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[u-boot] / common / lcd.c
1 /*
2  * Common LCD routines for supported CPUs
3  *
4  * (C) Copyright 2001-2002
5  * Wolfgang Denk, DENX Software Engineering -- wd@denx.de
6  *
7  * SPDX-License-Identifier:     GPL-2.0+
8  */
9
10 /************************************************************************/
11 /* ** HEADER FILES                                                      */
12 /************************************************************************/
13
14 /* #define DEBUG */
15
16 #include <config.h>
17 #include <common.h>
18 #include <command.h>
19 #include <stdarg.h>
20 #include <search.h>
21 #include <env_callback.h>
22 #include <linux/types.h>
23 #include <stdio_dev.h>
24 #if defined(CONFIG_POST)
25 #include <post.h>
26 #endif
27 #include <lcd.h>
28 #include <watchdog.h>
29 #include <asm/unaligned.h>
30 #include <splash.h>
31 #include <asm/io.h>
32 #include <asm/unaligned.h>
33 #include <fdt_support.h>
34
35 #if defined(CONFIG_CPU_PXA25X) || defined(CONFIG_CPU_PXA27X) || \
36         defined(CONFIG_CPU_MONAHANS)
37 #include <asm/byteorder.h>
38 #endif
39
40 #if defined(CONFIG_MPC823)
41 #include <lcdvideo.h>
42 #endif
43
44 #if defined(CONFIG_ATMEL_LCD)
45 #include <atmel_lcdc.h>
46 #endif
47
48 #if defined(CONFIG_LCD_DT_SIMPLEFB)
49 #include <libfdt.h>
50 #endif
51
52 /************************************************************************/
53 /* ** FONT DATA                                                         */
54 /************************************************************************/
55 #include <video_font.h>         /* Get font data, width and height      */
56
57 /************************************************************************/
58 /* ** LOGO DATA                                                         */
59 /************************************************************************/
60 #ifdef CONFIG_LCD_LOGO
61 # include <bmp_logo.h>          /* Get logo data, width and height      */
62 # include <bmp_logo_data.h>
63 # if (CONSOLE_COLOR_WHITE >= BMP_LOGO_OFFSET) && (LCD_BPP != LCD_COLOR16)
64 #  error Default Color Map overlaps with Logo Color Map
65 # endif
66 #endif
67
68 #ifdef CONFIG_SANDBOX
69 #include <asm/sdl.h>
70 #endif
71
72 #ifndef CONFIG_LCD_ALIGNMENT
73 #define CONFIG_LCD_ALIGNMENT PAGE_SIZE
74 #endif
75
76 #if (LCD_BPP != LCD_COLOR8) && (LCD_BPP != LCD_COLOR16) && \
77         (LCD_BPP != LCD_COLOR32)
78 # error Unsupported LCD BPP.
79 #endif
80
81 DECLARE_GLOBAL_DATA_PTR;
82
83 static int lcd_init(void *lcdbase);
84
85 static void *lcd_logo(void);
86
87 static void lcd_setfgcolor(int color);
88 static void lcd_setbgcolor(int color);
89
90 static int lcd_color_fg;
91 static int lcd_color_bg;
92 int lcd_line_length;
93
94 char lcd_is_enabled = 0;
95
96 static void *lcd_base;                  /* Start of framebuffer memory  */
97
98 static char lcd_flush_dcache;   /* 1 to flush dcache after each lcd update */
99
100 /************************************************************************/
101
102 /* Flush LCD activity to the caches */
103 void lcd_sync(void)
104 {
105         /*
106          * flush_dcache_range() is declared in common.h but it seems that some
107          * architectures do not actually implement it. Is there a way to find
108          * out whether it exists? For now, ARM is safe.
