Add support for XBOX to the FreeBSD port. The xbox architecture is
nearly identical to wintel/ia32, with a couple of tweaks. Since it is so similar to ia32, it is optionally added to a i386 kernel. This port is preliminary, but seems to work well. Further improvements will improve the interaction with syscons(4), port Linux nforce driver and future versions of the xbox. This supports the 64MB and 128MB boxes. You'll need the most recent CVS version of Cromwell (the Linux BIOS for the XBOX) to boot. Rink will be maintaining this port, and is interested in feedback. He's setup a website http://xbox-bsd.nl to report the latest developments. Any silly mistakes are my fault. Submitted by: Rink P.W. Springer rink at stack dot nl and Ed Schouten ed at fxq dot nl
This commit is contained in:
Warner Losh
parent
24ea970aff
commit
51ef421d92
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=152219
@ -462,3 +462,7 @@ pci/agp_intel.c optional agp
|
||||
pci/agp_nvidia.c optional agp
|
||||
pci/agp_sis.c optional agp
|
||||
pci/agp_via.c optional agp
|
||||
i386/xbox/xbox.c optional xbox
|
||||
i386/xbox/xboxfb.c optional xboxfb
|
||||
dev/fb/boot_font.c optional xboxfb
|
||||
i386/xbox/pic16l.s optional xbox
|
||||
|
||||
@ -163,3 +163,6 @@ ASR_COMPAT opt_asr.h
|
||||
# Debugging
|
||||
STOP_NMI opt_cpu.h
|
||||
NPX_DEBUG opt_npx.h
|
||||
|
||||
# XBOX support in the kernel
|
||||
XBOX opt_xbox.h
|
||||
|
||||
104
sys/i386/conf/XBOX
Normal file
104
sys/i386/conf/XBOX
Normal file
@ -0,0 +1,104 @@
|
||||
#
|
||||
# XBOX -- kernel for an XBOX
|
||||
#
|
||||
# $FreeBSD$
|
||||
machine i386
|
||||
cpu I686_CPU # Celeron
|
||||
ident XBOX
|
||||
|
||||
makeoptions MODULES_OVERRIDE=""
|
||||
|
||||
options KDB
|
||||
options DDB
|
||||
|
||||
options XBOX # kernel is for XBOX
|
||||
device xboxfb # frame buffer support (REQUIRED!)
|
||||
|
||||
# no support yet for root device name fetching
|
||||
options ROOTDEVNAME=\"ufs:ad0s1a\"
|
||||
#options ROOTDEVNAME=\"cd9660:acd0\"
|
||||
|
||||
options SCHED_4BSD # 4BSD scheduler
|
||||
options INET # InterNETworking
|
||||
options INET6 # IPv6 communications protocols
|
||||
options FFS # Berkeley Fast Filesystem
|
||||
options SOFTUPDATES # Enable FFS soft updates support
|
||||
#options UFS_ACL # Support for access control lists
|
||||
#options UFS_DIRHASH # Improve performance on big directories
|
||||
#options MD_ROOT # MD is a potential root device
|
||||
options NFSCLIENT # Network Filesystem Client
|
||||
#options NFSSERVER # Network Filesystem Server
|
||||
#options NFS_ROOT # NFS usable as /, requires NFSCLIENT
|
||||
#options MSDOSFS # MSDOS Filesystem
|
||||
options CD9660 # ISO 9660 Filesystem
|
||||
#options PROCFS # Process filesystem (requires PSEUDOFS)
|
||||
#options PSEUDOFS # Pseudo-filesystem framework
|
||||
#options COMPAT_43 # Compatible with BSD 4.3 [KEEP THIS!]
|
||||
#options COMPAT_FREEBSD4 # Compatible with FreeBSD4
|
||||
#options KTRACE # ktrace(1) support
|
||||
#options SYSVSHM # SYSV-style shared memory
|
||||
#options SYSVMSG # SYSV-style message queues
|
||||
#options SYSVSEM # SYSV-style semaphores
|
||||
#options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
|
||||
#options KBD_INSTALL_CDEV # install a CDEV entry in /dev
|
||||
options ADAPTIVE_GIANT # Giant mutex is adaptive.
|
||||
|
||||
#device apic # I/O APIC
|
||||
|
||||
# Bus support. Do not remove isa, even if you have no isa slots
|
||||
device isa
|
||||
device pci
|
||||
|
||||
# ATA and ATAPI devices
|
||||
device ata
|
||||
device atadisk # ATA disk drives
|
||||
device atapicd # ATAPI CDROM drives
|
||||
options ATA_STATIC_ID # Static device numbering
|
||||
|
||||
# SCSI peripherals
|
||||
device scbus # SCSI bus (required for SCSI)
|
||||
device da # Direct Access (disks)
|
||||
|
||||
# Floating point support - do not disable.
|
||||
device npx
|
||||
|
||||
# Pseudo devices.
|
||||
device loop # Network loopback
|
||||
device mem # Memory and kernel memory devices
|
||||
device io # I/O device
|
||||
device random # Entropy device
|
||||
device ether # Ethernet support
|
||||
#device tun # Packet tunnel.
