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836 palkovsky 1
/*
2071 jermar 2
 * Copyright (c) 2006 Ondrej Palkovsky
836 palkovsky 3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
1790 jermar 29
/** @addtogroup genarch
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
837 palkovsky 35
#include <genarch/fb/font-8x16.h>
1993 decky 36
#include <genarch/fb/visuals.h>
837 palkovsky 37
#include <genarch/fb/fb.h>
836 palkovsky 38
#include <console/chardev.h>
39
#include <console/console.h>
1317 vana 40
#include <sysinfo/sysinfo.h>
1316 jermar 41
#include <mm/slab.h>
839 palkovsky 42
#include <panic.h>
896 jermar 43
#include <memstr.h>
1316 jermar 44
#include <config.h>
1682 palkovsky 45
#include <bitops.h>
46
#include <print.h>
2015 jermar 47
#include <ddi/ddi.h>
2054 jermar 48
#include <arch/types.h>
836 palkovsky 49
 
862 palkovsky 50
#include "helenos.xbm"
51
 
2015 jermar 52
static parea_t fb_parea;        /**< Physical memory area for fb. */
53
 
836 palkovsky 54
SPINLOCK_INITIALIZE(fb_lock);
55
 
1780 jermar 56
static uint8_t *fbaddress = NULL;
836 palkovsky 57
 
1780 jermar 58
static uint8_t *blankline = NULL;
2054 jermar 59
static uint8_t *dbbuffer = NULL;    /* Buffer for fast scrolling console */
60
static index_t dboffset;
1316 jermar 61
 
1135 decky 62
static unsigned int xres = 0;
63
static unsigned int yres = 0;
64
static unsigned int scanline = 0;
65
static unsigned int pixelbytes = 0;
1875 jermar 66
#ifdef FB_INVERT_COLORS
67
static bool invert_colors = true;
68
#else
69
static bool invert_colors = false;
70
#endif
836 palkovsky 71
 
1135 decky 72
static unsigned int position = 0;
73
static unsigned int columns = 0;
74
static unsigned int rows = 0;
836 palkovsky 75
 
1135 decky 76
#define COL_WIDTH   8
77
#define ROW_BYTES   (scanline * FONT_SCANLINES)
836 palkovsky 78
 
1135 decky 79
#define BGCOLOR     0x000080
80
#define FGCOLOR     0xffff00
81
#define LOGOCOLOR   0x2020b0
82
 
2086 jermar 83
#define RED(x, bits)    ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
1135 decky 84
#define GREEN(x, bits)  ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
85
#define BLUE(x, bits)   ((x >> (8 - bits)) & ((1 << bits) - 1))
86
 
1682 palkovsky 87
#define POINTPOS(x, y)  ((y) * scanline + (x) * pixelbytes)
1135 decky 88
 
838 palkovsky 89
/***************************************************************/
90
/* Pixel specific fuctions */
91
 
1682 palkovsky 92
static void (*rgb2scr)(void *, int);
93
static int (*scr2rgb)(void *);
839 palkovsky 94
 
1875 jermar 95
static inline int COLOR(int color)
96
{
97
    return invert_colors ? ~color : color;
98
}
99
 
1682 palkovsky 100
/* Conversion routines between different color representations */
1993 decky 101
static void rgb_byte0888(void *dst, int rgb)
836 palkovsky 102
{
1990 decky 103
    *((int *) dst) = rgb;
836 palkovsky 104
}
105
 
1993 decky 106
static int byte0888_rgb(void *src)
838 palkovsky 107
{
1990 decky 108
    return (*((int *) src)) & 0xffffff;
839 palkovsky 109
}
110
 
1994 decky 111
static void bgr_byte0888(void *dst, int rgb)
112
{
2086 jermar 113
    *((uint32_t *) dst) = BLUE(rgb, 8) << 16 | GREEN(rgb, 8) << 8 |
114
        RED(rgb, 8);
1994 decky 115
}
116
 
117
static int byte0888_bgr(void *src)
118
{
119
    int color = *(uint32_t *)(src);
2086 jermar 120
    return ((color & 0xff) << 16) | (((color >> 8) & 0xff) << 8) |
121
        ((color >> 16) & 0xff);
1994 decky 122
}
123
 
