Fix gzip bmp support (test if malloc fails, warning when truncated).

Increase CFG_VIDEO_LOGO_MAX_SIZE on HH405 board.
Patch by Stefan Roese, 08 Oct 2005

CHANGELOG

@@ -2,6 +2,10 @@
 Changes for U-Boot 1.1.4:
 ======================================================================
 
+* Fix gzip bmp support (test if malloc fails, warning when truncated).
+  Increase CFG_VIDEO_LOGO_MAX_SIZE on HH405 board.
+  Patch by Stefan Roese, 07 Oct 2005
+
 * Fix booting from serial dataflash on AT91RM9200
   Patch by Peter Menzebach, 29 Aug 2005
 

board/esd/common/lcd.c

@@ -81,7 +81,7 @@ void lcd_bmp(uchar *logo_bmp)
 	uchar *ptr;
 	ushort *ptr2;
 	ushort val;
-	unsigned char *dst;
+	unsigned char *dst = NULL;
 	int x, y;
 	int width, height, bpp, colors, line_size;
 	int header_size;
@@ -89,7 +89,6 @@ void lcd_bmp(uchar *logo_bmp)
 	unsigned char r, g, b;
 	BITMAPINFOHEADER *bm_info;
 	ulong len;
-	int do_free = 0;
 
 	/*
 	 * Check for bmp mark 'BM'
@@ -99,12 +98,18 @@ void lcd_bmp(uchar *logo_bmp)
 		/*
 		 * Decompress bmp image
 		 */
-		len = CFG_LCD_LOGO_MAX_SIZE;
-		dst = malloc(CFG_LCD_LOGO_MAX_SIZE);
-		do_free = 1;
-		if (gunzip(dst, CFG_LCD_LOGO_MAX_SIZE, (uchar *)logo_bmp, &len) != 0) {
+		len = CFG_VIDEO_LOGO_MAX_SIZE;
+		dst = malloc(CFG_VIDEO_LOGO_MAX_SIZE);
+		if (dst == NULL) {
+			printf("Error: malloc in gunzip failed!\n");
 			return;
 		}
+		if (gunzip(dst, CFG_VIDEO_LOGO_MAX_SIZE, (uchar *)logo_bmp, &len) != 0) {
+			return;
+		}
+		if (len == CFG_VIDEO_LOGO_MAX_SIZE) {
+			printf("Image could be truncated (increase CFG_VIDEO_LOGO_MAX_SIZE)!\n");
+		}
 
 		/*
 		 * Check for bmp mark 'BM'
@@ -147,7 +152,9 @@ void lcd_bmp(uchar *logo_bmp)
 		break;
 	default:
 		printf("LCD: Unknown bpp (%d) im image!\n", bpp);
-		free(dst);
+		if ((dst != NULL) && (dst != (uchar *)logo_bmp)) {
+			free(dst);
+		}
 		return;
 	}
 	printf(" (%d*%d, %dbpp)\n", width, height, bpp);
@@ -205,7 +212,7 @@ void lcd_bmp(uchar *logo_bmp)
 		}
 	}
 
-	if (do_free) {
+	if ((dst != NULL) && (dst != (uchar *)logo_bmp)) {
 		free(dst);
 	}
 }

common/cmd_bmp.c

@@ -29,12 +29,15 @@
 #include <bmp_layout.h>
 #include <command.h>
 #include <asm/byteorder.h>
+#include <malloc.h>
 
 #if (CONFIG_COMMANDS & CFG_CMD_BMP)
 
 static int bmp_info (ulong addr);
 static int bmp_display (ulong addr, int x, int y);
 
+int gunzip(void *, int, unsigned char *, unsigned long *);
+
 /*
  * Subroutine:  do_bmp
  *
@@ -100,15 +103,64 @@ U_BOOT_CMD(
 static int bmp_info(ulong addr)
 {
 	bmp_image_t *bmp=(bmp_image_t *)addr;
+#ifdef CONFIG_VIDEO_BMP_GZIP
+	unsigned char *dst = NULL;
+	ulong len;
+#endif /* CONFIG_VIDEO_BMP_GZIP */
+
 	if (!((bmp->header.signature[0]=='B') &&
 	      (bmp->header.signature[1]=='M'))) {
+
+#ifdef CONFIG_VIDEO_BMP_GZIP
+		/*
+		 * Decompress bmp image
+		 */
+		len = CFG_VIDEO_LOGO_MAX_SIZE;
+		dst = malloc(CFG_VIDEO_LOGO_MAX_SIZE);
+		if (dst == NULL) {
+			printf("Error: malloc in gunzip failed!\n");
+			return(1);
+		}
+		if (gunzip(dst, CFG_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
+			printf("There is no valid bmp file at the given address\n");
+			return(1);
+		}
+		if (len == CFG_VIDEO_LOGO_MAX_SIZE) {
+			printf("Image could be truncated (increase CFG_VIDEO_LOGO_MAX_SIZE)!\n");
+		}
+
+		/*
+		 * Set addr to decompressed image
+		 */
+		bmp = (bmp_image_t *)dst;
+
+		/*
+		 * Check for bmp mark 'BM'
+		 */
+		if (!((bmp->header.signature[0] == 'B') &&
+		      (bmp->header.signature[1] == 'M'))) {
+			printf("There is no valid bmp file at the given address\n");
+			free(dst);
+			return(1);
+		}
+
+		printf("Gzipped BMP image detected!\n");
+#else /* CONFIG_VIDEO_BMP_GZIP */
 		printf("There is no valid bmp file at the given address\n");
 		return(1);
+#endif /* CONFIG_VIDEO_BMP_GZIP */
 	}
 	printf("Image size    : %d x %d\n", le32_to_cpu(bmp->header.width),
 	       le32_to_cpu(bmp->header.height));
 	printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
 	printf("Compression   : %d\n", le32_to_cpu(bmp->header.compression));
+
+#ifdef CONFIG_VIDEO_BMP_GZIP
+	if (dst) {
+		free(dst);
+	}
+#endif /* CONFIG_VIDEO_BMP_GZIP */
+
 	return(0);
 }
 

