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  1. /*
  2.  * Copyright (c) 2008 Martin Decky
  3.  * Copyright (c) 2006 Ondrej 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.  
  30. /** @addtogroup genarch
  31.  * @{
  32.  */
  33. /** @file
  34.  */
  35.  
  36. #include <genarch/fb/font-8x16.h>
  37. #include <genarch/fb/logo-196x66.h>
  38. #include <genarch/fb/visuals.h>
  39. #include <genarch/fb/fb.h>
  40. #include <console/chardev.h>
  41. #include <console/console.h>
  42. #include <sysinfo/sysinfo.h>
  43. #include <mm/slab.h>
  44. #include <align.h>
  45. #include <panic.h>
  46. #include <memstr.h>
  47. #include <config.h>
  48. #include <bitops.h>
  49. #include <print.h>
  50. #include <ddi/ddi.h>
  51. #include <arch/types.h>
  52.  
  53. SPINLOCK_INITIALIZE(fb_lock);
  54.  
  55. /**< Physical memory area for fb. */
  56. static parea_t fb_parea;
  57.  
  58. static uint8_t *fb_addr;
  59. static uint8_t *backbuf;
  60. static uint8_t *glyphs;
  61. static uint8_t *bgscan;
  62.  
  63. static unsigned int xres;
  64. static unsigned int yres;
  65.  
  66. static unsigned int ylogo;
  67. static unsigned int ytrim;
  68. static unsigned int rowtrim;
  69.  
  70. static unsigned int scanline;
  71. static unsigned int glyphscanline;
  72.  
  73. static unsigned int pixelbytes;
  74. static unsigned int glyphbytes;
  75. static unsigned int bgscanbytes;
  76.  
  77. static unsigned int cols;
  78. static unsigned int rows;
  79. static unsigned int position = 0;
  80.  
  81. #define BG_COLOR     0x000080
  82. #define FG_COLOR     0xffff00
  83.  
  84. #define CURSOR       219
  85.  
  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))
  89.  
  90. #define COL2X(col)           ((col) * FONT_WIDTH)
  91. #define ROW2Y(row)           ((row) * FONT_SCANLINES)
  92.  
  93. #define X2COL(x)             ((x) / FONT_WIDTH)
  94. #define Y2ROW(y)             ((y) / FONT_SCANLINES)
  95.  
  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)
  99.  
  100.  
  101. static void (*rgb_conv)(void *, uint32_t);
  102.  
  103.  
  104. /** ARGB 8:8:8:8 conversion
  105.  *
  106.  */
  107. static void rgb_0888(void *dst, uint32_t rgb)
  108. {
  109.     *((uint32_t *) dst) = rgb & 0xffffff;
  110. }
  111.  
  112.  
  113. /** ABGR 8:8:8:8 conversion
  114.  *
  115.  */
  116. static void bgr_0888(void *dst, uint32_t rgb)
  117. {
  118.     *((uint32_t *) dst)
  119.         = (BLUE(rgb, 8) << 16) | (GREEN(rgb, 8) << 8) | RED(rgb, 8);
  120. }
  121.  
  122.  
  123. /** RGB 8:8:8 conversion
  124.  *
  125.  */
  126. static void rgb_888(void *dst, uint32_t rgb)
  127. {
  128.     ((uint8_t *) dst)[0] = BLUE(rgb, 8);
  129.     ((uint8_t *) dst)[1] = GREEN(rgb, 8);
  130.     ((uint8_t *) dst)[2] = RED(rgb, 8);
  131. }
  132.  
  133.  
  134. /** BGR 8:8:8 conversion
  135.  *
  136.  */
  137. static void bgr_888(void *dst, uint32_t rgb)
  138. {
  139.     ((uint8_t *) dst)[0] = RED(rgb, 8);
  140.     ((uint8_t *) dst)[1] = GREEN(rgb, 8);
  141.     ((uint8_t *) dst)[2] = BLUE(rgb, 8);
  142. }
  143.  
  144.  
  145. /** RGB 5:5:5 conversion
  146.  *
  147.  */
  148. static void rgb_555(void *dst, uint32_t rgb)
  149. {
  150.     *((uint16_t *) dst)
  151.         = (RED(rgb, 5) << 10) | (GREEN(rgb, 5) << 5) | BLUE(rgb, 5);
  152. }
  153.  
  154.  
  155. /** RGB 5:6:5 conversion
  156.  *
  157.  */
  158. static void rgb_565(void *dst, uint32_t rgb)
  159. {
  160.     *((uint16_t *) dst)
  161.         = (RED(rgb, 5) << 11) | (GREEN(rgb, 6) << 5) | BLUE(rgb, 5);
  162. }
  163.  
