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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. #include <byteorder.h>
  54.  
  55. SPINLOCK_INITIALIZE(fb_lock);
  56.  
  57. static uint8_t *fb_addr;
  58. static uint16_t *backbuf;
  59. static uint8_t *glyphs;
  60. static uint8_t *bgscan;
  61.  
  62. static unsigned int xres;
  63. static unsigned int yres;
  64.  
  65. static unsigned int ylogo;
  66. static unsigned int ytrim;
  67. static unsigned int rowtrim;
  68.  
  69. static unsigned int scanline;
  70. static unsigned int glyphscanline;
  71.  
  72. static unsigned int pixelbytes;
  73. static unsigned int glyphbytes;
  74. static unsigned int bgscanbytes;
  75.  
  76. static unsigned int cols;
  77. static unsigned int rows;
  78. static unsigned int position = 0;
  79.  
  80. #define BG_COLOR     0x000080
  81. #define FG_COLOR     0xffff00
  82. #define INV_COLOR    0xaaaaaa
  83.  
  84. #define RED(x, bits)         (((x) >> (8 + 8 + 8 - (bits))) & ((1 << (bits)) - 1))
  85. #define GREEN(x, bits)       (((x) >> (8 + 8 - (bits))) & ((1 << (bits)) - 1))
  86. #define BLUE(x, bits)        (((x) >> (8 - (bits))) & ((1 << (bits)) - 1))
  87.  
  88. #define COL2X(col)           ((col) * FONT_WIDTH)
  89. #define ROW2Y(row)           ((row) * FONT_SCANLINES)
  90.  
  91. #define X2COL(x)             ((x) / FONT_WIDTH)
  92. #define Y2ROW(y)             ((y) / FONT_SCANLINES)
  93.  
  94. #define FB_POS(x, y)         ((y) * scanline + (x) * pixelbytes)
  95. #define BB_POS(col, row)     ((row) * cols + (col))
  96. #define GLYPH_POS(glyph, y)  ((glyph) * glyphbytes + (y) * glyphscanline)
  97.  
  98.  
  99. static void (*rgb_conv)(void *, uint32_t);
  100.  
  101. /*
  102.  * RGB conversion functions.
  103.  *
  104.  * These functions write an RGB value to some memory in some predefined format.
  105.  * The naming convention corresponds to the format created by these functions.
  106.  * The functions use the so called network order (i.e. big endian) with respect
  107.  * to their names.
  108.  */
  109.  
  110. static void rgb_0888(void *dst, uint32_t rgb)
  111. {
  112.     *((uint32_t *) dst) = host2uint32_t_be((0 << 24) |
  113.         (RED(rgb, 8) << 16) | (GREEN(rgb, 8) << 8) | (BLUE(rgb, 8)));
  114. }
  115.  
  116. static void bgr_0888(void *dst, uint32_t rgb)
  117. {
  118.     *((uint32_t *) dst) = host2uint32_t_be((0 << 24) |
  119.         (BLUE(rgb, 8) << 16) | (GREEN(rgb, 8) << 8) | (RED(rgb, 8)));
  120. }
  121.  
  122. static void rgb_8880(void *dst, uint32_t rgb)
  123. {
  124.     *((uint32_t *) dst) = host2uint32_t_be((RED(rgb, 8) << 24) |
  125.         (GREEN(rgb, 8) << 16) | (BLUE(rgb, 8) << 8) | 0);
  126. }
  127.  
  128. static void bgr_8880(void *dst, uint32_t rgb)
  129. {
  130.     *((uint32_t *) dst) = host2uint32_t_be((BLUE(rgb, 8) << 24) |
  131.         (GREEN(rgb, 8) << 16) | (RED(rgb, 8) << 8) | 0);
  132. }
  133.  
  134. static void rgb_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. static void bgr_888(void *dst, uint32_t rgb)
  142. {
  143.     ((uint8_t *) dst)[0] = BLUE(rgb, 8);
  144.     ((uint8_t *) dst)[1] = GREEN(rgb, 8);
  145.     ((uint8_t *) dst)[2] = RED(rgb, 8);
  146. }
  147.  
  148. static void bgr_555(void *dst, uint32_t rgb)
  149. {
  150.     uint8_t hi = (BLUE(rgb, 5) | (GREEN(rgb, 5) << 5)) & 0xff;
  151.     uint8_t lo = (GREEN(rgb, 5) >> 3) | (RED(rgb, 5) << 2);
  152.     *((uint16_t *) dst) = host2uint16_t_be((hi << 8) | lo);
  153. }
  154.  
  155. static void bgr_565(void *dst, uint32_t rgb)
  156. {
  157.     uint8_t hi = (BLUE(rgb, 5) | (GREEN(rgb, 6) << 5)) & 0xff;
  158.     uint8_t lo = (GREEN(rgb, 6) >> 3) | (RED(rgb, 5) << 3);
  159.     *((uint16_t *) dst) = host2uint16_t_be((hi << 8) | lo);
  160. }
  161.  
  162.  