109          */
110 #if defined(CONFIG_ARM) && !defined(CONFIG_SYS_DCACHE_OFF)
111         int line_length;
112
113         if (lcd_flush_dcache)
114                 flush_dcache_range((u32)lcd_base,
115                         (u32)(lcd_base + lcd_get_size(&line_length)));
116 #elif defined(CONFIG_SANDBOX) && defined(CONFIG_VIDEO_SANDBOX_SDL)
117         static ulong last_sync;
118
119         if (get_timer(last_sync) > 10) {
120                 sandbox_sdl_sync(lcd_base);
121                 last_sync = get_timer(0);
122         }
123 #endif
124 }
125
126 void lcd_set_flush_dcache(int flush)
127 {
128         lcd_flush_dcache = (flush != 0);
129 }
130
131 /*----------------------------------------------------------------------*/
132
133 static void lcd_stub_putc(struct stdio_dev *dev, const char c)
134 {
135         lcd_putc(c);
136 }
137
138 static void lcd_stub_puts(struct stdio_dev *dev, const char *s)
139 {
140         lcd_puts(s);
141 }
142
143 /************************************************************************/
144 /**  Small utility to check that you got the colours right              */
145 /************************************************************************/
146 #ifdef LCD_TEST_PATTERN
147
148 #define N_BLK_VERT      2
149 #define N_BLK_HOR       3
150
151 static int test_colors[N_BLK_HOR * N_BLK_VERT] = {
152         CONSOLE_COLOR_RED,      CONSOLE_COLOR_GREEN,    CONSOLE_COLOR_YELLOW,
153         CONSOLE_COLOR_BLUE,     CONSOLE_COLOR_MAGENTA,  CONSOLE_COLOR_CYAN,
154 };
155
156 static void test_pattern(void)
157 {
158         ushort v_max  = panel_info.vl_row;
159         ushort h_max  = panel_info.vl_col;
160         ushort v_step = (v_max + N_BLK_VERT - 1) / N_BLK_VERT;
161         ushort h_step = (h_max + N_BLK_HOR  - 1) / N_BLK_HOR;
162         ushort v, h;
163         uchar *pix = (uchar *)lcd_base;
164
165         printf("[LCD] Test Pattern: %d x %d [%d x %d]\n",
166                 h_max, v_max, h_step, v_step);
167
168         /* WARNING: Code silently assumes 8bit/pixel */
169         for (v = 0; v < v_max; ++v) {
170                 uchar iy = v / v_step;
171                 for (h = 0; h < h_max; ++h) {
172                         uchar ix = N_BLK_HOR * iy + h / h_step;
173                         *pix++ = test_colors[ix];
174                 }
175         }
176 }
177 #endif /* LCD_TEST_PATTERN */
178
179
180 /************************************************************************/
181 /* ** GENERIC Initialization Routines                                   */
182 /************************************************************************/
183 /*
184  * With most lcd drivers the line length is set up
185  * by calculating it from panel_info parameters. Some
186  * drivers need to calculate the line length differently,
187  * so make the function weak to allow overriding it.
188  */
189 __weak int lcd_get_size(int *line_length)
190 {
191         *line_length = (panel_info.vl_col * NBITS(panel_info.vl_bpix)) / 8;
192         return *line_length * panel_info.vl_row;
193 }
194
195 int drv_lcd_init(void)
196 {
197         struct stdio_dev lcddev;
198         int rc;
199
200         lcd_base = map_sysmem(gd->fb_base, 0);
201
202         lcd_init(lcd_base);             /* LCD initialization */
203
204         /* Device initialization */
205         memset(&lcddev, 0, sizeof(lcddev));
206
207         strcpy(lcddev.name, "lcd");
208         lcddev.ext   = 0;                       /* No extensions */
209         lcddev.flags = DEV_FLAGS_OUTPUT;        /* Output only */
210         lcddev.putc  = lcd_stub_putc;           /* 'putc' function */
211         lcddev.puts  = lcd_stub_puts;           /* 'puts' function */
212
213         rc = stdio_register(&lcddev);
214
215         return (rc == 0) ? 1 : rc;
216 }
217
218 /*----------------------------------------------------------------------*/
219 void lcd_clear(void)
220 {
221         short console_rows, console_cols;
222         int bg_color;
223 #if LCD_BPP == LCD_COLOR8
