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836 palkovsky 1
/*
3707 decky 2
 * Copyright (c) 2008 Martin Decky
2071 jermar 3
 * Copyright (c) 2006 Ondrej Palkovsky
836 palkovsky 4
 * All rights reserved.
5
 *
6
 * Redistribution and use in source and binary forms, with or without
7
 * modification, are permitted provided that the following conditions
8
 * are met:
9
 *
10
 * - Redistributions of source code must retain the above copyright
11
 *   notice, this list of conditions and the following disclaimer.
12
 * - Redistributions in binary form must reproduce the above copyright
13
 *   notice, this list of conditions and the following disclaimer in the
14
 *   documentation and/or other materials provided with the distribution.
15
 * - The name of the author may not be used to endorse or promote products
16
 *   derived from this software without specific prior written permission.
17
 *
18
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
 */
29
 
3707 decky 30
/** @addtogroup genarch
1702 cejka 31
 * @{
32
 */
33
/** @file
34
 */
35
 
837 palkovsky 36
#include <genarch/fb/font-8x16.h>
3710 decky 37
#include <genarch/fb/logo-196x66.h>
1993 decky 38
#include <genarch/fb/visuals.h>
837 palkovsky 39
#include <genarch/fb/fb.h>
836 palkovsky 40
#include <console/chardev.h>
41
#include <console/console.h>
1317 vana 42
#include <sysinfo/sysinfo.h>
1316 jermar 43
#include <mm/slab.h>
3707 decky 44
#include <align.h>
839 palkovsky 45
#include <panic.h>
896 jermar 46
#include <memstr.h>
1316 jermar 47
#include <config.h>
1682 palkovsky 48
#include <bitops.h>
49
#include <print.h>
2015 jermar 50
#include <ddi/ddi.h>
2054 jermar 51
#include <arch/types.h>
836 palkovsky 52
 
3707 decky 53
SPINLOCK_INITIALIZE(fb_lock);
862 palkovsky 54
 
3707 decky 55
/**< Physical memory area for fb. */
56
static parea_t fb_parea;
2015 jermar 57
 
3707 decky 58
static uint8_t *fb_addr;
59
static uint8_t *backbuf;
60
static uint8_t *glyphs;
3710 decky 61
static uint8_t *bgscan;
836 palkovsky 62
 
3707 decky 63
static unsigned int xres;
64
static unsigned int yres;
1316 jermar 65
 
3710 decky 66
static unsigned int ylogo;
67
static unsigned int ytrim;
68
static unsigned int rowtrim;
69
 
3707 decky 70
static unsigned int scanline;
71
static unsigned int glyphscanline;
836 palkovsky 72
 
3707 decky 73
static unsigned int pixelbytes;
74
static unsigned int glyphbytes;
3710 decky 75
static unsigned int bgscanbytes;
3707 decky 76
 
77
static unsigned int cols;
78
static unsigned int rows;
1135 decky 79
static unsigned int position = 0;
836 palkovsky 80
 
3707 decky 81
#define BG_COLOR     0x000080
82
#define FG_COLOR     0xffff00
836 palkovsky 83
 
3707 decky 84
#define CURSOR       219
1135 decky 85
 
3707 decky 86
#define RED(x, bits)         ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
87
#define GREEN(x, bits)       ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
88
#define BLUE(x, bits)        ((x >> (8 - bits)) & ((1 << bits) - 1))
1135 decky 89
 
3707 decky 90
#define COL2X(col)           ((col) * FONT_WIDTH)
91
#define ROW2Y(row)           ((row) * FONT_SCANLINES)
1135 decky 92
 
3707 decky 93
#define X2COL(x)             ((x) / FONT_WIDTH)
94
#define Y2ROW(y)             ((y) / FONT_SCANLINES)
838 palkovsky 95
 
3707 decky 96
#define FB_POS(x, y)         ((y) * scanline + (x) * pixelbytes)
97
#define BB_POS(col, row)     ((row) * cols + (col))
98
#define GLYPH_POS(glyph, y)  ((glyph) * glyphbytes + (y) * glyphscanline)
839 palkovsky 99
 
1875 jermar 100
 
3707 decky 101
static void (*rgb_conv)(void *, uint32_t);
836 palkovsky 102
 
839 palkovsky 103
 
3707 decky 104
/** ARGB 8:8:8:8 conversion
105
 *
106
 */
107
static void rgb_0888(void *dst, uint32_t rgb)
1994 decky 108
{
3707 decky 109
    *((uint32_t *) dst) = rgb & 0xffffff;
1994 decky 110
}
111
 