1993 decky 124
static void rgb_byte888(void *dst, int rgb)
839 palkovsky 125
{
2102 decky 126
    uint8_t *scr = (uint8_t *) dst;
1871 jermar 127
#if defined(FB_INVERT_ENDIAN)
1682 palkovsky 128
    scr[0] = RED(rgb, 8);
129
    scr[1] = GREEN(rgb, 8);
130
    scr[2] = BLUE(rgb, 8);
1298 vana 131
#else
1682 palkovsky 132
    scr[2] = RED(rgb, 8);
133
    scr[1] = GREEN(rgb, 8);
134
    scr[0] = BLUE(rgb, 8);
135
#endif
839 palkovsky 136
}
137
 
1993 decky 138
static int byte888_rgb(void *src)
839 palkovsky 139
{
2102 decky 140
    uint8_t *scr = (uint8_t *) src;
1871 jermar 141
#if defined(FB_INVERT_ENDIAN)
1682 palkovsky 142
    return scr[0] << 16 | scr[1] << 8 | scr[2];
1298 vana 143
#else
1682 palkovsky 144
    return scr[2] << 16 | scr[1] << 8 | scr[0];
1298 vana 145
#endif  
838 palkovsky 146
}
147
 
1993 decky 148
/**  16-bit depth (5:5:5) */
149
static void rgb_byte555(void *dst, int rgb)
150
{
151
    /* 5-bit, 5-bits, 5-bits */
2086 jermar 152
    *((uint16_t *) dst) = RED(rgb, 5) << 10 | GREEN(rgb, 5) << 5 |
153
        BLUE(rgb, 5);
1993 decky 154
}
155
 
156
/** 16-bit depth (5:5:5) */
157
static int byte555_rgb(void *src)
158
{
159
    int color = *(uint16_t *)(src);
2086 jermar 160
    return (((color >> 10) & 0x1f) << (16 + 3)) |
161
        (((color >> 5) & 0x1f) << (8 + 3)) | ((color & 0x1f) << 3);
1993 decky 162
}
163
 
1682 palkovsky 164
/**  16-bit depth (5:6:5) */
1993 decky 165
static void rgb_byte565(void *dst, int rgb)
839 palkovsky 166
{
1682 palkovsky 167
    /* 5-bit, 6-bits, 5-bits */
2086 jermar 168
    *((uint16_t *) dst) = RED(rgb, 5) << 11 | GREEN(rgb, 6) << 5 |
169
        BLUE(rgb, 5);
839 palkovsky 170
}
171
 
1682 palkovsky 172
/** 16-bit depth (5:6:5) */
1993 decky 173
static int byte565_rgb(void *src)
839 palkovsky 174
{
1780 jermar 175
    int color = *(uint16_t *)(src);
2086 jermar 176
    return (((color >> 11) & 0x1f) << (16 + 3)) |
177
        (((color >> 5) & 0x3f) << (8 + 2)) | ((color & 0x1f) << 3);
839 palkovsky 178
}
179
 
1837 jermar 180
/** Put pixel - 8-bit depth (color palette/3:2:3)
181
 *
182
 * Even though we try 3:2:3 color scheme here, an 8-bit framebuffer
183
 * will most likely use a color palette. The color appearance
184
 * will be pretty random and depend on the default installed
185
 * palette. This could be fixed by supporting custom palette
186
 * and setting it to simulate the 8-bit truecolor.
187
 */
1993 decky 188
static void rgb_byte8(void *dst, int rgb)
839 palkovsky 189
{
2086 jermar 190
    *((uint8_t *) dst) = RED(rgb, 3) << 5 | GREEN(rgb, 2) << 3 |
191
        BLUE(rgb, 3);
1135 decky 192
}
839 palkovsky 193
 