224         /* Setting the palette */
225         lcd_setcolreg(CONSOLE_COLOR_BLACK, 0, 0, 0);
226         lcd_setcolreg(CONSOLE_COLOR_RED, 0xFF, 0, 0);
227         lcd_setcolreg(CONSOLE_COLOR_GREEN, 0, 0xFF, 0);
228         lcd_setcolreg(CONSOLE_COLOR_YELLOW, 0xFF, 0xFF, 0);
229         lcd_setcolreg(CONSOLE_COLOR_BLUE, 0, 0, 0xFF);
230         lcd_setcolreg(CONSOLE_COLOR_MAGENTA, 0xFF, 0, 0xFF);
231         lcd_setcolreg(CONSOLE_COLOR_CYAN, 0, 0xFF, 0xFF);
232         lcd_setcolreg(CONSOLE_COLOR_GREY, 0xAA, 0xAA, 0xAA);
233         lcd_setcolreg(CONSOLE_COLOR_WHITE, 0xFF, 0xFF, 0xFF);
234 #endif
235
236 #ifndef CONFIG_SYS_WHITE_ON_BLACK
237         lcd_setfgcolor(CONSOLE_COLOR_BLACK);
238         lcd_setbgcolor(CONSOLE_COLOR_WHITE);
239         bg_color = CONSOLE_COLOR_WHITE;
240 #else
241         lcd_setfgcolor(CONSOLE_COLOR_WHITE);
242         lcd_setbgcolor(CONSOLE_COLOR_BLACK);
243         bg_color = CONSOLE_COLOR_BLACK;
244 #endif  /* CONFIG_SYS_WHITE_ON_BLACK */
245
246 #ifdef  LCD_TEST_PATTERN
247         test_pattern();
248 #else
249         /* set framebuffer to background color */
250 #if (LCD_BPP != LCD_COLOR32)
251         memset((char *)lcd_base, bg_color, lcd_line_length * panel_info.vl_row);
252 #else
253         u32 *ppix = lcd_base;
254         u32 i;
255         for (i = 0;
256            i < (lcd_line_length * panel_info.vl_row)/NBYTES(panel_info.vl_bpix);
257            i++) {
258                 *ppix++ = bg_color;
259         }
260 #endif
261 #endif
262         /* Paint the logo and retrieve LCD base address */
263         debug("[LCD] Drawing the logo...\n");
264 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
265         console_rows = (panel_info.vl_row - BMP_LOGO_HEIGHT);
266         console_rows /= VIDEO_FONT_HEIGHT;
267 #else
268         console_rows = panel_info.vl_row / VIDEO_FONT_HEIGHT;
269 #endif
270         console_cols = panel_info.vl_col / VIDEO_FONT_WIDTH;
271         lcd_init_console(lcd_logo(), console_rows, console_cols);
272         lcd_sync();
273 }
274
275 static int do_lcd_clear(cmd_tbl_t *cmdtp, int flag, int argc,
276                         char *const argv[])
277 {
278         lcd_clear();
279         return 0;
280 }
281
282 U_BOOT_CMD(
283         cls,    1,      1,      do_lcd_clear,
284         "clear screen",
285         ""
286 );
287
288 /*----------------------------------------------------------------------*/
289
290 static int lcd_init(void *lcdbase)
291 {
292         /* Initialize the lcd controller */
293         debug("[LCD] Initializing LCD frambuffer at %p\n", lcdbase);
294
295         lcd_ctrl_init(lcdbase);
296
297         /*
298          * lcd_ctrl_init() of some drivers (i.e. bcm2835 on rpi) ignores
299          * the 'lcdbase' argument and uses custom lcd base address
300          * by setting up gd->fb_base. Check for this condition and fixup
301          * 'lcd_base' address.
302          */
303         if (map_to_sysmem(lcdbase) != gd->fb_base)
304                 lcd_base = map_sysmem(gd->fb_base, 0);
305
306         debug("[LCD] Using LCD frambuffer at %p\n", lcd_base);
307
308         lcd_get_size(&lcd_line_length);
309         lcd_is_enabled = 1;
310         lcd_clear();
311         lcd_enable();
312
313         /* Initialize the console */
314         lcd_set_col(0);
315 #ifdef CONFIG_LCD_INFO_BELOW_LOGO
316         lcd_set_row(7 + BMP_LOGO_HEIGHT / VIDEO_FONT_HEIGHT);
317 #else
318         lcd_set_row(1); /* leave 1 blank line below logo */
319 #endif
320
321         return 0;
322 }
323
324
325 /************************************************************************/
326 /* ** ROM capable initialization part - needed to reserve FB memory     */
327 /************************************************************************/
328 /*
329  * This is called early in the system initialization to grab memory
330  * for the LCD controller.
331  * Returns new address for monitor, after reserving LCD buffer memory
332  *
333  * Note that this is running from ROM, so no write access to global data.
