Add 'license' command to U-Boot command line

The 'license' command includes the U-Boot license (GPLv2) into the
actual bootloader binary. The license text can be shown interactively
at the U-Boot commandline.

For products where the commandline can actually be accessed by the
end user, this helps to prevent inadvertent GPL violations, since the
GPLv2 license text can no longer be 'forgotten' to be included into
the product.

The 'license' command can be enabled by CONFIG_CMD_LICENSE.

Signed-off-by: Harald Welte <laforge@openmoko.org>

2 files changed, 60 insertions, 0 deletions

diff --git a/tools/Makefile b/tools/Makefile
index 8533a8e5ced..21ea1c204f4 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -171,6 +171,10 @@ $(obj)mpc86x_clk$(SFX):	$(obj)mpc86x_clk.o
 		$(CC) $(CFLAGS) $(HOST_LDFLAGS) -o $@ $^
 		$(STRIP) $@
 
+$(obj)bin2header$(SFX): $(obj)bin2header.o
+		$(CC) $(CFLAGS) $(HOST_LDFLAGS) -o $@ $^
+		$(STRIP) $@
+
 $(obj)envcrc.o:	$(src)envcrc.c
 		$(CC) -g $(CFLAGS) -c -o $@ $<
 
diff --git a/tools/bin2header.c b/tools/bin2header.c
new file mode 100644
index 00000000000..390100e2478
--- /dev/null
+++ b/tools/bin2header.c
@@ -0,0 +1,56 @@
+/* bin2header.c - program to convert binary file into a C structure
+ * definition to be included in a header file.
+ *
+ * (C) Copyright 2008 by Harald Welte <laforge@openmoko.org>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int main(int argc, char **argv)
+{
+	if (argc < 2) {
+		fprintf(stderr, "%s needs one argument: the structure name\n",
+			argv[0]);
+		exit(1);
+	}
+
+	printf("/* bin2header output - automatically generated */\n");
+	printf("unsigned char %s[] = {\n", argv[1]);
+
+	while (1) {
+		int i, nread;
+		unsigned char buf[10];
+		nread = read(0, buf, sizeof(buf));
+		if (nread <= 0)
+			break;
+
+		printf("\t");
+		for (i = 0; i < nread - 1; i++)
+			printf("0x%02x, ", buf[i]);
+
+		printf("0x%02x,\n", buf[nread-1]);
+	}
+
+	printf("};\n");
+
+	exit(0);
+}