init __P((int, char *[], struct bootinfo*));
static struct bootinfo bi_copy;
struct bootinfo *bootinfo = NULL;
unsigned (*clkread) __P((void)); /* high resolution timer if available */
unsigned nullclkread __P((void));
int initcpu __P((void));
void consinit __P((void));
#ifdef DEBUG
/* stacktrace code violates prototypes to get callee's registers */
extern void stacktrace __P((void)); /*XXX*/
#endif
/* Motherboard or system-specific initialization vector */
void unimpl_os_init __P((void));
void unimpl_bus_reset __P((void));
int unimpl_intr __P((unsigned, unsigned, unsigned, unsigned));
void unimpl_cons_init __P((void));
void unimpl_device_register __P((struct device *, void *));
int unimpl_iointr __P((u_int32_t, u_int32_t, u_int32_t, u_int32_t));
void unimpl_clockintr __P ((void *));
void unimpl_fb_init __P((caddr_t*));
void unimpl_mem_init __P((paddr_t));
void unimpl_reboot __P((int howto, char *bootstr));
struct platform platform = {
"iobus not set",
unimpl_os_init,
unimpl_bus_reset,
unimpl_cons_init,
unimpl_device_register,
unimpl_iointr,
unimpl_clockintr,
unimpl_fb_init,
unimpl_mem_init,
unimpl_reboot,
};
#ifdef VR41X1
extern void vr_init __P((void));
#endif
#ifdef TX39XX
extern void tx_init __P((void));
#endif
extern caddr_t esym;
extern struct user *proc0paddr;
/*
* Do all the stuff that locore normally does before calling main().
* Process arguments passed to us by the boot loader.
* Return the first page address following the system.
*/
void
mach_init(argc, argv, bi)
int argc;
char *argv[];
struct bootinfo *bi;
{
int i;
caddr_t kernend, v;
unsigned size;
char *cp;
extern char edata[], end[];
/* clear the BSS segment */
#ifdef DDB
if (memcmp(((Elf_Ehdr *)end)->e_ident, ELFMAG, SELFMAG) == 0 &&
((Elf_Ehdr *)end)->e_ident[EI_CLASS] == ELFCLASS) {
esym = end;
esym += ((Elf_Ehdr *)end)->e_entry;
kernend = (caddr_t)mips_round_page(esym);
bzero(edata, end - edata);
} else
#endif
{
kernend = (caddr_t)mips_round_page(end);
memset(edata, 0, kernend - edata);
}
/*
* Arguments are set up by boot lader.
*/
if (bi && bi->magic == BOOTINFO_MAGIC) {
memset(&bi_copy, 0, sizeof(struct bootinfo));
memcpy(&bi_copy, bi, min(bi->length, sizeof(struct bootinfo)));
bootinfo = &bi_copy;
if (bootinfo->platid_cpu != 0) {
platid.dw.dw0 = bootinfo->platid_cpu;
}
if (bootinfo->platid_machine != 0) {
platid.dw.dw1 = bootinfo->platid_machine;
}
}
/* Platform Specific Function Hooks */
#if defined TX39XX && defined VR41X1
#error misconfiguration
#elif defined TX39XX
tx_init();
#elif defined VR41X1
vr_init();
#endif
/* Initialize frame buffer */
(*platform.fb_init)(&kernend);
kernend = (caddr_t)mips_round_page(kernend);
#if NBICONSDEV > 0
/* Use builtin console output until we initialize a console driver. */
cn_tab = &builtincd;
/* Initialize builtin console. */
bicons_init();
#endif
/*
* Set the VM page size.
*/
uvmexp.pagesize = NBPG; /* Notify the VM system of our page size. */
uvm_setpagesize();
/*
* Copy exception-dispatch code down to exception vector.
* Initialize locore-function vector.
* Clear out the I and D caches.
*/
mips_vector_init();
/*
* Look at arguments passed to us and compute boothowto.
