Support for CFE boot loaders. Initially the support is for MIPS, but

other processors will work too.

Submitted by:	bms@
Obtained from:	p4 mips2 branch

1 files changed, 159 insertions, 0 deletions

diff --git a/sys/dev/cfe/cfe_resource.c b/sys/dev/cfe/cfe_resource.c
new file mode 100644
index 0000000..125fe6c
--- /dev/null
+++ b/sys/dev/cfe/cfe_resource.c
@@ -0,0 +1,159 @@
+/*-
+ * Copyright (c) 2007 Bruce M. Simpson.
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+/*
+ * Driver to swallow up memory ranges reserved by CFE platform firmware.
+ * CFE on Sentry5 doesn't specify reserved ranges, so this is not useful
+ * at the present time.
+ * TODO: Don't attach this off nexus.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/socket.h>
+
+#include <sys/module.h>
+#include <sys/bus.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+#include <sys/rman.h>
+
+#include <dev/cfe/cfe_api.h>
+#include <dev/cfe/cfe_error.h>
+
+#define MAX_CFE_RESERVATIONS 16
+
+struct cferes_softc {
+	int		 rnum;
+	int		 rid[MAX_CFE_RESERVATIONS];
+	struct resource	*res[MAX_CFE_RESERVATIONS];
+};
+
+static int
+cferes_probe(device_t dev)
+{
+
+	return (0);
+}
+
+static int
+cferes_attach(device_t dev)
+{
+
+	return (0);
+}
+
+static void
+cferes_identify(driver_t* driver, device_t parent)
+{
+	device_t		 child;
+	int			 i;
+	struct resource		*res;
+	int			 result;
+	int			 rid;
+	struct cferes_softc	*sc;
+	uint64_t		 addr, len, type;
+
+	child = BUS_ADD_CHILD(parent, 100, "cferes", -1);
+	device_set_driver(child, driver);
+	sc = device_get_softc(child);
+
+	sc->rnum = 0;
+	for (i = 0; i < ~0U; i++) {
+		result = cfe_enummem(i, CFE_FLG_FULL_ARENA, &addr, &len, &type);
+		if (result < 0)
+			break;
+		if (type != CFE_MI_RESERVED) {
+			if (bootverbose)
+			printf("%s: skipping non reserved range 0x%0jx(%jd)\n",
+			    device_getnameunit(child),
+			    (uintmax_t)addr, (uintmax_t)len);
+			continue;
+		}
+
+		bus_set_resource(child, SYS_RES_MEMORY, sc->rnum, addr, len);
+		rid = sc->rnum;
+		res = bus_alloc_resource_any(child, SYS_RES_MEMORY, &rid, 0);
+		if (res == NULL) {
+			bus_delete_resource(child, SYS_RES_MEMORY, sc->rnum);
+			continue;
+		}
+		sc->rid[sc->rnum] = rid;
+		sc->res[sc->rnum] = res;
+
+		sc->rnum++;
+		if (sc->rnum == MAX_CFE_RESERVATIONS)
+			break;
+	}
+
+	if (sc->rnum == 0) {
+		device_delete_child(parent, child);
+		return;
+	}
+
+	device_set_desc(child, "CFE reserved memory");
+}
+
+static int
+cferes_detach(device_t dev)
+{
+	int			i;
+	struct cferes_softc	*sc = device_get_softc(dev);
+
+	for (i = 0; i < sc->rnum; i++) {
+		bus_release_resource(dev, SYS_RES_MEMORY, sc->rid[i],
+		    sc->res[i]);
+	}
+
+	return (0);
+}
+
+static device_method_t cferes_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_identify,	cferes_identify),
+	DEVMETHOD(device_probe,		cferes_probe),
+	DEVMETHOD(device_attach,	cferes_attach),
+	DEVMETHOD(device_detach,	cferes_detach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+	DEVMETHOD(device_suspend,	bus_generic_suspend),
+	DEVMETHOD(device_resume,	bus_generic_resume),
+	{ 0, 0 }
+};
+
+static driver_t cferes_driver = {
+	"cferes",
+	cferes_methods,
+	sizeof (struct cferes_softc)
+};
+
+static devclass_t cferes_devclass;
+
+DRIVER_MODULE(cfe, nexus, cferes_driver, cferes_devclass, 0, 0);