334  */
335 ulong lcd_setmem(ulong addr)
336 {
337         ulong size;
338         int line_length;
339
340         debug("LCD panel info: %d x %d, %d bit/pix\n", panel_info.vl_col,
341                 panel_info.vl_row, NBITS(panel_info.vl_bpix));
342
343         size = lcd_get_size(&line_length);
344
345         /* Round up to nearest full page, or MMU section if defined */
346         size = ALIGN(size, CONFIG_LCD_ALIGNMENT);
347         addr = ALIGN(addr - CONFIG_LCD_ALIGNMENT + 1, CONFIG_LCD_ALIGNMENT);
348
349         /* Allocate pages for the frame buffer. */
350         addr -= size;
351
352         debug("Reserving %ldk for LCD Framebuffer at: %08lx\n",
353               size >> 10, addr);
354
355         return addr;
356 }
357
358 /*----------------------------------------------------------------------*/
359
360 static void lcd_setfgcolor(int color)
361 {
362         lcd_color_fg = color;
363 }
364
365 int lcd_getfgcolor(void)
366 {
367         return lcd_color_fg;
368 }
369
370 /*----------------------------------------------------------------------*/
371
372 static void lcd_setbgcolor(int color)
373 {
374         lcd_color_bg = color;
375 }
376
377 int lcd_getbgcolor(void)
378 {
379         return lcd_color_bg;
380 }
381
382 /************************************************************************/
383 /* ** Chipset depending Bitmap / Logo stuff...                          */
384 /************************************************************************/
385 static inline ushort *configuration_get_cmap(void)
386 {
387 #if defined CONFIG_CPU_PXA
388         struct pxafb_info *fbi = &panel_info.pxa;
389         return (ushort *)fbi->palette;
390 #elif defined(CONFIG_MPC823)
391         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
392         cpm8xx_t *cp = &(immr->im_cpm);
393         return (ushort *)&(cp->lcd_cmap[255 * sizeof(ushort)]);
394 #elif defined(CONFIG_ATMEL_LCD)
395         return (ushort *)(panel_info.mmio + ATMEL_LCDC_LUT(0));
396 #elif !defined(CONFIG_ATMEL_HLCD) && !defined(CONFIG_EXYNOS_FB)
397         return panel_info.cmap;
398 #elif defined(CONFIG_LCD_LOGO)
399         return bmp_logo_palette;
400 #else
401         return NULL;
402 #endif
403 }
404
405 #ifdef CONFIG_LCD_LOGO
406 void bitmap_plot(int x, int y)
407 {
408 #ifdef CONFIG_ATMEL_LCD
409         uint *cmap = (uint *)bmp_logo_palette;
410 #else
411         ushort *cmap = (ushort *)bmp_logo_palette;
412 #endif
413         ushort i, j;
414         uchar *bmap;
415         uchar *fb;
416         ushort *fb16;
417 #if defined(CONFIG_MPC823)
418         immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
419         cpm8xx_t *cp = &(immr->im_cpm);
420 #endif
421         unsigned bpix = NBITS(panel_info.vl_bpix);
422
423         debug("Logo: width %d  height %d  colors %d  cmap %d\n",
424                 BMP_LOGO_WIDTH, BMP_LOGO_HEIGHT, BMP_LOGO_COLORS,
425                 ARRAY_SIZE(bmp_logo_palette));
426
427         bmap = &bmp_logo_bitmap[0];
428         fb   = (uchar *)(lcd_base + y * lcd_line_length + x * bpix / 8);
429
430         if (bpix < 12) {
431                 /* Leave room for default color map
432                  * default case: generic system with no cmap (most likely 16bpp)
433                  * cmap was set to the source palette, so no change is done.
434                  * This avoids even more ifdefs in the next stanza
435                  */
436 #if defined(CONFIG_MPC823)
437                 cmap = (ushort *) &(cp->lcd_cmap[BMP_LOGO_OFFSET * sizeof(ushort)]);
438 #elif defined(CONFIG_ATMEL_LCD)
439                 cmap = (uint *)configuration_get_cmap();
440 #else
441                 cmap = configuration_get_cmap();
442 #endif
443
444                 WATCHDOG_RESET();
445
446                 /* Set color map */
447                 for (i = 0; i < ARRAY_SIZE(bmp_logo_palette); ++i) {
448                         ushort colreg = bmp_logo_palette[i];
449 #ifdef CONFIG_ATMEL_LCD
450                         uint lut_entry;
451 #ifdef CONFIG_ATMEL_LCD_BGR555
