add cfi test tool

Sponsored by:	Carlson Wireless
Reviewed by:	imp, Chris Andreson

tools/tools/README

@@ -12,6 +12,7 @@ ansify		Convert K&R-style function definitions to ANSI style
 ath		Tools specific to the Atheros 802.11 support
 backout_commit	A tool for reading in a commit message and generating
 		a script that will backout the commit.
+cfi		Common Flash Interface (CFI) tool
 commitsdb	A tool for reconstructing commit history using md5
 		checksums of the commit logs.
 crypto		Test and exercise tools related to the crypto framework

tools/tools/cfi/Makefile

@@ -0,0 +1,7 @@
+# $FreeBSD$
+
+PROG=	cfi
+BINDIR=	/usr/local/bin
+NO_MAN=
+
+.include <bsd.prog.mk>

tools/tools/cfi/cfi.c

@@ -0,0 +1,156 @@
+/*-
+ * Copyright (c) 2009 Sam Leffler, Errno Consulting
+ * 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,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+ *    redistribution must be conditioned upon including a substantially
+ *    similar Disclaimer requirement for further binary redistribution.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * cfi [-f device] op
+ * (default device is /dev/cfi0).
+ */
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+#include <sys/cfictl.h>
+
+#include <stdio.h>
+#include <getopt.h>
+#include <stdlib.h>
+
+const char *progname;
+const char *dvname;
+
+static void
+usage(void)
+{
+	int i;
+
+	fprintf(stderr, "usage: %s [-f device] op...\n", progname);
+	fprintf(stderr, "where op's are:\n");
+	fprintf(stderr, "fact\t\tread factory PR segment\n");
+	fprintf(stderr, "oem\t\tread OEM segment\n");
+	fprintf(stderr, "woem value\twrite OEM segment\n");
+	fprintf(stderr, "plr\t\tread PLR\n");
+	fprintf(stderr, "wplr\t\twrite PLR\n");
+	exit(-1);
+}
+
+static int
+getfd(int mode)
+{
+	int fd = open(dvname, mode, 0);
+	if (fd < 0)
+		err(-1, "open");
+	return fd;
+}
+
+static uint64_t
+getfactorypr(void)
+{
+	uint64_t v;
+	int fd = getfd(O_RDONLY);
+	if (ioctl(fd, CFIOCGFACTORYPR, &v) < 0)
+		err(-1, "ioctl(CFIOCGFACTORYPR)");
+	close(fd);
+	return v;
+}
+
+static uint64_t
+getoempr(void)
+{
+	uint64_t v;
+	int fd = getfd(O_RDONLY);
+	if (ioctl(fd, CFIOCGOEMPR, &v) < 0)
+		err(-1, "ioctl(CFIOCGOEMPR)");
+	close(fd);
+	return v;
+}
+
+static void
+setoempr(uint64_t v)
+{
+	int fd = getfd(O_WRONLY);
+	if (ioctl(fd, CFIOCSOEMPR, &v) < 0)
+		err(-1, "ioctl(CFIOCGOEMPR)");
+	close(fd);
+}
+
+static uint32_t
+getplr(void)
+{
+	uint32_t plr;
+	int fd = getfd(O_RDONLY);
+	if (ioctl(fd, CFIOCGPLR, &plr) < 0)
+		err(-1, "ioctl(CFIOCGPLR)");
+	close(fd);
+	return plr;
+}
+
+static void
+setplr(void)
+{
+	int fd = getfd(O_WRONLY);
+	if (ioctl(fd, CFIOCSPLR, 0) < 0)
+		err(-1, "ioctl(CFIOCPLR)");
+	close(fd);
+}
+
+int
+main(int argc, char *argv[])
+{
+	dvname = getenv("CFI");
+	if (dvname == NULL)
+		dvname = "/dev/cfi0";
+	progname = argv[0];
+	if (argc > 1) {
+		if (strcmp(argv[1], "-f") == 0) {
+			if (argc < 2)
+				errx(1, "missing device name for -f option");
+			dvname = argv[2];
+			argc -= 2, argv += 2;
+		} else if (strcmp(argv[1], "-?") == 0)
+			usage();
+	}
+	for (; argc > 1; argc--, argv++) {
+		if (strcasecmp(argv[1], "fact") == 0) {
+			printf("0x%llx\n", (unsigned long long) getfactorypr());
+		} else if (strcasecmp(argv[1], "oem") == 0) {
+			printf("0x%llx\n", (unsigned long long) getoempr());
+		} else if (strcasecmp(argv[1], "woem") == 0) {
+			if (argc < 2)
+				errx(1, "missing value for woem");
+			setoempr((uint64_t) strtoull(argv[2], NULL, 0));
+			argc--, argv++;
+		} else if (strcasecmp(argv[1], "plr") == 0) {
+			printf("0x%x\n", getplr());
+		} else if (strcasecmp(argv[1], "wplr") == 0) {
+			setplr();
+		} else
+			usage();
+	}
+}