NetBSD-5.0.2/sys/arch/newsmips/newsmips/machdep.c
/* $NetBSD: machdep.c,v 1.98 2008/07/02 17:28:56 ad Exp $ */
/*
* 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
*/
/*
* 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
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.98 2008/07/02 17:28:56 ad Exp $");
/* from: Utah Hdr: machdep.c 1.63 91/04/24 */
#include "fs_mfs.h"
#include "opt_ddb.h"
#include "opt_execfmt.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/signalvar.h>
#include <sys/kernel.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/device.h>
#include <sys/user.h>
#include <sys/exec.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
#include <sys/kcore.h>
#include <sys/ksyms.h>
#include <uvm/uvm_extern.h>
#include <ufs/mfs/mfs_extern.h> /* mfs_initminiroot() */
#include <machine/cpu.h>
#include <machine/intr.h>
#include <machine/reg.h>
#include <machine/psl.h>
#include <machine/pte.h>
#include <machine/autoconf.h>
#include <machine/bootinfo.h>
#include <machine/apbus.h>
#include <machine/apcall.h>
#include <mips/cache.h>
#include <mips/locore.h>
#define _NEWSMIPS_BUS_DMA_PRIVATE
#include <machine/bus.h>
#ifdef DDB
#include <machine/db_machdep.h>
#include <ddb/db_access.h>
#include <ddb/db_extern.h>
#include <ddb/db_sym.h>
#endif
#include <machine/adrsmap.h>
#include <machine/machConst.h>
#include <newsmips/newsmips/machid.h>
#include <dev/cons.h>
#include "ksyms.h"
/* 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;
char *bootinfo = NULL; /* pointer to bootinfo structure */
int physmem; /* max supported memory, changes to actual */
int systype; /* what type of NEWS we are */
struct apbus_sysinfo *_sip = NULL;
phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX];
int mem_cluster_cnt;
struct idrom idrom;
void (*hardware_intr)(uint32_t, uint32_t, uint32_t, uint32_t);
void (*enable_intr)(void);
void (*disable_intr)(void);
void (*enable_timer)(void);
/*
* Local functions.
*/
/* initialize bss, etc. from kernel start, before main() is called. */
void mach_init(int, int, int, int);
void prom_halt(int) __attribute__((__noreturn__));
void to_monitor(int) __attribute__((__noreturn__));
#ifdef DEBUG
/* stacktrace code violates prototypes to get callee's registers */
extern void stacktrace(void); /*XXX*/
#endif
/*
* 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().
* XXX disables interrupt 5 to disable mips3 on-chip clock, which also
* disables mips1 FPU interrupts.
*/
int safepri = MIPS3_PSL_LOWIPL; /* XXX */
/*
* This is a mask of bits to clear in the SR when we go to a
* given interrupt priority level.
*/
const uint32_t ipl_sr_bits[_IPL_N] = {
[IPL_NONE] = 0,
[IPL_SOFTCLOCK] =
MIPS_SOFT_INT_MASK_0,
[IPL_SOFTNET] =
MIPS_SOFT_INT_MASK_0 | MIPS_SOFT_INT_MASK_1,
[IPL_VM] =
MIPS_SOFT_INT_MASK_0 | MIPS_SOFT_INT_MASK_1 |
MIPS_INT_MASK_0 |
MIPS_INT_MASK_1,
[IPL_SCHED] =
MIPS_SOFT_INT_MASK_0 | MIPS_SOFT_INT_MASK_1 |
MIPS_INT_MASK_0 |
MIPS_INT_MASK_1 |
MIPS_INT_MASK_2,
};
extern struct user *proc0paddr;
extern u_long bootdev;
extern char edata[], end[];
/*
* Do all the stuff that locore normally does before calling main().
* Process arguments passed to us by the prom monitor.
* Return the first page address following the system.
*/
void
mach_init(int x_boothowto, int x_bootdev, int x_bootname, int x_maxmem)
{
u_long first, last;
char *kernend, *v;
struct btinfo_magic *bi_magic;
struct btinfo_bootarg *bi_arg;
struct btinfo_systype *bi_systype;
#if NKSYMS || defined(DDB) || defined(LKM)
struct btinfo_symtab *bi_sym;
int nsym = 0;
char *ssym, *esym;
ssym = esym = NULL; /* XXX: gcc */
#endif
bi_arg = NULL;
bootinfo = (void *)BOOTINFO_ADDR; /* XXX */
bi_magic = lookup_bootinfo(BTINFO_MAGIC);
if (bi_magic && bi_magic->magic == BOOTINFO_MAGIC) {
bi_arg = lookup_bootinfo(BTINFO_BOOTARG);
if (bi_arg) {
x_boothowto = bi_arg->howto;
x_bootdev = bi_arg->bootdev;
x_maxmem = bi_arg->maxmem;
}
#if NKSYMS || defined(DDB) || defined(LKM)
bi_sym = lookup_bootinfo(BTINFO_SYMTAB);
if (bi_sym) {
nsym = bi_sym->nsym;
ssym = (void *)bi_sym->ssym;
esym = (void *)bi_sym->esym;
}
#endif
bi_systype = lookup_bootinfo(BTINFO_SYSTYPE);
if (bi_systype)
systype = bi_systype->type;
} else {
/*
* Running kernel is loaded by non-native loader;
* clear the BSS segment here.
