[U-Boot-Users] [PATCH] add 'license' command to u-boot?commandline
Harald Welte
laforge at openmoko.org
Wed Jul 9 16:30:30 CEST 2008
Hi!
Since there has been support by Detlev and Stefan, I have modified the
patch in a way to dynamically create the include/license.h file from the
COPYING file by the use of a small C program and gzip combined with a
Makefile rule.
What do you think now?
---
[PATCH] 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 at openmoko.org>
diff --git a/Makefile b/Makefile
index ac3f98f..29204a8 100644
--- a/Makefile
+++ b/Makefile
@@ -457,6 +457,8 @@ CHANGELOG:
git log --no-merges U-Boot-1_1_5.. | \
unexpand -a | sed -e 's/\s\s*$$//' > $@
+include/license.h: tools/bin2header COPYING
+ cat COPYING | gzip -9 -c | ./tools/bin2header license_gzip > include/license.h
#########################################################################
unconfig:
diff --git a/common/Makefile b/common/Makefile
index 4287108..1d9f412 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -71,6 +71,7 @@ COBJS-$(CONFIG_CMD_IDE) += cmd_ide.o
COBJS-$(CONFIG_CMD_IMMAP) += cmd_immap.o
COBJS-$(CONFIG_CMD_ITEST) += cmd_itest.o
COBJS-$(CONFIG_CMD_JFFS2) += cmd_jffs2.o
+COBJS-$(CONFIG_CMD_LICENSE) += cmd_license.o
COBJS-y += cmd_load.o
COBJS-$(CONFIG_LOGBUFFER) += cmd_log.o
COBJS-y += cmd_mem.o
diff --git a/common/cmd_license.c b/common/cmd_license.c
new file mode 100644
index 0000000..301af8d
--- /dev/null
+++ b/common/cmd_license.c
@@ -0,0 +1,59 @@
+/*
+ * (C) Copyright 2007 by OpenMoko, Inc.
+ * Author: Harald Welte <laforge at 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 <common.h>
+
+#if defined(CONFIG_CMD_LICENSE)
+
+/* COPYING is currently 15951 bytes in size */
+#define LICENSE_MAX 20480
+
+#include <command.h>
+#include <malloc.h>
+#include <license.h>
+int gunzip(void *, int, unsigned char *, unsigned long *);
+
+int do_license(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ char *tok, *dst = malloc(LICENSE_MAX);
+ unsigned long len = LICENSE_MAX;
+
+ if (!dst)
+ return -1;
+
+ if (gunzip(dst, LICENSE_MAX, license_gz, &len) != 0) {
+ printf("Error uncompressing license text\n");
+ free(dst);
+ return -1;
+ }
+ puts(dst);
+ free(dst);
+
+ return 0;
+}
+
+U_BOOT_CMD(license, 1, 1, do_license,
+ "license - print GPL license text\n",
+ NULL);
+
+#endif /* CONFIG_CMD_LICENSE */
diff --git a/include/config_cmd_all.h b/include/config_cmd_all.h
index c2bb094..adc2489 100644
--- a/include/config_cmd_all.h
+++ b/include/config_cmd_all.h
@@ -50,6 +50,7 @@
#define CONFIG_CMD_ITEST /* Integer (and string) test */
#define CONFIG_CMD_JFFS2 /* JFFS2 Support */
#define CONFIG_CMD_KGDB /* kgdb */
+#define CONFIG_CMD_LICENSE /* console license display */
#define CONFIG_CMD_LOADB /* loadb */
#define CONFIG_CMD_LOADS /* loads */
#define CONFIG_CMD_MEMORY /* md mm nm mw cp cmp crc base loop mtest */
diff --git a/tools/Makefile b/tools/Makefile
index 8533a8e..21ea1c2 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 0000000..32e4d84
--- /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 at 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);
+}
--
- Harald Welte <laforge at openmoko.org> http://openmoko.org/
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