3707 decky 112
 
113
/** ABGR 8:8:8:8 conversion
114
 *
115
 */
116
static void bgr_0888(void *dst, uint32_t rgb)
1994 decky 117
{
3707 decky 118
    *((uint32_t *) dst)
119
        = (BLUE(rgb, 8) << 16) | (GREEN(rgb, 8) << 8) | RED(rgb, 8);
1994 decky 120
}
121
 
3707 decky 122
 
123
/** BGR 8:8:8 conversion
124
 *
125
 */
126
static void rgb_888(void *dst, uint32_t rgb)
839 palkovsky 127
{
1871 jermar 128
#if defined(FB_INVERT_ENDIAN)
3710 decky 129
    ((uint8_t *) dst)[0] = RED(rgb, 8);
130
    ((uint8_t *) dst)[1] = GREEN(rgb, 8);
131
    ((uint8_t *) dst)[2] = BLUE(rgb, 8);
1298 vana 132
#else
3710 decky 133
    ((uint8_t *) dst)[0] = BLUE(rgb, 8);
134
    ((uint8_t *) dst)[1] = GREEN(rgb, 8);
135
    ((uint8_t *) dst)[2] = RED(rgb, 8);
1682 palkovsky 136
#endif
839 palkovsky 137
}
138
 
838 palkovsky 139
 
3707 decky 140
/** RGB 5:5:5 conversion
141
 *
142
 */
143
static void rgb_555(void *dst, uint32_t rgb)
1993 decky 144
{
3707 decky 145
    *((uint16_t *) dst)
146
        = (RED(rgb, 5) << 10) | (GREEN(rgb, 5) << 5) | BLUE(rgb, 5);
1993 decky 147
}
148
 
149
 
3707 decky 150
/** RGB 5:6:5 conversion
151
 *
152
 */
153
static void rgb_565(void *dst, uint32_t rgb)
839 palkovsky 154
{
3707 decky 155
    *((uint16_t *) dst)
156
        = (RED(rgb, 5) << 11) | (GREEN(rgb, 6) << 5) | BLUE(rgb, 5);
839 palkovsky 157
}
158
 
159
 
3707 decky 160
/** RGB 3:2:3
1837 jermar 161
 *
162
 * Even though we try 3:2:3 color scheme here, an 8-bit framebuffer
163
 * will most likely use a color palette. The color appearance
164
 * will be pretty random and depend on the default installed
165
 * palette. This could be fixed by supporting custom palette
166
 * and setting it to simulate the 8-bit truecolor.
3692 rimsky 167
 *
3709 decky 168
 * Currently we set the palette on the ia32, amd64 and sparc64 port.
3692 rimsky 169
 *
170
 * Note that the byte is being inverted by this function. The reason is
171
 * that we would like to use a color palette where the white color code
3709 decky 172
 * is 0 and the black color code is 255, as some machines (Sun Blade 1500)
3692 rimsky 173
 * use these codes for black and white and prevent to set codes
174
 * 0 and 255 to other colors.
3709 decky 175
 *
1837 jermar 176
 */
3707 decky 177
static void rgb_323(void *dst, uint32_t rgb)
839 palkovsky 178
{
3707 decky 179
    *((uint8_t *) dst)
180
        = ~((RED(rgb, 3) << 5) | (GREEN(rgb, 2) << 3) | BLUE(rgb, 3));
1135 decky 181
}
839 palkovsky 182
 
3707 decky 183
 
3710 decky 184
/** Hide logo and refresh screen
185
 *
186
 */
187
static void logo_hide(void)
188
{
189
    ylogo = 0;
190
    ytrim = yres;
191
    rowtrim = rows;
192
    fb_redraw();
193
}
194
 
195
 
3707 decky 196
/** Draw character at given position
1837 jermar 197
 *
198
 */
3710 decky 199
static void glyph_draw(uint8_t glyph, unsigned int col, unsigned int row)
1135 decky 200
{
3707 decky 201
    unsigned int x = COL2X(col);
202
    unsigned int y = ROW2Y(row);
203
    unsigned int yd;
204
 
