tools: logo: split bmp arrays from bmp_logo.h

The generated header bmp_logo.h is useful even outside common/lcd.c for
the logo dimension.  However, the problem is, the generated bmp_logo.h
cannot be included multiple times because bmp_logo_palette[] and
bmp_logo_bitmap[] are defined in the bmp_logo.h.

This patch fixes this by defining these arrays in another header
bmp_logo_data.h and in bmp_logo.h only declaring these arrays.

Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>

2 files changed, 67 insertions, 21 deletions

diff --git a/tools/Makefile b/tools/Makefile
index df56a25..948ec19 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -111,8 +111,11 @@ LIBFDT_OBJ_FILES-y += fdt_wip.o
 
 # Generated LCD/video logo
 LOGO_H = $(OBJTREE)/include/bmp_logo.h
+LOGO_DATA_H = $(OBJTREE)/include/bmp_logo_data.h
 LOGO-$(CONFIG_LCD_LOGO) += $(LOGO_H)
+LOGO-$(CONFIG_LCD_LOGO) += $(LOGO_DATA_H)
 LOGO-$(CONFIG_VIDEO_LOGO) += $(LOGO_H)
+LOGO-$(CONFIG_VIDEO_LOGO) += $(LOGO_DATA_H)
 
 ifeq ($(LOGO_BMP),)
 LOGO_BMP= logos/denx.bmp
@@ -236,7 +239,10 @@ else
 endif
 
 $(LOGO_H):	$(obj)bmp_logo $(LOGO_BMP)
-	$(obj)./bmp_logo $(LOGO_BMP) >$@
+	$(obj)./bmp_logo --gen-info $(LOGO_BMP) > $@
+
+$(LOGO_DATA_H):	$(obj)bmp_logo $(LOGO_BMP)
+	$(obj)./bmp_logo --gen-data $(LOGO_BMP) > $@
 
 #########################################################################
 
diff --git a/tools/bmp_logo.c b/tools/bmp_logo.c
index 47228d2..b2ad3d5 100644
--- a/tools/bmp_logo.c
+++ b/tools/bmp_logo.c
@@ -1,5 +1,10 @@
 #include "compiler.h"
 
+enum {
+	MODE_GEN_INFO,
+	MODE_GEN_DATA
+};
+
 typedef struct bitmap_s {		/* bitmap description */
 	uint16_t width;
 	uint16_t height;
@@ -9,6 +14,11 @@ typedef struct bitmap_s {		/* bitmap description */
 
 #define DEFAULT_CMAP_SIZE	16	/* size of default color map	*/
 
+void usage(const char *prog)
+{
+	fprintf(stderr, "Usage: %s [--gen-info|--gen-data] file\n", prog);
+}
+
 /*
  * Neutralize little endians.
  */
@@ -39,21 +49,52 @@ int error (char * msg, FILE *fp)
 	exit (EXIT_FAILURE);
 }
 
+void gen_info(bitmap_t *b, uint16_t n_colors)
+{
+	printf("/*\n"
+		" * Automatically generated by \"tools/bmp_logo\"\n"
+		" *\n"
+		" * DO NOT EDIT\n"
+		" *\n"
+		" */\n\n\n"
+		"#ifndef __BMP_LOGO_H__\n"
+		"#define __BMP_LOGO_H__\n\n"
+		"#define BMP_LOGO_WIDTH\t\t%d\n"
+		"#define BMP_LOGO_HEIGHT\t\t%d\n"
+		"#define BMP_LOGO_COLORS\t\t%d\n"
+		"#define BMP_LOGO_OFFSET\t\t%d\n\n"
+		"extern unsigned short bmp_logo_palette[];\n"
+		"extern unsigned char bmp_logo_bitmap[];\n\n"
+		"#endif /* __BMP_LOGO_H__ */\n",
+		b->width, b->height, n_colors,
+		DEFAULT_CMAP_SIZE);
+}
+
 int main (int argc, char *argv[])
 {
-	int	i, x;
+	int	mode, i, x;
 	FILE	*fp;
 	bitmap_t bmp;
 	bitmap_t *b = &bmp;
 	uint16_t data_offset, n_colors;
 
-	if (argc < 2) {
-		fprintf (stderr, "Usage: %s file\n", argv[0]);
+	if (argc < 3) {
+		usage(argv[0]);
 		exit (EXIT_FAILURE);
 	}
 
-	if ((fp = fopen (argv[1], "rb")) == NULL) {
-		perror (argv[1]);
+	if (!strcmp(argv[1], "--gen-info"))
+		mode = MODE_GEN_INFO;
+	else if (!strcmp(argv[1], "--gen-data"))
+		mode = MODE_GEN_DATA;
+	else {
+		usage(argv[0]);
+		exit(EXIT_FAILURE);
+	}
+
+	fp = fopen(argv[2], "rb");
+	if (!fp) {
+		perror(argv[2]);
 		exit (EXIT_FAILURE);
 	}
 
@@ -92,28 +133,26 @@ int main (int argc, char *argv[])
 		n_colors = 256 - DEFAULT_CMAP_SIZE;
 	}
 
-	printf ("/*\n"
+	if (mode == MODE_GEN_INFO) {
+		gen_info(b, n_colors);
+		goto out;
+	}
+
+	printf("/*\n"
 		" * Automatically generated by \"tools/bmp_logo\"\n"
 		" *\n"
 		" * DO NOT EDIT\n"
 		" *\n"
 		" */\n\n\n"
-		"#ifndef __BMP_LOGO_H__\n"
-		"#define __BMP_LOGO_H__\n\n"
-		"#define BMP_LOGO_WIDTH\t\t%d\n"
-		"#define BMP_LOGO_HEIGHT\t\t%d\n"
-		"#define BMP_LOGO_COLORS\t\t%d\n"
-		"#define BMP_LOGO_OFFSET\t\t%d\n"
-		"\n",
-		b->width, b->height, n_colors,
-		DEFAULT_CMAP_SIZE);
+		"#ifndef __BMP_LOGO_DATA_H__\n"
+		"#define __BMP_LOGO_DATA_H__\n\n");
 
 	/* allocate memory */
 	if ((b->data = (uint8_t *)malloc(b->width * b->height)) == NULL)
 		error ("Error allocating memory for file", fp);
 
 	/* read and print the palette information */
-	printf ("unsigned short bmp_logo_palette[] = {\n");
+	printf("unsigned short bmp_logo_palette[] = {\n");
 
 	for (i=0; i<n_colors; ++i) {
 		b->palette[(int)(i*3+2)] = fgetc(fp);
@@ -137,14 +176,13 @@ int main (int argc, char *argv[])
 	printf ("\n");
 	printf ("};\n");
 	printf ("\n");
-	printf ("unsigned char bmp_logo_bitmap[] = {\n");
+	printf("unsigned char bmp_logo_bitmap[] = {\n");
 	for (i=(b->height-1)*b->width; i>=0; i-=b->width) {
 		for (x = 0; x < b->width; x++) {
 			b->data[(uint16_t) i + x] = (uint8_t) fgetc (fp) \
 						+ DEFAULT_CMAP_SIZE;
 		}
 	}
-	fclose (fp);
 
 	for (i=0; i<(b->height*b->width); ++i) {
 		if ((i%8) == 0)
@@ -156,8 +194,10 @@ int main (int argc, char *argv[])
 	}
 	printf ("\n"
 		"};\n\n"
-		"#endif /* __BMP_LOGO_H__ */\n"
+		"#endif /* __BMP_LOGO_DATA_H__ */\n"
 	);
 
-	return (0);
+out:
+	fclose(fp);
+	return 0;
 }