1 /* 2 * (C) Copyright 2002 3 * Detlev Zundel, DENX Software Engineering, dzu@denx.de. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 /* 9 * BMP handling routines 10 */ 11 12 #include <common.h> 13 #include <dm.h> 14 #include <lcd.h> 15 #include <mapmem.h> 16 #include <bmp_layout.h> 17 #include <command.h> 18 #include <asm/byteorder.h> 19 #include <malloc.h> 20 #include <mapmem.h> 21 #include <splash.h> 22 #include <video.h> 23 24 static int bmp_info (ulong addr); 25 26 /* 27 * Allocate and decompress a BMP image using gunzip(). 28 * 29 * Returns a pointer to the decompressed image data. This pointer is 30 * aligned to 32-bit-aligned-address + 2. 31 * See doc/README.displaying-bmps for explanation. 32 * 33 * The allocation address is passed to 'alloc_addr' and must be freed 34 * by the caller after use. 35 * 36 * Returns NULL if decompression failed, or if the decompressed data 37 * didn't contain a valid BMP signature. 38 */ 39 #ifdef CONFIG_VIDEO_BMP_GZIP 40 struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp, 41 void **alloc_addr) 42 { 43 void *dst; 44 unsigned long len; 45 struct bmp_image *bmp; 46 47 /* 48 * Decompress bmp image 49 */ 50 len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE; 51 /* allocate extra 3 bytes for 32-bit-aligned-address + 2 alignment */ 52 dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE + 3); 53 if (dst == NULL) { 54 puts("Error: malloc in gunzip failed!\n"); 55 return NULL; 56 } 57 58 bmp = dst; 59 60 /* align to 32-bit-aligned-address + 2 */ 61 bmp = (struct bmp_image *)((((unsigned int)dst + 1) & ~3) + 2); 62 63 if (gunzip(bmp, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, map_sysmem(addr, 0), 64 &len) != 0) { 65 free(dst); 66 return NULL; 67 } 68 if (len == CONFIG_SYS_VIDEO_LOGO_MAX_SIZE) 69 puts("Image could be truncated" 70 " (increase CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)!\n"); 71 72 /* 73 * Check for bmp mark 'BM' 74 */ 75 if (!((bmp->header.signature[0] == 'B') && 76 (bmp->header.signature[1] == 'M'))) { 77 free(dst); 78 return NULL; 79 } 80 81 debug("Gzipped BMP image detected!\n"); 82 83 *alloc_addr = dst; 84 return bmp; 85 } 86 #else 87 struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp, 88 void **alloc_addr) 89 { 90 return NULL; 91 } 92 #endif 93 94 static int do_bmp_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) 95 { 96 ulong addr; 97 98 switch (argc) { 99 case 1: /* use load_addr as default address */ 100 addr = load_addr; 101 break; 102 case 2: /* use argument */ 103 addr = simple_strtoul(argv[1], NULL, 16); 104 break; 105 default: 106 return CMD_RET_USAGE; 107 } 108 109 return (bmp_info(addr)); 110 } 111 112 static int do_bmp_display(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) 113 { 114 ulong addr; 115 int x = 0, y = 0; 116 117 splash_get_pos(&x, &y); 118 119 switch (argc) { 120 case 1: /* use load_addr as default address */ 121 addr = load_addr; 122 break; 123 case 2: /* use argument */ 124 addr = simple_strtoul(argv[1], NULL, 16); 125 break; 126 case 4: 127 addr = simple_strtoul(argv[1], NULL, 16); 128 x = simple_strtoul(argv[2], NULL, 10); 129 y = simple_strtoul(argv[3], NULL, 10); 130 break; 131 default: 132 return CMD_RET_USAGE; 133 } 134 135 return (bmp_display(addr, x, y)); 136 } 137 138 static cmd_tbl_t cmd_bmp_sub[] = { 139 U_BOOT_CMD_MKENT(info, 3, 0, do_bmp_info, "", ""), 140 U_BOOT_CMD_MKENT(display, 5, 0, do_bmp_display, "", ""), 141 }; 142 143 #ifdef CONFIG_NEEDS_MANUAL_RELOC 144 void bmp_reloc(void) { 145 fixup_cmdtable(cmd_bmp_sub, ARRAY_SIZE(cmd_bmp_sub)); 146 } 147 #endif 148 149 /* 150 * Subroutine: do_bmp 151 * 152 * Description: Handler for 'bmp' command.. 