Add findcpuspeed for delay() and to pass to the kernel(BUS FREQ information).
some bug fix.
This commit is contained in:
sakamoto
parent
c6d1f2e018
commit
5f78a36791
@ -1,4 +1,4 @@
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# $NetBSD: Makefile,v 1.1 1998/01/16 04:17:35 sakamoto Exp $
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# $NetBSD: Makefile,v 1.2 1998/01/19 03:00:55 sakamoto Exp $
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S= ${.CURDIR}/../../../..
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@ -16,7 +16,7 @@ CPPFLAGS= -I${.CURDIR}/../../.. -I${S} -I${S}/lib/libsa
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CPPFLAGS+= -DDBMONITOR -DRELOC=${RELOC} -DENTRY=${ENTRY}
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CPPFLAGS+= -DCONS_VGA
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#CPPFLAGS+= -DCONS_SERIAL
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#CPPFLAGS+= -DCOMSPEED=38400 -DCOMPORT=0
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#CPPFLAGS+= -DCOMSPEED=38400 -DCOMPORT=0x3F8
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CPPFLAGS+= -DUSE_SCAN
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AFLAGS= -x assembler-with-cpp -traditional-cpp
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@ -1,4 +1,4 @@
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/* $Id: boot.c,v 1.1 1998/01/16 04:17:36 sakamoto Exp $ */
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/* $Id: boot.c,v 1.2 1998/01/19 03:00:57 sakamoto Exp $ */
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/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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@ -36,6 +36,9 @@
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#include <sys/reboot.h>
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#include <machine/param.h>
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#include <bebox/include/bootinfo.h>
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#ifdef CONS_SERIAL
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#include "ns16550.h"
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#endif /* CONS_SERIAL */
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#define NAMELEN 128
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@ -54,12 +57,14 @@ int args;
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void *startsym, *endsym, *bootinfo;
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struct btinfo_memory btinfo_memory;
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struct btinfo_console btinfo_console;
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struct btinfo_clock btinfo_clock;
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extern int errno;
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void
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main()
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{
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int fd, n = 0;
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void *p;
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void start_CPU1();
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extern int CPU1_alive;
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extern char bootprog_name[], bootprog_rev[],
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@ -72,24 +77,23 @@ main()
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/*
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* make bootinfo
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*/
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bootinfo = (void *)0x3020;
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bootinfo = (void *)0x3030;
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btinfo_memory.common.next =
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(void *)((size_t)bootinfo + sizeof (btinfo_memory));
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btinfo_memory.common.next = sizeof (btinfo_memory);
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btinfo_memory.common.type = BTINFO_MEMORY;
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btinfo_memory.memsize = *(int *)0x3010;
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btinfo_memory.common.next = NULL;
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btinfo_memory.common.type = BTINFO_CONSOLE;
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btinfo_console.common.next = sizeof (btinfo_console);
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btinfo_console.common.type = BTINFO_CONSOLE;
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#ifdef CONS_VGA
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strcpy(btinfo_console.devname, "vga");
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#endif /* CONS_VGA */
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#ifdef CONS_SERIAL
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strcpy(btinfo_console.devname, "com");
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# ifdef COMPORT
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btinfo_console.port = COMPORT;
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btinfo_console.addr = COMPORT;
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# else /* COMPORT */
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btinfo_console.port = 0;
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btinfo_console.addr = COM1;
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# endif /* COMPORT */
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# ifdef COMSPEED
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btinfo_console.speed = COMSPEED;
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@ -98,9 +102,16 @@ main()
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# endif /* COMSPEED */
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#endif /* CONS_SERIAL */
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bcopy((void *)&btinfo_memory, bootinfo, sizeof (btinfo_memory));
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bcopy((void *)&btinfo_console, btinfo_memory.common.next,
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sizeof (btinfo_console));
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btinfo_clock.common.next = 0;
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btinfo_clock.common.type = BTINFO_CLOCK;
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btinfo_clock.ticks_per_sec = findcpuspeed();
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p = bootinfo;
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bcopy((void *)&btinfo_memory, p, sizeof (btinfo_memory));
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p += sizeof (btinfo_memory);
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bcopy((void *)&btinfo_console, p, sizeof (btinfo_console));
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p += sizeof (btinfo_console);
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bcopy((void *)&btinfo_clock, p, sizeof (btinfo_clock));
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/*
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* console init
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@ -1,4 +1,4 @@
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/* $NetBSD: clock.c,v 1.1 1998/01/16 04:17:37 sakamoto Exp $ */
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/* $NetBSD: clock.c,v 1.2 1998/01/19 03:00:59 sakamoto Exp $ */
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/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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@ -31,9 +31,13 @@
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <dev/isa/isareg.h>
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#include <dev/ic/i8253reg.h>
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static u_long ns_per_tick = 320;
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#define FIRST_GUESS 0x2000
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static u_long ns_per_tick;
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static inline u_quad_t
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mftb()
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@ -63,3 +67,41 @@ delay(n)
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asm ("1: mftbu %0; cmpw %0,%1; blt 1b; bgt 2f; mftb %0; cmpw %0,%2; blt 1b; 2:"