|
||||
device pty # Pseudo-ttys (telnet etc)
|
||||
#device md # Memory "disks"
|
||||
#device gif # IPv6 and IPv4 tunneling
|
||||
#device faith # IPv6-to-IPv4 relaying (translation)
|
||||
|
||||
# The `bpf' device enables the Berkeley Packet Filter.
|
||||
# Be aware of the administrative consequences of enabling this!
|
||||
# Note that 'bpf' is required for DHCP.
|
||||
device bpf # Berkeley packet filter
|
||||
|
||||
# USB support
|
||||
#device uhci # UHCI PCI->USB interface
|
||||
device ohci # OHCI PCI->USB interface
|
||||
device usb # USB Bus (required)
|
||||
device ugen # Generic
|
||||
device uhid # "Human Interface Devices"
|
||||
device ukbd # Keyboard
|
||||
device ulpt # Printer
|
||||
device umass # Disks/Mass storage - Requires scbus and da
|
||||
device ums # Mouse
|
||||
device urio # Diamond Rio 500 MP3 player
|
||||
device uscanner # Scanners
|
||||
|
||||
device miibus
|
||||
device aue # ADMtek USB Ethernet
|
||||
device axe # ASIX Electronics USB Ethernet
|
||||
device cdce # Generic USB over Ethernet
|
||||
device cue # CATC USB Ethernet
|
||||
device kue # Kawasaki LSI USB Ethernet
|
||||
device rue # RealTek RTL8150 USB Ethernet
|
||||
|
||||
device sound
|
||||
device snd_ich # nForce audio
|
||||
@ -53,6 +53,7 @@ __FBSDID("$FreeBSD$");
|
||||
#include "opt_msgbuf.h"
|
||||
#include "opt_npx.h"
|
||||
#include "opt_perfmon.h"
|
||||
#include "opt_xbox.h"
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/proc.h>
|
||||
@ -133,6 +134,13 @@ __FBSDID("$FreeBSD$");
|
||||
#include <i386/isa/icu.h>
|
||||
#endif
|
||||
|
||||
#ifdef XBOX
|
||||
#include <machine/xbox.h>
|
||||
|
||||
int arch_i386_is_xbox = 0;
|
||||
uint32_t arch_i386_xbox_memsize = 0;
|
||||
#endif
|
||||
|
||||
/* Sanity check for __curthread() */
|
||||
CTASSERT(offsetof(struct pcpu, pc_curthread) == 0);
|
||||
|
||||
@ -1625,6 +1633,21 @@ getmemsize(int first)
|
||||
struct bios_smap *smap;
|
||||
quad_t dcons_addr, dcons_size;
|
||||
|
||||
#ifdef XBOX
|
||||
if (arch_i386_is_xbox) {
|
||||
/*
|
||||
* We queried the memory size before, so chop off 4MB for
|
||||
* the framebuffer and inform the OS of this.
|
||||
*/
|
||||
extmem = (arch_i386_xbox_memsize - 4) * 1024;
|
||||
basemem = 0;
|
||||
physmap[0] = 0;
|
||||
physmap[1] = extmem * 1024;
|
||||
physmap_idx = 0;
|
||||
goto physmap_done;
|
||||
}
|
||||
#endif
|
||||
|
||||
hasbrokenint12 = 0;
|
||||
TUNABLE_INT_FETCH("hw.hasbrokenint12", &hasbrokenint12);
|
||||
bzero(&vmf, sizeof(vmf));
|
||||
@ -2158,6 +2181,28 @@ init386(first)
|
||||
r_idt.rd_base = (int) idt;
|
||||
lidt(&r_idt);
|
||||
|
||||
#ifdef XBOX
|
||||
/*
|
||||
* The following code queries the PCI ID of 0:0:0. For the XBOX,
|
||||
* This should be 0x10de / 0x02a5.
|
||||
*
|
||||
* This is exactly what Linux does.
|
||||
*/
|
||||
outl(0xcf8, 0x80000000);
|
||||
if (inl(0xcfc) == 0x02a510de) {
|
||||
arch_i386_is_xbox = 1;
|
||||
pic16l_setled(XBOX_LED_GREEN);
|
||||
|
||||
/*
|
||||
* We are an XBOX, but we may have either 64MB or 128MB of
|
||||
* memory. The PCI host bridge should be programmed for this,
|
||||
* so we just query it.
|
||||
*/
|
||||
outl (0xcf8, 0x80000084);
|
||||
arch_i386_xbox_memsize = (inl (0xcfc) == 0x7FFFFFF) ? 128 : 64;
|
||||
}
|
||||
#endif /* XBOX */
|
||||
|
||||
/*
|
||||
* Initialize the console before we print anything out.