3664 rimsky 194
static void sb1500rgb_byte8(void *dst, int rgb)
195
{
196
    if (RED(rgb, 1) && GREEN(rgb, 1) && BLUE(rgb, 1))
197
        *((uint8_t *) dst) = 255;
198
    else if (RED(rgb, 1) && GREEN(rgb, 1))
199
        *((uint8_t *) dst) = 150;
200
    else if (GREEN(rgb, 1) && BLUE(rgb, 1))
201
        *((uint8_t *) dst) = 47;
202
    else if (RED(rgb, 1) && BLUE(rgb, 1))
203
        *((uint8_t *) dst) = 48;
204
    else if (RED(rgb, 1))
205
        *((uint8_t *) dst) = 32;
206
    else if (GREEN(rgb, 1))
207
        *((uint8_t *) dst) = 47;
208
    else if (BLUE(rgb, 1))
209
        *((uint8_t *) dst) = 2;
210
    else
211
        *((uint8_t *) dst) = 1;
212
}
213
 
1837 jermar 214
/** Return pixel color - 8-bit depth (color palette/3:2:3)
215
 *
1993 decky 216
 * See the comment for rgb_byte().
1837 jermar 217
 */
1993 decky 218
static int byte8_rgb(void *src)
1135 decky 219
{
1780 jermar 220
    int color = *(uint8_t *)src;
2086 jermar 221
    return (((color >> 5) & 0x7) << (16 + 5)) |
222
        (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
839 palkovsky 223
}
224
 
1682 palkovsky 225
static void putpixel(unsigned int x, unsigned int y, int color)
1135 decky 226
{
1990 decky 227
    (*rgb2scr)(&fbaddress[POINTPOS(x, y)], COLOR(color));
1682 palkovsky 228
 
229
    if (dbbuffer) {
230
        int dline = (y + dboffset) % yres;
1990 decky 231
        (*rgb2scr)(&dbbuffer[POINTPOS(x, dline)], COLOR(color));
1682 palkovsky 232
    }
1135 decky 233
}
839 palkovsky 234
 
1682 palkovsky 235
/** Get pixel from viewport */
236
static int getpixel(unsigned int x, unsigned int y)
237
{
238
    if (dbbuffer) {
239
        int dline = (y + dboffset) % yres;
1990 decky 240
        return COLOR((*scr2rgb)(&dbbuffer[POINTPOS(x, dline)]));
1682 palkovsky 241
    }
1990 decky 242
    return COLOR((*scr2rgb)(&fbaddress[POINTPOS(x, y)]));
1682 palkovsky 243
}
1135 decky 244
 
1682 palkovsky 245
 
1135 decky 246
/** Fill screen with background color */
247
static void clear_screen(void)
839 palkovsky 248
{
1135 decky 249
    unsigned int y;
839 palkovsky 250
 
1682 palkovsky 251
    for (y = 0; y < yres; y++) {
1990 decky 252
        memcpy(&fbaddress[scanline * y], blankline, xres * pixelbytes);
1682 palkovsky 253
        if (dbbuffer)
2086 jermar 254
            memcpy(&dbbuffer[scanline * y], blankline,
255
                xres * pixelbytes);
1682 palkovsky 256
    }
839 palkovsky 257
}
258
 
1135 decky 259
 
838 palkovsky 260
/** Scroll screen one row up */
261
static void scroll_screen(void)
262
{
1682 palkovsky 263
    if (dbbuffer) {
2054 jermar 264
        count_t first;
265
 
2086 jermar 266
        /* Clear the last row */
1993 decky 267
        memcpy(&dbbuffer[dboffset * scanline], blankline, ROW_BYTES);
1682 palkovsky 268
 
269
        dboffset = (dboffset + FONT_SCANLINES) % yres;
2054 jermar 270
        first = yres - dboffset;
2086 jermar 271
 
272
        /* Move all rows one row up */
273
        if (xres * pixelbytes == scanline) {
274
            memcpy(fbaddress, &dbbuffer[dboffset * scanline],
275
                first * scanline);
276
            memcpy(&fbaddress[first * scanline], dbbuffer,
277
                dboffset * scanline);
278
        } else {
279
            /*
280
             * When the scanline is bigger than number of bytes
281
             * in the X-resolution, chances are that the
282
             * frame buffer memory past the X-resolution is special
283
             * in some way. For example, the SUNW,ffb framebuffer
284
             * wraps this area around the beginning of the same
285
             * line. To avoid troubles, copy only memory as
286
             * specified by the resolution.
287
             */
2102 decky 288
            unsigned int i;
838 palkovsky 289
 
