/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*/
/*
* Copyright (C) 2001 Benno Rice
* 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 Benno Rice ``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 TOOLS GMBH 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.
* $NetBSD: machdep.c,v 1.74.2.1 2000/11/01 16:13:48 tv Exp $
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include "opt_ddb.h"
#include "opt_compat.h"
#include "opt_msgbuf.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/eventhandler.h>
#include <sys/sysproto.h>
#include <sys/mutex.h>
#include <sys/ktr.h>
#include <sys/signalvar.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/reboot.h>
#include <sys/bio.h>
#include <sys/buf.h>
#include <sys/bus.h>
#include <sys/mbuf.h>
#include <sys/vmmeter.h>
#include <sys/msgbuf.h>
#include <sys/exec.h>
#include <sys/sysctl.h>
#include <sys/uio.h>
#include <sys/linker.h>
#include <sys/cons.h>
#include <net/netisr.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
#include <vm/vm_map.h>
#include <vm/vm_extern.h>
#include <vm/vm_object.h>
#include <vm/vm_pager.h>
#include <sys/user.h>
#include <sys/ptrace.h>
#include <machine/bat.h>
#include <machine/clock.h>
#include <machine/md_var.h>
#include <machine/reg.h>
#include <machine/fpu.h>
#include <machine/globaldata.h>
#include <machine/vmparam.h>
#include <machine/elf.h>
#include <machine/trap.h>
#include <machine/powerpc.h>
#include <dev/ofw/openfirm.h>
#include <ddb/ddb.h>
#include <sys/vnode.h>
#include <fs/procfs/procfs.h>
#include <machine/sigframe.h>
int cold = 1;
struct mtx sched_lock;
struct mtx Giant;
struct user *proc0paddr;
char machine[] = "powerpc";
SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0, "");
static char model[128];
SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD, model, 0, "");
char bootpath[256];
#ifdef DDB
/* start and end of kernel symbol table */
void *ksym_start, *ksym_end;
#endif /* DDB */
static void cpu_startup(void *);
SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL)
void powerpc_init(u_int, u_int, u_int, char *);
int save_ofw_mapping(void);
int restore_ofw_mapping(void);
void install_extint(void (*)(void));
void osendsig(sig_t, int, sigset_t *, u_long);
struct msgbuf *msgbufp = 0;
int bootverbose = 0, Maxmem = 0;
long dumplo;
vm_offset_t phys_avail[10];
static int chosen;
struct pmap ofw_pmap;
extern int ofmsr;
struct bat battable[16];
static void identifycpu(void);
static vm_offset_t buffer_sva, buffer_eva;
vm_offset_t clean_sva, clean_eva;
static vm_offset_t pager_sva, pager_eva;
static void
powerpc_ofw_shutdown(void *junk, int howto)
{
if (howto & RB_HALT) {
OF_exit();
}
}
static void
cpu_startup(void *dummy)
{
unsigned int i;
caddr_t v;
vm_offset_t maxaddr;
vm_size_t size;
vm_offset_t firstaddr;
vm_offset_t minaddr;
size = 0;
/*
* Good {morning,afternoon,evening,night}.
*/
identifycpu();
/* startrtclock(); */
#ifdef PERFMON
perfmon_init();
#endif
printf("real memory = %ld (%ldK bytes)\n", ptoa(Maxmem),
ptoa(Maxmem) / 1024);
/*
* Display any holes after the first chunk of extended memory.
*/
if (bootverbose) {
int indx;
printf("Physical memory chunk(s):\n");
for (indx = 0; phys_avail[indx + 1] != 0; indx += 2) {
int size1 = phys_avail[indx + 1] - phys_avail[indx];
printf("0x%08x - 0x%08x, %d bytes (%d pages)\n",
phys_avail[indx], phys_avail[indx + 1] - 1, size1,
size1 / PAGE_SIZE);
}
}
/*
* Calculate callout wheel size
*/
for (callwheelsize = 1, callwheelbits = 0;
callwheelsize < ncallout;
callwheelsize <<= 1, ++callwheelbits)
;
callwheelmask = callwheelsize - 1;
/*
* Allocate space for system data structures.
* The first available kernel virtual address is in "v".
* As pages of kernel virtual memory are allocated, "v" is incremented.