*/
memset(edata, 0, end - edata);
}
if (systype == 0)
systype = NEWS3400; /* XXX compatibility for old boot */
#ifdef news5000
if (systype == NEWS5000) {
int i;
char *bootspec = (char *)x_bootdev;
if (bi_arg == NULL)
panic("news5000 requires BTINFO_BOOTARG to boot");
_sip = (void *)bi_arg->sip;
x_maxmem = _sip->apbsi_memsize;
x_maxmem -= 0x00100000; /* reserve 1MB for ROM monitor */
if (strncmp(bootspec, "scsi", 4) == 0) {
x_bootdev = (5 << 28) | 0; /* magic, sd */
bootspec += 4;
if (*bootspec != '(' /*)*/)
goto bootspec_end;
i = strtoul(bootspec + 1, &bootspec, 10);
x_bootdev |= (i << 24); /* bus */
if (*bootspec != ',')
goto bootspec_end;
i = strtoul(bootspec + 1, &bootspec, 10);
x_bootdev |= (i / 10) << 20; /* controller */
x_bootdev |= (i % 10) << 16; /* unit */
if (*bootspec != ',')
goto bootspec_end;
i = strtoul(bootspec + 1, &bootspec, 10);
x_bootdev |= (i << 8); /* partition */
}
bootspec_end:
consinit();
}
#endif
/*
* Save parameters into kernel work area.
*/
*(int *)(MIPS_PHYS_TO_KSEG1(MACH_MAXMEMSIZE_ADDR)) = x_maxmem;
*(int *)(MIPS_PHYS_TO_KSEG1(MACH_BOOTDEV_ADDR)) = x_bootdev;
*(int *)(MIPS_PHYS_TO_KSEG1(MACH_BOOTSW_ADDR)) = x_boothowto;
kernend = (char *)mips_round_page(end);
#if NKSYMS || defined(DDB) || defined(LKM)
if (nsym)
kernend = (char *)mips_round_page(esym);
#endif
/*
* Set the VM page size.
*/
uvm_setpagesize();
boothowto = x_boothowto;
bootdev = x_bootdev;
physmem = btoc(x_maxmem);
/*
* Now that we know how much memory we have, initialize the
* mem cluster array.
*/
mem_clusters[0].start = 0; /* XXX is this correct? */
mem_clusters[0].size = ctob(physmem);
mem_cluster_cnt = 1;
/*
* Copy exception-dispatch code down to exception vector.
* Initialize locore-function vector.
* Clear out the I and D caches.
*/
mips_vector_init();
/*
* We know the CPU type now. Initialize our DMA tags (might
* need this early).
*/
newsmips_bus_dma_init();
#if NKSYMS || defined(DDB) || defined(LKM)
if (nsym)
ksyms_init(esym - ssym, ssym, esym);
#endif
#ifdef KADB
boothowto |= RB_KDB;
#endif
#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)
kernend += round_page(mfs_initminiroot(kernend));
#endif
/*
* 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();
/*
* Initialize the virtual memory system.
*/
pmap_bootstrap();
/*
* Allocate space for lwp0's USPACE.
*/
v = (char *)uvm_pageboot_alloc(USPACE);
lwp0.l_addr = proc0paddr = (struct user *)v;
lwp0.l_md.md_regs = (struct frame *)(v + USPACE) - 1;
proc0paddr->u_pcb.pcb_context[11] =
MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */
/*
* Determine what model of computer we are running on.
*/
switch (systype) {
#ifdef news3400
case NEWS3400:
news3400_init();
strcpy(cpu_model, idrom.id_machine);
if (strcmp(cpu_model, "news3400") == 0 ||
strcmp(cpu_model, "news3200") == 0 ||
strcmp(cpu_model, "news3700") == 0) {
/*
* Set up interrupt handling and I/O addresses.