2086 jermar 290
            for (i = 0; i < first; i++)
291
                memcpy(&fbaddress[i * scanline],
292
                    &dbbuffer[(dboffset + i) * scanline],
293
                    xres * pixelbytes);
294
            for (i = 0; i < dboffset; i++)
295
                memcpy(&fbaddress[(first + i) * scanline],
296
                    &dbbuffer[i * scanline], xres * pixelbytes);
297
        }
1682 palkovsky 298
    } else {
2054 jermar 299
        uint8_t *lastline = &fbaddress[(rows - 1) * ROW_BYTES];
300
 
2086 jermar 301
        if (xres * pixelbytes == scanline) {
302
            /* Move all rows one row up */
303
            memcpy((void *) fbaddress,
304
                (void *) &fbaddress[ROW_BYTES],
305
                scanline * yres - ROW_BYTES);
306
            /* Clear the last row */
307
            memcpy((void *) lastline, (void *) blankline,
308
                ROW_BYTES);
309
        } else {
310
            /*
311
             * See the comment in the dbbuffer case.
312
             */
2102 decky 313
            unsigned int i;
2086 jermar 314
 
315
            /* Move all rows one row up */
316
            for (i = 0; i < yres - FONT_SCANLINES; i++)
317
                memcpy(&fbaddress[i * scanline],
318
                    &fbaddress[(i + FONT_SCANLINES) * scanline],
319
                    xres * pixelbytes);
320
            /* Clear the last row */
321
            for (i = 0; i < FONT_SCANLINES; i++)
322
                memcpy(&lastline[i * scanline],
323
                    &blankline[i * scanline],
324
                    xres * pixelbytes);
325
        }
1682 palkovsky 326
    }
838 palkovsky 327
}
328
 
329
 
1135 decky 330
static void invert_pixel(unsigned int x, unsigned int y)
836 palkovsky 331
{
1682 palkovsky 332
    putpixel(x, y, ~getpixel(x, y));
836 palkovsky 333
}
334
 
335
 
336
/** Draw one line of glyph at a given position */
1135 decky 337
static void draw_glyph_line(unsigned int glline, unsigned int x, unsigned int y)
836 palkovsky 338
{
1135 decky 339
    unsigned int i;
836 palkovsky 340
 
1135 decky 341
    for (i = 0; i < 8; i++)
342
        if (glline & (1 << (7 - i))) {
1682 palkovsky 343
            putpixel(x + i, y, FGCOLOR);
836 palkovsky 344
        } else
1682 palkovsky 345
            putpixel(x + i, y, BGCOLOR);
836 palkovsky 346
}
347
 
838 palkovsky 348
/***************************************************************/
349
/* Character-console functions */
350
 
836 palkovsky 351
/** Draw character at given position */
1780 jermar 352
static void draw_glyph(uint8_t glyph, unsigned int col, unsigned int row)
836 palkovsky 353
{
1135 decky 354
    unsigned int y;
836 palkovsky 355
 
1135 decky 356
    for (y = 0; y < FONT_SCANLINES; y++)
2086 jermar 357
        draw_glyph_line(fb_font[glyph * FONT_SCANLINES + y],
358
            col * COL_WIDTH, row * FONT_SCANLINES + y);
836 palkovsky 359
}
360
 
361
/** Invert character at given position */
1135 decky 362
static void invert_char(unsigned int col, unsigned int row)
836 palkovsky 363
{
1135 decky 364
    unsigned int x;
365
    unsigned int y;
836 palkovsky 366
 
1135 decky 367
    for (x = 0; x < COL_WIDTH; x++)
368
        for (y = 0; y < FONT_SCANLINES; y++)
2086 jermar 369
            invert_pixel(col * COL_WIDTH + x,
370
                row * FONT_SCANLINES + y);
836 palkovsky 371
}
372
 
373
/** Draw character at default position */
374
static void draw_char(char chr)
375
{
1135 decky 376
    draw_glyph(chr, position % columns, position / columns);
836 palkovsky 377
}
378
 