* As pages of memory are allocated and cleared,
* "firstaddr" is incremented.
* An index into the kernel page table corresponding to the
* virtual memory address maintained in "v" is kept in "mapaddr".
*/
/*
* Make two passes. The first pass calculates how much memory is
* needed and allocates it. The second pass assigns virtual
* addresses to the various data structures.
*/
firstaddr = 0;
again:
v = (caddr_t)firstaddr;
#define valloc(name, type, num) \
(name) = (type *)v; v = (caddr_t)((name)+(num))
#define valloclim(name, type, num, lim) \
(name) = (type *)v; v = (caddr_t)((lim) = ((name)+(num)))
valloc(callout, struct callout, ncallout);
valloc(callwheel, struct callout_tailq, callwheelsize);
/*
* The nominal buffer size (and minimum KVA allocation) is BKVASIZE.
* For the first 64MB of ram nominally allocate sufficient buffers to
* cover 1/4 of our ram. Beyond the first 64MB allocate additional
* buffers to cover 1/20 of our ram over 64MB.
*/
if (nbuf == 0) {
int factor;
factor = 4 * BKVASIZE / PAGE_SIZE;
nbuf = 50;
if (Maxmem > 1024)
nbuf += min((Maxmem - 1024) / factor, 16384 / factor);
if (Maxmem > 16384)
nbuf += (Maxmem - 16384) * 2 / (factor * 5);
}
nswbuf = max(min(nbuf/4, 64), 16);
valloc(swbuf, struct buf, nswbuf);
valloc(buf, struct buf, nbuf);
v = bufhashinit(v);
/*
* End of first pass, size has been calculated so allocate memory
*/
if (firstaddr == 0) {
size = (vm_size_t)(v - firstaddr);
firstaddr = (vm_offset_t)kmem_alloc(kernel_map,
round_page(size));
if (firstaddr == 0)
panic("startup: no room for tables");
goto again;
}
/*
* End of second pass, addresses have been assigned
*/
if ((vm_size_t)(v - firstaddr) != size)
panic("startup: table size inconsistency");
clean_map = kmem_suballoc(kernel_map, &clean_sva, &clean_eva,
(nbuf*BKVASIZE) + (nswbuf*MAXPHYS) + pager_map_size);
buffer_map = kmem_suballoc(clean_map, &buffer_sva, &buffer_eva,
(nbuf*BKVASIZE));
pager_map = kmem_suballoc(clean_map, &pager_sva, &pager_eva,
(nswbuf*MAXPHYS) + pager_map_size);
pager_map->system_map = 1;
exec_map = kmem_suballoc(kernel_map, &minaddr, &maxaddr,
(16*(ARG_MAX+(PAGE_SIZE*3))));
/*
* XXX: Mbuf system machine-specific initializations should
* go here, if anywhere.
*/
/*
* Initialize callouts
*/
SLIST_INIT(&callfree);
for (i = 0; i < ncallout; i++) {
callout_init(&callout[i], 0);
callout[i].c_flags = CALLOUT_LOCAL_ALLOC;
SLIST_INSERT_HEAD(&callfree, &callout[i], c_links.sle);
}
for (i = 0; i < callwheelsize; i++) {
TAILQ_INIT(&callwheel[i]);
}
mtx_init(&callout_lock, "callout", MTX_SPIN);
#if defined(USERCONFIG)
#if defined(USERCONFIG_BOOT)
if (1)
#else
if (boothowto & RB_CONFIG)
#endif
{
userconfig();
cninit(); /* the preferred console may have changed */
}
#endif
printf("avail memory = %ld (%ldK bytes)\n", ptoa(cnt.v_free_count),
ptoa(cnt.v_free_count) / 1024);
/*
* Set up buffers, so they can be used to read disk labels.
*/
bufinit();
vm_pager_bufferinit();
EVENTHANDLER_REGISTER(shutdown_final, powerpc_ofw_shutdown, 0,
SHUTDOWN_PRI_LAST);
#ifdef SMP
/*
* OK, enough kmem_alloc/malloc state should be up, lets get on with it!
*/
mp_start(); /* fire up the secondaries */
mp_announce();
#endif /* SMP */
}
void
identifycpu()
{
unsigned int pvr, version, revision;
/*
* Find cpu type (Do it by OpenFirmware?)
