479 lines
12 KiB
C
479 lines
12 KiB
C
/* $NetBSD: machdep.c,v 1.55 2015/06/26 22:11:10 matt Exp $ */
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/*-
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* Copyright (c) 2006 Itronix Inc.
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* All rights reserved.
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*
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* Portions written by Garrett D'Amore for Itronix Inc.
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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. The name of Itronix Inc. may not be used to endorse
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* or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department, The Mach Operating System project at
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* Carnegie-Mellon University and Ralph Campbell.
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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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)machdep.c 8.3 (Berkeley) 1/12/94
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* from: Utah Hdr: machdep.c 1.63 91/04/24
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.55 2015/06/26 22:11:10 matt Exp $");
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#include "opt_ddb.h"
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#include "opt_kgdb.h"
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#include "opt_memsize.h"
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#include "opt_modular.h"
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#include "opt_ethaddr.h"
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#include <sys/param.h>
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#include <sys/boot_flag.h>
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#include <sys/buf.h>
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#include <sys/device.h>
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#include <sys/kcore.h>
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#include <sys/kernel.h>
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#include <sys/ksyms.h>
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#include <sys/mount.h>
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#include <sys/reboot.h>
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#include <sys/systm.h>
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#include <sys/termios.h>
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#include <sys/cpu.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <uvm/uvm_extern.h>
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#include <dev/cons.h>
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#include "ksyms.h"
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#if NKSYMS || defined(DDB) || defined(MODULAR)
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#include <mips/db_machdep.h>
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#include <ddb/db_extern.h>
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#endif
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#include <mips/cache.h>
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#include <mips/locore.h>
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#include <machine/yamon.h>
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#include <evbmips/alchemy/board.h>
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#include <mips/alchemy/dev/aupcivar.h>
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#include <mips/alchemy/dev/aupcmciavar.h>
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#include <mips/alchemy/dev/auspivar.h>
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#include <mips/alchemy/include/aureg.h>
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#include <mips/alchemy/include/auvar.h>
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#include <mips/alchemy/include/aubusvar.h>
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#include "com.h"
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#if NCOM > 0
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int aucomcnrate = 0;
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#endif /* NAUCOM > 0 */
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#include "ohci.h"
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/* Maps for VM objects. */
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struct vm_map *phys_map = NULL;
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int maxmem; /* max memory per process */
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int mem_cluster_cnt;
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phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX];
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yamon_env_var *yamon_envp;
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struct mips_bus_space alchemy_cpuregt;
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void mach_init(int, char **, yamon_env_var *, u_long); /* XXX */
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void
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mach_init(int argc, char **argv, yamon_env_var *envp, u_long memsize)
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{
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bus_space_handle_t sh;
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void *kernend;
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const char *cp;
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int freqok, howto, i;
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const struct alchemy_board *board;
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extern char edata[], end[]; /* XXX */
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board = board_info();
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KASSERT(board != NULL);
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/* clear the BSS segment */
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kernend = (void *)mips_round_page(end);
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memset(edata, 0, (char *)kernend - edata);
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/* set CPU model info for sysctl_hw */
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cpu_setmodel("%s", board->ab_name);
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/* save the yamon environment pointer */
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yamon_envp = envp;
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/* Use YAMON callbacks for early console I/O */
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cn_tab = &yamon_promcd;
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/*
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* Set up the exception vectors and CPU-specific function
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* vectors early on. We need the wbflush() vector set up
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* before comcnattach() is called (or at least before the
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* first printf() after that is called).
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* Sets up mips_cpu_flags that may be queried by other
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* functions called during startup.
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* Also clears the I+D caches.
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*/
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mips_vector_init(NULL, false);
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/*
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* Set the VM page size.
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*/
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uvm_setpagesize();
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/*
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* Use YAMON's CPU frequency if available.
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*/
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freqok = yamon_setcpufreq(1);
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/*
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* Initialize bus space tags.
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*/
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au_cpureg_bus_mem_init(&alchemy_cpuregt, &alchemy_cpuregt);
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aubus_st = &alchemy_cpuregt;
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/*
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* Calibrate the timer if YAMON failed to tell us.
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*/
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if (!freqok) {
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bus_space_map(aubus_st, PC_BASE, PC_SIZE, 0, &sh);
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au_cal_timers(aubus_st, sh);
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bus_space_unmap(aubus_st, sh, PC_SIZE);
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}
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/*
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* Perform board-specific initialization.
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*/
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board->ab_init();
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/*
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* Bring up the console.
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*/
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#if NCOM > 0
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#ifdef CONSPEED
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if (aucomcnrate == 0)
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aucomcnrate = CONSPEED;
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#else /* !CONSPEED */
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/*
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* Learn default console speed. We use the YAMON environment,
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* though we could probably also figure it out by checking the
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* aucom registers directly.
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*/
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if ((aucomcnrate == 0) && ((cp = yamon_getenv("modetty0")) != NULL))
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aucomcnrate = strtoul(cp, NULL, 0);
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if (aucomcnrate == 0) {
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printf("FATAL: `modetty0' YAMON variable not set. Set it\n");
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printf(" to the speed of the console and try again.\n");
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printf(" Or, build a kernel with the `CONSPEED' "
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"option.\n");
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panic("mach_init");
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}
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#endif /* CONSPEED */
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/*
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* Delay to allow firmware putchars to complete.
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* FIFO depth * character time.
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* character time = (1000000 / (defaultrate / 10))
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*/
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delay(160000000 / aucomcnrate);
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if (com_aubus_cnattach(UART0_BASE, aucomcnrate) != 0)
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panic("mach_init: unable to initialize serial console");
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#else /* NCOM > 0 */
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panic("mach_init: not configured to use serial console");
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#endif /* NAUCOM > 0 */
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/*
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* Look at arguments passed to us and compute boothowto.
