The first steps of a native OpenBSD/luna88k bootloader. Able to boot ELF

kernels with symbols from disk or network.
Based upon the NetBSD/luna68k bootloader which got recently overhauled from
4.3BSD (thanks, tsutsui@ !), updated to match the luna88k hardware layout
and turned into a polling-only binary.
Tested on luna88k (not -2) only so far.

1 files changed, 249 insertions, 0 deletions

diff --git a/sys/arch/luna88k/stand/boot/sio.c b/sys/arch/luna88k/stand/boot/sio.c
new file mode 100644
index 00000000000..c279fa994f5
--- /dev/null
+++ b/sys/arch/luna88k/stand/boot/sio.c
@@ -0,0 +1,249 @@
+/*	$OpenBSD: sio.c,v 1.1 2013/10/28 22:13:13 miod Exp $	*/
+/*	$NetBSD: sio.c,v 1.3 2013/01/21 11:58:12 tsutsui Exp $	*/
+
+/*
+ * Copyright (c) 1992 OMRON Corporation.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * OMRON Corporation.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ *
+ *	@(#)sio.c	8.1 (Berkeley) 6/10/93
+ */
+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * OMRON Corporation.
+ *
+ * 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. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ *
+ *	@(#)sio.c	8.1 (Berkeley) 6/10/93
+ */
+
+/* sio.c   NOV-25-1991 */
+
+#define NSIO 2
+
+#include <sys/param.h>
+#include <luna88k/stand/boot/samachdep.h>
+#include <luna88k/stand/boot/sioreg.h>
+#include <luna88k/stand/boot/rcvbuf.h>
+#include <luna88k/stand/boot/kbdreg.h>
+
+static int siointr(int);
+static int sioreg(int, int);
+
+struct rcvbuf	rcvbuf[NSIO];
+
+int	sioconsole = -1;
+struct	siodevice *sio_addr[2];
+int	cur_unit;
+
+
+#define	siounit(x)	( x & 0xffff )
+#define isprint(c)      ((c >= 0x20) && (c < 0x7F) ? 1 : 0)
+
+
+void
+_siointr(void)
+{
+	int unit;
+
+	for (unit = 0; unit < NSIO; unit++)
+		while (siointr(unit) != 0)
+			continue;
+}
+
+int
+siointr(int unit)
+{
+/*	struct siodevice *sio = sio_addr[unit]; */
+	int rr0 = sioreg(REG(unit, RR0), 0);
+	int rr1 = sioreg(REG(unit, RR1), 0);
+
+	if (rr0 & RR0_RXAVAIL) {
+		if (rr1 & RR1_FRAMING)
+			return 1;
+
+		if (rr1 & (RR1_PARITY | RR1_OVERRUN))
+		    sioreg(REG(unit, WR0), WR0_ERRRST); /* Channel-A Error Reset */
+
+		if (unit == 1) {
+			int c = kbd_decode(sio_addr[unit]->sio_data);
+
+			if ((c & KC_TYPE) == KC_CODE)
+				PUSH_RBUF(unit, c);
+		} else {
+			PUSH_RBUF(unit, sio_addr[unit]->sio_data);
+		}
+		return 1;
+	}
+
+	return 0;
+}
+
+/*
+ * Following are all routines needed for SIO to act as console
+ */
+#include <dev/cons.h>
+
+void
+siocnprobe(struct consdev *cp)
+{
+	sio_addr[0] = (struct siodevice *) 0x51000000;
+	sio_addr[1] = (struct siodevice *) 0x51000008;
+
+	/* make sure hardware exists */
+	if (badaddr(sio_addr[0], 4) != 0) {
+		cp->cn_pri = CN_DEAD;
+		return;
+	}
+
+	/* locate the major number */
+
+	/* initialize required fields */
+	cp->cn_dev = cur_unit = 0;
+	cp->cn_pri = CN_LOWPRI;
+}
+
+void
+siocninit(struct consdev *cp)
+{
+	int unit = siounit(cp->cn_dev);
+
+	sioinit();
+	sioconsole = unit;
+}
+
+int
+siocngetc(dev_t dev)
+{
+	int c, unit = siounit(dev);
+
+	_siointr();
+	if (RBUF_EMPTY(unit))
+		return 0;
+
+	POP_RBUF(unit, c);
+
+	return(c);
+}
+
+void
+siocnputc(dev_t dev, int c)
+{
+	int unit = siounit(dev);
+
+	if (sioconsole == -1) {
+		(void) sioinit();
+		sioconsole = unit;
+	}
+
+	/* wait for any pending transmission to finish */
+	while ((sioreg(REG(unit, RR0), 0) & RR0_TXEMPTY) == 0);
+
+	sio_addr[unit]->sio_data = (c & 0xFF);
+
+	/* wait for any pending transmission to finish */
+	while ((sioreg(REG(unit, RR0), 0) & RR0_TXEMPTY) == 0);
+}
+
+/* SIO misc routines */
+
+void
+sioinit(void)
+{
+	RBUF_INIT(0);
+	RBUF_INIT(1);
+
+	sioreg(REG(0, WR0), WR0_CHANRST);		/* Channel-A Reset */
+
+	sioreg(WR2A, WR2_VEC86  | WR2_INTR_1);		/* Set CPU BUS Interface Mode */
+	sioreg(WR2B, 0);				/* Set Interrupt Vector */
+
+	sioreg(REG(0, WR0), WR0_RSTINT);		/* Reset E/S Interrupt */
+	sioreg(REG(0, WR4), WR4_BAUD96 | WR4_STOP1 | WR4_NPARITY);	/* Tx/Rx */
+	sioreg(REG(0, WR3), WR3_RX8BIT | WR3_RXENBL);		/* Rx */
+	sioreg(REG(0, WR5), WR5_TX8BIT | WR5_TXENBL | WR5_DTR | WR5_RTS);		/* Tx */
+	sioreg(REG(0, WR0), WR0_RSTINT);		/* Reset E/S Interrupt */
+	sioreg(REG(0, WR1), WR1_RXALLS);		/* Interrupted All Char. */
+
+	sioreg(REG(1, WR0), WR0_CHANRST);		/* Channel-A Reset */
+
+	sioreg(REG(1, WR0), WR0_RSTINT);		/* Reset E/S Interrupt */
+	sioreg(REG(1, WR4), WR4_BAUD96 | WR4_STOP1 | WR4_NPARITY);	/* Tx/Rx */
+	sioreg(REG(1, WR3), WR3_RX8BIT | WR3_RXENBL);		/* Rx */
+	sioreg(REG(1, WR5), WR5_TX8BIT | WR5_TXENBL);		/* Tx */
+	sioreg(REG(1, WR0), WR0_RSTINT);		/* Reset E/S Interrupt */
+	sioreg(REG(1, WR1), WR1_RXALLS);		/* Interrupted All Char. */
+}
+
+int
+sioreg(int reg, int val)
+{
+	int chan;
+
+	chan = CHANNEL(reg);
+
+	if (isStatusReg(reg)) {
+		if (REGNO(reg) != 0)
+		    sio_addr[chan]->sio_cmd = REGNO(reg);
+		return(sio_addr[chan]->sio_stat);
+	} else {
+		if (REGNO(reg) != 0)
+		    sio_addr[chan]->sio_cmd = REGNO(reg);
+		sio_addr[chan]->sio_cmd = val;
+		return(val);
+	}
+}