3710 decky 205
    if (y >= ytrim)
206
        logo_hide();
207
 
3707 decky 208
    backbuf[BB_POS(col, row)] = glyph;
209
 
210
    for (yd = 0; yd < FONT_SCANLINES; yd++)
3710 decky 211
        memcpy(&fb_addr[FB_POS(x, y + yd + ylogo)],
3707 decky 212
            &glyphs[GLYPH_POS(glyph, yd)], glyphscanline);
839 palkovsky 213
}
214
 
1682 palkovsky 215
 
3707 decky 216
/** Scroll screen down by one row
217
 *
218
 *
219
 */
3710 decky 220
static void screen_scroll(void)
838 palkovsky 221
{
3733 decky 222
    if (ylogo > 0) {
3710 decky 223
        logo_hide();
3733 decky 224
        return;
225
    }
3710 decky 226
 
3707 decky 227
    unsigned int row;
228
 
229
    for (row = 0; row < rows; row++) {
230
        unsigned int y = ROW2Y(row);
231
        unsigned int yd;
2054 jermar 232
 
3707 decky 233
        for (yd = 0; yd < FONT_SCANLINES; yd++) {
234
            unsigned int x;
235
            unsigned int col;
236
 
3741 jermar 237
            for (col = 0, x = 0; col < cols; col++,
238
                x += FONT_WIDTH) {
3707 decky 239
                uint8_t glyph;
240
 
241
                if (row < rows - 1) {
3741 jermar 242
                    if (backbuf[BB_POS(col, row)] ==
243
                        backbuf[BB_POS(col, row + 1)])
3707 decky 244
                        continue;
245
 
246
                    glyph = backbuf[BB_POS(col, row + 1)];
247
                } else
248
                    glyph = 0;
249
 
250
                memcpy(&fb_addr[FB_POS(x, y + yd)],
3741 jermar 251
                    &glyphs[GLYPH_POS(glyph, yd)],
252
                    glyphscanline);
3707 decky 253
            }
2086 jermar 254
        }
1682 palkovsky 255
    }
3707 decky 256
 
3752 svoboda 257
    memmove(backbuf, backbuf + cols, cols * (rows - 1));
3707 decky 258
    memsetb(&backbuf[BB_POS(0, rows - 1)], cols, 0);
838 palkovsky 259
}
260
 
261
 
3707 decky 262
static void cursor_put(void)
836 palkovsky 263
{
3710 decky 264
    glyph_draw(CURSOR, position % cols, position / cols);
836 palkovsky 265
}
266
 
267
 
3707 decky 268
static void cursor_remove(void)
836 palkovsky 269
{
3710 decky 270
    glyph_draw(0, position % cols, position / cols);
836 palkovsky 271
}
272
 
838 palkovsky 273
 
836 palkovsky 274
/** Print character to screen
275
 *
3707 decky 276
 * Emulate basic terminal commands.
277
 *
836 palkovsky 278
 */
279
static void fb_putchar(chardev_t *dev, char ch)
280
{
1287 vana 281
    spinlock_lock(&fb_lock);
1135 decky 282
 
283
    switch (ch) {
1888 jermar 284
    case '\n':
3707 decky 285
        cursor_remove();
286
        position += cols;
287
        position -= position % cols;
1888 jermar 288
        break;
289
    case '\r':
3707 decky 290
        cursor_remove();
291
        position -= position % cols;
1888 jermar 292
        break;
293
    case '\b':
3707 decky 294
        cursor_remove();
295
        if (position % cols)
1888 jermar 296
            position--;
297
        break;
298
    case '\t':
3707 decky 299
        cursor_remove();
1888 jermar 300
        do {
3741 jermar 301
            glyph_draw((uint8_t) ' ', position % cols,
302
                position / cols);
838 palkovsky 303
            position++;
3707 decky 304
        } while ((position % 8) && (position < cols * rows));
1888 jermar 305
        break;
306
    default:
3710 decky 307
        glyph_draw((uint8_t) ch, position % cols, position / cols);
1888 jermar 308
        position++;
836 palkovsky 309
    }
1135 decky 310
 
3707 decky 311
    if (position >= cols * rows) {
312
        position -= cols;
3710 decky 313
        screen_scroll();
836 palkovsky 314
    }
1135 decky 315
 
3707 decky 316
    cursor_put();
1135 decky 317
 
1287 vana 318
    spinlock_unlock(&fb_lock);
836 palkovsky 319
}
320
 
321
static chardev_t framebuffer;
322
static chardev_operations_t fb_ops = {
323
    .write = fb_putchar,
324
};
325
 
