NetBSD-5.0.2/sys/arch/evbmips/malta/machdep.c
/* $NetBSD: machdep.c,v 1.28 2008/07/02 17:28:55 ad Exp $ */
/*
* Copyright 2001, 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe and Simon Burge for Wasabi Systems, Inc.
*
* 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 for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 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. 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.
*
* @(#)machdep.c 8.3 (Berkeley) 1/12/94
* from: Utah Hdr: machdep.c 1.63 91/04/24
*/
/*
* Copyright (c) 1988 University of Utah.
*
* 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.
*
* @(#)machdep.c 8.3 (Berkeley) 1/12/94
* from: Utah Hdr: machdep.c 1.63 91/04/24
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.28 2008/07/02 17:28:55 ad Exp $");
#include "opt_ddb.h"
#include "opt_execfmt.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/buf.h>
#include <sys/reboot.h>
#include <sys/user.h>
#include <sys/mount.h>
#include <sys/kcore.h>
#include <sys/boot_flag.h>
#include <sys/termios.h>
#include <sys/ksyms.h>
#include <uvm/uvm_extern.h>
#include <dev/cons.h>
#include "ksyms.h"
#if NKSYMS || defined(DDB) || defined(LKM)
#include <machine/db_machdep.h>
#include <ddb/db_extern.h>
#endif
#include <machine/cpu.h>
#include <machine/psl.h>
#include <machine/yamon.h>
#include <evbmips/malta/autoconf.h>
#include <evbmips/malta/maltareg.h>
#include <evbmips/malta/maltavar.h>
#include "com.h"
#if NCOM > 0
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
int comcnrate = 38400; /* XXX should be config option */
#endif /* NCOM > 0 */
#define REGVAL(x) *((volatile u_int32_t *)(MIPS_PHYS_TO_KSEG1((x))))
struct malta_config malta_configuration;
/* For sysctl_hw. */
extern char cpu_model[];
/* Our exported CPU info; we can have only one. */
struct cpu_info cpu_info_store;
/* Maps for VM objects. */
struct vm_map *mb_map = NULL;
struct vm_map *phys_map = NULL;
int physmem; /* Total physical memory */
int netboot; /* Are we netbooting? */
yamon_env_var *yamon_envp;
phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX];
int mem_cluster_cnt;
void configure(void);
void mach_init(int, char **, yamon_env_var *, u_long);
/*
* safepri is a safe priority for sleep to set for a spin-wait during
* autoconfiguration or after a panic. Used as an argument to splx().
*/
int safepri = MIPS1_PSL_LOWIPL;
extern struct user *proc0paddr;
/*
* Do all the stuff that locore normally does before calling main().
*/
void
mach_init(int argc, char **argv, yamon_env_var *envp, u_long memsize)
{
struct malta_config *mcp = &malta_configuration;
bus_space_handle_t sh;
void *kernend, *v;
u_long first, last;
char *cp;
int freqok, i, howto;
uint8_t *brkres = (uint8_t *)MIPS_PHYS_TO_KSEG1(MALTA_BRKRES);
extern char edata[], end[];
*brkres = 0; /* Disable BREAK==reset on console */
/* Get the propaganda in early! */
led_display_str("NetBSD");
/*
* Clear the BSS segment.
*/
kernend = (void *)mips_round_page(end);
memset(edata, 0, (char *)kernend - edata);
/* save the yamon environment pointer */
yamon_envp = envp;
/* Use YAMON callbacks for early console I/O */
cn_tab = &yamon_promcd;
/*
* Set up the exception vectors and CPU-specific function
* vectors early on. We need the wbflush() vector set up
* before comcnattach() is called (or at least before the
* first printf() after that is called).
* Also clears the I+D caches.
*/
mips_vector_init();
/* set the VM page size */
uvm_setpagesize();
physmem = btoc(memsize);
/*
* Use YAMON's CPU frequency if available.
*/
freqok = yamon_setcpufreq(1);
gt_pci_init(&mcp->mc_pc, &mcp->mc_gt);
malta_bus_io_init(&mcp->mc_iot, mcp);
malta_bus_mem_init(&mcp->mc_memt, mcp);
malta_dma_init(mcp);
/*
* Calibrate the timer if YAMON failed to tell us.
*/
if (!freqok) {
bus_space_map(&mcp->mc_iot, MALTA_RTCADR, 2, 0, &sh);
malta_cal_timer(&mcp->mc_iot, sh);
bus_space_unmap(&mcp->mc_iot, sh, 2);
}
#if NCOM > 0
/*
* Delay to allow firmware putchars to complete.
* FIFO depth * character time.
