Rev 862 | Rev 891 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
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 | |||
837 | palkovsky | 29 | #include <genarch/fb/font-8x16.h> |
30 | #include <genarch/fb/fb.h> |
||
836 | palkovsky | 31 | #include <console/chardev.h> |
32 | #include <console/console.h> |
||
839 | palkovsky | 33 | #include <panic.h> |
836 | palkovsky | 34 | |
862 | palkovsky | 35 | #include "helenos.xbm" |
36 | |||
836 | palkovsky | 37 | SPINLOCK_INITIALIZE(fb_lock); |
38 | |||
838 | palkovsky | 39 | static __u8 *fbaddress=NULL; |
836 | palkovsky | 40 | static int xres,yres; |
41 | static int position=0; |
||
42 | static int columns=0; |
||
43 | static int rows=0; |
||
838 | palkovsky | 44 | static int pixelbytes=0; |
836 | palkovsky | 45 | |
46 | #define COL_WIDTH 8 |
||
47 | #define ROW_HEIGHT (FONT_SCANLINES) |
||
838 | palkovsky | 48 | #define ROW_PIX (xres*ROW_HEIGHT*pixelbytes) |
836 | palkovsky | 49 | |
50 | #define BGCOLOR 0x000080 |
||
51 | #define FGCOLOR 0xffff00 |
||
862 | palkovsky | 52 | #define LOGOCOLOR 0x2020b0 |
836 | palkovsky | 53 | |
838 | palkovsky | 54 | #define RED(x,bits) ((x >> (16+8-bits)) & ((1<<bits)-1)) |
55 | #define GREEN(x,bits) ((x >> (8+8-bits)) & ((1<<bits)-1)) |
||
56 | #define BLUE(x,bits) ((x >> (8-bits)) & ((1<<bits)-1)) |
||
836 | palkovsky | 57 | |
838 | palkovsky | 58 | #define POINTPOS(x,y) ((y*xres+x)*pixelbytes) |
836 | palkovsky | 59 | |
838 | palkovsky | 60 | /***************************************************************/ |
61 | /* Pixel specific fuctions */ |
||
62 | |||
839 | palkovsky | 63 | static void (*putpixel)(int x,int y,int color); |
64 | static int (*getpixel)(int x,int y); |
||
65 | |||
66 | /** Put pixel - 24-bit depth, 1 free byte */ |
||
67 | static void putpixel_4byte(int x,int y,int color) |
||
836 | palkovsky | 68 | { |
838 | palkovsky | 69 | int startbyte = POINTPOS(x,y); |
70 | |||
839 | palkovsky | 71 | *((__u32 *)(fbaddress+startbyte)) = color; |
836 | palkovsky | 72 | } |
73 | |||
838 | palkovsky | 74 | /** Return pixel color */ |
839 | palkovsky | 75 | static int getpixel_4byte(int x,int y) |
838 | palkovsky | 76 | { |
77 | int startbyte = POINTPOS(x,y); |
||
839 | palkovsky | 78 | |
79 | return *((__u32 *)(fbaddress+startbyte)) & 0xffffff; |
||
80 | } |
||
81 | |||
82 | /** Draw pixel of given color on screen - 24-bit depth */ |
||
83 | static void putpixel_3byte(int x,int y,int color) |
||
84 | { |
||
85 | int startbyte = POINTPOS(x,y); |
||
86 | |||
87 | fbaddress[startbyte] = RED(color,8); |
||
88 | fbaddress[startbyte+1] = GREEN(color,8); |
||
89 | fbaddress[startbyte+2] = BLUE(color,8); |
||
90 | } |
||
91 | |||
92 | static int getpixel_3byte(int x,int y) |
||
93 | { |
||
94 | int startbyte = POINTPOS(x,y); |
||
838 | palkovsky | 95 | int result; |
96 | |||
839 | palkovsky | 97 | result = fbaddress[startbyte] << 16 \ |
98 | | fbaddress[startbyte+1] << 8 \ |
||
99 | | fbaddress[startbyte+2]; |
||
838 | palkovsky | 100 | return result; |
101 | } |
||
102 | |||
839 | palkovsky | 103 | /** Put pixel - 16-bit depth (5:6:6) */ |
104 | static void putpixel_2byte(int x,int y,int color) |
||
105 | { |
||
106 | int startbyte = POINTPOS(x,y); |
||
107 | int compcolor; |
||
108 | |||
109 | /* 5-bit, 5-bits, 5-bits */ |
||
110 | compcolor = RED(color,5) << 11 \ |
||
111 | | GREEN(color,6) << 5 \ |
||
112 | | BLUE(color,5); |
||
113 | *((__u16 *)(fbaddress+startbyte)) = compcolor; |
||
114 | } |
||
115 | |||
116 | static int getpixel_2byte(int x,int y) |
||
117 | { |
||
118 | int startbyte = POINTPOS(x,y); |
||
119 | int color; |
||
120 | int red,green,blue; |
||
121 | |||
122 | color = *((__u16 *)(fbaddress+startbyte)); |