drivers/cfb_console.c

@@ -779,11 +779,18 @@ int video_display_bitmap (ulong bmp_image, int x, int y)
 		 */
 		len = CFG_VIDEO_LOGO_MAX_SIZE;
 		dst = malloc(CFG_VIDEO_LOGO_MAX_SIZE);
+		if (dst == NULL) {
+			printf("Error: malloc in gunzip failed!\n");
+			return(1);
+		}
 		if (gunzip(dst, CFG_VIDEO_LOGO_MAX_SIZE, (uchar *)bmp_image, &len) != 0) {
 			printf ("Error: no valid bmp or bmp.gz image at %lx\n", bmp_image);
 			free(dst);
 			return 1;
 		}
+		if (len == CFG_VIDEO_LOGO_MAX_SIZE) {
+			printf("Image could be truncated (increase CFG_VIDEO_LOGO_MAX_SIZE)!\n");
+		}
 
 		/*
 		 * Set addr to decompressed image

include/configs/APC405.h

@@ -357,7 +357,7 @@
 #define CFG_LCD_MEM             CFG_LCD_BIG_MEM
 #define CFG_LCD_REG             CFG_LCD_BIG_REG
 
-#define CFG_LCD_LOGO_MAX_SIZE   (1024*1024)
+#define CFG_VIDEO_LOGO_MAX_SIZE (1 << 20)
 
 /*-----------------------------------------------------------------------
  * Definitions for initial stack pointer and data area (in data cache)

include/configs/HH405.h

@@ -88,7 +88,7 @@
 #define CFG_CONSOLE_IS_IN_ENV
 #define CONFIG_SPLASH_SCREEN
 #define CONFIG_VIDEO_BMP_GZIP		/* gzip compressed bmp images	*/
-#define CFG_VIDEO_LOGO_MAX_SIZE	(1024*1024)	/* for decompressed img */
+#define CFG_VIDEO_LOGO_MAX_SIZE	(2 << 20)	/* for decompressed img */
 
 #define ADD_BMP_CMD		CFG_CMD_BMP
 #else
@@ -308,7 +308,7 @@
 #define CFG_FLASH_BASE		0xFFF80000
 #define CFG_MONITOR_BASE	TEXT_BASE
 #define CFG_MONITOR_LEN		(512 * 1024)	/* Reserve 512 kB for Monitor	*/
-#define CFG_MALLOC_LEN		(2 * 1024*1024)	/* Reserve 2 MB for malloc()	*/
+#define CFG_MALLOC_LEN		(4 << 20)	/* Reserve 4 MB for malloc()	*/
 
 #if (CFG_MONITOR_BASE < FLASH_BASE0_PRELIM)
 # define CFG_RAMBOOT		1
@@ -409,8 +409,6 @@
 #define CFG_LCD_SMALL_MEM       0xF1400000  /* Epson S1D13704 Mem Base Address  */
 #define CFG_LCD_SMALL_REG       0xF140FFE0  /* Epson S1D13704 Reg Base Address  */
 
-#define CFG_LCD_LOGO_MAX_SIZE   (1024*1024)
-
 /*-----------------------------------------------------------------------
  * Universal Interrupt Controller (UIC) Setup
  */

include/configs/VOH405.h

@@ -362,7 +362,7 @@
 #define CFG_LCD_SMALL_MEM       0xF1400000  /* Epson S1D13704 Mem Base Address  */
 #define CFG_LCD_SMALL_REG       0xF140FFE0  /* Epson S1D13704 Reg Base Address  */
 
-#define CFG_LCD_LOGO_MAX_SIZE   (1024*1024)
+#define CFG_VIDEO_LOGO_MAX_SIZE (1 << 20)
 
 /*-----------------------------------------------------------------------
  * FPGA stuff