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836 palkovsky 1
/*
2
 * Copyright (C) 2006 Ondrej 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>
36
#include <genarch/fb/fb.h>
836 palkovsky 37
#include <console/chardev.h>
38
#include <console/console.h>
1317 vana 39
#include <sysinfo/sysinfo.h>
1316 jermar 40
#include <mm/slab.h>
1371 decky 41
#include <align.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>
836 palkovsky 47
 
862 palkovsky 48
#include "helenos.xbm"
49
 
836 palkovsky 50
SPINLOCK_INITIALIZE(fb_lock);
51
 
1780 jermar 52
static uint8_t *fbaddress = NULL;
836 palkovsky 53
 
1780 jermar 54
static uint8_t *blankline = NULL;
55
static uint8_t *dbbuffer = NULL; /* Buffer for fast scrolling console */
1682 palkovsky 56
static int dboffset;
1316 jermar 57
 
1135 decky 58
static unsigned int xres = 0;
59
static unsigned int yres = 0;
60
static unsigned int scanline = 0;
1327 decky 61
static unsigned int bitspp = 0;
1135 decky 62
static unsigned int pixelbytes = 0;
1875 jermar 63
#ifdef FB_INVERT_COLORS
64
static bool invert_colors = true;
65
#else
66
static bool invert_colors = false;
67
#endif
836 palkovsky 68
 
1135 decky 69
static unsigned int position = 0;
70
static unsigned int columns = 0;
71
static unsigned int rows = 0;
836 palkovsky 72
 
1135 decky 73
#define COL_WIDTH   8
74
#define ROW_BYTES   (scanline * FONT_SCANLINES)
836 palkovsky 75
 
1135 decky 76
#define BGCOLOR     0x000080
77
#define FGCOLOR     0xffff00
78
#define LOGOCOLOR   0x2020b0
79
 
80
#define RED(x, bits)    ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))
81
#define GREEN(x, bits)  ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
82
#define BLUE(x, bits)   ((x >> (8 - bits)) & ((1 << bits) - 1))
83
 
1682 palkovsky 84
#define POINTPOS(x, y)  ((y) * scanline + (x) * pixelbytes)
1135 decky 85
 
838 palkovsky 86
/***************************************************************/
87
/* Pixel specific fuctions */
88
 
1682 palkovsky 89
static void (*rgb2scr)(void *, int);
90
static int (*scr2rgb)(void *);
839 palkovsky 91
 
1875 jermar 92
static inline int COLOR(int color)
93
{
94
    return invert_colors ? ~color : color;
95
}
96
 
1682 palkovsky 97
/* Conversion routines between different color representations */
98
static void rgb_4byte(void *dst, int rgb)
836 palkovsky 99
{
1990 decky 100
    *((int *) dst) = rgb;
836 palkovsky 101
}
102
 
1682 palkovsky 103
static int byte4_rgb(void *src)
838 palkovsky 104
{
1990 decky 105
    return (*((int *) src)) & 0xffffff;
839 palkovsky 106
}
107
 
1682 palkovsky 108
static void rgb_3byte(void *dst, int rgb)
839 palkovsky 109
{
1780 jermar 110
    uint8_t *scr = dst;
1871 jermar 111
#if defined(FB_INVERT_ENDIAN)
1682 palkovsky 112
    scr[0] = RED(rgb, 8);
113
    scr[1] = GREEN(rgb, 8);
114
    scr[2] = BLUE(rgb, 8);
1298 vana 115
#else
1682 palkovsky 116
    scr[2] = RED(rgb, 8);
117
    scr[1] = GREEN(rgb, 8);
118
    scr[0] = BLUE(rgb, 8);
119
#endif
839 palkovsky 120
}
121
 
1682 palkovsky 122
static int byte3_rgb(void *src)
839 palkovsky 123
{
1780 jermar 124
    uint8_t *scr = src;
1871 jermar 125
#if defined(FB_INVERT_ENDIAN)
1682 palkovsky 126
    return scr[0] << 16 | scr[1] << 8 | scr[2];
1298 vana 127
#else
1682 palkovsky 128
    return scr[2] << 16 | scr[1] << 8 | scr[0];
1298 vana 129
#endif  
838 palkovsky 130
}
131
 
1682 palkovsky 132
/**  16-bit depth (5:6:5) */
133
static void rgb_2byte(void *dst, int rgb)
839 palkovsky 134
{
1682 palkovsky 135
    /* 5-bit, 6-bits, 5-bits */
1990 decky 136
    *((uint16_t *) dst) = RED(rgb, 5) << 11 | GREEN(rgb, 6) << 5 | BLUE(rgb, 5);
839 palkovsky 137
}
138
 
