NetBSD-5.0.2/sys/arch/hpcmips/hpcmips/machdep.c
/* $NetBSD: machdep.c,v 1.96 2008/07/02 17:28:55 ad Exp $ */
/*-
* Copyright (c) 1999 Shin Takemura, All rights reserved.
* Copyright (c) 1999-2001 SATO Kazumi, All rights reserved.
*
* 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. The name of the author may not 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.
*
*/
/*
* 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.
*
* from: Utah Hdr: machdep.c 1.63 91/04/24
*
* @(#)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.
*
* from: Utah Hdr: machdep.c 1.63 91/04/24
*
* @(#)machdep.c 8.3 (Berkeley) 1/12/94
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.96 2008/07/02 17:28:55 ad Exp $");
#include "opt_vr41xx.h"
#include "opt_tx39xx.h"
#include "opt_boot_standalone.h"
#include "opt_spec_platform.h"
#include "biconsdev.h"
#include "fs_mfs.h"
#include "opt_ddb.h"
#include "opt_kgdb.h"
#include "opt_rtc_offset.h"
#include "fs_nfs.h"
#include "opt_kloader.h"
#include "opt_kloader_kernel_path.h"
#include "debug_hpc.h"
#include "opt_md.h"
#include "opt_memsize.h"
#include "opt_no_symbolsz_entry.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/user.h>
#include <sys/buf.h>
#include <sys/reboot.h>
#include <sys/mount.h>
#include <sys/boot_flag.h>
#include <sys/ksyms.h>
#include <uvm/uvm_extern.h>
#include <ufs/mfs/mfs_extern.h> /* mfs_initminiroot() */
#include <dev/cons.h> /* cntab access (cpu_reboot) */
#include <machine/psl.h>
#include <machine/sysconf.h>
#include <machine/platid.h>
#include <machine/platid_mask.h>
#include <machine/kloader.h>
#include <machine/debug.h>
#ifdef KGDB
#include <sys/kgdb.h>
#endif
#include "ksyms.h"
#if NKSYMS || defined(DDB) || defined(LKM)
#include <machine/db_machdep.h>
#include <ddb/db_sym.h>
#include <ddb/db_extern.h>
#ifndef DB_ELFSIZE
#error Must define DB_ELFSIZE!
#endif
#define ELFSIZE DB_ELFSIZE
#include <sys/exec_elf.h>
#endif
#if NBICONSDEV > 0
#include <sys/conf.h>
#include <dev/hpc/biconsvar.h>
#include <dev/hpc/bicons.h>
#define biconscnpollc nullcnpollc
cons_decl(bicons);
static struct consdev bicons __attribute((__unused__)) = cons_init(bicons);
static int __bicons_enable;
#define DPRINTF(arg) { if (__bicons_enable) printf arg; }
#else /* NBICONSDEV > 0 */
#define DPRINTF(arg)
#endif /* NBICONSDEV > 0 */
#ifdef NFS
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>
#include <nfs/nfsmount.h>
#endif
#ifdef MEMORY_DISK_DYNAMIC
#include <dev/md.h>
#endif
/* the following is used externally (sysctl_hw) */
char cpu_name[40]; /* set CPU depend xx_init() */
struct cpu_info cpu_info_store; /* only one CPU */
int cpuspeed = 1; /* approx # instr per usec. */
/* CPU core switch table */
struct platform platform;
#ifdef VR41XX
extern void vr_init(void);
#endif
#ifdef TX39XX
extern void tx_init(void);
#endif
/* boot environment */
static struct bootinfo bi_copy;
struct bootinfo *bootinfo;
char booted_kernel[128];
extern void makebootdev(const char *);
#ifdef KLOADER
#if !defined(KLOADER_KERNEL_PATH)
#define KLOADER_KERNEL_PATH "/netbsd"
#endif /* !KLOADER_KERNEL_PATH */
static char kernel_path[] = KLOADER_KERNEL_PATH;
#endif /* KLOADER */
/* maps for VM objects */
struct vm_map *mb_map;
struct vm_map *phys_map;
/* physical memory */
int physmem; /* max supported memory, changes to actual */
int mem_cluster_cnt;
phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX];
/*
* 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 */
void mach_init(int, char *[], struct bootinfo *);
#ifdef DEBUG
/* stacktrace code violates prototypes to get callee's registers */
extern void stacktrace(void); /*XXX*/
#endif
/*
* Do all the stuff that locore normally does before calling main().