||
123 | red = (color >> 11) & 0x1f; |
||
124 | green = (color >> 5) & 0x3f; |
||
125 | blue = color & 0x1f; |
||
126 | return (red << (16+3)) | (green << (8+2)) | (blue << 3); |
||
127 | } |
||
128 | |||
886 | jermar | 129 | /** Put pixel - 8-bit depth (3:2:3) */ |
839 | palkovsky | 130 | static void putpixel_1byte(int x,int y,int color) |
131 | { |
||
132 | int compcolor; |
||
133 | |||
886 | jermar | 134 | /* 3-bit, 2-bits, 3-bits */ |
839 | palkovsky | 135 | compcolor = RED(color,3) << 5 \ |
886 | jermar | 136 | | GREEN(color,2) << 3 \ |
137 | | BLUE(color,3); |
||
839 | palkovsky | 138 | fbaddress[POINTPOS(x,y)] = compcolor; |
139 | } |
||
140 | |||
141 | |||
142 | static int getpixel_1byte(int x,int y) |
||
143 | { |
||
144 | int color; |
||
145 | int red,green,blue; |
||
146 | |||
147 | color = fbaddress[POINTPOS(x,y)]; |
||
148 | red = (color >> 5) & 0x7; |
||
886 | jermar | 149 | green = (color >> 3) & 0x7; |
839 | palkovsky | 150 | blue = color & 0x3; |
151 | return (red << (16+5)) | (green << (8+5)) | blue << 6; |
||
152 | } |
||
153 | |||
838 | palkovsky | 154 | static void clear_line(int y); |
155 | /** Scroll screen one row up */ |
||
156 | static void scroll_screen(void) |
||
157 | { |
||
158 | int i; |
||
159 | |||
160 | for (i=0;i < (xres*yres*pixelbytes)-ROW_PIX; i++) |
||
161 | fbaddress[i] = fbaddress[i+ROW_PIX]; |
||
162 | |||
163 | /* Clear last row */ |
||
164 | for (i=0; i < ROW_HEIGHT;i++) |
||
165 | clear_line((rows-1)*ROW_HEIGHT+i); |
||
166 | |||
167 | } |
||
168 | |||
169 | |||
170 | /***************************************************************/ |
||
171 | /* Screen specific function */ |
||
172 | |||
836 | palkovsky | 173 | /** Fill line with color BGCOLOR */ |
174 | static void clear_line(int y) |
||
175 | { |
||
176 | int x; |
||
177 | for (x=0; x<xres;x++) |
||
839 | palkovsky | 178 | (*putpixel)(x,y,BGCOLOR); |
836 | palkovsky | 179 | } |
180 | |||
181 | /** Fill screen with background color */ |
||
182 | static void clear_screen(void) |
||
183 | { |
||
184 | int y; |
||
185 | |||
186 | for (y=0; y<yres;y++) |
||
187 | clear_line(y); |
||
188 | } |
||
189 | |||
190 | static void invert_pixel(int x, int y) |
||
191 | { |
||
839 | palkovsky | 192 | (*putpixel)(x,y, ~(*getpixel)(x,y)); |
836 | palkovsky | 193 | } |
194 | |||
195 | |||
196 | /** Draw one line of glyph at a given position */ |
||
197 | static void draw_glyph_line(int glline, int x, int y) |
||
198 | { |
||
199 | int i; |
||
200 | |||
201 | for (i=0; i < 8; i++) |
||
202 | if (glline & (1 << (7-i))) { |
||
839 | palkovsky | 203 | (*putpixel)(x+i,y,FGCOLOR); |
836 | palkovsky | 204 | } else |
839 | palkovsky | 205 | (*putpixel)(x+i,y,BGCOLOR); |
836 | palkovsky | 206 | } |
207 | |||
838 | palkovsky | 208 | /***************************************************************/ |
209 | /* Character-console functions */ |
||
210 | |||
836 | palkovsky | 211 | /** Draw character at given position */ |
838 | palkovsky | 212 | static void draw_glyph(__u8 glyph, int col, int row) |
836 | palkovsky | 213 | { |
214 | int y; |
||
215 | |||
216 | for (y=0; y < FONT_SCANLINES; y++) |
||
217 | draw_glyph_line(fb_font[glyph*FONT_SCANLINES+y], |
||
218 | col*COL_WIDTH, row*ROW_HEIGHT+y); |
||
219 | } |
||
220 | |||
221 | /** Invert character at given position */ |
||
222 | static void invert_char(int col, int row) |
||
223 | { |
||
224 | int x,y; |
||
225 | |||
226 | for (x=0; x < COL_WIDTH; x++) |
||
227 | for (y=0; y < FONT_SCANLINES; y++) |
||
228 | invert_pixel(col*COL_WIDTH+x,row*ROW_HEIGHT+y); |
||
229 | } |
||
230 | |||
231 | /** Draw character at default position */ |
||