1135 decky 379
static void draw_logo(unsigned int startx, unsigned int starty)
862 palkovsky 380
{
1135 decky 381
    unsigned int x;
382
    unsigned int y;
383
    unsigned int byte;
384
    unsigned int rowbytes;
862 palkovsky 385
 
1135 decky 386
    rowbytes = (helenos_width - 1) / 8 + 1;
862 palkovsky 387
 
1135 decky 388
    for (y = 0; y < helenos_height; y++)
389
        for (x = 0; x < helenos_width; x++) {
390
            byte = helenos_bits[rowbytes * y + x / 8];
862 palkovsky 391
            byte >>= x % 8;
392
            if (byte & 1)
2054 jermar 393
                putpixel(startx + x, starty + y,
2086 jermar 394
                    COLOR(LOGOCOLOR));
862 palkovsky 395
        }
396
}
397
 
838 palkovsky 398
/***************************************************************/
399
/* Stdout specific functions */
400
 
836 palkovsky 401
static void invert_cursor(void)
402
{
1135 decky 403
    invert_char(position % columns, position / columns);
836 palkovsky 404
}
405
 
406
/** Print character to screen
407
 *
408
 *  Emulate basic terminal commands
409
 */
410
static void fb_putchar(chardev_t *dev, char ch)
411
{
1287 vana 412
    spinlock_lock(&fb_lock);
1135 decky 413
 
414
    switch (ch) {
1888 jermar 415
    case '\n':
416
        invert_cursor();
417
        position += columns;
418
        position -= position % columns;
419
        break;
420
    case '\r':
421
        invert_cursor();
422
        position -= position % columns;
423
        break;
424
    case '\b':
425
        invert_cursor();
426
        if (position % columns)
427
            position--;
428
        break;
429
    case '\t':
430
        invert_cursor();
431
        do {
432
            draw_char(' ');
838 palkovsky 433
            position++;
1888 jermar 434
        } while ((position % 8) && position < columns * rows);
435
        break;
436
    default:
437
        draw_char(ch);
438
        position++;
836 palkovsky 439
    }
1135 decky 440
 
441
    if (position >= columns * rows) {
836 palkovsky 442
        position -= columns;
443
        scroll_screen();
444
    }
1135 decky 445
 
836 palkovsky 446
    invert_cursor();
1135 decky 447
 
1287 vana 448
    spinlock_unlock(&fb_lock);
836 palkovsky 449
}
450
 
451
static chardev_t framebuffer;
452
static chardev_operations_t fb_ops = {
453
    .write = fb_putchar,
454
};
455
 
456
 
457
/** Initialize framebuffer as a chardev output device
458
 *
3618 rimsky 459
 * @param props   properties of the framebuffer device
1993 decky 460
 *
836 palkovsky 461
 */
3618 rimsky 462
void fb_init(fb_properties_t *props)
836 palkovsky 463
{
3618 rimsky 464
    switch (props->visual) {
1993 decky 465
    case VISUAL_INDIRECT_8:
466
        rgb2scr = rgb_byte8;
467
        scr2rgb = byte8_rgb;
1991 jermar 468
        pixelbytes = 1;
469
        break;
3664 rimsky 470
    case VISUAL_SB1500_PALETTE:
471
        rgb2scr = sb1500rgb_byte8;
472
        scr2rgb = byte8_rgb;
473
        pixelbytes = 1;
474
        break;
1993 decky 475
    case VISUAL_RGB_5_5_5:
476
        rgb2scr = rgb_byte555;
477
        scr2rgb = byte555_rgb;
1991 jermar 478
        pixelbytes = 2;
479
        break;
1993 decky 480
    case VISUAL_RGB_5_6_5:
481
        rgb2scr = rgb_byte565;
482
        scr2rgb = byte565_rgb;
483
        pixelbytes = 2;
1991 jermar 484
        break;
1993 decky 485
    case VISUAL_RGB_8_8_8:
486
        rgb2scr = rgb_byte888;
487
        scr2rgb = byte888_rgb;
488
        pixelbytes = 3;
489
        break;
490
    case VISUAL_RGB_8_8_8_0:
491
        rgb2scr = rgb_byte888;
492
        scr2rgb = byte888_rgb;
1991 jermar 493
        pixelbytes = 4;
494
        break;
1993 decky 495
    case VISUAL_RGB_0_8_8_8:
496
        rgb2scr = rgb_byte0888;
497
        scr2rgb = byte0888_rgb;
498
        pixelbytes = 4;
499
        break;
1994 decky 500
    case VISUAL_BGR_0_8_8_8:
501
        rgb2scr = bgr_byte0888;
502
        scr2rgb = byte0888_bgr;
503
        pixelbytes = 4;
504
        break;
1991 jermar 505
    default:
1993 decky 506
        panic("Unsupported visual.\n");
839 palkovsky 507
    }
1371 decky 508
 