*/
/* XXX, for debugging. */
if (bootinfo) {
DPRINTF(("Bootinfo. available, "));
}
DPRINTF(("args: "));
for (i = 0; i < argc; i++) {
DPRINTF(("%s ", argv[i]));
}
DPRINTF(("\n"));
DPRINTF(("platform ID: %08lx %08lx\n", platid.dw.dw0, platid.dw.dw1));
#ifndef RTC_OFFSET
/*
* rtc_offset from bootinfo.timezone set by pbsdboot.exe
*/
if (rtc_offset == 0 && bootinfo
&& bootinfo->timezone > (-12*60)
&& bootinfo->timezone <= (12*60))
rtc_offset = bootinfo->timezone;
#endif /* RTC_OFFSET */
/* Compute bootdev */
makebootdev("wd0"); /* default boot device */
boothowto = 0;
#ifdef KADB
boothowto |= RB_KDB;
#endif
for (i = 1; i < argc; i++) {
for (cp = argv[i]; *cp; cp++) {
switch (*cp) {
case 's': /* single-user */
boothowto |= RB_SINGLE;
break;
case 'd': /* break into the kernel debugger ASAP */
boothowto |= RB_KDB;
break;
case 'm': /* mini root present in memory */
boothowto |= RB_MINIROOT;
break;
case 'a': /* ask for names */
boothowto |= RB_ASKNAME;
break;
case 'h': /* XXX, serial console */
bootinfo->bi_cnuse |= BI_CNUSE_SERIAL;
break;
case 'b':
/* boot device: -b=sd0 etc. */
#ifdef NFS
if (strcmp(cp+2, "nfs") == 0)
mountroot = nfs_mountroot;
else
makebootdev(cp+2);
#else
makebootdev(cp+2);
#endif
cp += strlen(cp);
break;
case 'v': /* verbose for hpcmips */
hpcmips_verbose = 1;
break;
}
}
}
#ifdef MFS
/*
* Check to see if a mini-root was loaded into memory. It resides
* at the start of the next page just after the end of BSS.
*/
if (boothowto & RB_MINIROOT) {
boothowto |= RB_DFLTROOT;
kernend += round_page(mfs_initminiroot(kernend));
}
#endif
#ifdef DDB
/*
* Initialize machine-dependent DDB commands, in case of early panic.
*/
db_machine_init();
/* init symbols if present */
if (esym)
ddb_init(1000, &end, (int*)esym);
#endif
/*
* Alloc u pages for proc0 stealing KSEG0 memory.
*/
proc0.p_addr = proc0paddr = (struct user *)kernend;
proc0.p_md.md_regs =
(struct frame *)((caddr_t)kernend + UPAGES * PAGE_SIZE) - 1;
memset(kernend, 0, UPAGES * PAGE_SIZE);
curpcb = &proc0.p_addr->u_pcb;
curpcb->pcb_context[11] = MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */
kernend += UPAGES * PAGE_SIZE;
/* Setup interrupt handler */
(*platform.os_init)();
/* Initialize console. */
(*platform.cons_init)();
#ifdef DDB
if (boothowto & RB_KDB)
Debugger();
#endif
/* Find physical memory regions. */
(*platform.mem_init)((paddr_t)kernend - MIPS_KSEG0_START);
printf("mem_cluster_cnt = %d\n", mem_cluster_cnt);
physmem = 0;
for (i = 0; i < mem_cluster_cnt; i++) {
printf("mem_clusters[%d] = {0x%lx,0x%lx}\n", i,
(paddr_t)mem_clusters[i].start,
(paddr_t)mem_clusters[i].size);
physmem += atop(mem_clusters[i].size);
}
/* Cluster 0 is always the kernel, which doesn't get loaded. */
for (i = 1; i < mem_cluster_cnt; i++) {
paddr_t start, size;
start = (paddr_t)mem_clusters[i].start;
size = (paddr_t)mem_clusters[i].size;
printf("loading 0x%lx,0x%lx\n", start, size);
memset((void *)MIPS_PHYS_TO_KSEG1(start), 0,
size);
uvm_page_physload(atop(start), atop(start + size),
atop(start), atop(start + size),
VM_FREELIST_DEFAULT);
}
/*
* Initialize error message buffer (at end of core).
*/
mips_init_msgbuf();
/*
* Allocate space for system data structures. These data structures
* are allocated here instead of cpu_startup() because physical
* memory is directly addressable. We don't have to map these into
* virtual address space.
*/
size = (unsigned)allocsys(NULL, NULL);
v = (caddr_t)pmap_steal_memory(size, NULL, NULL);
if ((allocsys(v, NULL) - v) != size)
panic("mach_init: table size inconsistency");
/*
* Initialize the virtual memory system.
*/
pmap_bootstrap();
}
/*
* Machine-dependent startup code.
* allocate memory for variable-sized tables, initialize cpu.
*/
void
cpu_startup()
{
unsigned i;
int base, residual;
vaddr_t minaddr, maxaddr;
vsize_t size;
char pbuf[9];
#ifdef DEBUG
extern int pmapdebug;
int opmapdebug = pmapdebug;
pmapdebug = 0;
#endif
/*
* Good {morning,afternoon,evening,night}.
