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Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:07:32 2008 UTC (16 years, 3 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)

/*	$OpenBSD: atomic.h,v 1.3 2007/03/23 21:07:36 miod Exp $	*/

/* Public Domain */

#ifndef __MIPS64_ATOMIC_H__
#define __MIPS64_ATOMIC_H__

#if defined(_KERNEL)

static __inline void
atomic_setbits_int(__volatile unsigned int *uip, unsigned int v)
{
	unsigned int tmp;

	__asm__ __volatile__ (
	"1:	ll	%0,	0(%1)\n"
	"	or	%0,	%2,	%0\n"
	"	sc	%0,	0(%1)\n"
	"	beqz	%0,	1b\n"
	"	 nop\n" :
		"+r"(tmp) :
		"r"(uip), "r"(v) : "memory");
}

static __inline void
atomic_clearbits_int(__volatile unsigned int *uip, unsigned int v)
{
	unsigned int tmp;

	__asm__ __volatile__ (
	"1:	ll	%0,	0(%1)\n"
	"	and	%0,	%2,	%0\n"
	"	sc	%0,	0(%1)\n"
	"	beqz	%0,	1b\n"
	"	 nop\n" :
		"+r"(tmp) :
		"r"(uip), "r"(~v) : "memory");
}

#endif /* defined(_KERNEL) */
#endif /* __MIPS64_ATOMIC_H__ */