1682 palkovsky 139
/** 16-bit depth (5:6:5) */
140
static int byte2_rgb(void *src)
839 palkovsky 141
{
1780 jermar 142
    int color = *(uint16_t *)(src);
1135 decky 143
    return (((color >> 11) & 0x1f) << (16 + 3)) | (((color >> 5) & 0x3f) << (8 + 2)) | ((color & 0x1f) << 3);
839 palkovsky 144
}
145
 
1837 jermar 146
/** Put pixel - 8-bit depth (color palette/3:2:3)
147
 *
148
 * Even though we try 3:2:3 color scheme here, an 8-bit framebuffer
149
 * will most likely use a color palette. The color appearance
150
 * will be pretty random and depend on the default installed
151
 * palette. This could be fixed by supporting custom palette
152
 * and setting it to simulate the 8-bit truecolor.
153
 */
1682 palkovsky 154
static void rgb_1byte(void *dst, int rgb)
839 palkovsky 155
{
1990 decky 156
    *((uint8_t *) dst) = RED(rgb, 3) << 5 | GREEN(rgb, 2) << 3 | BLUE(rgb, 3);
1135 decky 157
}
839 palkovsky 158
 
1837 jermar 159
/** Return pixel color - 8-bit depth (color palette/3:2:3)
160
 *
161
 * See the comment for rgb_1byte().
162
 */
1682 palkovsky 163
static int byte1_rgb(void *src)
1135 decky 164
{
1780 jermar 165
    int color = *(uint8_t *)src;
1135 decky 166
    return (((color >> 5) & 0x7) << (16 + 5)) | (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
839 palkovsky 167
}
168
 
1682 palkovsky 169
static void putpixel(unsigned int x, unsigned int y, int color)
1135 decky 170
{
1990 decky 171
    (*rgb2scr)(&fbaddress[POINTPOS(x, y)], COLOR(color));
1682 palkovsky 172
 
173
    if (dbbuffer) {
174
        int dline = (y + dboffset) % yres;
1990 decky 175
        (*rgb2scr)(&dbbuffer[POINTPOS(x, dline)], COLOR(color));
1682 palkovsky 176
    }
1135 decky 177
}
839 palkovsky 178
 
1682 palkovsky 179
/** Get pixel from viewport */
180
static int getpixel(unsigned int x, unsigned int y)
181
{
182
    if (dbbuffer) {
183
        int dline = (y + dboffset) % yres;
1990 decky 184
        return COLOR((*scr2rgb)(&dbbuffer[POINTPOS(x, dline)]));
1682 palkovsky 185
    }
1990 decky 186
    return COLOR((*scr2rgb)(&fbaddress[POINTPOS(x, y)]));
1682 palkovsky 187
}
1135 decky 188
 
1682 palkovsky 189
 
1135 decky 190
/** Fill screen with background color */
191
static void clear_screen(void)
839 palkovsky 192
{
1135 decky 193
    unsigned int y;
839 palkovsky 194
 
1682 palkovsky 195
    for (y = 0; y < yres; y++) {
1990 decky 196
        memcpy(&fbaddress[scanline * y], blankline, xres * pixelbytes);
1682 palkovsky 197
        if (dbbuffer)
1990 decky 198
            memcpy(&dbbuffer[scanline * y], blankline, xres * pixelbytes);
1682 palkovsky 199
    }
839 palkovsky 200
}
201
 
1135 decky 202
 
838 palkovsky 203
/** Scroll screen one row up */
204
static void scroll_screen(void)
205
{
1780 jermar 206
    uint8_t *lastline = &fbaddress[(rows - 1) * ROW_BYTES];
1682 palkovsky 207
    int firstsz;
838 palkovsky 208
 
1682 palkovsky 209
    if (dbbuffer) {
1990 decky 210
        memcpy(&dbbuffer[dboffset * scanline], blankline, FONT_SCANLINES * scanline);
1682 palkovsky 211
 
212
        dboffset = (dboffset + FONT_SCANLINES) % yres;
1990 decky 213
        firstsz = yres - dboffset;
838 palkovsky 214
 
1990 decky 215
        memcpy(fbaddress, &dbbuffer[scanline * dboffset], firstsz * scanline);
216
        memcpy(&fbaddress[firstsz * scanline], dbbuffer, dboffset * scanline);
1682 palkovsky 217
    } else {
218
        memcpy((void *) fbaddress, (void *) &fbaddress[ROW_BYTES], scanline * yres - ROW_BYTES);
219
        /* Clear last row */
220
        memcpy((void *) lastline, (void *) blankline, ROW_BYTES);
221
    }
838 palkovsky 222
}
223
 