452                         lut_entry = ((colreg & 0x000F) << 11) |
453                                         ((colreg & 0x00F0) <<  2) |
454                                         ((colreg & 0x0F00) >>  7);
455 #else /* CONFIG_ATMEL_LCD_RGB565 */
456                         lut_entry = ((colreg & 0x000F) << 1) |
457                                         ((colreg & 0x00F0) << 3) |
458                                         ((colreg & 0x0F00) << 4);
459 #endif
460                         *(cmap + BMP_LOGO_OFFSET) = lut_entry;
461                         cmap++;
462 #else /* !CONFIG_ATMEL_LCD */
463                         *cmap++ = colreg;
464 #endif /* CONFIG_ATMEL_LCD */
465                 }
466
467                 WATCHDOG_RESET();
468
469                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
470                         memcpy(fb, bmap, BMP_LOGO_WIDTH);
471                         bmap += BMP_LOGO_WIDTH;
472                         fb += panel_info.vl_col;
473                 }
474         }
475         else { /* true color mode */
476                 u16 col16;
477                 fb16 = (ushort *)fb;
478                 for (i = 0; i < BMP_LOGO_HEIGHT; ++i) {
479                         for (j = 0; j < BMP_LOGO_WIDTH; j++) {
480                                 col16 = bmp_logo_palette[(bmap[j]-16)];
481                                 fb16[j] =
482                                         ((col16 & 0x000F) << 1) |
483                                         ((col16 & 0x00F0) << 3) |
484                                         ((col16 & 0x0F00) << 4);
485                                 }
486                         bmap += BMP_LOGO_WIDTH;
487                         fb16 += panel_info.vl_col;
488                 }
489         }
490
491         WATCHDOG_RESET();
492         lcd_sync();
493 }
494 #else
495 static inline void bitmap_plot(int x, int y) {}
496 #endif /* CONFIG_LCD_LOGO */
497
498 /*----------------------------------------------------------------------*/
499 #if defined(CONFIG_CMD_BMP) || defined(CONFIG_SPLASH_SCREEN)
500 /*
501  * Display the BMP file located at address bmp_image.
502  * Only uncompressed.
503  */
504
505 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
506 #define BMP_ALIGN_CENTER        0x7FFF
507
508 static void splash_align_axis(int *axis, unsigned long panel_size,
509                                         unsigned long picture_size)
510 {
511         unsigned long panel_picture_delta = panel_size - picture_size;
512         unsigned long axis_alignment;
513
514         if (*axis == BMP_ALIGN_CENTER)
515                 axis_alignment = panel_picture_delta / 2;
516         else if (*axis < 0)
517                 axis_alignment = panel_picture_delta + *axis + 1;
518         else
519                 return;
520
521         *axis = max(0, (int)axis_alignment);
522 }
523 #endif
524
525
526 #ifdef CONFIG_LCD_BMP_RLE8
527
528 #define BMP_RLE8_ESCAPE         0
529 #define BMP_RLE8_EOL            0
530 #define BMP_RLE8_EOBMP          1
531 #define BMP_RLE8_DELTA          2
532
533 static void draw_unencoded_bitmap(ushort **fbp, uchar *bmap, ushort *cmap,
534                                   int cnt)
535 {
536         while (cnt > 0) {
537                 *(*fbp)++ = cmap[*bmap++];
538                 cnt--;
539         }
540 }
541
542 static void draw_encoded_bitmap(ushort **fbp, ushort c, int cnt)
543 {
544         ushort *fb = *fbp;
545         int cnt_8copy = cnt >> 3;
546
547         cnt -= cnt_8copy << 3;
548         while (cnt_8copy > 0) {
549                 *fb++ = c;
550                 *fb++ = c;
551                 *fb++ = c;
552                 *fb++ = c;
553                 *fb++ = c;
554                 *fb++ = c;
555                 *fb++ = c;
556                 *fb++ = c;
557                 cnt_8copy--;
558         }
559         while (cnt > 0) {
560                 *fb++ = c;
561                 cnt--;
562         }
563         *fbp = fb;
564 }
565
566 /*
567  * Do not call this function directly, must be called from lcd_display_bitmap.
