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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. static uint8_t *fb_addr;
  56. static uint8_t *backbuf;
  57. static uint8_t *glyphs;
  58. static uint8_t *bgscan;
  59.  
  60. static unsigned int xres;
  61. static unsigned int yres;
  62.  
  63. static unsigned int ylogo;
  64. static unsigned int ytrim;
  65. static unsigned int rowtrim;
  66.  
  67. static unsigned int scanline;
  68. static unsigned int glyphscanline;
  69.  
  70. static unsigned int pixelbytes;
  71. static unsigned int glyphbytes;
  72. static unsigned int bgscanbytes;
  73.  
  74. static unsigned int cols;
  75. static unsigned int rows;
  76. static unsigned int position = 0;
  77.  
  78. #define BG_COLOR     0x000080
  79. #define FG_COLOR     0xffff00
  80.  
  81. #define CURSOR       219
  82.  
  83. #define RED(x, bits)         ((x >> (8 + 8 + 8 - bits)) & ((1 << bits) - 1))
  84. #define GREEN(x, bits)       ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
  85. #define BLUE(x, bits)        ((x >> (8 - bits)) & ((1 << bits) - 1))
  86.  
  87. #define COL2X(col)           ((col) * FONT_WIDTH)
  88. #define ROW2Y(row)           ((row) * FONT_SCANLINES)
  89.  
  90. #define X2COL(x)             ((x) / FONT_WIDTH)
  91. #define Y2ROW(y)             ((y) / FONT_SCANLINES)
  92.  
  93. #define FB_POS(x, y)         ((y) * scanline + (x) * pixelbytes)
  94. #define BB_POS(col, row)     ((row) * cols + (col))
  95. #define GLYPH_POS(glyph, y)  ((glyph) * glyphbytes + (y) * glyphscanline)
  96.  
  97.  
  98. static void (*rgb_conv)(void *, uint32_t);
  99.  
  100.  
  101. /** ARGB 8:8:8:8 conversion
  102.  *
  103.  */
  104. static void rgb_0888(void *dst, uint32_t rgb)
  105. {
  106.     *((uint32_t *) dst) = rgb & 0xffffff;
  107. }
  108.  
  109.  
  110. /** ABGR 8:8:8:8 conversion
  111.  *
  112.  */
  113. static void bgr_0888(void *dst, uint32_t rgb)
  114. {
  115.     *((uint32_t *) dst)
  116.         = (BLUE(rgb, 8) << 16) | (GREEN(rgb, 8) << 8) | RED(rgb, 8);
  117. }
  118.  
  119.  
  120. /** RGB 8:8:8 conversion
  121.  *
  122.  */
  123. static void rgb_888(void *dst, uint32_t rgb)
  124. {
  125.     ((uint8_t *) dst)[0] = BLUE(rgb, 8);
  126.     ((uint8_t *) dst)[1] = GREEN(rgb, 8);
  127.     ((uint8_t *) dst)[2] = RED(rgb, 8);
  128. }
  129.  
  130.  
  131. /** BGR 8:8:8 conversion
  132.  *
  133.  */
  134. static void bgr_888(void *dst, uint32_t rgb)
  135. {
  136.     ((uint8_t *) dst)[0] = RED(rgb, 8);
  137.     ((uint8_t *) dst)[1] = GREEN(rgb, 8);
  138.     ((uint8_t *) dst)[2] = BLUE(rgb, 8);
  139. }
  140.  
  141.  
  142. /** RGB 5:5:5 conversion
  143.  *
  144.  */
  145. static void rgb_555(void *dst, uint32_t rgb)
  146. {
  147.     *((uint16_t *) dst)
  148.         = (RED(rgb, 5) << 10) | (GREEN(rgb, 5) << 5) | BLUE(rgb, 5);
  149. }
  150.  
  151.  
  152. /** RGB 5:6:5 conversion
  153.  *
  154.  */
  155. static void rgb_565(void *dst, uint32_t rgb)
  156. {
  157.     *((uint16_t *) dst)
  158.         = (RED(rgb, 5) << 11) | (GREEN(rgb, 6) << 5) | BLUE(rgb, 5);
  159. }
  160.  
  161.  
  162. /** RGB 3:2:3
  163.  *
  164.  * Even though we try 3:2:3 color scheme here, an 8-bit framebuffer
  165.  * will most likely use a color palette. The color appearance
  166.  * will be pretty random and depend on the default installed
  167.  * palette. This could be fixed by supporting custom palette
  168.  * and setting it to simulate the 8-bit truecolor.