*/
__asm ("mfpvr %0" : "=r"(pvr));
version = pvr >> 16;
revision = pvr & 0xffff;
switch (version) {
case 0x0001:
sprintf(model, "601");
break;
case 0x0003:
sprintf(model, "603 (Wart)");
break;
case 0x0004:
sprintf(model, "604 (Zephyr)");
break;
case 0x0005:
sprintf(model, "602 (Galahad)");
break;
case 0x0006:
sprintf(model, "603e (Stretch)");
break;
case 0x0007:
if ((revision && 0xf000) == 0x0000)
sprintf(model, "603ev (Valiant)");
else
sprintf(model, "603r (Goldeneye)");
break;
case 0x0008:
if ((revision && 0xf000) == 0x0000)
sprintf(model, "G3 / 750 (Arthur)");
else
sprintf(model, "G3 / 755 (Goldfinger)");
break;
case 0x0009:
if ((revision && 0xf000) == 0x0000)
sprintf(model, "604e (Sirocco)");
else
sprintf(model, "604r (Mach V)");
break;
case 0x000a:
sprintf(model, "604r (Mach V)");
break;
case 0x000c:
sprintf(model, "G4 / 7400 (Max)");
break;
case 0x0014:
sprintf(model, "620 (Red October)");
break;
case 0x0081:
sprintf(model, "8240 (Kahlua)");
break;
case 0x8000:
sprintf(model, "G4 / 7450 (V'ger)");
break;
case 0x800c:
sprintf(model, "G4 / 7410 (Nitro)");
break;
case 0x8081:
sprintf(model, "8245 (Kahlua II)");
break;
default:
sprintf(model, "Version %x", version);
break;
}
sprintf(model + strlen(model), " (Revision %x)", revision);
printf("CPU: PowerPC %s\n", model);
}
extern char kernel_text[], _end[];
extern void *trapcode, *trapsize;
extern void *alitrap, *alisize;
extern void *dsitrap, *dsisize;
extern void *isitrap, *isisize;
extern void *decrint, *decrsize;
extern void *tlbimiss, *tlbimsize;
extern void *tlbdlmiss, *tlbdlmsize;
extern void *tlbdsmiss, *tlbdsmsize;
#if 0 /* XXX: interrupt handler. We'll get to this later */
extern void ext_intr(void);
#endif
#ifdef DDB
extern ddblow, ddbsize;
#endif
#ifdef IPKDB
extern ipkdblow, ipkdbsize;
#endif
static struct globaldata tmpglobal;
void
powerpc_init(u_int startkernel, u_int endkernel, u_int basekernel, char *args)
{
unsigned int exc, scratch;
struct mem_region *allmem, *availmem, *mp;
struct globaldata *globalp;
/*
* Set up BAT0 to only map the lowest 256 MB area
*/
battable[0].batl = BATL(0x00000000, BAT_M, BAT_PP_RW);
battable[0].batu = BATU(0x00000000, BAT_BL_256M, BAT_Vs);
/*
* Map PCI memory space.
*/
battable[0x8].batl = BATL(0x80000000, BAT_I, BAT_PP_RW);
battable[0x8].batu = BATU(0x80000000, BAT_BL_256M, BAT_Vs);
battable[0x9].batl = BATL(0x90000000, BAT_I, BAT_PP_RW);
battable[0x9].batu = BATU(0x90000000, BAT_BL_256M, BAT_Vs);
battable[0xa].batl = BATL(0xa0000000, BAT_I, BAT_PP_RW);
battable[0xa].batu = BATU(0xa0000000, BAT_BL_256M, BAT_Vs);
/*
* Map obio devices.
*/
battable[0xf].batl = BATL(0xf0000000, BAT_I, BAT_PP_RW);
battable[0xf].batu = BATU(0xf0000000, BAT_BL_256M, BAT_Vs);
/*
* Now setup fixed bat registers
*
* Note that we still run in real mode, and the BAT
* registers were cleared above.
*/
/* BAT0 used for initial 256 MB segment */
__asm __volatile ("mtibatl 0,%0; mtibatu 0,%1;"
"mtdbatl 0,%0; mtdbatu 0,%1;"
:: "r"(battable[0].batl), "r"(battable[0].batu));
/*
* Set up battable to map all RAM regions.