  164.  
  165. /** RGB 3:2:3
  166.  *
  167.  * Even though we try 3:2:3 color scheme here, an 8-bit framebuffer
  168.  * will most likely use a color palette. The color appearance
  169.  * will be pretty random and depend on the default installed
  170.  * palette. This could be fixed by supporting custom palette
  171.  * and setting it to simulate the 8-bit truecolor.
  172.  *
  173.  * Currently we set the palette on the ia32, amd64 and sparc64 port.
  174.  *
  175.  * Note that the byte is being inverted by this function. The reason is
  176.  * that we would like to use a color palette where the white color code
  177.  * is 0 and the black color code is 255, as some machines (Sun Blade 1500)
  178.  * use these codes for black and white and prevent to set codes
  179.  * 0 and 255 to other colors.
  180.  *
  181.  */
  182. static void rgb_323(void *dst, uint32_t rgb)
  183. {
  184.     *((uint8_t *) dst)
  185.         = ~((RED(rgb, 3) << 5) | (GREEN(rgb, 2) << 3) | BLUE(rgb, 3));
  186. }
  187.  
  188.  
  189. /** Hide logo and refresh screen
  190.  *
  191.  */
  192. static void logo_hide(bool silent)
  193. {
  194.     ylogo = 0;
  195.     ytrim = yres;
  196.     rowtrim = rows;
  197.     if (!silent)
  198.         fb_redraw();
  199. }
  200.  
  201.  
  202. /** Draw character at given position
  203.  *
  204.  */
  205. static void glyph_draw(uint8_t glyph, unsigned int col, unsigned int row, bool silent)
  206. {
  207.     unsigned int x = COL2X(col);
  208.     unsigned int y = ROW2Y(row);
  209.     unsigned int yd;
  210.    
  211.     if (y >= ytrim)
  212.         logo_hide(silent);
  213.    
  214.     backbuf[BB_POS(col, row)] = glyph;
  215.    
  216.     if (!silent) {
  217.         for (yd = 0; yd < FONT_SCANLINES; yd++)
  218.             memcpy(&fb_addr[FB_POS(x, y + yd + ylogo)],
  219.                 &glyphs[GLYPH_POS(glyph, yd)], glyphscanline);
  220.     }
  221. }
  222.  
  223.  
  224. /** Scroll screen down by one row
  225.  *
  226.  *
  227.  */
  228. static void screen_scroll(bool silent)
  229. {
  230.     if (ylogo > 0) {
  231.         logo_hide(silent);
  232.         return;
  233.     }
  234.    
  235.     if (!silent) {
  236.         unsigned int row;
  237.        
  238.         for (row = 0; row < rows; row++) {
  239.             unsigned int y = ROW2Y(row);
  240.             unsigned int yd;
  241.            
  242.             for (yd = 0; yd < FONT_SCANLINES; yd++) {
  243.                 unsigned int x;
  244.                 unsigned int col;
  245.                
  246.                 for (col = 0, x = 0; col < cols; col++,
  247.                     x += FONT_WIDTH) {
  248.                     uint8_t glyph;
  249.                    
  250.                     if (row < rows - 1) {
  251.                         if (backbuf[BB_POS(col, row)] ==
  252.                             backbuf[BB_POS(col, row + 1)])
  253.                             continue;
  254.                        
  255.                         glyph = backbuf[BB_POS(col, row + 1)];
  256.                     } else
  257.                         glyph = 0;
  258.                    
  259.                     memcpy(&fb_addr[FB_POS(x, y + yd)],
  260.                         &glyphs[GLYPH_POS(glyph, yd)],
  261.                         glyphscanline);
  262.                 }
  263.             }
  264.         }
  265.     }
  266.    
  267.     memmove(backbuf, backbuf + cols, cols * (rows - 1));
  268.     memsetb(&backbuf[BB_POS(0, rows - 1)], cols, 0);
  269. }
  270.  
  271.  
  272. static void cursor_put(bool silent)
  273. {
  274.     glyph_draw(CURSOR, position % cols, position / cols, silent);
  275. }
  276.  
  277.  
  278. static void cursor_remove(bool silent)
  279. {
  280.     glyph_draw(0, position % cols, position / cols, silent);
  281. }
  282.  
  283.  
  284. /** Print character to screen
  285.  *
  286.  * Emulate basic terminal commands.
  287.  *
  288.  */
  289. static void fb_putchar(chardev_t *dev, char ch, bool silent)
  290. {
  291.     spinlock_lock(&fb_lock);
  292.    