*/
printf(version);
sprintf(cpu_model, "%s (%s)", platid_name(&platid), cpu_name);
printf("%s\n", cpu_model);
format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
printf("total memory = %s\n", pbuf);
if (hpcmips_verbose) {
/* show again when verbose mode */
printf("total memory banks = %d\n", mem_cluster_cnt);
for (i = 0; i < mem_cluster_cnt; i++) {
printf("memory bank %d = 0x%08lx %ldKB(0x%08lx)\n", i,
(paddr_t)mem_clusters[i].start,
(paddr_t)mem_clusters[i].size/1024,
(paddr_t)mem_clusters[i].size);
}
}
/*
* Allocate virtual address space for file I/O buffers.
* Note they are different than the array of headers, 'buf',
* and usually occupy more virtual memory than physical.
*/
size = MAXBSIZE * nbuf;
if (uvm_map(kernel_map, (vaddr_t *)&buffers, round_page(size),
NULL, UVM_UNKNOWN_OFFSET,
UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE,
UVM_ADV_NORMAL, 0)) != KERN_SUCCESS)
panic("cpu_startup: cannot allocate VM for buffers");
minaddr = (vaddr_t)buffers;
if ((bufpages / nbuf) >= btoc(MAXBSIZE)) {
bufpages = btoc(MAXBSIZE) * nbuf; /* do not overallocate RAM */
}
base = bufpages / nbuf;
residual = bufpages % nbuf;
/* now allocate RAM for buffers */
for (i = 0; i < nbuf; i++) {
vsize_t curbufsize;
vaddr_t curbuf;
struct vm_page *pg;
/*
* Each buffer has MAXBSIZE bytes of VM space allocated. Of
* that MAXBSIZE space, we allocate and map (base+1) pages
* for the first "residual" buffers, and then we allocate
* "base" pages for the rest.
*/
curbuf = (vaddr_t)buffers + (i * MAXBSIZE);
curbufsize = NBPG * ((i < residual) ? (base+1) : base);
while (curbufsize) {
pg = uvm_pagealloc(NULL, 0, NULL, 0);
if (pg == NULL)
panic("cpu_startup: not enough memory for "
"buffer cache");
pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg),
VM_PROT_READ|VM_PROT_WRITE);
curbuf += PAGE_SIZE;
curbufsize -= PAGE_SIZE;
}
}
/*
* Allocate a submap for exec arguments. This map effectively
* limits the number of processes exec'ing at any time.
*/
exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL);
/*
* Allocate a submap for physio
*/
phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
VM_PHYS_SIZE, 0, FALSE, NULL);
/*
* No need to allocate an mbuf cluster submap. Mbuf clusters
* are allocated via the pool allocator, and we use KSEG to
* map those pages.
*/
#ifdef DEBUG
pmapdebug = opmapdebug;
#endif
format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free));
printf("avail memory = %s\n", pbuf);
format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG);
printf("using %d buffers containing %s of memory\n", nbuf, pbuf);
/*
* Set up buffers, so they can be used to read disk labels.
*/
bufinit();
/*
* Set up CPU-specific registers, cache, etc.
*/
initcpu();
}
/*
* Machine dependent system variables.
*/
int
cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
int *name;
u_int namelen;
void *oldp;
size_t *oldlenp;
void *newp;
size_t newlen;
struct proc *p;
{
/* all sysctl names at this level are terminal */
if (namelen != 1)
return (ENOTDIR); /* overloaded */
switch (name[0]) {
case CPU_CONSDEV:
return (sysctl_rdstruct(oldp, oldlenp, newp, &cn_tab->cn_dev,
sizeof cn_tab->cn_dev));
default:
return (EOPNOTSUPP);
}
/* NOTREACHED */
}
void
cpu_reboot(howto, bootstr)
volatile int howto; /* XXX volatile to keep gcc happy */
char *bootstr;
{
extern int cold;
/* take a snap shot before clobbering any registers */
if (curproc)
savectx((struct user *)curpcb);
#ifdef DEBUG
if (panicstr)
stacktrace();
#endif
/* If system is cold, just halt. */
if (cold) {
howto |= RB_HALT;
goto haltsys;
}
/* If "always halt" was specified as a boot flag, obey. */
if ((boothowto & RB_HALT) != 0)
howto |= RB_HALT;
boothowto = howto;
if ((howto & RB_NOSYNC) == 0) {
/*
* Synchronize the disks....
*/
vfs_shutdown();
/*
* If we've been adjusting the clock, the todr
* will be out of synch; adjust it now.
