1053 lines
23 KiB
C
1053 lines
23 KiB
C
/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* 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
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* 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
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* 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;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* 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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*/
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/*
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* Copyright (C) 2001 Benno Rice
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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
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* 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;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* 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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* $NetBSD: machdep.c,v 1.74.2.1 2000/11/01 16:13:48 tv Exp $
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include "opt_ddb.h"
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#include "opt_compat.h"
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#include "opt_msgbuf.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/eventhandler.h>
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#include <sys/sysproto.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/ktr.h>
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#include <sys/signalvar.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/malloc.h>
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#include <sys/reboot.h>
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <sys/bus.h>
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#include <sys/mbuf.h>
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#include <sys/vmmeter.h>
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#include <sys/msgbuf.h>
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#include <sys/exec.h>
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#include <sys/sysctl.h>
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#include <sys/uio.h>
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#include <sys/linker.h>
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#include <sys/cons.h>
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#include <sys/ucontext.h>
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#include <net/netisr.h>
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#include <vm/vm.h>
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#include <vm/vm_kern.h>
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#include <vm/vm_page.h>
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#include <vm/vm_map.h>
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#include <vm/vm_extern.h>
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#include <vm/vm_object.h>
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#include <vm/vm_pager.h>
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#include <sys/user.h>
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#include <sys/ptrace.h>
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#include <machine/bat.h>
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#include <machine/clock.h>
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#include <machine/md_var.h>
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#include <machine/reg.h>
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#include <machine/fpu.h>
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#include <machine/vmparam.h>
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#include <machine/elf.h>
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#include <machine/trap.h>
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#include <machine/powerpc.h>
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#include <dev/ofw/openfirm.h>
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#include <ddb/ddb.h>
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#include <sys/vnode.h>
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#include <machine/sigframe.h>
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int physmem = 0;
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int cold = 1;
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char pcpu0[PAGE_SIZE];
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char uarea0[UAREA_PAGES * PAGE_SIZE];
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struct trapframe frame0;
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vm_offset_t kstack0;
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vm_offset_t kstack0_phys;
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char machine[] = "powerpc";
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SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0, "");
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static char model[128];
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SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD, model, 0, "");
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char bootpath[256];
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#ifdef DDB
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/* start and end of kernel symbol table */
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void *ksym_start, *ksym_end;
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#endif /* DDB */
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static void cpu_startup(void *);
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SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL)
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void powerpc_init(u_int, u_int, u_int, char *);
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int save_ofw_mapping(void);
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int restore_ofw_mapping(void);
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void install_extint(void (*)(void));
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#ifdef COMPAT_43
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void osendsig(sig_t, int, sigset_t *, u_long);
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#endif
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static int
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sysctl_hw_physmem(SYSCTL_HANDLER_ARGS)
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{
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int error = sysctl_handle_int(oidp, 0, ctob(physmem), req);
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return (error);
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}
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SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_INT|CTLFLAG_RD,
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0, 0, sysctl_hw_physmem, "IU", "");
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int Maxmem = 0;
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static int chosen;
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struct pmap ofw_pmap;
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extern int ofmsr;
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struct bat battable[16];
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static void identifycpu(void);
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struct kva_md_info kmi;
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static void
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powerpc_ofw_shutdown(void *junk, int howto)
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{
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if (howto & RB_HALT) {
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OF_exit();
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}
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}
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static void
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cpu_startup(void *dummy)
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{
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/*
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* Good {morning,afternoon,evening,night}.
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*/
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identifycpu();
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/* startrtclock(); */
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#ifdef PERFMON
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perfmon_init();
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#endif
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printf("real memory = %ld (%ldK bytes)\n", ptoa(Maxmem),
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ptoa(Maxmem) / 1024);
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/*
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* Display any holes after the first chunk of extended memory.
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*/
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if (bootverbose) {
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int indx;
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printf("Physical memory chunk(s):\n");
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for (indx = 0; phys_avail[indx + 1] != 0; indx += 2) {
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int size1 = phys_avail[indx + 1] - phys_avail[indx];
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printf("0x%08x - 0x%08x, %d bytes (%d pages)\n",
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phys_avail[indx], phys_avail[indx + 1] - 1, size1,
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size1 / PAGE_SIZE);
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}
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}
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vm_ksubmap_init(&kmi);
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printf("avail memory = %ld (%ldK bytes)\n", ptoa(cnt.v_free_count),
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ptoa(cnt.v_free_count) / 1024);
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/*
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* Set up buffers, so they can be used to read disk labels.