  169.  *
  170.  * Currently we set the palette on the ia32, amd64 and sparc64 port.
  171.  *
  172.  * Note that the byte is being inverted by this function. The reason is
  173.  * that we would like to use a color palette where the white color code
  174.  * is 0 and the black color code is 255, as some machines (Sun Blade 1500)
  175.  * use these codes for black and white and prevent to set codes
  176.  * 0 and 255 to other colors.
  177.  *
  178.  */
  179. static void rgb_323(void *dst, uint32_t rgb)
  180. {
  181.     *((uint8_t *) dst)
  182.         = ~((RED(rgb, 3) << 5) | (GREEN(rgb, 2) << 3) | BLUE(rgb, 3));
  183. }
  184.  
  185.  
  186. /** Hide logo and refresh screen
  187.  *
  188.  */
  189. static void logo_hide(bool silent)
  190. {
  191.     ylogo = 0;
  192.     ytrim = yres;
  193.     rowtrim = rows;
  194.     if (!silent)
  195.         fb_redraw();
  196. }
  197.  
  198.  
  199. /** Draw character at given position
  200.  *
  201.  */
  202. static void glyph_draw(uint8_t glyph, unsigned int col, unsigned int row, bool silent)
  203. {
  204.     unsigned int x = COL2X(col);
  205.     unsigned int y = ROW2Y(row);
  206.     unsigned int yd;
  207.    
  208.     if (y >= ytrim)
  209.         logo_hide(silent);
  210.    
  211.     backbuf[BB_POS(col, row)] = glyph;
  212.    
  213.     if (!silent) {
  214.         for (yd = 0; yd < FONT_SCANLINES; yd++)
  215.             memcpy(&fb_addr[FB_POS(x, y + yd + ylogo)],
  216.                 &glyphs[GLYPH_POS(glyph, yd)], glyphscanline);
  217.     }
  218. }
  219.  
  220.  
  221. /** Scroll screen down by one row
  222.  *
  223.  *
  224.  */
  225. static void screen_scroll(bool silent)
  226. {
  227.     if (ylogo > 0) {
  228.         logo_hide(silent);
  229.         return;
  230.     }
  231.    
  232.     if (!silent) {
  233.         unsigned int row;
  234.        
  235.         for (row = 0; row < rows; row++) {
  236.             unsigned int y = ROW2Y(row);
  237.             unsigned int yd;
  238.            
  239.             for (yd = 0; yd < FONT_SCANLINES; yd++) {
  240.                 unsigned int x;
  241.                 unsigned int col;
  242.                
  243.                 for (col = 0, x = 0; col < cols; col++,
  244.                     x += FONT_WIDTH) {
  245.                     uint8_t glyph;
  246.                    
  247.                     if (row < rows - 1) {
  248.                         if (backbuf[BB_POS(col, row)] ==
  249.                             backbuf[BB_POS(col, row + 1)])
  250.                             continue;
  251.                        
  252.                         glyph = backbuf[BB_POS(col, row + 1)];
  253.                     } else
  254.                         glyph = 0;
  255.                    
  256.                     memcpy(&fb_addr[FB_POS(x, y + yd)],
  257.                         &glyphs[GLYPH_POS(glyph, yd)],
  258.                         glyphscanline);
  259.                 }
  260.             }
  261.         }
  262.     }
  263.    
  264.     memmove(backbuf, backbuf + cols, cols * (rows - 1));
  265.     memsetb(&backbuf[BB_POS(0, rows - 1)], cols, 0);
  266. }
  267.  
  268.  
  269. static void cursor_put(bool silent)
  270. {
  271.     glyph_draw(CURSOR, position % cols, position / cols, silent);
  272. }
  273.  
  274.  
  275. static void cursor_remove(bool silent)
  276. {
  277.     glyph_draw(0, position % cols, position / cols, silent);
  278. }
  279.  
  280.  
  281. /** Print character to screen
  282.  *
  283.  * Emulate basic terminal commands.
  284.  *
  285.  */
  286. static void fb_putchar(outdev_t *dev, char ch, bool silent)
  287. {
  288.     spinlock_lock(&fb_lock);
  289.    