224
 
1135 decky 225
static void invert_pixel(unsigned int x, unsigned int y)
836 palkovsky 226
{
1682 palkovsky 227
    putpixel(x, y, ~getpixel(x, y));
836 palkovsky 228
}
229
 
230
 
231
/** Draw one line of glyph at a given position */
1135 decky 232
static void draw_glyph_line(unsigned int glline, unsigned int x, unsigned int y)
836 palkovsky 233
{
1135 decky 234
    unsigned int i;
836 palkovsky 235
 
1135 decky 236
    for (i = 0; i < 8; i++)
237
        if (glline & (1 << (7 - i))) {
1682 palkovsky 238
            putpixel(x + i, y, FGCOLOR);
836 palkovsky 239
        } else
1682 palkovsky 240
            putpixel(x + i, y, BGCOLOR);
836 palkovsky 241
}
242
 
838 palkovsky 243
/***************************************************************/
244
/* Character-console functions */
245
 
836 palkovsky 246
/** Draw character at given position */
1780 jermar 247
static void draw_glyph(uint8_t glyph, unsigned int col, unsigned int row)
836 palkovsky 248
{
1135 decky 249
    unsigned int y;
836 palkovsky 250
 
1135 decky 251
    for (y = 0; y < FONT_SCANLINES; y++)
252
        draw_glyph_line(fb_font[glyph * FONT_SCANLINES + y], col * COL_WIDTH, row * FONT_SCANLINES + y);
836 palkovsky 253
}
254
 
255
/** Invert character at given position */
1135 decky 256
static void invert_char(unsigned int col, unsigned int row)
836 palkovsky 257
{
1135 decky 258
    unsigned int x;
259
    unsigned int y;
836 palkovsky 260
 
1135 decky 261
    for (x = 0; x < COL_WIDTH; x++)
262
        for (y = 0; y < FONT_SCANLINES; y++)
263
            invert_pixel(col * COL_WIDTH + x, row * FONT_SCANLINES + y);
836 palkovsky 264
}
265
 
266
/** Draw character at default position */
267
static void draw_char(char chr)
268
{
1135 decky 269
    draw_glyph(chr, position % columns, position / columns);
836 palkovsky 270
}
271
 
1135 decky 272
static void draw_logo(unsigned int startx, unsigned int starty)
862 palkovsky 273
{
1135 decky 274
    unsigned int x;
275
    unsigned int y;
276
    unsigned int byte;
277
    unsigned int rowbytes;
862 palkovsky 278
 
1135 decky 279
    rowbytes = (helenos_width - 1) / 8 + 1;
862 palkovsky 280
 
1135 decky 281
    for (y = 0; y < helenos_height; y++)
282
        for (x = 0; x < helenos_width; x++) {
283
            byte = helenos_bits[rowbytes * y + x / 8];
862 palkovsky 284
            byte >>= x % 8;
285
            if (byte & 1)
1875 jermar 286
                putpixel(startx + x, starty + y, COLOR(LOGOCOLOR));
862 palkovsky 287
        }
288
}
289
 
838 palkovsky 290
/***************************************************************/
291
/* Stdout specific functions */
292
 
836 palkovsky 293
static void invert_cursor(void)
294
{
1135 decky 295
    invert_char(position % columns, position / columns);
836 palkovsky 296
}
297
 
298
/** Print character to screen
299
 *
300
 *  Emulate basic terminal commands
301
 */
302
static void fb_putchar(chardev_t *dev, char ch)
303
{
1287 vana 304
    spinlock_lock(&fb_lock);
1135 decky 305
 
306
    switch (ch) {
1888 jermar 307
    case '\n':
308
        invert_cursor();
309
        position += columns;
310
        position -= position % columns;
311
        break;
312
    case '\r':
313
        invert_cursor();
314
        position -= position % columns;
315
        break;
316
    case '\b':
317
        invert_cursor();
318
        if (position % columns)
319
            position--;
320
        break;
321
    case '\t':
322
        invert_cursor();
323
        do {
324
            draw_char(' ');
838 palkovsky 325
            position++;
1888 jermar 326
        } while ((position % 8) && position < columns * rows);
327
        break;
328
    default:
329
        draw_char(ch);
330
        position++;
836 palkovsky 331
    }
1135 decky 332
 
333
    if (position >= columns * rows) {
836 palkovsky 334
        position -= columns;
335
        scroll_screen();
336
    }
1135 decky 337
 
