diff options
Diffstat (limited to 'common/cmd_bmp.c')
| -rw-r--r-- | common/cmd_bmp.c | 45 |
1 files changed, 31 insertions, 14 deletions
diff --git a/common/cmd_bmp.c b/common/cmd_bmp.c index 5a52edde3..a7c5fbd26 100644 --- a/common/cmd_bmp.c +++ b/common/cmd_bmp.c @@ -31,6 +31,7 @@ #include <command.h> #include <asm/byteorder.h> #include <malloc.h> +#include <splash.h> #include <video.h> static int bmp_info (ulong addr); @@ -38,14 +39,19 @@ static int bmp_info (ulong addr); /* * Allocate and decompress a BMP image using gunzip(). * - * Returns a pointer to the decompressed image data. Must be freed by - * the caller after use. + * Returns a pointer to the decompressed image data. This pointer is + * aligned to 32-bit-aligned-address + 2. + * See doc/README.displaying-bmps for explanation. + * + * The allocation address is passed to 'alloc_addr' and must be freed + * by the caller after use. * * Returns NULL if decompression failed, or if the decompressed data * didn't contain a valid BMP signature. */ #ifdef CONFIG_VIDEO_BMP_GZIP -bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp) +bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp, + void **alloc_addr) { void *dst; unsigned long len; @@ -55,12 +61,19 @@ bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp) * Decompress bmp image */ len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE; - dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE); + /* allocate extra 3 bytes for 32-bit-aligned-address + 2 alignment */ + dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE + 3); if (dst == NULL) { puts("Error: malloc in gunzip failed!\n"); return NULL; } - if (gunzip(dst, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) { + + bmp = dst; + + /* align to 32-bit-aligned-address + 2 */ + bmp = (bmp_image_t *)((((unsigned int)dst + 1) & ~3) + 2); + + if (gunzip(bmp, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) { free(dst); return NULL; } @@ -68,8 +81,6 @@ bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp) puts("Image could be truncated" " (increase CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)!\n"); - bmp = dst; - /* * Check for bmp mark 'BM' */ @@ -81,10 +92,12 @@ bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp) debug("Gzipped BMP image detected!\n"); + *alloc_addr = dst; return bmp; } #else -bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp) +bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp, + void **alloc_addr) { return NULL; } @@ -113,6 +126,8 @@ static int do_bmp_display(cmd_tbl_t * cmdtp, int flag, int argc, char * const ar ulong addr; int x = 0, y = 0; + splash_get_pos(&x, &y); + switch (argc) { case 1: /* use load_addr as default address */ addr = load_addr; @@ -189,11 +204,12 @@ U_BOOT_CMD( static int bmp_info(ulong addr) { bmp_image_t *bmp=(bmp_image_t *)addr; + void *bmp_alloc_addr = NULL; unsigned long len; if (!((bmp->header.signature[0]=='B') && (bmp->header.signature[1]=='M'))) - bmp = gunzip_bmp(addr, &len); + bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr); if (bmp == NULL) { printf("There is no valid bmp file at the given address\n"); @@ -205,8 +221,8 @@ static int bmp_info(ulong addr) printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count)); printf("Compression : %d\n", le32_to_cpu(bmp->header.compression)); - if ((unsigned long)bmp != addr) - free(bmp); + if (bmp_alloc_addr) + free(bmp_alloc_addr); return(0); } @@ -225,11 +241,12 @@ int bmp_display(ulong addr, int x, int y) { int ret; bmp_image_t *bmp = (bmp_image_t *)addr; + void *bmp_alloc_addr = NULL; unsigned long len; if (!((bmp->header.signature[0]=='B') && (bmp->header.signature[1]=='M'))) - bmp = gunzip_bmp(addr, &len); + bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr); if (!bmp) { printf("There is no valid bmp file at the given address\n"); @@ -244,8 +261,8 @@ int bmp_display(ulong addr, int x, int y) # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO #endif - if ((unsigned long)bmp != addr) - free(bmp); + if (bmp_alloc_addr) + free(bmp_alloc_addr); return ret; } |