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Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:04:49 2008 UTC (16 years, 4 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: getsecs.c,v 1.2 1996/11/27 19:54:55 niklas Exp $	*/

#include <sys/param.h>
#include "include/rpb.h"
#include "include/prom.h"

int
getsecs()
{
	static long tnsec;
	static long lastpcc, wrapsecs;
	long curpcc, pccdiff;

	if (tnsec == 0) {
		tnsec = 1;
		lastpcc = alpha_rpcc() & 0xffffffff;
		wrapsecs = (0xffffffff /
		    ((struct rpb *)HWRPB_ADDR)->rpb_cc_freq) + 1;

#if 0
		printf("getsecs: cc freq = %d, time to wrap = %d\n",
		    ((struct rpb *)HWRPB_ADDR)->rpb_cc_freq, wrapsecs);
#endif
	}

	curpcc = alpha_rpcc() & 0xffffffff;
	if (curpcc < lastpcc)
		curpcc += 0x100000000;

	tnsec += ((curpcc - lastpcc) * 1000000000) / ((struct rpb *)HWRPB_ADDR)->rpb_cc_freq;
	lastpcc = curpcc;

	return (tnsec / 1000000000);
}