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[src/trunk]: src/sys/arch/arc/arc Moved from /cvsroot/syssrc/sys/arch/pica/pi...
details: https://anonhg.NetBSD.org/src/rev/6799f79990b0
branches: trunk
changeset: 481106:6799f79990b0
user: soda <soda%NetBSD.org@localhost>
date: Sun Jan 23 20:09:12 2000 +0000
description:
Moved from /cvsroot/syssrc/sys/arch/pica/pica/machdep.c,v
diffstat:
sys/arch/arc/arc/machdep.c | 823 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 823 insertions(+), 0 deletions(-)
diffs (truncated from 827 to 300 lines):
diff -r c69ac5ef4e11 -r 6799f79990b0 sys/arch/arc/arc/machdep.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arc/arc/machdep.c Sun Jan 23 20:09:12 2000 +0000
@@ -0,0 +1,823 @@
+/* $NetBSD: machdep.c,v 1.27 2000/01/23 20:09:13 soda Exp $ */
+
+/*
+ * Copyright (c) 1988 University of Utah.
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * the Systems Programming Group of the University of Utah Computer
+ * Science Department, The Mach Operating System project at
+ * Carnegie-Mellon University and Ralph Campbell.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * from: @(#)machdep.c 8.3 (Berkeley) 1/12/94
+ */
+
+/* from: Utah Hdr: machdep.c 1.63 91/04/24 */
+
+#include "fs_mfs.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/signalvar.h>
+#include <sys/kernel.h>
+#include <sys/map.h>
+#include <sys/proc.h>
+#include <sys/buf.h>
+#include <sys/reboot.h>
+#include <sys/conf.h>
+#include <sys/file.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/msgbuf.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <sys/tty.h>
+#include <sys/user.h>
+#include <sys/exec.h>
+#include <vm/vm.h>
+#include <sys/sysctl.h>
+#include <sys/mount.h>
+#include <sys/syscallargs.h>
+#include <sys/kcore.h>
+
+#include <vm/vm_kern.h>
+#include <ufs/mfs/mfs_extern.h> /* mfs_initminiroot() */
+
+#include <machine/cpu.h>
+#include <machine/reg.h>
+#include <machine/pio.h>
+#include <machine/pte.h>
+#include <machine/autoconf.h>
+#include <mips/locore.h> /* wbflush() */
+#include <mips/cpuregs.h>
+#include <mips/psl.h>
+#ifdef DDB
+#include <mips/db_machdep.h>
+#endif
+
+#include <sys/exec_ecoff.h>
+
+#include <dev/cons.h>
+
+#include <pica/pica/pica.h>
+#include <pica/pica/picatype.h>
+
+#include <asc.h>
+
+#if NASC > 0
+#include <pica/dev/ascreg.h>
+#endif
+
+extern struct consdev *cn_tab;
+
+/* the following is used externally (sysctl_hw) */
+char machine[] = MACHINE; /* from <machine/param.h> */
+char cpu_model[30];
+
+vm_map_t buffer_map;
+
+int maxmem; /* max memory per process */
+int physmem; /* max supported memory, changes to actual */
+int memcfg; /* memory config register */
+int brdcfg; /* motherboard config register */
+int cpucfg; /* Value of processor config register */
+int cputype; /* Mother board type */
+int ncpu = 1; /* At least one cpu in the system */
+int isa_io_base; /* Base address of ISA io port space */
+int isa_mem_base; /* Base address of ISA memory space */
+
+phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX];
+int mem_cluster_cnt;
+
+/*
+ * Interrupt-blocking functions defined in locore. These names aren't used
+ * directly except here and in interrupt handlers.
+ */
+
+/* Block out one hardware interrupt-enable bit. */
+extern int Mach_spl0 __P((void)), Mach_spl1 __P((void));
+extern int Mach_spl2 __P((void)), Mach_spl3 __P((void));
+
+/* Block out nested interrupt-enable bits. */
+extern int cpu_spl0 __P((void)), cpu_spl1 __P((void));
+extern int cpu_spl2 __P((void)), cpu_spl3 __P((void));
+extern int splhigh __P((void));
+
+/*
+ * Instead, we declare the standard splXXX names as function pointers,
+ * and initialie them to point to the above functions to match
+ * the way a specific motherboard is wired up.
