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|
/*
* 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/lock.h>
#include <sys/mutex.h>
#include <sys/ktr.h>
#include <sys/signalvar.h>
#include <sys/kernel.h>
#include <sys/proc.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 <sys/ucontext.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/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 <machine/sigframe.h>
int physmem = 0;
int cold = 1;
char pcpu0[PAGE_SIZE];
char uarea0[UAREA_PAGES * PAGE_SIZE];
struct trapframe frame0;
vm_offset_t kstack0;
vm_offset_t kstack0_phys;
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));
#ifdef COMPAT_43
void osendsig(sig_t, int, sigset_t *, u_long);
#endif
static int
sysctl_hw_physmem(SYSCTL_HANDLER_ARGS)
{
int error = sysctl_handle_int(oidp, 0, ctob(physmem), req);
return (error);
}
SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_INT|CTLFLAG_RD,
0, 0, sysctl_hw_physmem, "IU", "");
int Maxmem = 0;
static int chosen;
struct pmap ofw_pmap;
extern int ofmsr;
struct bat battable[16];
static void identifycpu(void);
struct kva_md_info kmi;
static void
powerpc_ofw_shutdown(void *junk, int howto)
{
if (howto & RB_HALT) {
OF_exit();
}
}
static void
cpu_startup(void *dummy)
{
/*
* 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);
}
}
vm_ksubmap_init(&kmi);
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 0x0000:
sprintf(model, "Simulator (psim)");
break;
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
void
powerpc_init(u_int startkernel, u_int endkernel, u_int basekernel, char *args)
{
struct pcpu *pc;
vm_offset_t off;
/*
* Initialize the console before printing anything.
*/
cninit();
/*
* XXX: Initialize the interrupt tables.
*/
bcopy(&decrint, (void *)EXC_DECR, (size_t)&decrsize);
bcopy(&dsitrap, (void *)EXC_DSI, (size_t)&dsisize);
bcopy(&isitrap, (void *)EXC_ISI, (size_t)&isisize);
/*
* Start initializing proc0 and thread0.
*/
proc_linkup(&proc0, &proc0.p_ksegrp, &proc0.p_kse, &thread0);
proc0.p_uarea = (struct user *)uarea0;
proc0.p_stats = &proc0.p_uarea->u_stats;
thread0.td_frame = &frame0;
/*
* Set up per-cpu data.
*/
pc = (struct pcpu *)(pcpu0 + PAGE_SIZE) - 1;
pcpu_init(pc, 0, sizeof(struct pcpu));
pc->pc_curthread = &thread0;
pc->pc_curpcb = thread0.td_pcb;
pc->pc_cpuid = 0;
/* pc->pc_mid = mid; */
__asm __volatile("mtsprg 0, %0" :: "r"(pc));
mutex_init();
/*
* Initialise virtual memory.
*/
ofmsr |= PSL_IR | PSL_DR;
pmap_bootstrap(startkernel, endkernel);
/*
* Initialize tunables.
*/
init_param1();
init_param2(physmem);
/*
* Finish setting up thread0.
*/
thread0.td_kstack = kstack0;
thread0.td_pcb = (struct pcb *)
(thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
/*
* Map and initialise the message buffer.
*/
for (off = 0; off < round_page(MSGBUF_SIZE); off += PAGE_SIZE)
pmap_kenter((vm_offset_t)msgbufp + off, msgbuf_phys + off);
msgbufinit(msgbufp, MSGBUF_SIZE);
}
#if 0 /* XXX: Old powerpc_init */
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 pcpu *pcpup;
/*
* 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);
/* Calculate the physical memory in the machine */
for (mp = allmem; mp->size; mp++)
physmem += btoc(mp->size);
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();
pmap_setavailmem(startkernel, endkernel);
proc_linkup(&proc0, &proc0.p_ksegrp, &proc0.p_kse, &thread0);
proc0uarea = (struct user *)pmap_steal_memory(UAREA_PAGES * PAGE_SIZE);
proc0kstack = pmap_steal_memory(KSTACK_PAGES * PAGE_SIZE);
proc0.p_uarea = proc0uarea;
thread0.td_kstack = proc0kstack;
thread0.td_pcb = (struct pcb *)
(thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
pcpup = pmap_steal_memory(round_page(sizeof(struct pcpu)));
/*
* XXX: Pass 0 as CPU id. This is bad. We need to work out
* XXX: which CPU we are somehow.
*/
pcpu_init(pcpup, 0, sizeof(struct pcpu));
__asm ("mtsprg 0, %0" :: "r"(pcpup));
/* Init basic tunables, hz etc */
init_param1();
init_param2(physmem);
PCPU_SET(curthread, &thread0);
/* XXX: NetBSDism I _think_. Not sure yet. */
#if 0
curpm = PCPU_GET(curpcb)->pcb_pmreal = PCPU_GET(curpcb)->pcb_pm = kernel_pmap;
#endif
mutex_init();
/*
* Initialise console.
*/
cninit();
#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();
restore_ofw_mapping();
PCPU_GET(next_asn) = 1; /* 0 used for proc0 pmap */
/* setup proc 0's pcb */
thread0.td_pcb->pcb_flags = 0; /* XXXKSE */
thread0.td_frame = &proc0_tf;
}
#endif
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 < 0x80000000) /* 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
#ifdef COMPAT_43
void
osendsig(sig_t catcher, int sig, sigset_t *mask, u_long code)
{
/* XXX: To be done */
return;
}
#endif
void
sendsig(sig_t catcher, int sig, sigset_t *mask, u_long code)
{
/* XXX: To be done */
return;
}
/*
* Stub to satisfy the reference to osigreturn in the syscall table. This
* is needed even for newer arches that don't support old signals because
* the syscall table is machine-independent.