568  */
569 static void lcd_display_rle8_bitmap(bmp_image_t *bmp, ushort *cmap, uchar *fb,
570                                     int x_off, int y_off)
571 {
572         uchar *bmap;
573         ulong width, height;
574         ulong cnt, runlen;
575         int x, y;
576         int decode = 1;
577
578         width = get_unaligned_le32(&bmp->header.width);
579         height = get_unaligned_le32(&bmp->header.height);
580         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
581
582         x = 0;
583         y = height - 1;
584
585         while (decode) {
586                 if (bmap[0] == BMP_RLE8_ESCAPE) {
587                         switch (bmap[1]) {
588                         case BMP_RLE8_EOL:
589                                 /* end of line */
590                                 bmap += 2;
591                                 x = 0;
592                                 y--;
593                                 /* 16bpix, 2-byte per pixel, width should *2 */
594                                 fb -= (width * 2 + lcd_line_length);
595                                 break;
596                         case BMP_RLE8_EOBMP:
597                                 /* end of bitmap */
598                                 decode = 0;
599                                 break;
600                         case BMP_RLE8_DELTA:
601                                 /* delta run */
602                                 x += bmap[2];
603                                 y -= bmap[3];
604                                 /* 16bpix, 2-byte per pixel, x should *2 */
605                                 fb = (uchar *) (lcd_base + (y + y_off - 1)
606                                         * lcd_line_length + (x + x_off) * 2);
607                                 bmap += 4;
608                                 break;
609                         default:
610                                 /* unencoded run */
611                                 runlen = bmap[1];
612                                 bmap += 2;
613                                 if (y < height) {
614                                         if (x < width) {
615                                                 if (x + runlen > width)
616                                                         cnt = width - x;
617                                                 else
618                                                         cnt = runlen;
619                                                 draw_unencoded_bitmap(
620                                                         (ushort **)&fb,
621                                                         bmap, cmap, cnt);
622                                         }
623                                         x += runlen;
624                                 }
625                                 bmap += runlen;
626                                 if (runlen & 1)
627                                         bmap++;
628                         }
629                 } else {
630                         /* encoded run */
631                         if (y < height) {
632                                 runlen = bmap[0];
633                                 if (x < width) {
634                                         /* aggregate the same code */
635                                         while (bmap[0] == 0xff &&
636                                                bmap[2] != BMP_RLE8_ESCAPE &&
637                                                bmap[1] == bmap[3]) {
638                                                 runlen += bmap[2];
639                                                 bmap += 2;
640                                         }
641                                         if (x + runlen > width)
642                                                 cnt = width - x;
643                                         else
644                                                 cnt = runlen;
645                                         draw_encoded_bitmap((ushort **)&fb,
646                                                 cmap[bmap[1]], cnt);
647                                 }
648                                 x += runlen;
649                         }
650                         bmap += 2;
651                 }
652         }
653 }
654 #endif
655
656 #if defined(CONFIG_MPC823)
657 #define FB_PUT_BYTE(fb, from) *(fb)++ = (255 - *(from)++)
658 #else
659 #define FB_PUT_BYTE(fb, from) *(fb)++ = *(from)++
660 #endif
661
662 #if defined(CONFIG_BMP_16BPP)
663 #if defined(CONFIG_ATMEL_LCD_BGR555)
664 static inline void fb_put_word(uchar **fb, uchar **from)
665 {
666         *(*fb)++ = (((*from)[0] & 0x1f) << 2) | ((*from)[1] & 0x03);
667         *(*fb)++ = ((*from)[0] & 0xe0) | (((*from)[1] & 0x7c) >> 2);
668         *from += 2;
669 }
670 #else
671 static inline void fb_put_word(uchar **fb, uchar **from)
672 {
673         *(*fb)++ = *(*from)++;
674         *(*fb)++ = *(*from)++;
675 }
676 #endif
677 #endif /* CONFIG_BMP_16BPP */
678
679 int lcd_display_bitmap(ulong bmp_image, int x, int y)
680 {
681         ushort *cmap = NULL;