  293.     switch (ch) {
  294.     case '\n':
  295.         cursor_remove(silent);
  296.         position += cols;
  297.         position -= position % cols;
  298.         break;
  299.     case '\r':
  300.         cursor_remove(silent);
  301.         position -= position % cols;
  302.         break;
  303.     case '\b':
  304.         cursor_remove(silent);
  305.         if (position % cols)
  306.             position--;
  307.         break;
  308.     case '\t':
  309.         cursor_remove(silent);
  310.         do {
  311.             glyph_draw((uint8_t) ' ', position % cols,
  312.                 position / cols, silent);
  313.             position++;
  314.         } while ((position % 8) && (position < cols * rows));
  315.         break;
  316.     default:
  317.         glyph_draw((uint8_t) ch, position % cols,
  318.             position / cols, silent);
  319.         position++;
  320.     }
  321.    
  322.     if (position >= cols * rows) {
  323.         position -= cols;
  324.         screen_scroll(silent);
  325.     }
  326.    
  327.     cursor_put(silent);
  328.    
  329.     spinlock_unlock(&fb_lock);
  330. }
  331.  
  332. static chardev_t framebuffer;
  333. static chardev_operations_t fb_ops = {
  334.     .write = fb_putchar,
  335. };
  336.  
  337.  
  338. /** Render glyphs
  339.  *
  340.  * Convert glyphs from device independent font
  341.  * description to current visual representation.
  342.  *
  343.  */
  344. static void glyphs_render(void)
  345. {
  346.     /* Prerender glyphs */
  347.     unsigned int glyph;
  348.    
  349.     for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
  350.         unsigned int y;
  351.        
  352.         for (y = 0; y < FONT_SCANLINES; y++) {
  353.             unsigned int x;
  354.            
  355.             for (x = 0; x < FONT_WIDTH; x++) {
  356.                 void *dst = &glyphs[GLYPH_POS(glyph, y) +
  357.                     x * pixelbytes];
  358.                 uint32_t rgb = (fb_font[ROW2Y(glyph) + y] &
  359.                     (1 << (7 - x))) ? FG_COLOR : BG_COLOR;
  360.                 rgb_conv(dst, rgb);
  361.             }
  362.         }
  363.     }
  364.    
  365.     /* Prerender background scanline */
  366.     unsigned int x;
  367.    
  368.     for (x = 0; x < xres; x++)
  369.         rgb_conv(&bgscan[x * pixelbytes], BG_COLOR);
  370. }
  371.  
  372.  
  373. /** Refresh the screen
  374.  *
  375.  */
  376. void fb_redraw(void)
  377. {
  378.     if (ylogo > 0) {
  379.         unsigned int y;
  380.        
  381.         for (y = 0; y < LOGO_HEIGHT; y++) {
  382.             unsigned int x;
  383.            
  384.             for (x = 0; x < xres; x++)
  385.                 rgb_conv(&fb_addr[FB_POS(x, y)],
  386.                     (x < LOGO_WIDTH) ?
  387.                     fb_logo[y * LOGO_WIDTH + x] :
  388.                     LOGO_COLOR);
  389.         }
  390.     }
  391.    
  392.     unsigned int row;
  393.    
  394.     for (row = 0; row < rowtrim; row++) {
  395.         unsigned int y = ylogo + ROW2Y(row);
  396.         unsigned int yd;
  397.        
  398.         for (yd = 0; yd < FONT_SCANLINES; yd++) {
  399.             unsigned int x;
  400.             unsigned int col;
  401.            
  402.             for (col = 0, x = 0; col < cols;
  403.                 col++, x += FONT_WIDTH) {
  404.                 void *d = &fb_addr[FB_POS(x, y + yd)];
  405.                 void *s = &glyphs[GLYPH_POS(backbuf[BB_POS(col,
  406.                     row)], yd)];
  407.                 memcpy(d, s, glyphscanline);
  408.             }
  409.         }
  410.     }
  411.    
  412.     if (COL2X(cols) < xres) {
  413.         unsigned int y;
  414.         unsigned int size = (xres - COL2X(cols)) * pixelbytes;
  415.        
  416.         for (y = ylogo; y < yres; y++)
  417.             memcpy(&fb_addr[FB_POS(COL2X(cols), y)], bgscan, size);
  418.     }
  419.    
  420.     if (ROW2Y(rowtrim) + ylogo < yres) {
  421.         unsigned int y;
  422.        