3618 rimsky 509
    unsigned int fbsize = (props->scan) * (props->y) + (props->fb_start);
1371 decky 510
 
511
    /* Map the framebuffer */
3618 rimsky 512
    fbaddress = (uint8_t *) hw_map((uintptr_t) (props->addr), fbsize);
513
    fbaddress += props->fb_start;
1371 decky 514
 
3618 rimsky 515
    xres = props->x;
516
    yres = props->y;
517
    scanline = props->scan;
836 palkovsky 518
 
3618 rimsky 519
    rows = (props->y) / FONT_SCANLINES;
520
    columns = (props->x) / COL_WIDTH;
836 palkovsky 521
 
3618 rimsky 522
    fb_parea.pbase = (uintptr_t) (props->addr);
2015 jermar 523
    fb_parea.vbase = (uintptr_t) fbaddress;
524
    fb_parea.frames = SIZE2FRAMES(fbsize);
525
    fb_parea.cacheable = false;
526
    ddi_parea_register(&fb_parea);
527
 
1690 palkovsky 528
    sysinfo_set_item_val("fb", NULL, true);
529
    sysinfo_set_item_val("fb.kind", NULL, 1);
530
    sysinfo_set_item_val("fb.width", NULL, xres);
531
    sysinfo_set_item_val("fb.height", NULL, yres);
3618 rimsky 532
    sysinfo_set_item_val("fb.scanline", NULL, (props->scan));
533
    sysinfo_set_item_val("fb.visual", NULL, (props->visual));
534
    sysinfo_set_item_val("fb.address.physical", NULL, (props->addr));
1875 jermar 535
    sysinfo_set_item_val("fb.invert-colors", NULL, invert_colors);
1690 palkovsky 536
 
1682 palkovsky 537
    /* Allocate double buffer */
2054 jermar 538
    unsigned int order = fnzb(SIZE2FRAMES(fbsize) - 1) + 1;
539
    dbbuffer = (uint8_t *) frame_alloc(order, FRAME_ATOMIC | FRAME_KA);
1760 palkovsky 540
    if (!dbbuffer)
1682 palkovsky 541
        printf("Failed to allocate scroll buffer.\n");
542
    dboffset = 0;
543
 
544
    /* Initialized blank line */
1780 jermar 545
    blankline = (uint8_t *) malloc(ROW_BYTES, FRAME_ATOMIC);
1766 palkovsky 546
    if (!blankline)
547
        panic("Failed to allocate blank line for framebuffer.");
3618 rimsky 548
    unsigned int x, y;
1990 decky 549
    for (y = 0; y < FONT_SCANLINES; y++)
550
        for (x = 0; x < xres; x++)
551
            (*rgb2scr)(&blankline[POINTPOS(x, y)], COLOR(BGCOLOR));
552
 
1682 palkovsky 553
    clear_screen();
554
 
555
    /* Update size of screen to match text area */
556
    yres = rows * FONT_SCANLINES;
557
 
1135 decky 558
    draw_logo(xres - helenos_width, 0);
836 palkovsky 559
    invert_cursor();
560
 
561
    chardev_initialize("fb", &framebuffer, &fb_ops);
562
    stdout = &framebuffer;
563
}
1702 cejka 564
 
1790 jermar 565
/** @}
1702 cejka 566
 */