|
||||
*/
|
||||
|
||||
@ -106,6 +106,7 @@ __FBSDID("$FreeBSD$");
|
||||
#include "opt_cpu.h"
|
||||
#include "opt_pmap.h"
|
||||
#include "opt_msgbuf.h"
|
||||
#include "opt_xbox.h"
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
@ -144,6 +145,10 @@ __FBSDID("$FreeBSD$");
|
||||
#include <machine/smp.h>
|
||||
#endif
|
||||
|
||||
#ifdef XBOX
|
||||
#include <machine/xbox.h>
|
||||
#endif
|
||||
|
||||
#if !defined(CPU_DISABLE_SSE) && defined(I686_CPU)
|
||||
#define CPU_ENABLE_SSE
|
||||
#endif
|
||||
@ -393,6 +398,13 @@ pmap_bootstrap(firstaddr, loadaddr)
|
||||
virtual_avail = va;
|
||||
|
||||
*CMAP1 = 0;
|
||||
|
||||
#ifdef XBOX
|
||||
/* FIXME: This is gross, but needed for the XBOX. Since we are in such
|
||||
* an early stadium, we cannot yet neatly map video memory ... :-(
|
||||
* Better fixes are very welcome! */
|
||||
if (!arch_i386_is_xbox)
|
||||
#endif
|
||||
for (i = 0; i < NKPT; i++)
|
||||
PTD[i] = 0;
|
||||
|
||||
|
||||
@ -47,6 +47,7 @@ __FBSDID("$FreeBSD$");
|
||||
#include "opt_npx.h"
|
||||
#include "opt_reset.h"
|
||||
#include "opt_cpu.h"
|
||||
#include "opt_xbox.h"
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
@ -94,6 +95,10 @@ __FBSDID("$FreeBSD$");
|
||||
#include <i386/isa/isa.h>
|
||||
#endif
|
||||
|
||||
#ifdef XBOX
|
||||
#include <machine/xbox.h>
|
||||
#endif
|
||||
|
||||
#ifndef NSFBUFS
|
||||
#define NSFBUFS (512 + maxusers * 16)
|
||||
#endif
|
||||
@ -536,6 +541,14 @@ cpu_reset_proxy()
|
||||
void
|
||||
cpu_reset()
|
||||
{
|
||||
#ifdef XBOX
|
||||
if (arch_i386_is_xbox) {
|
||||
/* Kick the PIC16L, it can reboot the box */
|
||||
pic16l_reboot();
|
||||
for (;;);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SMP
|
||||
u_int cnt, map;
|
||||
|
||||
|
||||
45
sys/i386/include/xbox.h
Normal file
45
sys/i386/include/xbox.h
Normal file
@ -0,0 +1,45 @@
|
||||
/*-
|
||||
* Copyright (c) 2005 Rink Springer
|
||||
* 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 AUTHOR ``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 AUTHOR 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.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
#ifndef _MACHINE_XBOX_H_
|
||||
#define _MACHINE_XBOX_H_
|
||||
|
||||
#define XBOX_LED_GREEN 0x0f
|
||||
#define XBOX_LED_RED 0xf0
|
||||
#define XBOX_LED_FLASHRED 0xa0
|
||||
#define XBOX_LED_FLASHGREEN 0x03
|
||||
|
||||
extern int arch_i386_is_xbox;
|
||||
extern uint32_t arch_i386_xbox_memsize; /* Megabytes */
|
||||
|
||||
void pic16l_setbyte(int addr, int reg, int data);
|
||||
void pic16l_setled(int val);
|
||||
void pic16l_reboot(void);
|
||||
void pic16l_poweroff(void);
|
||||
|
||||
#endif /* !_MACHINE_XBOX_H_ */
|
||||
@ -50,6 +50,7 @@ __FBSDID("$FreeBSD$");
|
||||
#include "opt_clock.h"
|
||||
#include "opt_isa.h"
|
||||
#include "opt_mca.h"
|
||||
#include "opt_xbox.h"
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
@ -90,6 +91,10 @@ __FBSDID("$FreeBSD$");
|
||||
#include <i386/bios/mca_machdep.h>
|
||||
#endif
|
||||
|
||||
#ifdef XBOX
|
||||
#include <machine/xbox.h>
|
||||
#endif
|
||||
|
||||
/*
|
||||
* 32-bit time_t's can't reach leap years before 1904 or after 2036, so we
|
||||
* can use a simple formula for leap years.
|
||||
@ -522,6 +527,11 @@ calibrate_clocks(void)
|
||||
return (tot_count);
|
||||
|
||||
fail:
|
||||
#ifdef XBOX
|
||||
if (arch_i386_is_xbox)
|
||||
timer_freq = 1125000; /* gives ~733.34MHz CPU clock */
|
||||
#endif
|
||||
|
||||
if (bootverbose)
|
||||
printf("failed, using default i8254 clock of %u Hz\n",
|
||||
timer_freq);
|
||||
|
||||
@ -30,6 +30,8 @@
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include "opt_xbox.h"
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/bus.h>
|
||||
@ -49,6 +51,10 @@ __FBSDID("$FreeBSD$");
|
||||
#include <vm/pmap.h>
|
||||
#include <machine/pmap.h>
|
||||
|
||||
#ifdef XBOX
|
||||
#include <machine/xbox.h>
|
||||
#endif
|
||||
|
||||
#define PRVERB(a) do { \
|
||||
if (bootverbose) \
|
||||
printf a ; \
|
||||
@ -207,6 +213,39 @@ pci_cfgenable(unsigned bus, unsigned slot, unsigned func, int reg, int bytes)
|
||||
{
|
||||
int dataport = 0;
|
||||
|
||||
#ifdef XBOX
|
||||
if (arch_i386_is_xbox) {
|
||||
/*
|
||||
* The Xbox MCPX chipset is a derivative of the nForce 1
|
||||
* chipset. It almost has the same bus layout; some devices
|
||||
* cannot be used, because they have been removed.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Devices 00:00.1 and 00:00.2 used to be memory controllers on
|
||||
* the nForce chipset, but on the Xbox, using them will lockup
|
||||
* the chipset.