  163. /** BGR 3:2:3
  164.  *
  165.  * Even though we try 3:2:3 color scheme here, an 8-bit framebuffer
  166.  * will most likely use a color palette. The color appearance
  167.  * will be pretty random and depend on the default installed
  168.  * palette. This could be fixed by supporting custom palette
  169.  * and setting it to simulate the 8-bit truecolor.
  170.  *
  171.  * Currently we set the palette on the ia32, amd64 and sparc64 port.
  172.  *
  173.  * Note that the byte is being inverted by this function. The reason is
  174.  * that we would like to use a color palette where the white color code
  175.  * is 0 and the black color code is 255, as some machines (Sun Blade 1500)
  176.  * use these codes for black and white and prevent to set codes
  177.  * 0 and 255 to other colors.
  178.  *
  179.  */
  180. static void bgr_323(void *dst, uint32_t rgb)
  181. {
  182.     *((uint8_t *) dst)
  183.         = ~((RED(rgb, 3) << 5) | (GREEN(rgb, 2) << 3) | BLUE(rgb, 3));
  184. }
  185.  
  186.  
  187. /** Hide logo and refresh screen
  188.  *
  189.  */
  190. static void logo_hide(bool silent)
  191. {
  192.     ylogo = 0;
  193.     ytrim = yres;
  194.     rowtrim = rows;
  195.     if (!silent)
  196.         fb_redraw();
  197. }
  198.  
  199.  
  200. /** Draw character at given position
  201.  *
  202.  */
  203. static void glyph_draw(uint16_t glyph, unsigned int col, unsigned int row, bool silent, bool overlay)
  204. {
  205.     unsigned int x = COL2X(col);
  206.     unsigned int y = ROW2Y(row);
  207.     unsigned int yd;
  208.    
  209.     if (y >= ytrim)
  210.         logo_hide(silent);
  211.    
  212.     if (!overlay)
  213.         backbuf[BB_POS(col, row)] = glyph;
  214.    
  215.     if (!silent) {
  216.         for (yd = 0; yd < FONT_SCANLINES; yd++)
  217.             memcpy(&fb_addr[FB_POS(x, y + yd + ylogo)],
  218.                 &glyphs[GLYPH_POS(glyph, yd)], glyphscanline);
  219.     }
  220. }
  221.  
  222.  
  223. /** Scroll screen down by one row
  224.  *
  225.  *
  226.  */
  227. static void screen_scroll(bool silent)
  228. {
  229.     if (ylogo > 0) {
  230.         logo_hide(silent);
  231.         return;
  232.     }
  233.    
  234.     if (!silent) {
  235.         unsigned int row;
  236.        
  237.         for (row = 0; row < rows; row++) {
  238.             unsigned int y = ROW2Y(row);
  239.             unsigned int yd;
  240.            
  241.             for (yd = 0; yd < FONT_SCANLINES; yd++) {
  242.                 unsigned int x;
  243.                 unsigned int col;
  244.                
  245.                 for (col = 0, x = 0; col < cols; col++,
  246.                     x += FONT_WIDTH) {
  247.                     uint16_t glyph;
  248.                    
  249.                     if (row < rows - 1) {
  250.                         if (backbuf[BB_POS(col, row)] ==
  251.                             backbuf[BB_POS(col, row + 1)])
  252.                             continue;
  253.                        
  254.                         glyph = backbuf[BB_POS(col, row + 1)];
  255.                     } else
  256.                         glyph = 0;
  257.                    
  258.                     memcpy(&fb_addr[FB_POS(x, y + yd)],
  259.                         &glyphs[GLYPH_POS(glyph, yd)],
  260.                         glyphscanline);
  261.                 }
  262.             }
  263.         }
  264.     }
  265.    
  266.     memmove(backbuf, &backbuf[BB_POS(0, 1)], cols * (rows - 1) * sizeof(uint16_t));
  267.     memsetw(&backbuf[BB_POS(0, rows - 1)], cols, 0);
  268. }
  269.  
  270.  
  271. static void cursor_put(bool silent)
  272. {
  273.     unsigned int col = position % cols;
  274.     unsigned int row = position / cols;
  275.    
  276.     glyph_draw(fb_font_glyph(U_CURSOR), col, row, silent, true);
  277. }
  278.  
  279.  
  280. static void cursor_remove(bool silent)
  281. {
  282.     unsigned int col = position % cols;
  283.     unsigned int row = position / cols;
  284.    
  285.     glyph_draw(backbuf[BB_POS(col, row)], col, row, silent, true);
  286. }
  287.  
  288.  
  289. /** Print character to screen
  290.  *
  291.  * Emulate basic terminal commands.
  292.  *
  293.  */
  294. static void fb_putchar(outdev_t *dev, wchar_t ch, bool silent)
  295. {
  296.     spinlock_lock(&fb_lock);
  297.    