* Process arguments passed to us by the boot loader.
* Return the first page address following the system.
*/
void
mach_init(int argc, char *argv[], struct bootinfo *bi)
{
/*
* this routines stack is never polluted since stack pointer
* is lower than kernel text segment, and at exiting, stack pointer
* is changed to proc0.
*/
#ifdef KLOADER
struct kloader_bootinfo kbi;
#endif
extern struct user *proc0paddr;
extern char edata[], end[];
#if NKSYMS || defined(DDB) || defined(LKM)
extern void *esym;
#endif
void *kernend;
char *cp;
int i;
/* clear the BSS segment */
#if NKSYMS || defined(DDB) || defined(LKM)
size_t symbolsz = 0;
Elf_Ehdr *eh = (void *)end;
if (memcmp(eh->e_ident, ELFMAG, SELFMAG) == 0 &&
eh->e_ident[EI_CLASS] == ELFCLASS) {
esym = end;
#ifndef NO_SYMBOLSZ_ENTRY
if (eh->e_entry != 0) {
/* pbsdboot */
symbolsz = eh->e_entry;
} else
#endif
{
/* hpcboot */
Elf_Shdr *sh = (void *)(end + eh->e_shoff);
for(i = 0; i < eh->e_shnum; i++, sh++)
if (sh->sh_offset > 0 &&
(sh->sh_offset + sh->sh_size) > symbolsz)
symbolsz = sh->sh_offset + sh->sh_size;
}
esym = (char*)esym + symbolsz;
kernend = (void *)mips_round_page(esym);
bzero(edata, end - edata);
} else
#endif /* NKSYMS || defined(DDB) || defined(LKM) */
{
kernend = (void *)mips_round_page(end);
memset(edata, 0, (char *)kernend - edata);
}
#if defined(BOOT_STANDALONE)
#if !defined (SPEC_PLATFORM) || SPEC_PLATFORM == 1
#error specify SPEC_PLATFORM=platid_mask_MACH_xxx_yyy in BOOT_STANDALONE case.
#error see platid_mask.c for platid_mask_MACH_xxx_yyy.
#else
memcpy(&platid, &SPEC_PLATFORM, sizeof(platid));
#endif
#endif /* defined(BOOT_STANDALONE) && defined(SPEC_PLATFORM) */
/*
* Arguments are set up by boot loader.
*/
if (bi && bi->magic == BOOTINFO_MAGIC) {
memset(&bi_copy, 0, sizeof(struct bootinfo));
memcpy(&bi_copy, bi, min(bi->length, sizeof(struct bootinfo)));
bootinfo = &bi_copy;
if (bootinfo->platid_cpu != 0) {
platid.dw.dw0 = bootinfo->platid_cpu;
}
if (bootinfo->platid_machine != 0) {
platid.dw.dw1 = bootinfo->platid_machine;
}
}
/* copy boot parameter for kloader */
#ifdef KLOADER
kloader_bootinfo_set(&kbi, argc, argv, bi, false);
#endif
/*
* CPU core Specific Function Hooks
*/
#if defined(VR41XX) && defined(TX39XX)
if (platid_match(&platid, &platid_mask_CPU_MIPS_VR_41XX))
vr_init();
else if (platid_match(&platid, &platid_mask_CPU_MIPS_TX_3900) ||
platid_match(&platid, &platid_mask_CPU_MIPS_TX_3920))
tx_init();
#elif defined(VR41XX)
vr_init();
#elif defined(TX39XX)
tx_init();
#else
#error "define TX39XX and/or VR41XX"
#endif
#if NBICONSDEV > 0
/*
* bicons don't need actual device initialize. only bootinfo needed.