|
||||
*/
|
||||
if (bus == 0 && slot == 0 && (func == 1 || func == 2))
|
||||
return dataport;
|
||||
|
||||
/*
|
||||
* Bus 1 only contains a VGA controller at 01:00.0. When you try
|
||||
* to probe beyond that device, you only get garbage, which
|
||||
* could cause lockups.
|
||||
*/
|
||||
if (bus == 1 && (slot != 0 || func != 0))
|
||||
return dataport;
|
||||
|
||||
/*
|
||||
* Bus 2 used to contain the AGP controller, but the Xbox MCPX
|
||||
* doesn't have one. Probing it can cause lockups.
|
||||
*/
|
||||
if (bus >= 2)
|
||||
return dataport;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (bus <= PCI_BUSMAX
|
||||
&& slot < devmax
|
||||
&& func <= PCI_FUNCMAX
|
||||
|
||||
202
sys/i386/xbox/pic16l.s
Normal file
202
sys/i386/xbox/pic16l.s
Normal file
@ -0,0 +1,202 @@
|
||||
/*-
|
||||
* Copyright (c) 2005 Rink Springer
|
||||
* 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 AUTHOR ``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 AUTHOR 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.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
#include <machine/asmacros.h>
|
||||
|
||||
.text
|
||||
|
||||
/*
|
||||
* send a command to the PIC16L
|
||||
*
|
||||
* void pic16l_setbyte (int addr, int reg, int data)
|
||||
*
|
||||
*/
|
||||
ENTRY(pic16l_setbyte)
|
||||
push %ebp
|
||||
mov %esp,%ebp
|
||||
|
||||
push %ebx
|
||||
|
||||
movw $0xc000,%dx
|
||||
|
||||
1: xor %eax,%eax
|
||||
inw %dx,%ax
|
||||
shr $0x0b,%eax
|
||||
and $0x01,%eax
|
||||
test %eax,%eax
|
||||
jne 1b
|
||||
|
||||
mov $50,%ecx
|
||||
2: movw $0xc004,%dx
|
||||
movl 0x8(%ebp),%eax
|
||||
outb %al,%dx
|
||||
movw $0xc008,%dx
|
||||
movl 0xc(%ebp),%eax
|
||||
outb %al,%dx
|
||||
movw $0xc006,%dx
|
||||
movl 0x10(%ebp),%eax
|
||||
outw %ax,%dx
|
||||
|
||||
movw $0xc000,%dx
|
||||
inw %dx,%ax
|
||||
outw %ax,%dx
|
||||
|
||||
movw $0xc002,%dx
|
||||
movb $0x1a,%al
|
||||
outb %al,%dx
|
||||
|
||||
movw $0xc000,%dx
|
||||
3:
|
||||
inb %dx,%al
|
||||
movb %al,%bl
|
||||
orb $0x36,%al
|
||||
jz 3b
|
||||
|
||||
orb $0x10,%bl
|
||||
jnz 5f
|
||||
|
||||
4:
|
||||
push %ecx
|
||||
xor %ecx,%ecx
|
||||
l: loop l
|
||||
pop %ecx
|
||||
|
||||
dec %ecx
|
||||
jz 5f
|
||||
jmp 2b
|
||||
5:
|
||||
|
||||
pop %ebx
|
||||
|
||||
leave
|
||||
ret
|
||||
|
||||
/*
|
||||
* instructs the pic16l to reboot the xbox
|
||||
*
|
||||
* void pic16l_reboot();
|
||||
*
|
||||
*/
|
||||
ENTRY(pic16l_reboot)
|
||||
pushl $0x01
|
||||
pushl $0x02
|
||||
pushl $0x20
|
||||
call pic16l_setbyte
|
||||
addl $12,%esp
|
||||
ret
|
||||
|
||||
/*
|
||||
* instructs the pic16l to power-off the xbox
|
||||
*
|
||||
* void pic16l_poweroff();
|
||||
*
|
||||
*/
|
||||
ENTRY(pic16l_poweroff)
|
||||
pushl $0x80
|
||||
pushl $0x02
|
||||
pushl $0x20
|
||||
call pic16l_setbyte
|
||||
addl $12,%esp
|
||||
ret
|
||||
|
||||
pic16l_ledhlp:
|
||||
movw $0xc000,%dx
|
||||
1: xor %eax,%eax
|
||||
inw %dx,%ax
|
||||
shr $0x0b,%eax
|
||||
and $0x01,%eax
|
||||
test %eax,%eax
|
||||
jne 1b
|
||||
|
||||
mov $400,%ecx
|
||||
|
||||
2:
|
||||
movw $0xc004,%dx
|
||||
movb $0x20,%al
|
||||
outb %al,%dx