* This is here because mem_regions() call needs bat0 set up.
*/
mem_regions(&allmem, &availmem);
for (mp = allmem; mp->size; mp++) {
vm_offset_t pa = mp->start & 0xf0000000;
vm_offset_t end = mp->start + mp->size;
do {
u_int n = pa >> 28;
battable[n].batl = BATL(pa, BAT_M, BAT_PP_RW);
battable[n].batu = BATU(pa, BAT_BL_256M, BAT_Vs);
pa += 0x10000000;
} while (pa < end);
}
chosen = OF_finddevice("/chosen");
save_ofw_mapping();
proc0.p_addr = proc0paddr;
bzero(proc0.p_addr, sizeof *proc0.p_addr);
LIST_INIT(&proc0.p_contested);
/* XXX: NetBSDism I _think_. Not sure yet. */
#if 0
curpm = curpcb->pcb_pmreal = curpcb->pcb_pm = kernel_pmap;
#endif
/*
* Initialise some mutexes.
*/
mtx_init(&Giant, "Giant", MTX_DEF | MTX_RECURSE);
mtx_init(&sched_lock, "sched lock", MTX_SPIN | MTX_RECURSE);
mtx_init(&proc0.p_mtx, "process lock", MTX_DEF);
/*
* Initialise console.
*/
cninit();
mtx_lock(&Giant);
#ifdef __notyet__ /* Needs some rethinking regarding real/virtual OFW */
OF_set_callback(callback);
#endif
/*
* Set up trap vectors
*/
for (exc = EXC_RSVD; exc <= EXC_LAST; exc += 0x100) {
switch (exc) {
default:
bcopy(&trapcode, (void *)exc, (size_t)&trapsize);
break;
case EXC_DECR:
bcopy(&decrint, (void *)EXC_DECR, (size_t)&decrsize);
break;
#if 0 /* XXX: Not enabling these traps yet. */
case EXC_EXI:
/*
* This one is (potentially) installed during autoconf
*/
break;
case EXC_ALI:
bcopy(&alitrap, (void *)EXC_ALI, (size_t)&alisize);
break;
case EXC_DSI:
bcopy(&dsitrap, (void *)EXC_DSI, (size_t)&dsisize);
break;
case EXC_ISI:
bcopy(&isitrap, (void *)EXC_ISI, (size_t)&isisize);
break;
case EXC_IMISS:
bcopy(&tlbimiss, (void *)EXC_IMISS, (size_t)&tlbimsize);
break;
case EXC_DLMISS:
bcopy(&tlbdlmiss, (void *)EXC_DLMISS, (size_t)&tlbdlmsize);
break;
case EXC_DSMISS:
bcopy(&tlbdsmiss, (void *)EXC_DSMISS, (size_t)&tlbdsmsize);
break;
#if defined(DDB) || defined(IPKDB)
case EXC_TRC:
case EXC_PGM:
case EXC_BPT:
#if defined(DDB)
bcopy(&ddblow, (void *)exc, (size_t)&ddbsize);
#else
bcopy(&ipkdblow, (void *)exc, (size_t)&ipkdbsize);
#endif
break;
#endif /* DDB || IPKDB */
#endif
}
}
#if 0 /* XXX: coming soon... */
/*
* external interrupt handler install
*/
install_extint(ext_intr);
#endif
__syncicache((void *)EXC_RST, EXC_LAST - EXC_RST + 0x100);
/*
* Now enable translation (and machine checks/recoverable interrupts).
*/
__asm ("mfmsr %0" : "=r"(scratch));
scratch |= PSL_IR | PSL_DR | PSL_ME | PSL_RI;
__asm ("mtmsr %0" :: "r"(scratch));
ofmsr &= ~PSL_IP;
/*
* Parse arg string.