*/
__bicons_enable = (bicons_init(&bicons) == 0);
if (__bicons_enable)
cn_tab = &bicons;
#endif
/* Initialize frame buffer (to steal DMA buffer, stay here.) */
#ifdef HPC_DEBUG_LCD
dbg_lcd_test();
#endif
(*platform.fb_init)(&kernend);
kernend = (void *)mips_round_page(kernend);
/*
* Set the VM page size.
*/
uvmexp.pagesize = NBPG; /* Notify the VM system of our page size. */
uvm_setpagesize();
/*
* Copy exception-dispatch code down to exception vector.
* Initialize locore-function vector.
* Clear out the I and D caches.
*/
mips_vector_init();
intr_init();
#ifdef DEBUG
/*
* Look at arguments passed to us and compute boothowto.
*/
if (bootinfo) {
DPRINTF(("Bootinfo. available, "));
}
DPRINTF(("args: "));
for (i = 0; i < argc; i++) {
DPRINTF(("%s ", argv[i]));
}
DPRINTF(("\n"));
DPRINTF(("platform ID: %08lx %08lx\n", platid.dw.dw0, platid.dw.dw1));
#endif /* DEBUG */
#ifndef RTC_OFFSET
/*
* rtc_offset from bootinfo.timezone set by pbsdboot.exe
*/
if (rtc_offset == 0 && bootinfo
&& bootinfo->timezone > (-12*60)
&& bootinfo->timezone <= (12*60))
rtc_offset = bootinfo->timezone;
#endif /* RTC_OFFSET */
/* Compute bootdev */
makebootdev("wd0"); /* default boot device */
boothowto = 0;
#ifdef KADB
boothowto |= RB_KDB;
#endif
strncpy(booted_kernel, argv[0], sizeof(booted_kernel));
booted_kernel[sizeof(booted_kernel)-1] = 0;
for (i = 1; i < argc; i++) {
for (cp = argv[i]; *cp; cp++) {
switch (*cp) {
case 'h': /* XXX, serial console */
bootinfo->bi_cnuse |= BI_CNUSE_SERIAL;
break;
case 'b':
/* boot device: -b=sd0 etc. */
#ifdef NFS
if (strcmp(cp+2, "nfs") == 0)
mountroot = nfs_mountroot;
else
makebootdev(cp+2);
#else /* NFS */
makebootdev(cp+2);
#endif /* NFS */
cp += strlen(cp);
break;
default:
BOOT_FLAG(*cp, boothowto);
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) {
size_t fssz;
fssz = round_page(mfs_initminiroot(kernend));
#ifdef MEMORY_DISK_DYNAMIC
md_root_setconf(kernend, fssz);
#endif /* MEMORY_DISK_DYNAMIC */
kernend = (char *)kernend + fssz;
}
#endif /* MFS */
#if NKSYMS || defined(DDB) || defined(LKM)
/* init symbols if present */
if (esym)
ksyms_init(symbolsz, &end, esym);
#endif /* DDB */
/*
* Alloc u pages for lwp0 stealing KSEG0 memory.
