File: [local] / sys / arch / zaurus / stand / zboot / unixsys.S (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:08:50 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
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/* $OpenBSD: unixsys.S,v 1.6 2005/05/24 20:38:20 uwe Exp $ */
/*
* Copyright (c) 2005 Uwe Stuehler <uwe@bsdx.de>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <machine/asm.h>
#include "compat_linux.h"
.text
#define RSYSCALL(x) \
ENTRY(u##x); \
swi __NR_##x; \
b 1f
RSYSCALL(exit)
RSYSCALL(read)
RSYSCALL(write)
RSYSCALL(open)
RSYSCALL(close)
RSYSCALL(lseek32)
RSYSCALL(ioctl)
RSYSCALL(stat)
1:
cmn r0, #4096
movcc pc, lr
rsb r0, r0, #0
ldr r1, .Lerrno /* XXX clobbers arg1 */
str r0, [r1]
mvn r0, #0
mov pc, lr
.Lerrno:
.word errno
/* XXX only works for up to four arguments. */
ENTRY(syscall)
swi __NR_syscall
b 1b
ENTRY(uselect)
str r4, [sp, #-4]!
ldr r4, [sp, #4]
swi __NR_select
ldr r4, [sp], #4
cmn r0, #4096
movcc pc, lr
rsb r0, r0, #0
str r1, [sp, #-4]!
ldr r1, .Lerrno
str r0, [r1]
ldr r1, [sp], #4
mvn r0, #0
mov pc, lr
.data
.global errno
errno:
.word 0