+ */
+int (*Mach_splbio) __P((void)) = splhigh;
+int (*Mach_splnet)__P((void)) = splhigh;
+int (*Mach_spltty)__P((void)) = splhigh;
+int (*Mach_splimp)__P((void)) = splhigh;
+int (*Mach_splclock)__P((void)) = splhigh;
+int (*Mach_splstatclock)__P((void)) = splhigh;
+
+/* initialize bss, etc. from kernel start, before main() is called. */
+extern void
+mach_init __P((int argc, char *argv[], u_int code));
+
+
+/*
+ * Pica video-console output (for output before console is autoconfigured)
+ */
+static void vid_scroll __P((void));
+void vid_print_string __P((const char *str));
+void vid_putchar __P((dev_t dev, char c));
+extern int atoi __P((const char *cp));
+
+#ifdef DEBUG
+/* stacktrace code violates prototypes to get callee's registers */
+extern void stacktrace __P((void)); /*XXX*/
+#endif
+
+
+
+/*
+ * safepri is a safe priority for sleep to set for a spin-wait
+ * during autoconfiguration or after a panic.
+ */
+int safepri = PSL_LOWIPL;
+
+extern void mips_vector_init __P((void));
+
+
+/*
+ * Do all the stuff that locore normally does before calling main().
+ * Process arguments passed to us by the BIOS.
+ * Reset mapping and set up mapping to hardware and init "wired" reg.
+ * Return the first page address following the system.
+ */
+void
+mach_init(argc, argv, code)
+ int argc;
+ char *argv[];
+ u_int code;
+{
+ register char *cp;
+ register int i;
+ struct tlb tlb;
+ u_long first, last;
+ caddr_t kernend, v;
+ vm_size_t size;
+ extern char edata[], end[];
+
+ /* clear the BSS segment in NetBSD code */
+ kernend = (caddr_t)pica_round_page(end);
+ bzero(edata, kernend - edata);
+
+ /*
+ * Set the VM page size.
+ */
+ vm_set_page_size();
+
+ /*
+ * Copy exception-dispatch code down to exception vector.
+ * Initialize locore-function vector.
+ * Clear out the I and D caches.
+ *
+ * XXX this may clobber PTEs needed by the BIOS.
+ */
+ mips_vector_init();
+
+#ifdef DDB
+ /*
+ * Initialize machine-dependent DDB commands, in case of early panic.
+ */
+ db_machine_init();
+#endif
+
+ /* check what model platform we are running on */
+ cputype = ACER_PICA_61; /* FIXME find systemtype */
+
+ /*
+ * Get config register now as mapped from BIOS since we are
+ * going to demap these addresses later. We want as may TLB
+ * entries as possible to do something useful :-).
+ */
+
+ switch (cputype) {
+ case ACER_PICA_61: /* ALI PICA 61 */
+ memcfg = in32(PICA_MEMORY_SIZE_REG);
+ brdcfg = in32(PICA_CONFIG_REG);
+ isa_io_base = PICA_V_ISA_IO;
+ isa_mem_base = PICA_V_ISA_MEM;
+ break;
+ default:
+ memcfg = -1;
+ break;
+ }
+
+ /* look at argv[0] and compute bootdev */
+ makebootdev(argv[0]);
+
+ /*
+ * Look at arguments passed to us and compute boothowto.
+ */
+ boothowto = RB_SINGLE;
+#ifdef KADB
+ boothowto |= RB_KDB;
+#endif
+ if (argc > 1) {
+ for (i = 1; i < argc; i++) {
+ if(strncmp("OSLOADOPTIONS=",argv[i],14) == 0) {
+ for (cp = argv[i]+14; *cp; cp++) {
+ switch (*cp) {
+ case 'a': /* autoboot */
+ boothowto &= ~RB_SINGLE;
+ break;
+
+ case 'd': /* use compiled in default root */
+ boothowto |= RB_DFLTROOT;
+ break;
+
+ case 'm': /* mini root present in memory */
+ boothowto |= RB_MINIROOT;
+ break;
+
+ case 'n': /* ask for names */
+ boothowto |= RB_ASKNAME;
+ break;
+
+ case 'N': /* don't ask for names */
+ boothowto &= ~RB_ASKNAME;
+ break;
+ }
+
+ }
+ }
+ }
+ }
+
+#ifdef MFS
+ /*
+ * Check to see if a mini-root was loaded into memory. It resides
+ * at the start of the next page just after the end of BSS.
+ */
+ if (boothowto & RB_MINIROOT) {
+ boothowto |= RB_DFLTROOT;
+ kernend += round_page(mfs_initminiroot(kernend));
+ }
+#endif
+
+ /*
+ * Init the mapping for u page(s) for proc0, pm_tlbpid 1.
+ * This also initializes nullproc for switch_exit().
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