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*/
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boothowto = RB_AUTOBOOT;
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#ifdef KADB
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boothowto |= RB_KDB;
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#endif
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for (i = 1; i < argc; i++) {
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for (cp = argv[i]; *cp; cp++) {
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/* Ignore superfluous '-', if there is one */
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if (*cp == '-')
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continue;
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howto = 0;
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BOOT_FLAG(*cp, howto);
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if (! howto)
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printf("bootflag '%c' not recognised\n", *cp);
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else
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boothowto |= howto;
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}
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}
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/*
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* Determine the memory size. Use the `memsize' PMON
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* variable. If that's not available, panic.
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*
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* Note: Reserve the first page! That's where the trap
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* vectors are located.
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*/
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#if defined(MEMSIZE)
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memsize = MEMSIZE;
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#else
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if (memsize == 0) {
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if ((cp = yamon_getenv("memsize")) != NULL)
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memsize = strtoul(cp, NULL, 0);
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else {
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printf("FATAL: `memsize' YAMON variable not set. Set it to\n");
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printf(" the amount of memory (in MB) and try again.\n");
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printf(" Or, build a kernel with the `MEMSIZE' "
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"option.\n");
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panic("mach_init");
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}
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}
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#endif /* MEMSIZE */
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printf("Memory size: 0x%08lx\n", memsize);
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physmem = btoc(memsize);
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mem_clusters[mem_cluster_cnt].start = PAGE_SIZE;
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mem_clusters[mem_cluster_cnt].size =
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memsize - mem_clusters[mem_cluster_cnt].start;
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mem_cluster_cnt++;
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/*
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* Load the rest of the available pages into the VM system.
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*/
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mips_page_physload(MIPS_KSEG0_START, (vaddr_t)kernend,
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mem_clusters, mem_cluster_cnt, NULL, 0);
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/*
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* Initialize message buffer (at end of core).
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*/
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mips_init_msgbuf();
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/*
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* Initialize the virtual memory system.
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*/
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pmap_bootstrap();
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/*
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* Allocate uarea page for lwp0 and set it.
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*/
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mips_init_lwp0_uarea();
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/*
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* Initialize debuggers, and break into them, if appropriate.
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*/
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#ifdef DDB
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if (boothowto & RB_KDB)
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Debugger();
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#endif
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}
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void
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consinit(void)
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{
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/*
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* Everything related to console initialization is done
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* in mach_init().
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*/
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}
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void
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cpu_startup(void)
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{
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cpu_startup_common();
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}
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void
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cpu_reboot(int howto, char *bootstr)
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{
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static int waittime = -1;
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const struct alchemy_board *board;
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/* Take a snapshot before clobbering any registers. */
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savectx(curpcb);
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board = board_info();
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KASSERT(board != NULL);
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/* If "always halt" was specified as a boot flag, obey. */
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if (boothowto & RB_HALT)
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howto |= RB_HALT;
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boothowto = howto;
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/* If system is cold, just halt. */
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if (cold) {
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boothowto |= RB_HALT;
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goto haltsys;
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}
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if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) {
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waittime = 0;
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/*
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* Synchronize the disks....
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*/
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vfs_shutdown();
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/*
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* If we've been adjusting the clock, the todr
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* will be out of synch; adjust it now.
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*/
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resettodr();
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}
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/* Disable interrupts. */
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splhigh();
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if (boothowto & RB_DUMP)
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dumpsys();
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haltsys:
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/* Run any shutdown hooks. */
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doshutdownhooks();
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pmf_system_shutdown(boothowto);
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if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN)
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if (board && board->ab_poweroff)
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board->ab_poweroff();
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/*
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* YAMON may autoboot (depending on settings), and we cannot pass
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* flags to it (at least I haven't figured out how to yet), so
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* we "pseudo-halt" now.
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*/
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if (boothowto & RB_HALT) {
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printf("\n");
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printf("The operating system has halted.\n");
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printf("Please press any key to reboot.\n\n");
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cnpollc(1); /* For proper keyboard command handling */
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cngetc();
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cnpollc(0);
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}
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printf("reseting board...\n\n");
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/*
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* Try to use board-specific reset logic, which might involve a better
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* hardware reset.
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*/
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if (board->ab_reboot)
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board->ab_reboot();
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#if 1
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/* XXX
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* For some reason we are leaving the ethernet MAC in a state where
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* YAMON isn't happy with it. So just call the reset vector (grr,
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* Alchemy YAMON doesn't have a "reset" command).
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*/
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mips_icache_sync_all();
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mips_dcache_wbinv_all();
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__asm volatile("jr %0" :: "r"(MIPS_RESET_EXC_VEC));
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#else
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printf("%s\n\n", ((howto & RB_HALT) != 0) ? "halted." : "rebooting...");
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yamon_exit(boothowto);
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printf("Oops, back from yamon_exit()\n\nSpinning...");
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#endif
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for (;;)
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/* spin forever */ ; /* XXX */
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/*NOTREACHED*/
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}
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/*
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* Export our interrupt map function so aupci can find it.
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*/
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int
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aupci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
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{
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const struct alchemy_board *board;
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board = board_info();
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if (board->ab_pci_intr_map != NULL)
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return (board->ab_pci_intr_map(pa, ihp));
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return 1;
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}
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struct aupcmcia_machdep *
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aupcmcia_machdep(void)
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{
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const struct alchemy_board *board;
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board = board_info();
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return (board->ab_pcmcia);
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}
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const struct auspi_machdep *
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auspi_machdep(bus_addr_t ba)
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{
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const struct alchemy_board *board;
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board = board_info();
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if (board->ab_spi != NULL)
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return (board->ab_spi(ba));
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return NULL;
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}
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