682         ushort *cmap_base = NULL;
683         ushort i, j;
684         uchar *fb;
685         bmp_image_t *bmp = (bmp_image_t *)map_sysmem(bmp_image, 0);
686         uchar *bmap;
687         ushort padded_width;
688         unsigned long width, height, byte_width;
689         unsigned long pwidth = panel_info.vl_col;
690         unsigned colors, bpix, bmp_bpix;
691
692         if (!bmp || !(bmp->header.signature[0] == 'B' &&
693                 bmp->header.signature[1] == 'M')) {
694                 printf("Error: no valid bmp image at %lx\n", bmp_image);
695
696                 return 1;
697         }
698
699         width = get_unaligned_le32(&bmp->header.width);
700         height = get_unaligned_le32(&bmp->header.height);
701         bmp_bpix = get_unaligned_le16(&bmp->header.bit_count);
702
703         colors = 1 << bmp_bpix;
704
705         bpix = NBITS(panel_info.vl_bpix);
706
707         if (bpix != 1 && bpix != 8 && bpix != 16 && bpix != 32) {
708                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
709                         bpix, bmp_bpix);
710
711                 return 1;
712         }
713
714         /*
715          * We support displaying 8bpp BMPs on 16bpp LCDs
716          * and displaying 24bpp BMPs on 32bpp LCDs
717          * */
718         if (bpix != bmp_bpix &&
719             !(bmp_bpix == 8 && bpix == 16) &&
720             !(bmp_bpix == 24 && bpix == 32)) {
721                 printf ("Error: %d bit/pixel mode, but BMP has %d bit/pixel\n",
722                         bpix, get_unaligned_le16(&bmp->header.bit_count));
723                 return 1;
724         }
725
726         debug("Display-bmp: %d x %d  with %d colors\n",
727                 (int)width, (int)height, (int)colors);
728
729         if (bmp_bpix == 8) {
730                 cmap = configuration_get_cmap();
731                 cmap_base = cmap;
732
733                 /* Set color map */
734                 for (i = 0; i < colors; ++i) {
735                         bmp_color_table_entry_t cte = bmp->color_table[i];
736 #if !defined(CONFIG_ATMEL_LCD)
737                         ushort colreg =
738                                 ( ((cte.red)   << 8) & 0xf800) |
739                                 ( ((cte.green) << 3) & 0x07e0) |
740                                 ( ((cte.blue)  >> 3) & 0x001f) ;
741                         *cmap = colreg;
742 #if defined(CONFIG_MPC823)
743                         cmap--;
744 #else
745                         cmap++;
746 #endif
747 #else /* CONFIG_ATMEL_LCD */
748                         lcd_setcolreg(i, cte.red, cte.green, cte.blue);
749 #endif
750                 }
751         }
752
753         padded_width = (width & 0x3 ? (width & ~0x3) + 4 : width);
754
755 #ifdef CONFIG_SPLASH_SCREEN_ALIGN
756         splash_align_axis(&x, pwidth, width);
757         splash_align_axis(&y, panel_info.vl_row, height);
758 #endif /* CONFIG_SPLASH_SCREEN_ALIGN */
759
760         if ((x + width) > pwidth)
761                 width = pwidth - x;
762         if ((y + height) > panel_info.vl_row)
763                 height = panel_info.vl_row - y;
764
765         bmap = (uchar *)bmp + get_unaligned_le32(&bmp->header.data_offset);
766         fb   = (uchar *)(lcd_base +
767                 (y + height - 1) * lcd_line_length + x * bpix / 8);
768
769         switch (bmp_bpix) {
770         case 1: /* pass through */
771         case 8: {
772 #ifdef CONFIG_LCD_BMP_RLE8
773                 u32 compression = get_unaligned_le32(&bmp->header.compression);
774                 if (compression == BMP_BI_RLE8) {
775                         if (bpix != 16) {
776                                 /* TODO implement render code for bpix != 16 */
777                                 printf("Error: only support 16 bpix");
778                                 return 1;
779                         }
780                         lcd_display_rle8_bitmap(bmp, cmap_base, fb, x, y);
781                         break;
782                 }
783 #endif
784
785                 if (bpix != 16)
786                         byte_width = width;
787                 else
788                         byte_width = width * 2;
789
790                 for (i = 0; i < height; ++i) {
791                         WATCHDOG_RESET();
792                         for (j = 0; j < width; j++) {
793                                 if (bpix != 16) {
794                                         FB_PUT_BYTE(fb, bmap);
795                                 } else {
796                                         *(uint16_t *)fb = cmap_base[*(bmap++)];
797                                         fb += sizeof(uint16_t) / sizeof(*fb);
798                                 }
799                         }
800                         bmap += (padded_width - width);
801                         fb -= byte_width + lcd_line_length;
802                 }
803                 break;
804         }
805 #if defined(CONFIG_BMP_16BPP)
806         case 16:
807                 for (i = 0; i < height; ++i) {
808                         WATCHDOG_RESET();