*/
#ifdef DDB
bcopy(args + strlen(args) + 1, &startsym, sizeof(startsym));
bcopy(args + strlen(args) + 5, &endsym, sizeof(endsym));
if (startsym == NULL || endsym == NULL)
startsym = endsym = NULL;
#endif
strcpy(bootpath, args);
args = bootpath;
while (*++args && *args != ' ');
if (*args) {
*args++ = 0;
while (*args) {
switch (*args++) {
case 'a':
boothowto |= RB_ASKNAME;
break;
case 's':
boothowto |= RB_SINGLE;
break;
case 'd':
boothowto |= RB_KDB;
break;
case 'v':
boothowto |= RB_VERBOSE;
break;
}
}
}
#ifdef DDB
ddb_init((int)((u_int)endsym - (u_int)startsym), startsym, endsym);
#endif
#ifdef IPKDB
/*
* Now trap to IPKDB
*/
ipkdb_init();
if (boothowto & RB_KDB)
ipkdb_connect(0);
#endif
/*
* Set the page size.
*/
#if 0
vm_set_page_size();
#endif
/*
* Initialize pmap module.
*/
pmap_bootstrap(startkernel, endkernel);
restore_ofw_mapping();
/*
* Setup the global data for the bootstrap cpu.
*/
globalp = (struct globaldata *) &tmpglobal;
/*
* XXX: Pass 0 as CPU id. This is bad. We need to work out
* XXX: which CPU we are somehow.
*/
globaldata_init(globalp, 0, sizeof(struct globaldata));
__asm ("mtsprg 0, %0" :: "r"(globalp));
PCPU_GET(next_asn) = 1; /* 0 used for proc0 pmap */
PCPU_SET(curproc, &proc0);
PCPU_SET(spinlocks, NULL);
}
static int N_mapping;
static struct {
vm_offset_t va;
int len;
vm_offset_t pa;
int mode;
} ofw_mapping[256];
int
save_ofw_mapping()
{
int mmui, mmu;
OF_getprop(chosen, "mmu", &mmui, 4);
mmu = OF_instance_to_package(mmui);
bzero(ofw_mapping, sizeof(ofw_mapping));
N_mapping =
OF_getprop(mmu, "translations", ofw_mapping, sizeof(ofw_mapping));
N_mapping /= sizeof(ofw_mapping[0]);
return 0;
}
int
restore_ofw_mapping()
{
int i;
struct vm_page pg;
pmap_pinit(&ofw_pmap);
ofw_pmap.pm_sr[KERNEL_SR] = KERNEL_SEGMENT;
for (i = 0; i < N_mapping; i++) {
vm_offset_t pa = ofw_mapping[i].pa;
vm_offset_t va = ofw_mapping[i].va;
int size = ofw_mapping[i].len;
if (va < 0x90000000) /* XXX */
continue;
while (size > 0) {
pg.phys_addr = pa;
pmap_enter(&ofw_pmap, va, &pg, VM_PROT_ALL,
VM_PROT_ALL);
pa += PAGE_SIZE;
va += PAGE_SIZE;
size -= PAGE_SIZE;
}
}
return 0;
}
void
bzero(void *buf, size_t len)
{
caddr_t p;
p = buf;
while (((vm_offset_t) p & (sizeof(u_long) - 1)) && len) {
*p++ = 0;
len--;
}
while (len >= sizeof(u_long) * 8) {
*(u_long*) p = 0;
*((u_long*) p + 1) = 0;
*((u_long*) p + 2) = 0;
*((u_long*) p + 3) = 0;
len -= sizeof(u_long) * 8;
*((u_long*) p + 4) = 0;
*((u_long*) p + 5) = 0;
*((u_long*) p + 6) = 0;
*((u_long*) p + 7) = 0;
p += sizeof(u_long) * 8;
}
while (len >= sizeof(u_long)) {
*(u_long*) p = 0;
len -= sizeof(u_long);
p += sizeof(u_long);
}
while (len) {
*p++ = 0;
len--;
}
}
#if 0
void
delay(unsigned n)
{
u_long tb;
do {
__asm __volatile("mftb %0" : "=r" (tb));
} while (n > (int)(tb & 0xffffffff));
}
#endif
void
osendsig(sig_t catcher, int sig, sigset_t *mask, u_long code)
{
/* XXX: To be done */
return;
}
void
sendsig(sig_t catcher, int sig, sigset_t *mask, u_long code)
{
/* XXX: To be done */
return;
}
int
osigreturn(struct proc *p, struct osigreturn_args *uap)
{
/* XXX: To be done */
return(ENOSYS);
}
int
sigreturn(struct proc *p, struct sigreturn_args *uap)
{
/* XXX: To be done */
return(ENOSYS);
}
void
cpu_boot(int howto)
{
}
/*
* Shutdown the CPU as much as possible.