|
||||
|
||||
movw $0xc008,%dx
|
||||
movb %bh,%al
|
||||
outb %al,%dx
|
||||
|
||||
movw $0xc006,%dx
|
||||
movb %bl,%al
|
||||
outb %al,%dx
|
||||
|
||||
movw $0xc000,%dx
|
||||
inw %dx,%ax
|
||||
outw %ax,%dx
|
||||
|
||||
movw $0xc002,%dx
|
||||
movb $0x1a,%al
|
||||
outb %al,%dx
|
||||
|
||||
movw $0xc000,%dx
|
||||
3:
|
||||
inb %dx,%al
|
||||
movb %al,%bl
|
||||
orb $0x36,%al
|
||||
jz 3b
|
||||
|
||||
orb $0x10,%bl
|
||||
jz 4f
|
||||
|
||||
ret
|
||||
|
||||
4:
|
||||
push %ecx
|
||||
xor %ecx,%ecx
|
||||
l2: loop l2
|
||||
pop %ecx
|
||||
dec %ecx
|
||||
jz 5f
|
||||
jmp 2b
|
||||
5:
|
||||
ret
|
||||
|
||||
/*
|
||||
* changes the front led
|
||||
*
|
||||
* void pic16l_setled (int val);
|
||||
*/
|
||||
ENTRY(pic16l_setled)
|
||||
push %ebp
|
||||
mov %esp,%ebp
|
||||
|
||||
push %ebx
|
||||
|
||||
movl 0x8(%ebp),%ebx
|
||||
orl $0x800,%ebx
|
||||
call pic16l_ledhlp
|
||||
movl $0x701,%ebx
|
||||
call pic16l_ledhlp
|
||||
|
||||
pop %ebx
|
||||
|
||||
leave
|
||||
ret
|
||||
60
sys/i386/xbox/xbox.c
Normal file
60
sys/i386/xbox/xbox.c
Normal file
@ -0,0 +1,60 @@
|
||||
/*-
|
||||
* Copyright (c) 2005 Rink Springer
|
||||
* 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 AUTHOR ``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 AUTHOR 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.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
#include <sys/param.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/eventhandler.h>
|
||||
#include <sys/reboot.h>
|
||||
#include <machine/xbox.h>
|
||||
#include "opt_global.h"
|
||||
|
||||
#ifndef I686_CPU
|
||||
#error You must have a I686_CPU in your kernel if you want to make an XBOX-compitable kernel
|
||||
#endif
|
||||
|
||||
static void
|
||||
xbox_poweroff(void* junk, int howto)
|
||||
{
|
||||
if (!(howto & RB_POWEROFF))
|
||||
return;
|
||||
|
||||
pic16l_poweroff();
|
||||
}
|
||||
|
||||
static void
|
||||
xbox_init(void)
|
||||
{
|
||||
if (!arch_i386_is_xbox)
|
||||
return;
|
||||
|
||||
/* register our poweroff function */
|
||||
EVENTHANDLER_REGISTER (shutdown_final, xbox_poweroff, NULL,
|
||||
SHUTDOWN_PRI_LAST);
|
||||
}
|
||||
|
||||
SYSINIT(xbox, SI_SUB_CONFIGURE, SI_ORDER_MIDDLE, xbox_init, NULL)
|
||||
398
sys/i386/xbox/xboxfb.c
Normal file
398
sys/i386/xbox/xboxfb.c
Normal file
@ -0,0 +1,398 @@
|
||||
/*-
|
||||
* Copyright (c) 2005 Rink Springer
|
||||
* 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 AUTHOR ``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 AUTHOR 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.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
/*
|
||||
* This will handles video output using the XBOX' frame buffer. It assumes
|
||||
* the graphics have been set up by Cromwell. This driver uses all video memory
|
||||
* to avoid expensive memcpy()'s.
|
||||
*
|
||||
* It is usuable as console (to see the initial boot) as well as for interactive
|
||||
* use. The latter is handeled using kbd_*() functionality. Keyboard hotplug is
|
||||
* fully supported, the console will periodically rescan if no keyboard was
|
||||
* found.