326
 
3707 decky 327
/** Render glyphs
328
 *
329
 * Convert glyphs from device independent font
330
 * description to current visual representation.
331
 *
332
 */
3710 decky 333
static void glyphs_render(void)
3707 decky 334
{
3710 decky 335
    /* Prerender glyphs */
3707 decky 336
    unsigned int glyph;
337
 
338
    for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
339
        unsigned int y;
340
 
341
        for (y = 0; y < FONT_SCANLINES; y++) {
342
            unsigned int x;
343
 
3741 jermar 344
            for (x = 0; x < FONT_WIDTH; x++) {
345
                void *dst = &glyphs[GLYPH_POS(glyph, y) +
346
                    x * pixelbytes];
347
                uint32_t rgb = (fb_font[ROW2Y(glyph) + y] &
348
                    (1 << (7 - x))) ? FG_COLOR : BG_COLOR;
349
                rgb_conv(dst, rgb);
350
            }
3707 decky 351
        }
352
    }
353
 
3710 decky 354
    /* Prerender background scanline */
355
    unsigned int x;
356
 
357
    for (x = 0; x < xres; x++)
358
        rgb_conv(&bgscan[x * pixelbytes], BG_COLOR);
3707 decky 359
}
360
 
361
 
362
/** Refresh the screen
363
 *
364
 */
365
void fb_redraw(void)
366
{
3710 decky 367
    if (ylogo > 0) {
368
        unsigned int y;
369
 
370
        for (y = 0; y < LOGO_HEIGHT; y++) {
371
            unsigned int x;
372
 
373
            for (x = 0; x < xres; x++)
374
                rgb_conv(&fb_addr[FB_POS(x, y)],
3741 jermar 375
                    (x < LOGO_WIDTH) ?
376
                    fb_logo[y * LOGO_WIDTH + x] :
377
                    LOGO_COLOR);
3710 decky 378
        }
379
    }
380
 
3707 decky 381
    unsigned int row;
382
 
3710 decky 383
    for (row = 0; row < rowtrim; row++) {
384
        unsigned int y = ylogo + ROW2Y(row);
3707 decky 385
        unsigned int yd;
386
 
387
        for (yd = 0; yd < FONT_SCANLINES; yd++) {
388
            unsigned int x;
389
            unsigned int col;
390
 
3741 jermar 391
            for (col = 0, x = 0; col < cols;
392
                col++, x += FONT_WIDTH) {
393
                void *d = &fb_addr[FB_POS(x, y + yd)];
394
                void *s = &glyphs[GLYPH_POS(backbuf[BB_POS(col,
395
                    row)], yd)];
396
                memcpy(d, s, glyphscanline);
397
            }
3707 decky 398
        }
399
    }
400
 
401
    if (COL2X(cols) < xres) {
402
        unsigned int y;
3710 decky 403
        unsigned int size = (xres - COL2X(cols)) * pixelbytes;
3707 decky 404
 
3710 decky 405
        for (y = ylogo; y < yres; y++)
406
            memcpy(&fb_addr[FB_POS(COL2X(cols), y)], bgscan, size);
3707 decky 407
    }
408
 
3733 decky 409
    if (ROW2Y(rowtrim) + ylogo < yres) {
3707 decky 410
        unsigned int y;
411
 
3733 decky 412
        for (y = ROW2Y(rowtrim) + ylogo; y < yres; y++)
3710 decky 413
            memcpy(&fb_addr[FB_POS(0, y)], bgscan, bgscanbytes);
3707 decky 414
    }
415
}
416
 
