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Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:07:46 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: db_interface.c,v 1.1 2002/06/08 16:02:14 miod Exp $	*/
/*      $NetBSD: db_interface.c,v 1.12 2001/07/22 11:29:46 wiz Exp $ */

#include <sys/param.h>
#include <sys/proc.h>
#include <sys/systm.h>

#include <dev/cons.h>

#include <machine/db_machdep.h>
#include <ddb/db_extern.h>

int ddb_trap_glue(struct trapframe *frame); /* called from locore */

void
Debugger()
{
#ifdef DDB
	ddb_trap();
#else
	mvmeprom_return();
#endif
}

#ifdef DDB

int
ddb_trap_glue(frame)
	struct trapframe *frame;
{
	if (!(frame->srr1 & PSL_PR)
	    && (frame->exc == EXC_TRC
		|| (frame->exc == EXC_PGM
		    && (frame->srr1 & 0x20000))
		|| frame->exc == EXC_BPT)) {

		bcopy(frame->fixreg, DDB_REGS->tf.fixreg,
			32 * sizeof(u_int32_t));
		DDB_REGS->tf.srr0 = frame->srr0;
		DDB_REGS->tf.srr1 = frame->srr1;

		cnpollc(TRUE);
		db_trap(T_BREAKPOINT, 0);
		cnpollc(FALSE);

		bcopy(DDB_REGS->tf.fixreg, frame->fixreg,
			32 * sizeof(u_int32_t));

		return 1;
	}
	return 0;
}

#endif