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*/
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bufinit();
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vm_pager_bufferinit();
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EVENTHANDLER_REGISTER(shutdown_final, powerpc_ofw_shutdown, 0,
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SHUTDOWN_PRI_LAST);
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#ifdef SMP
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/*
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* OK, enough kmem_alloc/malloc state should be up, lets get on with it!
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*/
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mp_start(); /* fire up the secondaries */
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mp_announce();
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#endif /* SMP */
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}
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void
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identifycpu()
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{
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unsigned int pvr, version, revision;
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/*
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* Find cpu type (Do it by OpenFirmware?)
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*/
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__asm ("mfpvr %0" : "=r"(pvr));
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version = pvr >> 16;
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revision = pvr & 0xffff;
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switch (version) {
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case 0x0000:
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sprintf(model, "Simulator (psim)");
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break;
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case 0x0001:
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sprintf(model, "601");
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break;
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case 0x0003:
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sprintf(model, "603 (Wart)");
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break;
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case 0x0004:
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sprintf(model, "604 (Zephyr)");
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break;
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case 0x0005:
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sprintf(model, "602 (Galahad)");
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break;
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case 0x0006:
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sprintf(model, "603e (Stretch)");
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break;
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case 0x0007:
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if ((revision && 0xf000) == 0x0000)
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sprintf(model, "603ev (Valiant)");
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else
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sprintf(model, "603r (Goldeneye)");
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break;
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case 0x0008:
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if ((revision && 0xf000) == 0x0000)
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sprintf(model, "G3 / 750 (Arthur)");
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else
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sprintf(model, "G3 / 755 (Goldfinger)");
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break;
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case 0x0009:
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if ((revision && 0xf000) == 0x0000)
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sprintf(model, "604e (Sirocco)");
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else
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sprintf(model, "604r (Mach V)");
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break;
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case 0x000a:
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sprintf(model, "604r (Mach V)");
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break;
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case 0x000c:
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sprintf(model, "G4 / 7400 (Max)");
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break;
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case 0x0014:
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sprintf(model, "620 (Red October)");
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break;
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case 0x0081:
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sprintf(model, "8240 (Kahlua)");
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break;
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case 0x8000:
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sprintf(model, "G4 / 7450 (V'ger)");
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break;
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case 0x800c:
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sprintf(model, "G4 / 7410 (Nitro)");
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break;
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case 0x8081:
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sprintf(model, "8245 (Kahlua II)");
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break;
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default:
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sprintf(model, "Version %x", version);
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break;
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}
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sprintf(model + strlen(model), " (Revision %x)", revision);
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printf("CPU: PowerPC %s\n", model);
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}
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extern char kernel_text[], _end[];
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extern void *trapcode, *trapsize;
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extern void *alitrap, *alisize;
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extern void *dsitrap, *dsisize;
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extern void *isitrap, *isisize;
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extern void *decrint, *decrsize;
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extern void *tlbimiss, *tlbimsize;
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extern void *tlbdlmiss, *tlbdlmsize;
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extern void *tlbdsmiss, *tlbdsmsize;
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#if 0 /* XXX: interrupt handler. We'll get to this later */
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extern void ext_intr(void);
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#endif
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#ifdef DDB
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extern ddblow, ddbsize;
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#endif
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#ifdef IPKDB
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extern ipkdblow, ipkdbsize;
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#endif
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void
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powerpc_init(u_int startkernel, u_int endkernel, u_int basekernel, char *args)
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{
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struct pcpu *pc;
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vm_offset_t off;
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/*
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* Initialize the console before printing anything.
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*/
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cninit();
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/*
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* XXX: Initialize the interrupt tables.
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*/
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bcopy(&decrint, (void *)EXC_DECR, (size_t)&decrsize);
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bcopy(&dsitrap, (void *)EXC_DSI, (size_t)&dsisize);
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bcopy(&isitrap, (void *)EXC_ISI, (size_t)&isisize);
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bcopy(&trapcode, (void *)EXC_SC, (size_t)&trapsize);
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/*
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* Start initializing proc0 and thread0.
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*/
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proc_linkup(&proc0, &proc0.p_ksegrp, &proc0.p_kse, &thread0);
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proc0.p_uarea = (struct user *)uarea0;
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proc0.p_stats = &proc0.p_uarea->u_stats;
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thread0.td_frame = &frame0;
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/*
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* Set up per-cpu data.
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*/
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pc = (struct pcpu *)(pcpu0 + PAGE_SIZE) - 1;
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pcpu_init(pc, 0, sizeof(struct pcpu));
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pc->pc_curthread = &thread0;
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pc->pc_curpcb = thread0.td_pcb;
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pc->pc_cpuid = 0;
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/* pc->pc_mid = mid; */
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__asm __volatile("mtsprg 0, %0" :: "r"(pc));
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mutex_init();
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/*
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* Initialise virtual memory.
