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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 <string.h>
  51. #include <ddi/ddi.h>
  52. #include <arch/types.h>
  53.  
  54. SPINLOCK_INITIALIZE(fb_lock);
  55.  
  56. static uint8_t *fb_addr;
  57. static uint16_t *backbuf;
  58. static uint8_t *glyphs;
  59. static uint8_t *bgscan;
  60.  
  61. static unsigned int xres;
  62. static unsigned int yres;
  63.  
  64. static unsigned int ylogo;
  65. static unsigned int ytrim;
  66. static unsigned int rowtrim;
  67.  
  68. static unsigned int scanline;
  69. static unsigned int glyphscanline;
  70.  
  71. static unsigned int pixelbytes;
  72. static unsigned int glyphbytes;
  73. static unsigned int bgscanbytes;
  74.  
  75. static unsigned int cols;
  76. static unsigned int rows;
  77. static unsigned int position = 0;
  78.  
  79. #define BG_COLOR     0x000080
  80. #define FG_COLOR     0xffff00
  81. #define INV_COLOR    0xaaaaaa
  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(uint16_t glyph, unsigned int col, unsigned int row, bool silent, bool overlay)
  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.     if (!overlay)
  212.         backbuf[BB_POS(col, row)] = glyph;
  213.    
  214.     if (!silent) {
  215.         for (yd = 0; yd < FONT_SCANLINES; yd++)
  216.             memcpy(&fb_addr[FB_POS(x, y + yd + ylogo)],
  217.                 &glyphs[GLYPH_POS(glyph, yd)], glyphscanline);
  218.     }
  219. }
  220.  
  221.  
  222. /** Scroll screen down by one row
  223.  *
  224.  *
  225.  */
  226. static void screen_scroll(bool silent)
  227. {
  228.     if (ylogo > 0) {
  229.         logo_hide(silent);
  230.         return;
  231.     }
  232.    
  233.     if (!silent) {
  234.         unsigned int row;
  235.        
  236.         for (row = 0; row < rows; row++) {
  237.             unsigned int y = ROW2Y(row);
  238.             unsigned int yd;
  239.            
  240.             for (yd = 0; yd < FONT_SCANLINES; yd++) {
  241.                 unsigned int x;
  242.                 unsigned int col;
  243.                
  244.                 for (col = 0, x = 0; col < cols; col++,
  245.                     x += FONT_WIDTH) {
  246.                     uint16_t glyph;
  247.                    
  248.                     if (row < rows - 1) {
  249.                         if (backbuf[BB_POS(col, row)] ==
  250.                             backbuf[BB_POS(col, row + 1)])
  251.                             continue;
  252.                        
  253.                         glyph = backbuf[BB_POS(col, row + 1)];
  254.                     } else
  255.                         glyph = 0;
  256.                    
  257.                     memcpy(&fb_addr[FB_POS(x, y + yd)],
  258.                         &glyphs[GLYPH_POS(glyph, yd)],
  259.                         glyphscanline);
  260.                 }
  261.             }
  262.         }
  263.     }
  264.    
  265.     memmove(backbuf, &backbuf[BB_POS(0, 1)], cols * (rows - 1) * sizeof(uint16_t));
  266.     memsetw(&backbuf[BB_POS(0, rows - 1)], cols, 0);
  267. }
  268.  
  269.  
  270. static void cursor_put(bool silent)
  271. {
  272.     unsigned int col = position % cols;
  273.     unsigned int row = position / cols;
  274.    
  275.     glyph_draw(fb_font_glyph(U_CURSOR), col, row, silent, true);
  276. }
  277.  
  278.  
  279. static void cursor_remove(bool silent)
  280. {
  281.     unsigned int col = position % cols;
  282.     unsigned int row = position / cols;
  283.    
  284.     glyph_draw(backbuf[BB_POS(col, row)], col, row, silent, true);
  285. }
  286.  
  287.  
  288. /** Print character to screen
  289.  *
  290.  * Emulate basic terminal commands.
  291.  *
  292.  */
  293. static void fb_putchar(outdev_t *dev, wchar_t ch, bool silent)
  294. {
  295.     spinlock_lock(&fb_lock);
  296.    