232 | static void draw_char(char chr) |
||
233 | { |
||
234 | draw_glyph(chr, position % columns, position/columns); |
||
235 | } |
||
236 | |||
862 | palkovsky | 237 | static void draw_logo(int startx, int starty) |
238 | { |
||
239 | int x,y; |
||
240 | int byte; |
||
241 | int rowbytes; |
||
242 | |||
243 | rowbytes = (helenos_width-1)/8 + 1; |
||
244 | |||
245 | for (y=0;y < helenos_height;y++) |
||
246 | for (x=0;x < helenos_width; x++ ) { |
||
247 | byte = helenos_bits[rowbytes*y + x/8]; |
||
248 | byte >>= x % 8; |
||
249 | if (byte & 1) |
||
250 | (*putpixel)(startx+x,starty+y,LOGOCOLOR); |
||
251 | } |
||
252 | } |
||
253 | |||
838 | palkovsky | 254 | /***************************************************************/ |
255 | /* Stdout specific functions */ |
||
256 | |||
836 | palkovsky | 257 | static void invert_cursor(void) |
258 | { |
||
259 | invert_char(position % columns, position/columns); |
||
260 | } |
||
261 | |||
262 | /** Print character to screen |
||
263 | * |
||
264 | * Emulate basic terminal commands |
||
265 | */ |
||
266 | static void fb_putchar(chardev_t *dev, char ch) |
||
267 | { |
||
268 | spinlock_lock(&fb->lock); |
||
269 | |||
270 | if (ch == '\n') { |
||
271 | invert_cursor(); |
||
272 | position += columns; |
||
273 | position -= position % columns; |
||
274 | } else if (ch == '\r') { |
||
275 | invert_cursor(); |
||
276 | position -= position % columns; |
||
277 | } else if (ch == '\b') { |
||
278 | invert_cursor(); |
||
279 | if (position % columns) |
||
280 | position--; |
||
838 | palkovsky | 281 | } else if (ch == '\t') { |
282 | invert_cursor(); |
||
283 | do { |
||
284 | draw_char(' '); |
||
285 | position++; |
||
286 | } while (position % 8); |
||
836 | palkovsky | 287 | } else { |
288 | draw_char(ch); |
||
289 | position++; |
||
290 | } |
||
291 | if (position >= columns*rows) { |
||
292 | position -= columns; |
||
293 | scroll_screen(); |
||
294 | } |
||
295 | invert_cursor(); |
||
296 | spinlock_unlock(&fb->lock); |
||
297 | } |
||
298 | |||
299 | static chardev_t framebuffer; |
||
300 | static chardev_operations_t fb_ops = { |
||
301 | .write = fb_putchar, |
||
302 | }; |
||
303 | |||
304 | |||
305 | /** Initialize framebuffer as a chardev output device |
||
306 | * |
||
307 | * @param addr Address of framebuffer |
||
308 | * @param x X resolution |
||
309 | * @param y Y resolution |
||
838 | palkovsky | 310 | * @param bytes Bytes per pixel (2,3,4) |
836 | palkovsky | 311 | */ |
838 | palkovsky | 312 | void fb_init(__address addr, int x, int y, int bytes) |
836 | palkovsky | 313 | { |
314 | fbaddress = (unsigned char *)addr; |
||
839 | palkovsky | 315 | |
316 | switch (bytes) { |
||
317 | case 1: |
||
318 | putpixel = putpixel_1byte; |
||
319 | getpixel = getpixel_1byte; |
||
320 | break; |
||
321 | case 2: |
||
322 | putpixel = putpixel_2byte; |
||
323 | getpixel = getpixel_2byte; |
||
324 | break; |
||
325 | case 3: |
||
326 | putpixel = putpixel_3byte; |
||
327 | getpixel = getpixel_3byte; |
||
328 | break; |
||
329 | case 4: |
||
330 | putpixel = putpixel_4byte; |
||
331 | getpixel = getpixel_4byte; |
||
332 | break; |
||
333 | default: |
||
334 | panic("Unsupported color depth"); |
||
335 | } |
||
836 | palkovsky | 336 | |
337 | xres = x; |
||
338 | yres = y; |
||
838 | palkovsky | 339 | pixelbytes = bytes; |
836 | palkovsky | 340 | |
341 | rows = y/ROW_HEIGHT; |
||
342 | columns = x/COL_WIDTH; |
||
343 | |||
344 | clear_screen(); |
||
862 | palkovsky | 345 | draw_logo(xres-helenos_width, 0); |
836 | palkovsky | 346 | invert_cursor(); |
347 | |||
348 | chardev_initialize("fb", &framebuffer, &fb_ops); |
||
349 | stdout = &framebuffer; |
||
350 | } |
||
351 |