cmd/bmp.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2002
   4  * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
   5  */
   6
   7 /*
   8  * BMP handling routines
   9  */
  10
  11 #include <common.h>
  12 #include <bmp_layout.h>
  13 #include <command.h>
  14 #include <dm.h>
  15 #include <gzip.h>
  16 #include <lcd.h>
  17 #include <malloc.h>
  18 #include <mapmem.h>
  19 #include <splash.h>
  20 #include <video.h>
  21 #include <asm/byteorder.h>
  22
  23 static int bmp_info (ulong addr);
  24
  25 /*
  26  * Allocate and decompress a BMP image using gunzip().
  27  *
  28  * Returns a pointer to the decompressed image data. This pointer is
  29  * aligned to 32-bit-aligned-address + 2.
  30  * See doc/README.displaying-bmps for explanation.
  31  *
  32  * The allocation address is passed to 'alloc_addr' and must be freed
  33  * by the caller after use.
  34  *
  35  * Returns NULL if decompression failed, or if the decompressed data
  36  * didn't contain a valid BMP signature.
  37  */
  38 #ifdef CONFIG_VIDEO_BMP_GZIP
  39 struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
  40                              void **alloc_addr)
  41 {
  42         void *dst;
  43         unsigned long len;
  44         struct bmp_image *bmp;
  45
  46         /*
  47          * Decompress bmp image
  48          */
  49         len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE;
  50         /* allocate extra 3 bytes for 32-bit-aligned-address + 2 alignment */
  51         dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE + 3);
  52         if (dst == NULL) {
  53                 puts("Error: malloc in gunzip failed!\n");
  54                 return NULL;
  55         }
  56
  57         bmp = dst;
  58
  59         /* align to 32-bit-aligned-address + 2 */
  60         bmp = (struct bmp_image *)((((uintptr_t)dst + 1) & ~3) + 2);
  61
  62         if (gunzip(bmp, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, map_sysmem(addr, 0),
  63                    &len) != 0) {
  64                 free(dst);
  65                 return NULL;
  66         }
  67         if (len == CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)
  68                 puts("Image could be truncated"
  69                                 " (increase CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)!\n");
  70
  71         /*
  72          * Check for bmp mark 'BM'
  73          */
  74         if (!((bmp->header.signature[0] == 'B') &&
  75               (bmp->header.signature[1] == 'M'))) {
  76                 free(dst);
  77                 return NULL;
  78         }
  79
  80         debug("Gzipped BMP image detected!\n");
  81
  82         *alloc_addr = dst;
  83         return bmp;
  84 }
  85 #else
  86 struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
  87                              void **alloc_addr)
  88 {
  89         return NULL;
  90 }
  91 #endif
  92
  93 static int do_bmp_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
  94 {
  95         ulong addr;
  96
  97         switch (argc) {
  98         case 1:         /* use load_addr as default address */
  99                 addr = load_addr;
 100                 break;
 101         case 2:         /* use argument */
 102                 addr = simple_strtoul(argv[1], NULL, 16);
 103                 break;
 104         default:
 105                 return CMD_RET_USAGE;
 106         }
 107
 108         return (bmp_info(addr));
 109 }
 110
 111 static int do_bmp_display(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 112 {
 113         ulong addr;
 114         int x = 0, y = 0;
 115
 116         splash_get_pos(&x, &y);
 117
 118         switch (argc) {
 119         case 1:         /* use load_addr as default address */
 120                 addr = load_addr;
 121                 break;
 122         case 2:         /* use argument */
 123                 addr = simple_strtoul(argv[1], NULL, 16);
 124                 break;
 125         case 4:
 126                 addr = simple_strtoul(argv[1], NULL, 16);
 127                 if (!strcmp(argv[2], "m"))
 128                         x = BMP_ALIGN_CENTER;
 129                 else
 130                         x = simple_strtoul(argv[2], NULL, 10);
 131                 if (!strcmp(argv[3], "m"))
 132                         y = BMP_ALIGN_CENTER;
 133                 else
 134                         y = simple_strtoul(argv[3], NULL, 10);
 135                 break;
 136         default:
 137                 return CMD_RET_USAGE;
 138         }
 139
 140          return (bmp_display(addr, x, y));
 141 }
 142
 143 static cmd_tbl_t cmd_bmp_sub[] = {
 144         U_BOOT_CMD_MKENT(info, 3, 0, do_bmp_info, "", ""),
 145         U_BOOT_CMD_MKENT(display, 5, 0, do_bmp_display, "", ""),
 146 };
 147
 148 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 149 void bmp_reloc(void) {
 150         fixup_cmdtable(cmd_bmp_sub, ARRAY_SIZE(cmd_bmp_sub));
 151 }
 152 #endif
 153
 154 /*
 155  * Subroutine:  do_bmp
 156  *
 157  * Description: Handler for 'bmp' command..