836 palkovsky 338
    invert_cursor();
1135 decky 339
 
1287 vana 340
    spinlock_unlock(&fb_lock);
836 palkovsky 341
}
342
 
343
static chardev_t framebuffer;
344
static chardev_operations_t fb_ops = {
345
    .write = fb_putchar,
346
};
347
 
348
 
349
/** Initialize framebuffer as a chardev output device
350
 *
1837 jermar 351
 * @param addr  Physical address of the framebuffer
352
 * @param x     Screen width in pixels
353
 * @param y     Screen height in pixels
354
 * @param bpp   Bits per pixel (8, 16, 24, 32)
355
 * @param scan  Bytes per one scanline
356
 * @param align Request alignment for 24bpp mode.
836 palkovsky 357
 */
1837 jermar 358
void fb_init(uintptr_t addr, unsigned int x, unsigned int y, unsigned int bpp, unsigned int scan, bool align)
836 palkovsky 359
{
1135 decky 360
    switch (bpp) {
1990 decky 361
        case 8:
362
            rgb2scr = rgb_1byte;
363
            scr2rgb = byte1_rgb;
364
            pixelbytes = 1;
365
            break;
366
        case 16:
367
            rgb2scr = rgb_2byte;
368
            scr2rgb = byte2_rgb;
369
            pixelbytes = 2;
370
            break;
371
        case 24:
372
            rgb2scr = rgb_3byte;
373
            scr2rgb = byte3_rgb;
374
            if (align)
375
                pixelbytes = 4;
376
            else
377
                pixelbytes = 3;
378
            break;
379
        case 32:
380
            rgb2scr = rgb_4byte;
381
            scr2rgb = byte4_rgb;
1135 decky 382
            pixelbytes = 4;
1990 decky 383
            break;
384
        default:
385
            panic("Unsupported bpp.\n");
839 palkovsky 386
    }
1371 decky 387
 
388
    unsigned int fbsize = scan * y;
389
 
390
    /* Map the framebuffer */
1780 jermar 391
    fbaddress = (uint8_t *) hw_map((uintptr_t) addr, fbsize);
1371 decky 392
 
836 palkovsky 393
    xres = x;
394
    yres = y;
1327 decky 395
    bitspp = bpp;
1135 decky 396
    scanline = scan;
836 palkovsky 397
 
1135 decky 398
    rows = y / FONT_SCANLINES;
399
    columns = x / COL_WIDTH;
836 palkovsky 400
 
1690 palkovsky 401
    sysinfo_set_item_val("fb", NULL, true);
402
    sysinfo_set_item_val("fb.kind", NULL, 1);
403
    sysinfo_set_item_val("fb.width", NULL, xres);
404
    sysinfo_set_item_val("fb.height", NULL, yres);
405
    sysinfo_set_item_val("fb.bpp", NULL, bpp);
1869 jermar 406
    sysinfo_set_item_val("fb.bpp-align", NULL, align);
1690 palkovsky 407
    sysinfo_set_item_val("fb.scanline", NULL, scan);
408
    sysinfo_set_item_val("fb.address.physical", NULL, addr);
1875 jermar 409
    sysinfo_set_item_val("fb.invert-colors", NULL, invert_colors);
1690 palkovsky 410
 
1682 palkovsky 411
    /* Allocate double buffer */
1990 decky 412
    unsigned int order = fnzb(SIZE2FRAMES(ALIGN_UP(fbsize, FRAME_SIZE))) + 1;
413
    dbbuffer = (uint8_t * ) frame_alloc(order, FRAME_ATOMIC | FRAME_KA);
1760 palkovsky 414
    if (!dbbuffer)
1682 palkovsky 415
        printf("Failed to allocate scroll buffer.\n");
416
    dboffset = 0;
417
 
418
    /* Initialized blank line */
1780 jermar 419
    blankline = (uint8_t *) malloc(ROW_BYTES, FRAME_ATOMIC);
1766 palkovsky 420
    if (!blankline)
421
        panic("Failed to allocate blank line for framebuffer.");
1990 decky 422
    for (y = 0; y < FONT_SCANLINES; y++)
423
        for (x = 0; x < xres; x++)
424
            (*rgb2scr)(&blankline[POINTPOS(x, y)], COLOR(BGCOLOR));
425
 
1682 palkovsky 426
    clear_screen();
427
 
428
    /* Update size of screen to match text area */
429
    yres = rows * FONT_SCANLINES;
430
 
1135 decky 431
    draw_logo(xres - helenos_width, 0);
836 palkovsky 432
    invert_cursor();
433
 
434
    chardev_initialize("fb", &framebuffer, &fb_ops);
435
    stdout = &framebuffer;
436
}
1702 cejka 437
 
1790 jermar 438
/** @}
1702 cejka 439
 */