*/
hardware_intr = news3400_intr;
cpuspeed = 10;
} else {
printf("kernel not configured for machine %s\n",
cpu_model);
}
break;
#endif
#ifdef news5000
case NEWS5000:
news5000_init();
strcpy(cpu_model, idrom.id_machine);
if (strcmp(cpu_model, "news5000") == 0 ||
strcmp(cpu_model, "news5900") == 0) {
/*
* Set up interrupt handling and I/O addresses.
*/
hardware_intr = news5000_intr;
cpuspeed = 50; /* ??? XXX */
} else {
printf("kernel not configured for machine %s\n",
cpu_model);
}
break;
#endif
default:
printf("kernel not configured for systype %d\n", systype);
break;
}
}
void
mips_machdep_cache_config(void)
{
/* All r4k news boxen have a 1MB L2 cache. */
if (CPUISMIPS3)
mips_sdcache_size = 1024 * 1024;
}
/*
* cpu_startup: allocate memory for variable-sized tables,
* initialize CPU, and do autoconfiguration.
*/
void
cpu_startup(void)
{
vaddr_t minaddr, maxaddr;
char pbuf[9];
#ifdef DEBUG
extern int pmapdebug;
int opmapdebug = pmapdebug;
pmapdebug = 0;
#endif
/*
* Good {morning,afternoon,evening,night}.
*/
printf("%s%s", copyright, version);
printf("SONY NET WORK STATION, Model %s, ", idrom.id_model);
printf("Machine ID #%d\n", idrom.id_serial);
format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
printf("total memory = %s\n", pbuf);
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.
*/
#ifdef DEBUG
pmapdebug = opmapdebug;
#endif
format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free));
printf("avail memory = %s\n", pbuf);
}
/*
* lookup_bootinfo:
* Look up information in bootinfo of boot loader.
*/
void *
lookup_bootinfo(int type)
{
struct btinfo_common *bt;
char *help = bootinfo;
/* Check for a bootinfo record first. */
if (help == NULL)
return NULL;
do {
bt = (struct btinfo_common *)help;
if (bt->type == type)
return (void *)help;
help += bt->next;
} while (bt->next != 0 &&
(size_t)help < (size_t)bootinfo + BOOTINFO_SIZE);
return NULL;
}
/*
* call PROM to halt or reboot.
*/
void
prom_halt(int howto)
{
#ifdef news5000
if (systype == NEWS5000)
apcall_exit(howto);
#endif
#ifdef news3400
if (systype == NEWS3400)
to_monitor(howto);
#endif
for (;;);
}
int waittime = -1;
void
cpu_reboot(volatile int howto, char *bootstr)
{
/* take a snap shot before clobbering any registers */
if (curlwp)
savectx((struct user *)curpcb);
#ifdef DEBUG
if (panicstr)
stacktrace();
#endif
/* If system is cold, just halt. */
if (cold) {
howto |= RB_HALT;
goto haltsys;
}
/* If "always halt" was specified as a boot flag, obey. */
if ((boothowto & RB_HALT) != 0)
howto |= RB_HALT;
boothowto = howto;
if ((howto & RB_NOSYNC) == 0 && waittime < 0) {
/*
* Synchronize the disks....
*/
waittime = 0;
vfs_shutdown();
/*
* If we've been adjusting the clock, the todr
* will be out of synch; adjust it now.
*/
resettodr();
}
/* Disable interrupts. */
disable_intr();
splhigh();
/* If rebooting and a dump is requested do it. */
#if 0
if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
#else
if (howto & RB_DUMP)
#endif
dumpsys();
haltsys:
/* run any shutdown hooks */
doshutdownhooks();
if ((howto & RB_POWERDOWN) == RB_POWERDOWN)
prom_halt(0x80); /* rom monitor RB_PWOFF */
/* Finally, halt/reboot the system. */
printf("%s\n\n", howto & RB_HALT ? "halted." : "rebooting...");
prom_halt(howto & RB_HALT);
/*NOTREACHED*/
}
void
delay(int n)
{
DELAY(n);
}
void
cpu_intr(uint32_t status, uint32_t cause, uint32_t pc, uint32_t ipending)
{
struct cpu_info *ci;
ci = curcpu();
uvmexp.intrs++;
/* device interrupts */
ci->ci_idepth++;
(*hardware_intr)(status, cause, pc, ipending);
ci->ci_idepth--;
#ifdef __HAVE_FAST_SOFTINTS
/* software interrupts */
ipending &= (MIPS_SOFT_INT_MASK_1|MIPS_SOFT_INT_MASK_0);
if (ipending == 0)
return;
_clrsoftintr(ipending);
softintr_dispatch(ipending);
#endif
}