|
||||
*
|
||||
*/
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <vm/vm_param.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/cons.h>
|
||||
#include <sys/conf.h>
|
||||
#include <sys/consio.h>
|
||||
#include <sys/tty.h>
|
||||
#include <sys/kbio.h>
|
||||
#include <sys/fbio.h>
|
||||
#include <dev/kbd/kbdreg.h>
|
||||
#include <vm/vm.h>
|
||||
#include <vm/pmap.h>
|
||||
#include <machine/bus.h>
|
||||
#include <machine/xbox.h>
|
||||
#include <dev/fb/fbreg.h>
|
||||
#include <dev/fb/gfb.h>
|
||||
|
||||
#define SCREEN_WIDTH 640
|
||||
#define SCREEN_HEIGHT 480
|
||||
#define SCREEN_BPP 4
|
||||
#define SCREEN_SIZE (SCREEN_WIDTH*SCREEN_HEIGHT*SCREEN_BPP)
|
||||
|
||||
/* FONT_xxx declares the dimensions of the charachter structure, CHAR_xxx is how
|
||||
* they appear on-screen. Having slightly more spacing improves readability. */
|
||||
#define FONT_HEIGHT 16
|
||||
#define FONT_WIDTH 8
|
||||
|
||||
#define CHAR_HEIGHT 16
|
||||
#define CHAR_WIDTH 10
|
||||
|
||||
#define RAM_SIZE (arch_i386_xbox_memsize * 1024 * 1024)
|
||||
#define FB_SIZE (0x400000)
|
||||
#define FB_START (0xf0000000 | (RAM_SIZE - FB_SIZE))
|
||||
#define FB_START_PTR (0xFD600800)
|
||||
|
||||
/* colours */
|
||||
#define CONSOLE_COL 0xFF88FF88 /* greenish */
|
||||
#define NORM_COL 0xFFAAAAAA /* grayish */
|
||||
#define BLACK_COL 0x00000000 /* black */
|
||||
|
||||
static int xcon_x = 0;
|
||||
static int xcon_y = 0;
|
||||
static int xcon_yoffs = 0;
|
||||
|
||||
extern struct gfb_font bold8x16;
|
||||
|
||||
static char* xcon_map;
|
||||
static int* xcon_memstartptr;
|
||||
|
||||
static struct tty* xboxfb_tp = NULL;
|
||||
static struct keyboard* xbfb_kbd = NULL;
|
||||
static int xbfb_keyboard = -1;
|
||||
static d_open_t xboxfb_dev_open;
|
||||
static d_close_t xboxfb_dev_close;
|
||||
static int xboxfb_kbdevent(keyboard_t* thiskbd, int event, void* arg);
|
||||
|
||||
static struct cdevsw xboxfb_cdevsw = {
|
||||
.d_version = D_VERSION,
|
||||
.d_open = xboxfb_dev_open,
|
||||
.d_close = xboxfb_dev_close,
|
||||
.d_name = "xboxfb",
|
||||
.d_flags = D_TTY | D_NEEDGIANT,
|
||||
};
|
||||
|
||||
static void
|
||||
xcon_probe(struct consdev* cp)
|
||||
{
|
||||
if (arch_i386_is_xbox)
|
||||
cp->cn_pri = CN_REMOTE;
|
||||
else
|
||||
cp->cn_pri = CN_DEAD;
|
||||
}
|
||||
|
||||
static int
|
||||
xcon_getc(struct consdev* cp)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
xcon_checkc(struct consdev* cp)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
xcon_real_putc(int basecol, int c)
|
||||
{
|
||||
int i, j, ch = c, col;
|
||||
char mask;
|
||||
int* ptri = (int*)xcon_map;
|
||||
|
||||
/* special control chars */
|
||||
switch (ch) {
|
||||
case '\r': /* carriage return */
|
||||
xcon_x = 0;
|
||||
return;
|
||||
case '\n': /* newline */
|
||||
xcon_y += CHAR_HEIGHT;
|
||||
goto scroll;
|
||||
case 7: /* beep */
|
||||
return;
|
||||
case 8: /* backspace */
|
||||
if (xcon_x > 0) {
|
||||
xcon_x -= CHAR_WIDTH;
|
||||
} else {
|
||||
if (xcon_y > CHAR_HEIGHT) {
|
||||
xcon_y -= CHAR_HEIGHT;
|
||||
xcon_x = (SCREEN_WIDTH - CHAR_WIDTH);
|
||||
}
|
||||
}
|
||||
return;
|
||||
case 9: /* tab */
|
||||
xcon_real_putc (basecol, ' ');
|
||||
while ((xcon_x % (8 * CHAR_WIDTH)) != 0) {
|
||||
xcon_real_putc (basecol, ' ');
|
||||
}
|
||||
return;
|
||||
}
|
||||
ptri += (xcon_y * SCREEN_WIDTH) + xcon_x;
|
||||
|
||||
/* we plot the font pixel-by-pixel. bit 7 is skipped as it renders the
|
||||
* console unreadable ... */
|
||||
for (i = 0; i < FONT_HEIGHT; i++) {
|
||||
mask = 0x40;
|
||||
for (j = 0; j < FONT_WIDTH; j++) {
|
||||
col = (bold8x16.data[(ch * FONT_HEIGHT) + i] & mask) ? basecol : BLACK_COL;
|
||||
*ptri++ = col;
|
||||
mask >>= 1;
|
||||
}
|
||||
ptri += (SCREEN_WIDTH - FONT_WIDTH);
|
||||
}
|
||||
|
||||
xcon_x += CHAR_WIDTH;
|
||||
if (xcon_x >= SCREEN_WIDTH) {
|
||||
xcon_x = 0;
|
||||
xcon_y += CHAR_HEIGHT;
|
||||
}
|
||||
|
||||
scroll:
|
||||
if (((xcon_yoffs + CHAR_HEIGHT) * SCREEN_WIDTH * SCREEN_BPP) > (FB_SIZE - SCREEN_SIZE)) {
|
||||
/* we are about to run out of video memory, so move everything
|
||||
* back to the beginning of the video memory */
|
||||
memcpy ((char*)xcon_map,
|
||||
(char*)(xcon_map + (xcon_yoffs * SCREEN_WIDTH * SCREEN_BPP)),
|
||||
SCREEN_SIZE);
|
||||
xcon_y -= xcon_yoffs; xcon_yoffs = 0;
|
||||
*xcon_memstartptr = FB_START;
|
||||
}
|
||||
|
||||
/* we achieve much faster scrolling by just altering the video memory
|
||||
* address base. once all memory is used, we return to the beginning
|
||||
* again */
|
||||
while ((xcon_y - xcon_yoffs) >= SCREEN_HEIGHT) {
|
||||
xcon_yoffs += CHAR_HEIGHT;
|
||||
memset ((char*)(xcon_map + (xcon_y * SCREEN_WIDTH * SCREEN_BPP)), 0, CHAR_HEIGHT * SCREEN_WIDTH * SCREEN_BPP);
|
||||
*xcon_memstartptr = FB_START + (xcon_yoffs * SCREEN_WIDTH * SCREEN_BPP);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
xcon_putc(struct consdev* cp, int c)
|
||||
{
|
||||
xcon_real_putc (CONSOLE_COL, c);
|
||||
}
|
||||
|
||||
static void
|
||||
xcon_init(struct consdev* cp)
|
||||
{
|
||||
int i;
|
||||
int* iptr;
|
||||
|
||||
/* Don't init the framebuffer on non-XBOX-es */
|
||||
if (!arch_i386_is_xbox)
|
||||
return;
|
||||
|
||||
/*
|
||||
* We must make a mapping from video framebuffer memory to real. This is
|
||||
* very crude: we map the entire videomemory to PAGE_SIZE! Since our
|
||||
* kernel lives at it's relocated address range (0xc0xxxxxx), it won't
|
||||
* care.