  290.     switch (ch) {
  291.     case '\n':
  292.         cursor_remove(silent);
  293.         position += cols;
  294.         position -= position % cols;
  295.         break;
  296.     case '\r':
  297.         cursor_remove(silent);
  298.         position -= position % cols;
  299.         break;
  300.     case '\b':
  301.         cursor_remove(silent);
  302.         if (position % cols)
  303.             position--;
  304.         break;
  305.     case '\t':
  306.         cursor_remove(silent);
  307.         do {
  308.             glyph_draw((uint8_t) ' ', position % cols,
  309.                 position / cols, silent);
  310.             position++;
  311.         } while ((position % 8) && (position < cols * rows));
  312.         break;
  313.     default:
  314.         glyph_draw((uint8_t) ch, position % cols,
  315.             position / cols, silent);
  316.         position++;
  317.     }
  318.    
  319.     if (position >= cols * rows) {
  320.         position -= cols;
  321.         screen_scroll(silent);
  322.     }
  323.    
  324.     cursor_put(silent);
  325.    
  326.     spinlock_unlock(&fb_lock);
  327. }
  328.  
  329. static outdev_t fb_console;
  330. static outdev_operations_t fb_ops = {
  331.     .write = fb_putchar
  332. };
  333.  
  334.  
  335. /** Render glyphs
  336.  *
  337.  * Convert glyphs from device independent font
  338.  * description to current visual representation.
  339.  *
  340.  */
  341. static void glyphs_render(void)
  342. {
  343.     /* Prerender glyphs */
  344.     unsigned int glyph;
  345.    
  346.     for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
  347.         unsigned int y;
  348.        
  349.         for (y = 0; y < FONT_SCANLINES; y++) {
  350.             unsigned int x;
  351.            
  352.             for (x = 0; x < FONT_WIDTH; x++) {
  353.                 void *dst = &glyphs[GLYPH_POS(glyph, y) +
  354.                     x * pixelbytes];
  355.                 uint32_t rgb = (fb_font[ROW2Y(glyph) + y] &
  356.                     (1 << (7 - x))) ? FG_COLOR : BG_COLOR;
  357.                 rgb_conv(dst, rgb);
  358.             }
  359.         }
  360.     }
  361.    
  362.     /* Prerender background scanline */
  363.     unsigned int x;
  364.    
  365.     for (x = 0; x < xres; x++)
  366.         rgb_conv(&bgscan[x * pixelbytes], BG_COLOR);
  367. }
  368.  
  369.  
  370. /** Refresh the screen
  371.  *
  372.  */
  373. void fb_redraw(void)
  374. {
  375.     if (ylogo > 0) {
  376.         unsigned int y;
  377.        
  378.         for (y = 0; y < LOGO_HEIGHT; y++) {
  379.             unsigned int x;
  380.            
  381.             for (x = 0; x < xres; x++)
  382.                 rgb_conv(&fb_addr[FB_POS(x, y)],
  383.                     (x < LOGO_WIDTH) ?
  384.                     fb_logo[y * LOGO_WIDTH + x] :
  385.                     LOGO_COLOR);
  386.         }
  387.     }
  388.    
  389.     unsigned int row;
  390.    
  391.     for (row = 0; row < rowtrim; row++) {
  392.         unsigned int y = ylogo + ROW2Y(row);
  393.         unsigned int yd;
  394.        
  395.         for (yd = 0; yd < FONT_SCANLINES; yd++) {
  396.             unsigned int x;
  397.             unsigned int col;
  398.            
  399.             for (col = 0, x = 0; col < cols;
  400.                 col++, x += FONT_WIDTH) {
  401.                 void *d = &fb_addr[FB_POS(x, y + yd)];
  402.                 void *s = &glyphs[GLYPH_POS(backbuf[BB_POS(col,
  403.                     row)], yd)];
  404.                 memcpy(d, s, glyphscanline);
  405.             }
  406.         }
  407.     }
  408.    
  409.     if (COL2X(cols) < xres) {
  410.         unsigned int y;
  411.         unsigned int size = (xres - COL2X(cols)) * pixelbytes;
  412.        
  413.         for (y = ylogo; y < yres; y++)
  414.             memcpy(&fb_addr[FB_POS(COL2X(cols), y)], bgscan, size);
  415.     }
  416.    
  417.     if (ROW2Y(rowtrim) + ylogo < yres) {
  418.         unsigned int y;
  419.        
  420.         for (y = ROW2Y(rowtrim) + ylogo; y < yres; y++)
  421.             memcpy(&fb_addr[FB_POS(0, y)], bgscan, bgscanbytes);
  422.     }
  423. }
  424.  