 158  *
 159  * Inputs:      argv[1] contains the subcommand
 160  *
 161  * Return:      None
 162  *
 163  */
 164 static int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 165 {
 166         cmd_tbl_t *c;
 167
 168         /* Strip off leading 'bmp' command argument */
 169         argc--;
 170         argv++;
 171
 172         c = find_cmd_tbl(argv[0], &cmd_bmp_sub[0], ARRAY_SIZE(cmd_bmp_sub));
 173
 174         if (c)
 175                 return  c->cmd(cmdtp, flag, argc, argv);
 176         else
 177                 return CMD_RET_USAGE;
 178 }
 179
 180 U_BOOT_CMD(
 181         bmp,    5,      1,      do_bmp,
 182         "manipulate BMP image data",
 183         "info <imageAddr>          - display image info\n"
 184         "bmp display <imageAddr> [x y] - display image at x,y"
 185 );
 186
 187 /*
 188  * Subroutine:  bmp_info
 189  *
 190  * Description: Show information about bmp file in memory
 191  *
 192  * Inputs:      addr            address of the bmp file
 193  *
 194  * Return:      None
 195  *
 196  */
 197 static int bmp_info(ulong addr)
 198 {
 199         struct bmp_image *bmp = (struct bmp_image *)map_sysmem(addr, 0);
 200         void *bmp_alloc_addr = NULL;
 201         unsigned long len;
 202
 203         if (!((bmp->header.signature[0]=='B') &&
 204               (bmp->header.signature[1]=='M')))
 205                 bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
 206
 207         if (bmp == NULL) {
 208                 printf("There is no valid bmp file at the given address\n");
 209                 return 1;
 210         }
 211
 212         printf("Image size    : %d x %d\n", le32_to_cpu(bmp->header.width),
 213                le32_to_cpu(bmp->header.height));
 214         printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
 215         printf("Compression   : %d\n", le32_to_cpu(bmp->header.compression));
 216
 217         if (bmp_alloc_addr)
 218                 free(bmp_alloc_addr);
 219
 220         return(0);
 221 }
 222
 223 /*
 224  * Subroutine:  bmp_display
 225  *
 226  * Description: Display bmp file located in memory
 227  *
 228  * Inputs:      addr            address of the bmp file
 229  *
 230  * Return:      None
 231  *
 232  */
 233 int bmp_display(ulong addr, int x, int y)
 234 {
 235 #ifdef CONFIG_DM_VIDEO
 236         struct udevice *dev;
 237 #endif
 238         int ret;
 239         struct bmp_image *bmp = map_sysmem(addr, 0);
 240         void *bmp_alloc_addr = NULL;
 241         unsigned long len;
 242
 243         if (!((bmp->header.signature[0]=='B') &&
 244               (bmp->header.signature[1]=='M')))
 245                 bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
 246
 247         if (!bmp) {
 248                 printf("There is no valid bmp file at the given address\n");
 249                 return 1;
 250         }
 251         addr = map_to_sysmem(bmp);
 252
 253 #ifdef CONFIG_DM_VIDEO
 254         ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
 255         if (!ret) {
 256                 bool align = false;
 257
 258                 if (CONFIG_IS_ENABLED(SPLASH_SCREEN_ALIGN) ||
 259                     x == BMP_ALIGN_CENTER ||
 260                     y == BMP_ALIGN_CENTER)
 261                         align = true;
 262
 263                 ret = video_bmp_display(dev, addr, x, y, align);
 264         }
 265 #elif defined(CONFIG_LCD)
 266         ret = lcd_display_bitmap(addr, x, y);
 267 #elif defined(CONFIG_VIDEO)
 268         ret = video_display_bitmap(addr, x, y);
 269 #else
 270 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
 271 #endif
 272
 273         if (bmp_alloc_addr)
 274                 free(bmp_alloc_addr);
 275
 276         return ret ? CMD_RET_FAILURE : 0;
 277 }