cmd: Fix license command

The license command isn't usually built and has a few problems:
- The rules to generate license.h haven't worked in a long time,
  re-write these based on the bmp_logo.h rules.
- 'tok' is unused and the license text size has increased
- bin2header.c wasn't grabbing unistd.h to know the prototype for
  read().

Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Tom Rini <trini@konsulko.com>

Makefile

@@ -1405,8 +1405,6 @@ 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
 #########################################################################
 
 ###
@@ -1421,7 +1419,7 @@ CLEAN_DIRS  += $(MODVERDIR) \
 	       $(foreach d, spl tpl, $(patsubst %,$d/%, \
 			$(filter-out include, $(shell ls -1 $d 2>/dev/null))))
 
-CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h \
+CLEAN_FILES += include/bmp_logo.h include/bmp_logo_data.h include/license.h \
 	       boot* u-boot* MLO* SPL System.map
 
 # Directories & files removed with 'make mrproper'

cmd/license.c

@@ -7,7 +7,7 @@
 
 #include <common.h>
 
-/* COPYING is currently 15951 bytes in size */
+/* Licenses/gpl-2.0.txt is currently 18092 bytes in size */
 #define LICENSE_MAX	20480
 
 #include <command.h>
@@ -16,13 +16,13 @@
 
 int do_license(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
-	char *tok, *dst = malloc(LICENSE_MAX);
+	char *dst = malloc(LICENSE_MAX);
 	unsigned long len = LICENSE_MAX;
 
 	if (!dst)
 		return -1;
 
-	if (gunzip(dst, LICENSE_MAX, license_gz, &len) != 0) {
+	if (gunzip(dst, LICENSE_MAX, license_gzip, &len) != 0) {
 		printf("Error uncompressing license text\n");
 		free(dst);
 		return -1;

include/.gitignore

@@ -2,3 +2,4 @@
 /bmp_logo.h
 /bmp_logo_data.h
 /config.h
+/license.h

tools/Makefile

@@ -31,7 +31,6 @@ CONFIG_BUILD_ENVCRC ?= $(ENVCRC-y)
 
 hostprogs-$(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER) += atmel_pmecc_params
 
-# TODO: CONFIG_CMD_LICENSE does not work
 hostprogs-$(CONFIG_CMD_LICENSE) += bin2header
 hostprogs-$(CONFIG_LCD_LOGO) += bmp_logo
 hostprogs-$(CONFIG_VIDEO_LOGO) += bmp_logo
@@ -212,6 +211,10 @@ endif
 
 endif # !LOGO_BMP
 
+# Generated gziped GPL-2.0 license text
+LICENSE_H = $(objtree)/include/license.h
+LICENSE-$(CONFIG_CMD_LICENSE) += $(LICENSE_H)
+
 #
 # Use native tools and options
 # Define __KERNEL_STRICT_NAMES to prevent typedef overlaps
@@ -226,7 +229,7 @@ HOST_EXTRACFLAGS += -include $(srctree)/include/libfdt_env.h \
 		-D__KERNEL_STRICT_NAMES \
 		-D_GNU_SOURCE
 
-__build:	$(LOGO-y)
+__build:	$(LOGO-y) $(LICENSE-y)
 
 $(LOGO_H):	$(obj)/bmp_logo $(LOGO_BMP)
 	$(obj)/bmp_logo --gen-info $(LOGO_BMP) > $@
@@ -234,6 +237,10 @@ $(LOGO_H):	$(obj)/bmp_logo $(LOGO_BMP)
 $(LOGO_DATA_H):	$(obj)/bmp_logo $(LOGO_BMP)
 	$(obj)/bmp_logo --gen-data $(LOGO_BMP) > $@
 
+$(LICENSE_H): $(obj)/bin2header $(srctree)/Licenses/gpl-2.0.txt
+	cat $(srctree)/Licenses/gpl-2.0.txt | gzip -9 -c | \
+		$(obj)/bin2header license_gzip > $(LICENSE_H)
+
 # Let clean descend into subdirs
 subdir- += env
 

tools/bin2header.c

@@ -8,6 +8,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char **argv)
 {