  425.  
  426. /** Initialize framebuffer as a output character device
  427.  *
  428.  * @param addr   Physical address of the framebuffer
  429.  * @param x      Screen width in pixels
  430.  * @param y      Screen height in pixels
  431.  * @param scan   Bytes per one scanline
  432.  * @param visual Color model
  433.  *
  434.  */
  435. void fb_init(fb_properties_t *props)
  436. {
  437.     switch (props->visual) {
  438.     case VISUAL_INDIRECT_8:
  439.         rgb_conv = rgb_323;
  440.         pixelbytes = 1;
  441.         break;
  442.     case VISUAL_RGB_5_5_5:
  443.         rgb_conv = rgb_555;
  444.         pixelbytes = 2;
  445.         break;
  446.     case VISUAL_RGB_5_6_5:
  447.         rgb_conv = rgb_565;
  448.         pixelbytes = 2;
  449.         break;
  450.     case VISUAL_RGB_8_8_8:
  451.         rgb_conv = rgb_888;
  452.         pixelbytes = 3;
  453.         break;
  454.     case VISUAL_BGR_8_8_8:
  455.         rgb_conv = bgr_888;
  456.         pixelbytes = 3;
  457.         break;
  458.     case VISUAL_RGB_8_8_8_0:
  459.         rgb_conv = rgb_888;
  460.         pixelbytes = 4;
  461.         break;
  462.     case VISUAL_RGB_0_8_8_8:
  463.         rgb_conv = rgb_0888;
  464.         pixelbytes = 4;
  465.         break;
  466.     case VISUAL_BGR_0_8_8_8:
  467.         rgb_conv = bgr_0888;
  468.         pixelbytes = 4;
  469.         break;
  470.     default:
  471.         panic("Unsupported visual.");
  472.     }
  473.    
  474.     xres = props->x;
  475.     yres = props->y;
  476.     scanline = props->scan;
  477.    
  478.     cols = X2COL(xres);
  479.     rows = Y2ROW(yres);
  480.    
  481.     if (yres > ylogo) {
  482.         ylogo = LOGO_HEIGHT;
  483.         rowtrim = rows - Y2ROW(ylogo);
  484.         if (ylogo % FONT_SCANLINES > 0)
  485.             rowtrim--;
  486.         ytrim = ROW2Y(rowtrim);
  487.     } else {
  488.         ylogo = 0;
  489.         ytrim = yres;
  490.         rowtrim = rows;
  491.     }
  492.    
  493.     glyphscanline = FONT_WIDTH * pixelbytes;
  494.     glyphbytes = ROW2Y(glyphscanline);
  495.     bgscanbytes = xres * pixelbytes;
  496.    
  497.     unsigned int fbsize = scanline * yres;
  498.     unsigned int bbsize = cols * rows;
  499.     unsigned int glyphsize = FONT_GLYPHS * glyphbytes;
  500.    
  501.     backbuf = (uint8_t *) malloc(bbsize, 0);
  502.     if (!backbuf)
  503.         panic("Unable to allocate backbuffer.");
  504.    
  505.     glyphs = (uint8_t *) malloc(glyphsize, 0);
  506.     if (!glyphs)
  507.         panic("Unable to allocate glyphs.");
  508.    
  509.     bgscan = malloc(bgscanbytes, 0);
  510.     if (!bgscan)
  511.         panic("Unable to allocate background pixel.");
  512.    
  513.     memsetb(backbuf, bbsize, 0);
  514.    
  515.     glyphs_render();
  516.    
  517.     fb_addr = (uint8_t *) hw_map((uintptr_t) props->addr, fbsize);
  518.    
  519.     sysinfo_set_item_val("fb", NULL, true);
  520.     sysinfo_set_item_val("fb.kind", NULL, 1);
  521.     sysinfo_set_item_val("fb.width", NULL, xres);
  522.     sysinfo_set_item_val("fb.height", NULL, yres);
  523.     sysinfo_set_item_val("fb.scanline", NULL, scanline);
  524.     sysinfo_set_item_val("fb.visual", NULL, props->visual);
  525.     sysinfo_set_item_val("fb.address.physical", NULL, props->addr);
  526.    
  527.     fb_redraw();
  528.    
  529.     outdev_initialize("fb", &fb_console, &fb_ops);
  530.     stdout = &fb_console;
  531. }
  532.  
  533. /** @}
  534.  */
  535.