  297.     switch (ch) {
  298.     case '\n':
  299.         cursor_remove(silent);
  300.         position += cols;
  301.         position -= position % cols;
  302.         break;
  303.     case '\r':
  304.         cursor_remove(silent);
  305.         position -= position % cols;
  306.         break;
  307.     case '\b':
  308.         cursor_remove(silent);
  309.         if (position % cols)
  310.             position--;
  311.         break;
  312.     case '\t':
  313.         cursor_remove(silent);
  314.         do {
  315.             glyph_draw(fb_font_glyph(' '), position % cols,
  316.                 position / cols, silent, false);
  317.             position++;
  318.         } while ((position % 8) && (position < cols * rows));
  319.         break;
  320.     default:
  321.         glyph_draw(fb_font_glyph(ch), position % cols,
  322.             position / cols, silent, false);
  323.         position++;
  324.     }
  325.    
  326.     if (position >= cols * rows) {
  327.         position -= cols;
  328.         screen_scroll(silent);
  329.     }
  330.    
  331.     cursor_put(silent);
  332.    
  333.     spinlock_unlock(&fb_lock);
  334. }
  335.  
  336. static outdev_t fb_console;
  337. static outdev_operations_t fb_ops = {
  338.     .write = fb_putchar
  339. };
  340.  
  341.  
  342. /** Render glyphs
  343.  *
  344.  * Convert glyphs from device independent font
  345.  * description to current visual representation.
  346.  *
  347.  */
  348. static void glyphs_render(void)
  349. {
  350.     /* Prerender glyphs */
  351.     uint16_t glyph;
  352.    
  353.     for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
  354.         uint32_t fg_color;
  355.        
  356.         if (glyph == FONT_GLYPHS - 1)
  357.             fg_color = INV_COLOR;
  358.         else
  359.             fg_color = FG_COLOR;
  360.        
  361.         unsigned int y;
  362.        
  363.         for (y = 0; y < FONT_SCANLINES; y++) {
  364.             unsigned int x;
  365.            
  366.             for (x = 0; x < FONT_WIDTH; x++) {
  367.                 void *dst = &glyphs[GLYPH_POS(glyph, y) +
  368.                     x * pixelbytes];
  369.                 uint32_t rgb = (fb_font[glyph][y] &
  370.                     (1 << (7 - x))) ? fg_color : BG_COLOR;
  371.                 rgb_conv(dst, rgb);
  372.             }
  373.         }
  374.     }
  375.    
  376.     /* Prerender background scanline */
  377.     unsigned int x;
  378.    
  379.     for (x = 0; x < xres; x++)
  380.         rgb_conv(&bgscan[x * pixelbytes], BG_COLOR);
  381. }
  382.  
  383.  
  384. /** Refresh the screen
  385.  *
  386.  */
  387. void fb_redraw(void)
  388. {
  389.     if (ylogo > 0) {
  390.         unsigned int y;
  391.        
  392.         for (y = 0; y < LOGO_HEIGHT; y++) {
  393.             unsigned int x;
  394.            
  395.             for (x = 0; x < xres; x++)
  396.                 rgb_conv(&fb_addr[FB_POS(x, y)],
  397.                     (x < LOGO_WIDTH) ?
  398.                     fb_logo[y * LOGO_WIDTH + x] :
  399.                     LOGO_COLOR);
  400.         }
  401.     }
  402.    
  403.     unsigned int row;
  404.    
  405.     for (row = 0; row < rowtrim; row++) {
  406.         unsigned int y = ylogo + ROW2Y(row);
  407.         unsigned int yd;
  408.        
  409.         for (yd = 0; yd < FONT_SCANLINES; yd++) {
  410.             unsigned int x;
  411.             unsigned int col;
  412.            
  413.             for (col = 0, x = 0; col < cols;
  414.                 col++, x += FONT_WIDTH) {
  415.                 uint16_t glyph = backbuf[BB_POS(col, row)];
  416.                 void *dst = &fb_addr[FB_POS(x, y + yd)];
  417.                 void *src = &glyphs[GLYPH_POS(glyph, yd)];
  418.                 memcpy(dst, src, glyphscanline);
  419.             }
  420.         }
  421.     }
  422.    
  423.     if (COL2X(cols) < xres) {
  424.         unsigned int y;
  425.         unsigned int size = (xres - COL2X(cols)) * pixelbytes;
  426.        
  427.         for (y = ylogo; y < yres; y++)
  428.             memcpy(&fb_addr[FB_POS(COL2X(cols), y)], bgscan, size);
  429.     }
  430.    
  431.     if (ROW2Y(rowtrim) + ylogo < yres) {
  432.         unsigned int y;
  433.        
  434.         for (y = ROW2Y(rowtrim) + ylogo; y < yres; y++)
  435.             memcpy(&fb_addr[FB_POS(0, y)], bgscan, bgscanbytes);
  436.     }
  437. }
  438.  