|
||||
*
|
||||
* We use address PAGE_SIZE and up so we can still trap NULL pointers.
|
||||
* Once xboxfb_drvinit() is called, the mapping will be done via the OS
|
||||
* and stored in a more sensible location ... but since we're not fully
|
||||
* initialized, this is our only way to go :-(
|
||||
*/
|
||||
for (i = 0; i < (FB_SIZE / PAGE_SIZE); i++) {
|
||||
pmap_kenter (((i + 1) * PAGE_SIZE), FB_START + (i * PAGE_SIZE));
|
||||
}
|
||||
pmap_kenter ((i + 1) * PAGE_SIZE, FB_START_PTR - FB_START_PTR % PAGE_SIZE);
|
||||
xcon_map = (char*)PAGE_SIZE;
|
||||
xcon_memstartptr = (int*)((i + 1) * PAGE_SIZE + FB_START_PTR % PAGE_SIZE);
|
||||
|
||||
/* clear the screen */
|
||||
iptr = (int*)xcon_map;
|
||||
for (i = 0; i < SCREEN_HEIGHT * SCREEN_WIDTH; i++)
|
||||
*iptr++ = BLACK_COL;
|
||||
|
||||
sprintf(cp->cn_name, "xboxfb");
|
||||
cp->cn_tp = xboxfb_tp;
|
||||
}
|
||||
|
||||
static void
|
||||
xboxfb_timer(void* arg)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (xbfb_kbd != NULL)
|
||||
return;
|
||||
|
||||
i = kbd_allocate ("*", 0, (void*)&xbfb_keyboard, xboxfb_kbdevent, NULL);
|
||||
if (i != -1) {
|
||||
/* allocation was successfull; xboxfb_kbdevent() is called to
|
||||
* feed the keystrokes to the tty driver */
|
||||
xbfb_kbd = kbd_get_keyboard (i);
|
||||
xbfb_keyboard = i;
|
||||
return;
|
||||
}
|
||||
|
||||
/* probe again in a few */
|
||||
timeout (xboxfb_timer, NULL, hz / 10);
|
||||
}
|
||||
|
||||
static int
|
||||
xboxfb_kbdevent(keyboard_t* thiskbd, int event, void* arg)
|
||||
{
|
||||
int c;
|
||||
|
||||
if (event == KBDIO_UNLOADING) {
|
||||
/* keyboard was unplugged; clean up and enable probing */
|
||||
xbfb_kbd = NULL;
|
||||
xbfb_keyboard = -1;
|
||||
kbd_release (thiskbd, (void*)&xbfb_keyboard);
|
||||
timeout (xboxfb_timer, NULL, hz / 10);
|
||||
return 0;
|
||||
}
|
||||
|
||||
for (;;) {
|
||||
c = (kbdsw[xbfb_kbd->kb_index])->read_char (xbfb_kbd, 0);
|
||||
if (c == NOKEY)
|
||||
return 0;
|
||||
|
||||
/* only feed non-special keys to an open console */
|
||||
if (c != ERRKEY) {
|
||||
if ((KEYFLAGS(c)) == 0x0)
|
||||
if (xboxfb_tp->t_state & TS_ISOPEN)
|
||||
ttyld_rint (xboxfb_tp, KEYCHAR(c));
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
xboxfb_drvinit (void* unused)
|
||||
{
|
||||
struct cdev* dev;
|
||||
int i;
|
||||
|
||||
/* Don't init the framebuffer on non-XBOX-es */
|
||||
if (!arch_i386_is_xbox)
|
||||
return;
|
||||
|
||||
/*
|
||||
* When this function is called, the OS is capable of doing
|
||||
* device-memory mappings using pmap_mapdev(). Therefore, we ditch the
|
||||
* ugly PAGE_SIZE-based mapping and ask the OS to create a decent
|
||||
* mapping for us.