  423.         for (y = ROW2Y(rowtrim) + ylogo; y < yres; y++)
  424.             memcpy(&fb_addr[FB_POS(0, y)], bgscan, bgscanbytes);
  425.     }
  426. }
  427.  
  428.  
  429. /** Initialize framebuffer as a chardev output device
  430.  *
  431.  * @param addr   Physical address of the framebuffer
  432.  * @param x      Screen width in pixels
  433.  * @param y      Screen height in pixels
  434.  * @param scan   Bytes per one scanline
  435.  * @param visual Color model
  436.  *
  437.  */
  438. void fb_init(fb_properties_t *props)
  439. {
  440.     switch (props->visual) {
  441.     case VISUAL_INDIRECT_8:
  442.         rgb_conv = rgb_323;
  443.         pixelbytes = 1;
  444.         break;
  445.     case VISUAL_RGB_5_5_5:
  446.         rgb_conv = rgb_555;
  447.         pixelbytes = 2;
  448.         break;
  449.     case VISUAL_RGB_5_6_5:
  450.         rgb_conv = rgb_565;
  451.         pixelbytes = 2;
  452.         break;
  453.     case VISUAL_RGB_8_8_8:
  454.         rgb_conv = rgb_888;
  455.         pixelbytes = 3;
  456.         break;
  457.     case VISUAL_BGR_8_8_8:
  458.         rgb_conv = bgr_888;
  459.         pixelbytes = 3;
  460.         break;
  461.     case VISUAL_RGB_8_8_8_0:
  462.         rgb_conv = rgb_888;
  463.         pixelbytes = 4;
  464.         break;
  465.     case VISUAL_RGB_0_8_8_8:
  466.         rgb_conv = rgb_0888;
  467.         pixelbytes = 4;
  468.         break;
  469.     case VISUAL_BGR_0_8_8_8:
  470.         rgb_conv = bgr_0888;
  471.         pixelbytes = 4;
  472.         break;
  473.     default:
  474.         panic("Unsupported visual.");
  475.     }
  476.    
  477.     xres = props->x;
  478.     yres = props->y;
  479.     scanline = props->scan;
  480.    
  481.     cols = X2COL(xres);
  482.     rows = Y2ROW(yres);
  483.    
  484.     if (yres > ylogo) {
  485.         ylogo = LOGO_HEIGHT;
  486.         rowtrim = rows - Y2ROW(ylogo);
  487.         if (ylogo % FONT_SCANLINES > 0)
  488.             rowtrim--;
  489.         ytrim = ROW2Y(rowtrim);
  490.     } else {
  491.         ylogo = 0;
  492.         ytrim = yres;
  493.         rowtrim = rows;
  494.     }
  495.    
  496.     glyphscanline = FONT_WIDTH * pixelbytes;
  497.     glyphbytes = ROW2Y(glyphscanline);
  498.     bgscanbytes = xres * pixelbytes;
  499.    
  500.     unsigned int fbsize = scanline * yres;
  501.     unsigned int bbsize = cols * rows;
  502.     unsigned int glyphsize = FONT_GLYPHS * glyphbytes;
  503.    
  504.     backbuf = (uint8_t *) malloc(bbsize, 0);
  505.     if (!backbuf)
  506.         panic("Unable to allocate backbuffer.");
  507.    
  508.     glyphs = (uint8_t *) malloc(glyphsize, 0);
  509.     if (!glyphs)
  510.         panic("Unable to allocate glyphs.");
  511.    
  512.     bgscan = malloc(bgscanbytes, 0);
  513.     if (!bgscan)
  514.         panic("Unable to allocate background pixel.");
  515.    
  516.     memsetb(backbuf, bbsize, 0);
  517.    
  518.     glyphs_render();
  519.    
  520.     fb_addr = (uint8_t *) hw_map((uintptr_t) props->addr, fbsize);
  521.    
  522.     fb_parea.pbase = (uintptr_t) props->addr + props->offset;
  523.     fb_parea.vbase = (uintptr_t) fb_addr;
  524.     fb_parea.frames = SIZE2FRAMES(fbsize);
  525.     fb_parea.cacheable = false;
  526.     ddi_parea_register(&fb_parea);
  527.    
  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);
  532.     sysinfo_set_item_val("fb.scanline", NULL, scanline);
  533.     sysinfo_set_item_val("fb.visual", NULL, props->visual);
  534.     sysinfo_set_item_val("fb.address.physical", NULL, props->addr);
  535.    
  536.     fb_redraw();
  537.    
  538.     chardev_initialize("fb", &framebuffer, &fb_ops);
  539.     stdout = &framebuffer;
  540. }
  541.  
  542. /** @}
  543.  */
  544.