809                         for (j = 0; j < width; j++)
810                                 fb_put_word(&fb, &bmap);
811
812                         bmap += (padded_width - width) * 2;
813                         fb -= width * 2 + lcd_line_length;
814                 }
815                 break;
816 #endif /* CONFIG_BMP_16BPP */
817 #if defined(CONFIG_BMP_24BMP)
818         case 24:
819                 for (i = 0; i < height; ++i) {
820                         for (j = 0; j < width; j++) {
821                                 *(fb++) = *(bmap++);
822                                 *(fb++) = *(bmap++);
823                                 *(fb++) = *(bmap++);
824                                 *(fb++) = 0;
825                         }
826                         fb -= lcd_line_length + width * (bpix / 8);
827                 }
828                 break;
829 #endif /* CONFIG_BMP_24BMP */
830 #if defined(CONFIG_BMP_32BPP)
831         case 32:
832                 for (i = 0; i < height; ++i) {
833                         for (j = 0; j < width; j++) {
834                                 *(fb++) = *(bmap++);
835                                 *(fb++) = *(bmap++);
836                                 *(fb++) = *(bmap++);
837                                 *(fb++) = *(bmap++);
838                         }
839                         fb -= lcd_line_length + width * (bpix / 8);
840                 }
841                 break;
842 #endif /* CONFIG_BMP_32BPP */
843         default:
844                 break;
845         };
846
847         lcd_sync();
848         return 0;
849 }
850 #endif
851
852 static void *lcd_logo(void)
853 {
854 #ifdef CONFIG_SPLASH_SCREEN
855         char *s;
856         ulong addr;
857         static int do_splash = 1;
858
859         if (do_splash && (s = getenv("splashimage")) != NULL) {
860                 int x = 0, y = 0;
861                 do_splash = 0;
862
863                 if (splash_screen_prepare())
864                         return (void *)lcd_base;
865
866                 addr = simple_strtoul (s, NULL, 16);
867
868                 splash_get_pos(&x, &y);
869
870                 if (bmp_display(addr, x, y) == 0)
871                         return (void *)lcd_base;
872         }
873 #endif /* CONFIG_SPLASH_SCREEN */
874
875         bitmap_plot(0, 0);
876
877 #ifdef CONFIG_LCD_INFO
878         lcd_set_col(LCD_INFO_X / VIDEO_FONT_WIDTH);
879         lcd_set_row(LCD_INFO_Y / VIDEO_FONT_HEIGHT);
880         lcd_show_board_info();
881 #endif /* CONFIG_LCD_INFO */
882
883 #if defined(CONFIG_LCD_LOGO) && !defined(CONFIG_LCD_INFO_BELOW_LOGO)
884         return (void *)((ulong)lcd_base + BMP_LOGO_HEIGHT * lcd_line_length);
885 #else
886         return (void *)lcd_base;
887 #endif /* CONFIG_LCD_LOGO && !defined(CONFIG_LCD_INFO_BELOW_LOGO) */
888 }
889
890 #ifdef CONFIG_SPLASHIMAGE_GUARD
891 static int on_splashimage(const char *name, const char *value, enum env_op op,
892         int flags)
893 {
894         ulong addr;
895         int aligned;
896
897         if (op == env_op_delete)
898                 return 0;
899
900         addr = simple_strtoul(value, NULL, 16);
901         /* See README.displaying-bmps */
902         aligned = (addr % 4 == 2);
903         if (!aligned) {
904                 printf("Invalid splashimage value. Value must be 16 bit aligned, but not 32 bit aligned\n");
905                 return -1;
906         }
907
908         return 0;
909 }
910
911 U_BOOT_ENV_CALLBACK(splashimage, on_splashimage);
912 #endif
913
914 int lcd_get_pixel_width(void)
915 {
916         return panel_info.vl_col;
917 }
918
919 int lcd_get_pixel_height(void)
920 {
921         return panel_info.vl_row;
922 }
923
924 #if defined(CONFIG_LCD_DT_SIMPLEFB)
925 static int lcd_dt_simplefb_configure_node(void *blob, int off)
926 {
927 #if LCD_BPP == LCD_COLOR16
928         return fdt_setup_simplefb_node(blob, off, gd->fb_base,
929                                        panel_info.vl_col, panel_info.vl_row,
930                                        panel_info.vl_col * 2, "r5g6b5");
931 #else
932         return -1;
933 #endif
934 }
935
936 int lcd_dt_simplefb_add_node(void *blob)
937 {
938         static const char compat[] = "simple-framebuffer";
939         static const char disabled[] = "disabled";
940         int off, ret;
941
942         off = fdt_add_subnode(blob, 0, "framebuffer");
943         if (off < 0)
944                 return -1;
945
946         ret = fdt_setprop(blob, off, "status", disabled, sizeof(disabled));
947         if (ret < 0)
948                 return -1;
949
950         ret = fdt_setprop(blob, off, "compatible", compat, sizeof(compat));
951         if (ret < 0)
952                 return -1;
953
954         return lcd_dt_simplefb_configure_node(blob, off);
955 }
956
957 int lcd_dt_simplefb_enable_existing_node(void *blob)
958 {
959         int off;
960
961         off = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
962         if (off < 0)
963                 return -1;
964
965         return lcd_dt_simplefb_configure_node(blob, off);
966 }
967 #endif