*/
lwp0.l_addr = proc0paddr = (struct user *)kernend;
lwp0.l_md.md_regs =
(struct frame *)((char *)kernend + UPAGES * PAGE_SIZE) - 1;
memset(kernend, 0, UPAGES * PAGE_SIZE);
proc0paddr->u_pcb.pcb_context[11] =
MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */
kernend = (char *)kernend + UPAGES * PAGE_SIZE;
/* Initialize console and KGDB serial port. */
(*platform.cons_init)();
#if defined(DDB) || defined(KGDB)
if (boothowto & RB_KDB) {
#ifdef DDB
Debugger();
#endif /* DDB */
#ifdef KGDB
kgdb_debug_init = 1;
kgdb_connect(1);
#endif /* KGDB */
}
#endif /* DDB || KGDB */
/* Find physical memory regions. */
#ifdef MEMSIZE
mem_clusters[0].start = 0;
mem_clusters[0].size = (paddr_t) kernend - MIPS_KSEG0_START;
mem_clusters[1].start = (paddr_t) kernend - MIPS_KSEG0_START;
mem_clusters[1].size = MEMSIZE * 0x100000 - mem_clusters[1].start;
mem_cluster_cnt = 2;
#else
(*platform.mem_init)((paddr_t)kernend - MIPS_KSEG0_START);
#endif
/*
* Clear currently unused D-RAM area
* (For reboot Windows CE clearly)
*/
{
u_int32_t sp;
__asm volatile("move %0, $29" : "=r"(sp));
KDASSERT(sp > KERNBASE + 0x400);
memset((void *)(KERNBASE + 0x400), 0, sp - (KERNBASE + 0x400));
}
printf("mem_cluster_cnt = %d\n", mem_cluster_cnt);
physmem = 0;
for (i = 0; i < mem_cluster_cnt; i++) {
printf("mem_clusters[%d] = {0x%lx,0x%lx}\n", i,
(paddr_t)mem_clusters[i].start,
(paddr_t)mem_clusters[i].size);
physmem += atop(mem_clusters[i].size);
}
/* Cluster 0 is always the kernel, which doesn't get loaded. */
for (i = 1; i < mem_cluster_cnt; i++) {
paddr_t start, size;
start = (paddr_t)mem_clusters[i].start;
size = (paddr_t)mem_clusters[i].size;
printf("loading 0x%lx,0x%lx\n", start, size);
memset((void *)MIPS_PHYS_TO_KSEG1(start), 0, size);
uvm_page_physload(atop(start), atop(start + size),
atop(start), atop(start + size),
VM_FREELIST_DEFAULT);
}
/*
* Initialize error message buffer (at end of core).
*/
mips_init_msgbuf();
/*
* Initialize the virtual memory system.
*/
pmap_bootstrap();
}
/*
* Machine-dependent startup code.
* allocate memory for variable-sized tables, initialize CPU.
*/
void
cpu_startup()
{
vaddr_t minaddr, maxaddr;
char pbuf[9];
u_int i;
#ifdef DEBUG
extern int pmapdebug;
int opmapdebug = pmapdebug;
pmapdebug = 0;
#endif
/*
* Good {morning,afternoon,evening,night}.
*/
printf("%s%s", copyright, version);
sprintf(cpu_model, "%s (%s)", platid_name(&platid), cpu_name);
printf("%s\n", cpu_model);
format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
printf("total memory = %s\n", pbuf);
if (bootverbose) {
/* show again when verbose mode */
printf("total memory banks = %d\n", mem_cluster_cnt);
for (i = 0; i < mem_cluster_cnt; i++) {
printf("memory bank %d = 0x%08lx %ldKB(0x%08lx)\n", i,
(paddr_t)mem_clusters[i].start,
(paddr_t)mem_clusters[i].size/1024,
(paddr_t)mem_clusters[i].size);
}
}
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);
}
void
cpu_reboot(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;
}
#ifdef KLOADER
if ((howto & RB_HALT) == 0) {
if (howto & RB_STRING)
kloader_reboot_setup(bootstr);
else
kloader_reboot_setup(kernel_path);
}
#endif
boothowto = howto;
if ((howto & RB_NOSYNC) == 0) {
/*
* Synchronize the disks....
*/
vfs_shutdown();
/*
* If we've been adjusting the clock, the todr
* will be out of synch; adjust it now.
*/
resettodr();
}
/* Disable interrupts. */
splhigh();
/* If rebooting and a dump is requested do it. */
if (howto & RB_DUMP)
dumpsys();
haltsys:
/* run any shutdown hooks */
doshutdownhooks();
/* Finally, halt/reboot the system. */
if (howto & RB_HALT) {
printf("halted.\n");
} else {
#ifdef KLOADER
kloader_reboot();
/* NOTREACHED */
#endif
}
(*platform.reboot)(howto, bootstr);
while(1)
;
/*NOTREACHED*/
}
void
consinit()
{
/* platform.cons_init() do it */
}