*/
resettodr();
}
/* Disable interrupts. */
splhigh();
/* If rebooting and a dump is requested do it. */
#if 0
if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
#else
if (howto & RB_DUMP)
#endif
dumpsys();
haltsys:
/* run any shutdown hooks */
doshutdownhooks();
/* Finally, halt/reboot the system. */
printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting...");
(*platform.reboot)(howto, bootstr);
while(1)
;
/*NOTREACHED*/
}
/*
* Return the best possible estimate of the time in the timeval to
* which tvp points. We guarantee that the time will be greater than
* the value obtained by a previous call. Some models of DECstations
* provide a high resolution timer circuit.
*/
void
microtime(tvp)
struct timeval *tvp;
{
int s = splclock();
static struct timeval lasttime;
*tvp = time;
if (tvp->tv_usec >= 1000000) {
tvp->tv_usec -= 1000000;
tvp->tv_sec++;
}
if (tvp->tv_sec == lasttime.tv_sec &&
tvp->tv_usec <= lasttime.tv_usec &&
(tvp->tv_usec = lasttime.tv_usec + 1) >= 1000000) {
tvp->tv_sec++;
tvp->tv_usec -= 1000000;
}
lasttime = *tvp;
splx(s);
}
int
initcpu()
{
int i = 0;
/*
* reset after autoconfig probe:
* clear any memory errors, reset any pending interrupts.
*/
(*platform.bus_reset)(); /* XXX_cf_alpha */
return i;
}
void
consinit()
{
/*
* Nothing to do.
* Console is alredy initialized in platform.cons_init().
*/
return;
}
void
cpu_intr(status, cause, pc, ipending)
u_int32_t status;
u_int32_t cause;
u_int32_t pc;
u_int32_t ipending;
{
uvmexp.intrs++;
#ifdef VR41X1
if (ipending & MIPS_INT_MASK_5) {
/*
* Writing a value to the Compare register,
* as a side effect, clears the timer interrupt request.
*/
mips3_write_compare(mips3_cycle_count());
}
#endif
/* device interrupts */
#ifdef ENABLE_MIPS_TX3900
if (ipending & MIPS_HARD_INT_MASK) {
_splset((*platform.iointr)(status, cause, pc, ipending));
}
#else
if (ipending & MIPS3_HARD_INT_MASK) {
_splset((*platform.iointr)(status, cause, pc, ipending));
}
#endif
/* software simulated interrupt */
if ((ipending & MIPS_SOFT_INT_MASK_1)
|| (ssir && (status & MIPS_SOFT_INT_MASK_1))) {
#define DO_SIR(bit, fn) \
do { \
if (n & (bit)) { \
uvmexp.softs++; \
fn; \
} \
} while (0)
unsigned n;
n = ssir; ssir = 0;
_clrsoftintr(MIPS_SOFT_INT_MASK_1);
DO_SIR(SIR_NET, netintr());
#undef DO_SIR
}
/* 'softclock' interrupt */
if (ipending & MIPS_SOFT_INT_MASK_0) {
_clrsoftintr(MIPS_SOFT_INT_MASK_0);
uvmexp.softs++;
intrcnt[SOFTCLOCK_INTR]++;
softclock();
}
return;
}
/*
* Wait "n" microseconds. (scsi code needs this).
*/
void
delay(n)
int n;
{
DELAY(n);
}
/*
* Ensure all platform vectors are always initialized.
*/
void
unimpl_os_init()
{
panic("sysconf.init didnt set os_init");
}
void
unimpl_bus_reset()
{
panic("sysconf.init didnt set bus_reset");
}
void
unimpl_cons_init()
{
panic("sysconf.init didnt set cons_init");
}
void
unimpl_device_register(sc, arg)
struct device *sc;
void *arg;
{
panic("sysconf.init didnt set device_register");
}
int
unimpl_iointr(arg, arg2, arg3, arg4)
u_int32_t arg, arg2, arg3, arg4;
{
panic("sysconf.init didnt set iointr");
}
void
unimpl_clockintr(arg)
void *arg;
{
panic("sysconf.init didnt set clockintr");
}
int
unimpl_intr(mask, pc, statusreg, causereg)
u_int mask;
u_int pc;
u_int statusreg;
u_int causereg;
{
panic("sysconf.init didnt set intr");
}
void
unimpl_mem_init(kernend)
paddr_t kernend;
{
panic("sysconf.init didnt set memory");
}
void
unimpl_fb_init(kernend)
caddr_t *kernend;
{
panic("sysconf.init didnt set frame buffer");
}
void
unimpl_reboot(howto, bootstr)
int howto;
char *bootstr;
{
printf("platform depend reboot code is not implemented.\n");
}
unsigned
nullclkread()
{
return 0;
}
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