*/
int
osigreturn(struct thread *td, struct osigreturn_args *uap)
{
return (nosys(td, (struct nosys_args *)uap));
}
int
sigreturn(struct thread *td, 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 thread *td, u_long entry, u_long stack, u_long ps_strings)
{
struct trapframe *tf;
struct ps_strings arginfo;
tf = trapframe(td);
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;
td->td_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|PSL_RI));
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 thread *td, struct reg *regs)
{
return (ENOSYS);
}
int
fill_dbregs(struct thread *td, struct dbreg *dbregs)
{
return (ENOSYS);
}
int
fill_fpregs(struct thread *td, struct fpreg *fpregs)
{
return (ENOSYS);
}
int
set_regs(struct thread *td, struct reg *regs)
{
return (ENOSYS);
}
int
set_dbregs(struct thread *td, struct dbreg *dbregs)
{
return (ENOSYS);
}
int
set_fpregs(struct thread *td, struct fpreg *fpregs)
{
return (ENOSYS);
}
int
ptrace_set_pc(struct thread *td, unsigned long addr)
{
/* XXX: coming soon... */
return (ENOSYS);
}
int
ptrace_single_step(struct thread *td)
{
/* XXX: coming soon... */
return (ENOSYS);
}
int
ptrace_clear_single_step(struct thread *td)
{
/* XXX: coming soon... */
return (ENOSYS);
}
/*
* Initialise a struct pcpu.
*/
void
cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t sz)
{
pcpu->pc_current_asngen = 1;
}
void
enable_fpu(struct pcb *pcb)
{
int msr, scratch;
if (!(pcb->pcb_flags & PCB_FPU)) {
bzero(&pcb->pcb_fpu, sizeof pcb->pcb_fpu);
pcb->pcb_flags |= PCB_FPU;
}
__asm volatile ("mfmsr %0; ori %1,%0,%2; mtmsr %1; isync"
: "=r"(msr), "=r"(scratch) : "K"(PSL_FP));
__asm volatile ("lfd 0,0(%0); mtfsf 0xff,0" :: "b"(&pcb->pcb_fpu.fpscr));
__asm ("lfd 0,0(%0);"
"lfd 1,8(%0);"
"lfd 2,16(%0);"
"lfd 3,24(%0);"
"lfd 4,32(%0);"
"lfd 5,40(%0);"
"lfd 6,48(%0);"
"lfd 7,56(%0);"
"lfd 8,64(%0);"
"lfd 9,72(%0);"
"lfd 10,80(%0);"
"lfd 11,88(%0);"
"lfd 12,96(%0);"
"lfd 13,104(%0);"
"lfd 14,112(%0);"
"lfd 15,120(%0);"
"lfd 16,128(%0);"
"lfd 17,136(%0);"
"lfd 18,144(%0);"
"lfd 19,152(%0);"
"lfd 20,160(%0);"
"lfd 21,168(%0);"
"lfd 22,176(%0);"
"lfd 23,184(%0);"
"lfd 24,192(%0);"
"lfd 25,200(%0);"
"lfd 26,208(%0);"
"lfd 27,216(%0);"
"lfd 28,224(%0);"
"lfd 29,232(%0);"
"lfd 30,240(%0);"
"lfd 31,248(%0)" :: "b"(&pcb->pcb_fpu.fpr[0]));
__asm volatile ("mtmsr %0; isync" :: "r"(msr));
}
void
save_fpu(struct pcb *pcb)
{
int msr, scratch;
__asm volatile ("mfmsr %0; ori %1,%0,%2; mtmsr %1; isync"
: "=r"(msr), "=r"(scratch) : "K"(PSL_FP));
__asm ("stfd 0,0(%0);"
"stfd 1,8(%0);"
"stfd 2,16(%0);"
"stfd 3,24(%0);"
"stfd 4,32(%0);"
"stfd 5,40(%0);"
"stfd 6,48(%0);"
"stfd 7,56(%0);"
"stfd 8,64(%0);"
"stfd 9,72(%0);"
"stfd 10,80(%0);"
"stfd 11,88(%0);"
"stfd 12,96(%0);"
"stfd 13,104(%0);"
"stfd 14,112(%0);"
"stfd 15,120(%0);"
"stfd 16,128(%0);"
"stfd 17,136(%0);"
"stfd 18,144(%0);"
"stfd 19,152(%0);"
"stfd 20,160(%0);"
"stfd 21,168(%0);"
"stfd 22,176(%0);"
"stfd 23,184(%0);"
"stfd 24,192(%0);"
"stfd 25,200(%0);"
"stfd 26,208(%0);"
"stfd 27,216(%0);"
"stfd 28,224(%0);"
"stfd 29,232(%0);"
"stfd 30,240(%0);"
"stfd 31,248(%0)" :: "b"(&pcb->pcb_fpu.fpr[0]));
__asm volatile ("mffs 0; stfd 0,0(%0)" :: "b"(&pcb->pcb_fpu.fpscr));
__asm volatile ("mtmsr %0; isync" :: "r"(msr));
}
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