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:: "r"(scratch), "r"(tbh), "r"(tbl));
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}
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int
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findcpuspeed()
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{
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int i;
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int ticks_per_sec;
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u_short remainder;
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u_quad_t tstart, tend;
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/* Put counter in count down mode */
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outb(TIMER_MODE, TIMER_SEL0|TIMER_16BIT|TIMER_RATEGEN);
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outb(TIMER_CNTR0, 0xff); /* lo */
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outb(TIMER_CNTR0, 0xff); /* hi */
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for (i = FIRST_GUESS; i; i--)
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;
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/* Read the value left in the counter */
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outb(TIMER_MODE, TIMER_SEL0|TIMER_LATCH);
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remainder = inb(TIMER_CNTR0);
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remainder += (inb(TIMER_CNTR0) << 8);
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tstart = mftb();
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for (i = FIRST_GUESS; i; i--)
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;
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tend = mftb();
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if (tend > tstart)
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tend -= tstart;
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else
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tend += UQUAD_MAX - tstart;
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ticks_per_sec = (int)(tend * TIMER_FREQ / (0xffff - remainder));
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if (ticks_per_sec > 8000000) /* XXX */
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ticks_per_sec = 33000000 / 4;
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else
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ticks_per_sec = 25000000 / 4;
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ns_per_tick = 1000000000 / ticks_per_sec;
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return (ticks_per_sec);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: devopen.c,v 1.1 1998/01/16 04:17:44 sakamoto Exp $ */
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/* $NetBSD: devopen.c,v 1.2 1998/01/19 03:01:00 sakamoto Exp $ */
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/*-
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* Copyright (c) 1993 John Brezak
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@ -60,7 +60,7 @@ devlookup(d)
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if (dp->dv_name)
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printf(" %s", dp->dv_name);
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printf("\n");
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return (ENODEV);
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return (-1);
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}
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/*
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@ -1,4 +1,4 @@
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/* $Id: ns16550.c,v 1.1 1998/01/16 04:17:57 sakamoto Exp $ */
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/* $Id: ns16550.c,v 1.2 1998/01/19 03:01:01 sakamoto Exp $ */
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/*-
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* Copyright (C) 1995-1997 Gary Thomas (gdt@linuxppc.org)
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@ -37,10 +37,6 @@
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#include <bebox/include/bootinfo.h>
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#include "ns16550.h"
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typedef struct NS16550 *NS16550_t;
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const NS16550_t COM_PORTS[] = { (NS16550_t)COM1, (NS16550_t)COM2,
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(NS16550_t)COM3, (NS16550_t)COM4 };
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volatile struct NS16550 *
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NS16550_init()
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@ -49,7 +45,7 @@ NS16550_init()
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int speed;
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extern struct btinfo_console btinfo_console;
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com_port = (struct NS16550 *) COM_PORTS[btinfo_console.port];
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com_port = (struct NS16550 *)(COMBASE + btinfo_console.addr);
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com_port->lcr = 0x80; /* Access baud rate */
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speed = comspeed(btinfo_console.speed);
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@ -1,4 +1,4 @@
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/* $Id: ns16550.h,v 1.1 1998/01/16 04:17:58 sakamoto Exp $ */
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/* $Id: ns16550.h,v 1.2 1998/01/19 03:01:03 sakamoto Exp $ */
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/*-
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* Copyright (C) 1995-1997 Gary Thomas (gdt@linuxppc.org)
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@ -60,8 +60,8 @@ struct NS16550
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#define LSR_TEMT 0x40 /* Xmitter empty */
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#define LSR_ERR 0x80 /* Error */
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#define COM1 0x800003F8
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#define COM2 0x800002F8
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#define COM3 0x80000380
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#define COM4 0x80000388
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#define COMBASE 0x80000000
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#define COM1 0x3F8
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#define COM2 0x2F8
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#define COM3 0x380
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#define COM4 0x388
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@ -1,4 +1,4 @@
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/* $NetBSD: tgets.c,v 1.1 1998/01/16 04:18:04 sakamoto Exp $ */
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/* $NetBSD: tgets.c,v 1.2 1998/01/19 03:01:04 sakamoto Exp $ */
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/*-
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* Copyright (c) 1993
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@ -46,7 +46,7 @@ tgets(buf)
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register char *lp;
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#ifdef USE_SCAN
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#define SCANWAIT 20000
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#define SCANWAIT 10000
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#define PWAIT 500
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for (i = 0; i < PWAIT; i++) {
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if ((c = cnscan()) != -1)
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@ -1,3 +1,4 @@
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$Id: version,v 1.1 1998/01/16 04:18:05 sakamoto Exp $
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$Id: version,v 1.2 1998/01/19 03:01:05 sakamoto Exp $
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1.0: Boot program for BeBox; initial revision
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1.1: Boot program for BeBox; initial revision
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1.2: check BUS FREQ, add clock information
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