*/
void
cpu_halt(void)
{
OF_exit();
}
/*
* Set set up registers on exec.
*/
void
setregs(struct proc *p, u_long entry, u_long stack, u_long ps_strings)
{
struct trapframe *tf;
struct ps_strings arginfo;
tf = trapframe(p);
bzero(tf, sizeof *tf);
tf->fixreg[1] = -roundup(-stack + 8, 16);
/*
* XXX Machine-independent code has already copied arguments and
* XXX environment to userland. Get them back here.
*/
(void)copyin((char *)PS_STRINGS, &arginfo, sizeof(arginfo));
/*
* Set up arguments for _start():
* _start(argc, argv, envp, obj, cleanup, ps_strings);
*
* Notes:
* - obj and cleanup are the auxilliary and termination
* vectors. They are fixed up by ld.elf_so.
* - ps_strings is a NetBSD extention, and will be
* ignored by executables which are strictly
* compliant with the SVR4 ABI.
*
* XXX We have to set both regs and retval here due to different
* XXX calling convention in trap.c and init_main.c.
*/
tf->fixreg[3] = arginfo.ps_nargvstr;
tf->fixreg[4] = (register_t)arginfo.ps_argvstr;
tf->fixreg[5] = (register_t)arginfo.ps_envstr;
tf->fixreg[6] = 0; /* auxillary vector */
tf->fixreg[7] = 0; /* termination vector */
tf->fixreg[8] = (register_t)PS_STRINGS; /* NetBSD extension */
tf->srr0 = entry;
tf->srr1 = PSL_MBO | PSL_USERSET | PSL_FE_DFLT;
p->p_addr->u_pcb.pcb_flags = 0;
}
extern void *extint, *extsize;
extern u_long extint_call;
void
install_extint(void (*handler)(void))
{
u_long offset;
int omsr, msr;
offset = (u_long)handler - (u_long)&extint_call;
#ifdef DIAGNOSTIC
if (offset > 0x1ffffff)
panic("install_extint: too far away");
#endif
msr = mfmsr();
mtmsr(msr & ~PSL_EE);
extint_call = (extint_call & 0xfc000003) | offset;
bcopy(&extint, (void *)EXC_EXI, (size_t)&extsize);
__syncicache((void *)&extint_call, sizeof extint_call);
__syncicache((void *)EXC_EXI, (int)&extsize);
mtmsr(msr);
}
#if !defined(DDB)
void
Debugger(const char *msg)
{
printf("Debugger(\"%s\") called.\n", msg);
}
#endif /* !defined(DDB) */
/* XXX: dummy {fill,set}_[fp]regs */
int
fill_regs(struct proc *p, struct reg *regs)
{
return (ENOSYS);
}
int
fill_fpregs(struct proc *p, struct fpreg *fpregs)
{
return (ENOSYS);
}
int
set_regs(struct proc *p, struct reg *regs)
{
return (ENOSYS);
}
int
set_fpregs(struct proc *p, struct fpreg *fpregs)
{
return (ENOSYS);
}
int
ptrace_set_pc(struct proc *p, unsigned long addr)
{
/* XXX: coming soon... */
return (ENOSYS);
}
int
ptrace_single_step(struct proc *p)
{
/* XXX: coming soon... */
return (ENOSYS);
}
int
ptrace_write_u(struct proc *p, vm_offset_t off, long data)
{
/* XXX: coming soon... */
return (ENOSYS);
}
int
ptrace_read_u_check(struct proc *p, vm_offset_t addr, size_t len)
{
/* XXX: coming soon... */
return (ENOSYS);
}
int
ptrace_clear_single_step(struct proc *p)
{
/* XXX: coming soon... */
return (ENOSYS);
}
/*
* Initialise a struct globaldata.
*/
void
globaldata_init(struct globaldata *globaldata, int cpuid, size_t sz)
{
bzero(globaldata, sz);
globaldata->gd_cpuid = cpuid;
globaldata->gd_next_asn = 0;
globaldata->gd_current_asngen = 1;
}