|
||||
*/
|
||||
dev = make_dev (&xboxfb_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600, "%s", "xboxfb");
|
||||
xcon_map = pmap_mapdev (FB_START, FB_SIZE);
|
||||
xcon_memstartptr = (int*)pmap_mapdev (FB_START_PTR, PAGE_SIZE);
|
||||
*xcon_memstartptr = FB_START;
|
||||
|
||||
/* ditch all ugly previous mappings */
|
||||
for (i = 0; i < (FB_SIZE / PAGE_SIZE); i++) {
|
||||
pmap_kremove (((i + 1) * PAGE_SIZE));
|
||||
}
|
||||
pmap_kremove (PAGE_SIZE + FB_SIZE);
|
||||
|
||||
/* probe for a keyboard */
|
||||
xboxfb_timer (NULL);
|
||||
}
|
||||
|
||||
static void
|
||||
xboxfb_tty_start(struct tty* tp)
|
||||
{
|
||||
struct clist* cl;
|
||||
int len, i;
|
||||
u_char buf[128];
|
||||
|
||||
if (tp->t_state & TS_BUSY)
|
||||
return;
|
||||
|
||||
/* simply feed all outstanding tty data to real_putc() */
|
||||
tp->t_state |= TS_BUSY;
|
||||
cl = &tp->t_outq;
|
||||
len = q_to_b(cl, buf, 128);
|
||||
for (i = 0; i < len; i++)
|
||||
xcon_real_putc(NORM_COL, buf[i]);
|
||||
tp->t_state &= ~TS_BUSY;
|
||||
}
|
||||
|
||||
static void
|
||||
xboxfb_tty_stop(struct tty* tp, int flag) {
|
||||
if (tp->t_state & TS_BUSY)
|
||||
if ((tp->t_state & TS_TTSTOP) == 0)
|
||||
tp->t_state |= TS_FLUSH;
|
||||
}
|
||||
|
||||
static int
|
||||
xboxfb_tty_param(struct tty* tp, struct termios* t)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
xboxfb_dev_open(struct cdev* dev, int flag, int mode, struct thread* td)
|
||||
{
|
||||
struct tty* tp;
|
||||
|
||||
tp = xboxfb_tp = dev->si_tty = ttymalloc (xboxfb_tp);
|
||||
|
||||
tp->t_oproc = xboxfb_tty_start;
|
||||
tp->t_param = xboxfb_tty_param;
|
||||
tp->t_stop = xboxfb_tty_stop;
|
||||
tp->t_dev = dev;
|
||||
|
||||
if ((tp->t_state & TS_ISOPEN) == 0) {
|
||||
tp->t_state |= TS_CARR_ON;
|
||||
ttychars(tp);
|
||||
tp->t_iflag = TTYDEF_IFLAG;
|
||||
tp->t_oflag = TTYDEF_OFLAG;
|
||||
tp->t_cflag = TTYDEF_CFLAG | CLOCAL;
|
||||
tp->t_lflag = TTYDEF_LFLAG;
|
||||
tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
|
||||
ttsetwater(tp);
|
||||
}
|
||||
|
||||
return ttyld_open (tp, dev);
|
||||
}
|
||||
|
||||
static int
|
||||
xboxfb_dev_close(struct cdev* dev, int flag, int mode, struct thread* td)
|
||||
{
|
||||
struct tty* tp;
|
||||
|
||||
tp = xboxfb_tp;
|
||||
ttyld_close (tp, flag);
|
||||
tty_close(tp);
|
||||
return 0;
|
||||
}
|
||||
|
||||
SYSINIT(xboxfbdev, SI_SUB_CONFIGURE, SI_ORDER_MIDDLE, xboxfb_drvinit, NULL)
|
||||
|
||||
CONS_DRIVER(xcon, xcon_probe, xcon_init, NULL, xcon_getc, xcon_checkc, xcon_putc, NULL);
|
||||
@ -50,6 +50,7 @@ __FBSDID("$FreeBSD$");
|
||||
#include "opt_clock.h"
|
||||
#include "opt_isa.h"
|
||||
#include "opt_mca.h"
|
||||
#include "opt_xbox.h"
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
@ -90,6 +91,10 @@ __FBSDID("$FreeBSD$");
|
||||
#include <i386/bios/mca_machdep.h>
|
||||
#endif
|
||||
|
||||
#ifdef XBOX
|
||||
#include <machine/xbox.h>
|
||||
#endif
|
||||
|
||||
/*
|
||||
* 32-bit time_t's can't reach leap years before 1904 or after 2036, so we
|
||||
* can use a simple formula for leap years.
|
||||
@ -522,6 +527,11 @@ calibrate_clocks(void)
|
||||
return (tot_count);
|
||||
|
||||
fail:
|
||||
#ifdef XBOX
|
||||
if (arch_i386_is_xbox)
|
||||
timer_freq = 1125000; /* gives ~733.34MHz CPU clock */
|
||||
#endif
|
||||
|
||||
if (bootverbose)
|
||||
printf("failed, using default i8254 clock of %u Hz\n",
|
||||
timer_freq);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user