* character time = (1000000 / (defaultrate / 10))
*/
delay(160000000 / comcnrate);
if (comcnattach(&mcp->mc_iot, MALTA_UART0ADR, comcnrate,
COM_FREQ, COM_TYPE_NORMAL,
(TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8) != 0)
panic("malta: unable to initialize serial console");
#else
panic("malta: not configured to use serial console");
#endif /* NCOM > 0 */
mem_clusters[0].start = 0;
mem_clusters[0].size = ctob(physmem);
mem_cluster_cnt = 1;
strcpy(cpu_model, "MIPS Malta Evaluation Board");
/*
* XXX: check argv[0] - do something if "gdb"???
*/
/*
* Look at arguments passed to us and compute boothowto.
*/
boothowto = RB_AUTOBOOT;
for (i = 1; i < argc; i++) {
for (cp = argv[i]; *cp; cp++) {
/* Ignore superfluous '-', if there is one */
if (*cp == '-')
continue;
howto = 0;
BOOT_FLAG(*cp, howto);
if (! howto)
printf("bootflag '%c' not recognised\n", *cp);
else
boothowto |= howto;
}
}
/*
* Load the rest of the available pages into the VM system.
*/
first = round_page(MIPS_KSEG0_TO_PHYS(kernend));
last = mem_clusters[0].start + mem_clusters[0].size;
uvm_page_physload(atop(first), atop(last), atop(first), atop(last),
VM_FREELIST_DEFAULT);
/*
* Initialize error message buffer (at end of core).
*/
mips_init_msgbuf();
pmap_bootstrap();
/*
* Allocate space for proc0's USPACE.
*/
v = (void *)uvm_pageboot_alloc(USPACE);
lwp0.l_addr = proc0paddr = (struct user *)v;
lwp0.l_md.md_regs = (struct frame *)((char *)v + USPACE) - 1;
proc0paddr->u_pcb.pcb_context[11] =
MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */
/*
* Initialize debuggers, and break into them, if appropriate.
*/
#if NKSYMS || defined(DDB) || defined(LKM)
ksyms_init(0, 0, 0);
#endif
#if defined(DDB)
if (boothowto & RB_KDB)
Debugger();
#endif
}
void
consinit(void)
{
/*
* Everything related to console initialization is done
* in mach_init().
*/
}
/*
* Allocate memory for variable-sized tables,
*/
void
cpu_startup()
{
vaddr_t minaddr, maxaddr;
char pbuf[9];
/*
* Good {morning,afternoon,evening,night}.
*/
printf("%s%s", copyright, version);
format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
printf("total memory = %s\n", pbuf);
/*
* Virtual memory is bootstrapped -- notify the bus spaces
* that memory allocation is now safe.
*/
malta_configuration.mc_mallocsafe = 1;
minaddr = 0;
/*
* Allocate a submap for physio.
*/
phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
VM_PHYS_SIZE, 0, FALSE, NULL);
/*
* (No need to allocate an mbuf cluster submap. Mbuf clusters
* are allocated via the pool allocator, and we use KSEG to
* map those pages.)
*/
format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free));
printf("avail memory = %s\n", pbuf);
}
int waittime = -1;
void
cpu_reboot(howto, bootstr)
int howto;
char *bootstr;
{
/* Take a snapshot before clobbering any registers. */
if (curproc)
savectx((struct user *)curpcb);
if (cold) {
howto |= RB_HALT;
goto haltsys;
}
/* If "always halt" was specified as a boot flag, obey. */
if (boothowto & RB_HALT)
howto |= RB_HALT;
boothowto = howto;
if ((howto & RB_NOSYNC) == 0 && (waittime < 0)) {
waittime = 0;
vfs_shutdown();
/*
* If we've been adjusting the clock, the todr
* will be out of synch; adjust it now.
*/
resettodr();
}
splhigh();
if (howto & RB_DUMP)
dumpsys();
haltsys:
doshutdownhooks();
if (howto & RB_HALT) {
printf("\n");
printf("The operating system has halted.\n");
printf("Please press any key to reboot.\n\n");
cnpollc(1); /* For proper keyboard command handling */
cngetc();
cnpollc(0);
}
printf("%s\n\n", ((howto & RB_HALT) != 0) ? "halted." : "rebooting...");
yamon_exit(boothowto);
printf("Oops, back from yamon_exit()\n\nResetting...");
REGVAL(MALTA_SOFTRES) = MALTA_GORESET;
/*
* Need a small delay here, otherwise we see the first few characters of
* the warning below.
*/
delay(80000);
printf("WARNING: reset failed!\nSpinning...");
for (;;)
/* spin forever */ ; /* XXX */
}