417
 
836 palkovsky 418
/** Initialize framebuffer as a chardev output device
419
 *
3707 decky 420
 * @param addr   Physical address of the framebuffer
421
 * @param x      Screen width in pixels
422
 * @param y      Screen height in pixels
423
 * @param scan   Bytes per one scanline
424
 * @param visual Color model
425
 *
836 palkovsky 426
 */
3672 jermar 427
void fb_init(fb_properties_t *props)
836 palkovsky 428
{
3672 jermar 429
    switch (props->visual) {
1993 decky 430
    case VISUAL_INDIRECT_8:
3707 decky 431
        rgb_conv = rgb_323;
1991 jermar 432
        pixelbytes = 1;
433
        break;
1993 decky 434
    case VISUAL_RGB_5_5_5:
3707 decky 435
        rgb_conv = rgb_555;
1991 jermar 436
        pixelbytes = 2;
437
        break;
1993 decky 438
    case VISUAL_RGB_5_6_5:
3707 decky 439
        rgb_conv = rgb_565;
1993 decky 440
        pixelbytes = 2;
1991 jermar 441
        break;
1993 decky 442
    case VISUAL_RGB_8_8_8:
3707 decky 443
        rgb_conv = rgb_888;
1993 decky 444
        pixelbytes = 3;
445
        break;
446
    case VISUAL_RGB_8_8_8_0:
3707 decky 447
        rgb_conv = rgb_888;
1991 jermar 448
        pixelbytes = 4;
449
        break;
1993 decky 450
    case VISUAL_RGB_0_8_8_8:
3707 decky 451
        rgb_conv = rgb_0888;
1993 decky 452
        pixelbytes = 4;
453
        break;
1994 decky 454
    case VISUAL_BGR_0_8_8_8:
3707 decky 455
        rgb_conv = bgr_0888;
1994 decky 456
        pixelbytes = 4;
457
        break;
1991 jermar 458
    default:
1993 decky 459
        panic("Unsupported visual.\n");
839 palkovsky 460
    }
1371 decky 461
 
3672 jermar 462
    xres = props->x;
463
    yres = props->y;
464
    scanline = props->scan;
836 palkovsky 465
 
3710 decky 466
    cols = X2COL(xres);
467
    rows = Y2ROW(yres);
3707 decky 468
 
3710 decky 469
    if (yres > ylogo) {
470
        ylogo = LOGO_HEIGHT;
471
        rowtrim = rows - Y2ROW(ylogo);
472
        if (ylogo % FONT_SCANLINES > 0)
473
            rowtrim--;
474
        ytrim = ROW2Y(rowtrim);
475
    } else {
476
        ylogo = 0;
477
        ytrim = yres;
478
        rowtrim = rows;
479
    }
480
 
3707 decky 481
    glyphscanline = FONT_WIDTH * pixelbytes;
3710 decky 482
    glyphbytes = ROW2Y(glyphscanline);
483
    bgscanbytes = xres * pixelbytes;
3707 decky 484
 
485
    unsigned int fbsize = scanline * yres;
486
    unsigned int bbsize = cols * rows;
487
    unsigned int glyphsize = FONT_GLYPHS * glyphbytes;
488
 
489
    backbuf = (uint8_t *) malloc(bbsize, 0);
490
    if (!backbuf)
491
        panic("Unable to allocate backbuffer.\n");
492
 
493
    glyphs = (uint8_t *) malloc(glyphsize, 0);
494
    if (!glyphs)
495
        panic("Unable to allocate glyphs.\n");
496
 
3710 decky 497
    bgscan = malloc(bgscanbytes, 0);
498
    if (!bgscan)
3707 decky 499
        panic("Unable to allocate background pixel.\n");
500
 
501
    memsetb(backbuf, bbsize, 0);
502
 
3710 decky 503
    glyphs_render();
3707 decky 504
 
505
    fb_addr = (uint8_t *) hw_map((uintptr_t) props->addr, fbsize);
506
 
3692 rimsky 507
    fb_parea.pbase = (uintptr_t) props->addr + props->offset;
3707 decky 508
    fb_parea.vbase = (uintptr_t) fb_addr;
2015 jermar 509
    fb_parea.frames = SIZE2FRAMES(fbsize);
510
    fb_parea.cacheable = false;
511
    ddi_parea_register(&fb_parea);
3707 decky 512
 
1690 palkovsky 513
    sysinfo_set_item_val("fb", NULL, true);
514
    sysinfo_set_item_val("fb.kind", NULL, 1);
515
    sysinfo_set_item_val("fb.width", NULL, xres);
516
    sysinfo_set_item_val("fb.height", NULL, yres);
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    sysinfo_set_item_val("fb.scanline", NULL, scanline);
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    sysinfo_set_item_val("fb.visual", NULL, props->visual);
519
    sysinfo_set_item_val("fb.address.physical", NULL, props->addr);
1990 decky 520
 
3707 decky 521
    fb_redraw();
522
 
836 palkovsky 523
    chardev_initialize("fb", &framebuffer, &fb_ops);
524
    stdout = &framebuffer;
525
}
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1790 jermar 527
/** @}
1702 cejka 528
 */