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*/
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ofmsr |= PSL_IR | PSL_DR;
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pmap_bootstrap(startkernel, endkernel);
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/*
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* Initialize tunables.
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*/
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init_param1();
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init_param2(physmem);
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/*
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* Finish setting up thread0.
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*/
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thread0.td_kstack = kstack0;
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thread0.td_pcb = (struct pcb *)
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(thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
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/*
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* Map and initialise the message buffer.
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*/
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for (off = 0; off < round_page(MSGBUF_SIZE); off += PAGE_SIZE)
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pmap_kenter((vm_offset_t)msgbufp + off, msgbuf_phys + off);
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msgbufinit(msgbufp, MSGBUF_SIZE);
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}
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#if 0 /* XXX: Old powerpc_init */
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void
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powerpc_init(u_int startkernel, u_int endkernel, u_int basekernel, char *args)
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{
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unsigned int exc, scratch;
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struct mem_region *allmem, *availmem, *mp;
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struct pcpu *pcpup;
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/*
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* Set up BAT0 to only map the lowest 256 MB area
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*/
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battable[0].batl = BATL(0x00000000, BAT_M, BAT_PP_RW);
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battable[0].batu = BATU(0x00000000, BAT_BL_256M, BAT_Vs);
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/*
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* Map PCI memory space.
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*/
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battable[0x8].batl = BATL(0x80000000, BAT_I, BAT_PP_RW);
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battable[0x8].batu = BATU(0x80000000, BAT_BL_256M, BAT_Vs);
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battable[0x9].batl = BATL(0x90000000, BAT_I, BAT_PP_RW);
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battable[0x9].batu = BATU(0x90000000, BAT_BL_256M, BAT_Vs);
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battable[0xa].batl = BATL(0xa0000000, BAT_I, BAT_PP_RW);
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battable[0xa].batu = BATU(0xa0000000, BAT_BL_256M, BAT_Vs);
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/*
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* Map obio devices.
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*/
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battable[0xf].batl = BATL(0xf0000000, BAT_I, BAT_PP_RW);
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battable[0xf].batu = BATU(0xf0000000, BAT_BL_256M, BAT_Vs);
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/*
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* Now setup fixed bat registers
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*
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* Note that we still run in real mode, and the BAT
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* registers were cleared above.
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*/
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/* BAT0 used for initial 256 MB segment */
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__asm __volatile ("mtibatl 0,%0; mtibatu 0,%1;"
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"mtdbatl 0,%0; mtdbatu 0,%1;"
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:: "r"(battable[0].batl), "r"(battable[0].batu));
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/*
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* Set up battable to map all RAM regions.
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* This is here because mem_regions() call needs bat0 set up.
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*/
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mem_regions(&allmem, &availmem);
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/* Calculate the physical memory in the machine */
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for (mp = allmem; mp->size; mp++)
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physmem += btoc(mp->size);
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for (mp = allmem; mp->size; mp++) {
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vm_offset_t pa = mp->start & 0xf0000000;
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vm_offset_t end = mp->start + mp->size;
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do {
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u_int n = pa >> 28;
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battable[n].batl = BATL(pa, BAT_M, BAT_PP_RW);
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battable[n].batu = BATU(pa, BAT_BL_256M, BAT_Vs);
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pa += 0x10000000;
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} while (pa < end);
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}
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chosen = OF_finddevice("/chosen");
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save_ofw_mapping();
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pmap_setavailmem(startkernel, endkernel);
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proc_linkup(&proc0, &proc0.p_ksegrp, &proc0.p_kse, &thread0);
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proc0uarea = (struct user *)pmap_steal_memory(UAREA_PAGES * PAGE_SIZE);
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proc0kstack = pmap_steal_memory(KSTACK_PAGES * PAGE_SIZE);
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proc0.p_uarea = proc0uarea;
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thread0.td_kstack = proc0kstack;
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thread0.td_pcb = (struct pcb *)
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(thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
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pcpup = pmap_steal_memory(round_page(sizeof(struct pcpu)));
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/*
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* XXX: Pass 0 as CPU id. This is bad. We need to work out
|
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* XXX: which CPU we are somehow.
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*/
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pcpu_init(pcpup, 0, sizeof(struct pcpu));
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__asm ("mtsprg 0, %0" :: "r"(pcpup));
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|
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/* Init basic tunables, hz etc */
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init_param1();
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init_param2(physmem);
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PCPU_SET(curthread, &thread0);
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|
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/* XXX: NetBSDism I _think_. Not sure yet. */
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#if 0
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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));
|
|
}
|