  439.  
  440. /** Initialize framebuffer as a output character device
  441.  *
  442.  * @param addr   Physical address of the framebuffer
  443.  * @param x      Screen width in pixels
  444.  * @param y      Screen height in pixels
  445.  * @param scan   Bytes per one scanline
  446.  * @param visual Color model
  447.  *
  448.  */
  449. void fb_init(fb_properties_t *props)
  450. {
  451.     switch (props->visual) {
  452.     case VISUAL_INDIRECT_8:
  453.         rgb_conv = rgb_323;
  454.         pixelbytes = 1;
  455.         break;
  456.     case VISUAL_RGB_5_5_5:
  457.         rgb_conv = rgb_555;
  458.         pixelbytes = 2;
  459.         break;
  460.     case VISUAL_RGB_5_6_5:
  461.         rgb_conv = rgb_565;
  462.         pixelbytes = 2;
  463.         break;
  464.     case VISUAL_RGB_8_8_8:
  465.         rgb_conv = rgb_888;
  466.         pixelbytes = 3;
  467.         break;
  468.     case VISUAL_BGR_8_8_8:
  469.         rgb_conv = bgr_888;
  470.         pixelbytes = 3;
  471.         break;
  472.     case VISUAL_RGB_8_8_8_0:
  473.         rgb_conv = rgb_888;
  474.         pixelbytes = 4;
  475.         break;
  476.     case VISUAL_RGB_0_8_8_8:
  477.         rgb_conv = rgb_0888;
  478.         pixelbytes = 4;
  479.         break;
  480.     case VISUAL_BGR_0_8_8_8:
  481.         rgb_conv = bgr_0888;
  482.         pixelbytes = 4;
  483.         break;
  484.     default:
  485.         panic("Unsupported visual.");
  486.     }
  487.    
  488.     xres = props->x;
  489.     yres = props->y;
  490.     scanline = props->scan;
  491.    
  492.     cols = X2COL(xres);
  493.     rows = Y2ROW(yres);
  494.    
  495.     if (yres > ylogo) {
  496.         ylogo = LOGO_HEIGHT;
  497.         rowtrim = rows - Y2ROW(ylogo);
  498.         if (ylogo % FONT_SCANLINES > 0)
  499.             rowtrim--;
  500.         ytrim = ROW2Y(rowtrim);
  501.     } else {
  502.         ylogo = 0;
  503.         ytrim = yres;
  504.         rowtrim = rows;
  505.     }
  506.    
  507.     glyphscanline = FONT_WIDTH * pixelbytes;
  508.     glyphbytes = ROW2Y(glyphscanline);
  509.     bgscanbytes = xres * pixelbytes;
  510.    
  511.     size_t fbsize = scanline * yres;
  512.     size_t bbsize = cols * rows * sizeof(uint16_t);
  513.     size_t glyphsize = FONT_GLYPHS * glyphbytes;
  514.    
  515.     backbuf = (uint16_t *) malloc(bbsize, 0);
  516.     if (!backbuf)
  517.         panic("Unable to allocate backbuffer.");
  518.    
  519.     glyphs = (uint8_t *) malloc(glyphsize, 0);
  520.     if (!glyphs)
  521.         panic("Unable to allocate glyphs.");
  522.    
  523.     bgscan = malloc(bgscanbytes, 0);
  524.     if (!bgscan)
  525.         panic("Unable to allocate background pixel.");
  526.    
  527.     memsetw(backbuf, cols * rows, 0);
  528.    
  529.     glyphs_render();
  530.    
  531.     fb_addr = (uint8_t *) hw_map((uintptr_t) props->addr, fbsize);
  532.    
  533.     sysinfo_set_item_val("fb", NULL, true);
  534.     sysinfo_set_item_val("fb.kind", NULL, 1);
  535.     sysinfo_set_item_val("fb.width", NULL, xres);
  536.     sysinfo_set_item_val("fb.height", NULL, yres);
  537.     sysinfo_set_item_val("fb.scanline", NULL, scanline);
  538.     sysinfo_set_item_val("fb.visual", NULL, props->visual);
  539.     sysinfo_set_item_val("fb.address.physical", NULL, props->addr);
  540.    
  541.     fb_redraw();
  542.    
  543.     outdev_initialize("fb", &fb_console, &fb_ops);
  544.     stdout = &fb_console;
  545. }
  546.  
  547. /** @}
  548.  */
  549.