153 * 154 * Inputs: argv[1] contains the subcommand 155 * 156 * Return: None 157 * 158 */ 159 static int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 160 { 161 cmd_tbl_t *c; 162 163 /* Strip off leading 'bmp' command argument */ 164 argc--; 165 argv++; 166 167 c = find_cmd_tbl(argv[0], &cmd_bmp_sub[0], ARRAY_SIZE(cmd_bmp_sub)); 168 169 if (c) 170 return c->cmd(cmdtp, flag, argc, argv); 171 else 172 return CMD_RET_USAGE; 173 } 174 175 U_BOOT_CMD( 176 bmp, 5, 1, do_bmp, 177 "manipulate BMP image data", 178 "info <imageAddr> - display image info\n" 179 "bmp display <imageAddr> [x y] - display image at x,y" 180 ); 181 182 /* 183 * Subroutine: bmp_info 184 * 185 * Description: Show information about bmp file in memory 186 * 187 * Inputs: addr address of the bmp file 188 * 189 * Return: None 190 * 191 */ 192 static int bmp_info(ulong addr) 193 { 194 struct bmp_image *bmp = (struct bmp_image *)map_sysmem(addr, 0); 195 void *bmp_alloc_addr = NULL; 196 unsigned long len; 197 198 if (!((bmp->header.signature[0]=='B') && 199 (bmp->header.signature[1]=='M'))) 200 bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr); 201 202 if (bmp == NULL) { 203 printf("There is no valid bmp file at the given address\n"); 204 return 1; 205 } 206 207 printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width), 208 le32_to_cpu(bmp->header.height)); 209 printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count)); 210 printf("Compression : %d\n", le32_to_cpu(bmp->header.compression)); 211 212 if (bmp_alloc_addr) 213 free(bmp_alloc_addr); 214 215 return(0); 216 } 217 218 /* 219 * Subroutine: bmp_display 220 * 221 * Description: Display bmp file located in memory 222 * 223 * Inputs: addr address of the bmp file 224 * 225 * Return: None 226 * 227 */ 228 int bmp_display(ulong addr, int x, int y) 229 { 230 #ifdef CONFIG_DM_VIDEO 231 struct udevice *dev; 232 #endif 233 int ret; 234 struct bmp_image *bmp = map_sysmem(addr, 0); 235 void *bmp_alloc_addr = NULL; 236 unsigned long len; 237 238 if (!((bmp->header.signature[0]=='B') && 239 (bmp->header.signature[1]=='M'))) 240 bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr); 241 242 if (!bmp) { 243 printf("There is no valid bmp file at the given address\n"); 244 return 1; 245 } 246 addr = map_to_sysmem(bmp); 247 248 #ifdef CONFIG_DM_VIDEO 249 ret = uclass_first_device(UCLASS_VIDEO, &dev); 250 if (!ret) { 251 if (!dev) 252 ret = -ENODEV; 253 if (!ret) { 254 bool align = false; 255 256 # ifdef CONFIG_SPLASH_SCREEN_ALIGN 257 align = true; 258 # endif /* CONFIG_SPLASH_SCREEN_ALIGN */ 259 ret = video_bmp_display(dev, addr, x, y, align); 260 } 261 } 262 #elif defined(CONFIG_LCD) 263 ret = lcd_display_bitmap(addr, x, y); 264 #elif defined(CONFIG_VIDEO) 265 ret = video_display_bitmap(addr, x, y); 266 #else 267 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO 268 #endif 269 270 if (bmp_alloc_addr) 271 free(bmp_alloc_addr); 272 273 return ret ? CMD_RET_FAILURE : 0; 274 } 275