2aca0c28d3
are a really nasty interface that should have been killed long ago when 'ptrace(PT_[SG]ETREGS' etc came along. The entity that they operate on (struct user) will not be around much longer since it is part-per-process and part-per-thread in a post-KSE world. gdb does not actually use this except for the obscure 'info udot' command which does a hexdump of as much of the child's 'struct user' as it can get. It carries its own #defines so it doesn't break compiles.
986 lines
22 KiB
C
986 lines
22 KiB
C
/*
|
|
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
|
|
* Copyright (C) 1995, 1996 TooLs GmbH.
|
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* All rights reserved.
|
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*
|
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* 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:
|
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* This product includes software developed by TooLs GmbH.
|
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
|
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* derived from this software without specific prior written permission.
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*
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* 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,
|
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
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* 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
|
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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|
*/
|
|
/*
|
|
* Copyright (C) 2001 Benno Rice
|
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* 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",
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|
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".
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|
* 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.
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|
*/
|
|
|
|
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);
|
|
|
|
/*
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|
* 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,
|
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(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_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;
|
|
}
|