  298.     switch (ch) {
  299.     case '\n':
  300.         cursor_remove(silent);
  301.         position += cols;
  302.         position -= position % cols;
  303.         break;
  304.     case '\r':
  305.         cursor_remove(silent);
  306.         position -= position % cols;
  307.         break;
  308.     case '\b':
  309.         cursor_remove(silent);
  310.         if (position % cols)
  311.             position--;
  312.         break;
  313.     case '\t':
  314.         cursor_remove(silent);
  315.         do {
  316.             glyph_draw(fb_font_glyph(' '), position % cols,
  317.                 position / cols, silent, false);
  318.             position++;
  319.         } while ((position % 8) && (position < cols * rows));
  320.         break;
  321.     default:
  322.         glyph_draw(fb_font_glyph(ch), position % cols,
  323.             position / cols, silent, false);
  324.         position++;
  325.     }
  326.    
  327.     if (position >= cols * rows) {
  328.         position -= cols;
  329.         screen_scroll(silent);
  330.     }
  331.    
  332.     cursor_put(silent);
  333.    
  334.     spinlock_unlock(&fb_lock);
  335. }
  336.  
  337. static outdev_t fb_console;
  338. static outdev_operations_t fb_ops = {
  339.     .write = fb_putchar
  340. };
  341.  
  342.  
  343. /** Render glyphs
  344.  *
  345.  * Convert glyphs from device independent font
  346.  * description to current visual representation.
  347.  *
  348.  */
  349. static void glyphs_render(void)
  350. {
  351.     /* Prerender glyphs */
  352.     uint16_t glyph;
  353.    
  354.     for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
  355.         uint32_t fg_color;
  356.        
  357.         if (glyph == FONT_GLYPHS - 1)
  358.             fg_color = INV_COLOR;
  359.         else
  360.             fg_color = FG_COLOR;
  361.        
  362.         unsigned int y;
  363.        
  364.         for (y = 0; y < FONT_SCANLINES; y++) {
  365.             unsigned int x;
  366.            
  367.             for (x = 0; x < FONT_WIDTH; x++) {
  368.                 void *dst = &glyphs[GLYPH_POS(glyph, y) +
  369.                     x * pixelbytes];
  370.                 uint32_t rgb = (fb_font[glyph][y] &
  371.                     (1 << (7 - x))) ? fg_color : BG_COLOR;
  372.                 rgb_conv(dst, rgb);
  373.             }
  374.         }
  375.     }
  376.    
  377.     /* Prerender background scanline */
  378.     unsigned int x;
  379.    
  380.     for (x = 0; x < xres; x++)
  381.         rgb_conv(&bgscan[x * pixelbytes], BG_COLOR);
  382. }
  383.  
  384.  
  385. /** Refresh the screen
  386.  *
  387.  */
  388. void fb_redraw(void)
  389. {
  390.     if (ylogo > 0) {
  391.         unsigned int y;
  392.        
  393.         for (y = 0; y < LOGO_HEIGHT; y++) {
  394.             unsigned int x;
  395.            
  396.             for (x = 0; x < xres; x++)
  397.                 rgb_conv(&fb_addr[FB_POS(x, y)],
  398.                     (x < LOGO_WIDTH) ?
  399.                     fb_logo[y * LOGO_WIDTH + x] :
  400.                     LOGO_COLOR);
  401.         }
  402.     }
  403.    
  404.     unsigned int row;
  405.    
  406.     for (row = 0; row < rowtrim; row++) {
  407.         unsigned int y = ylogo + ROW2Y(row);
  408.         unsigned int yd;
  409.        
  410.         for (yd = 0; yd < FONT_SCANLINES; yd++) {
  411.             unsigned int x;
  412.             unsigned int col;
  413.            
  414.             for (col = 0, x = 0; col < cols;
  415.                 col++, x += FONT_WIDTH) {
  416.                 uint16_t glyph = backbuf[BB_POS(col, row)];
  417.                 void *dst = &fb_addr[FB_POS(x, y + yd)];
  418.                 void *src = &glyphs[GLYPH_POS(glyph, yd)];
  419.                 memcpy(dst, src, glyphscanline);
  420.             }
  421.         }
  422.     }
  423.    
  424.     if (COL2X(cols) < xres) {
  425.         unsigned int y;
  426.         unsigned int size = (xres - COL2X(cols)) * pixelbytes;
  427.        
  428.         for (y = ylogo; y < yres; y++)
  429.             memcpy(&fb_addr[FB_POS(COL2X(cols), y)], bgscan, size);
  430.     }
  431.    
  432.     if (ROW2Y(rowtrim) + ylogo < yres) {
  433.         unsigned int y;
  434.        
  435.         for (y = ROW2Y(rowtrim) + ylogo; y < yres; y++)
  436.             memcpy(&fb_addr[FB_POS(0, y)], bgscan, bgscanbytes);
  437.     }
  438. }
  439.  
  440.  
  441. /** Initialize framebuffer as a output character device
  442.  *
  443.  * @param addr   Physical address of the framebuffer
  444.  * @param x      Screen width in pixels
  445.  * @param y      Screen height in pixels
  446.  * @param scan   Bytes per one scanline
  447.  * @param visual Color model
  448.  *
  449.  */
  450. void fb_init(fb_properties_t *props)
  451. {
  452.     switch (props->visual) {
  453.     case VISUAL_INDIRECT_8:
  454.         rgb_conv = bgr_323;
  455.         pixelbytes = 1;
  456.         break;
  457.     case VISUAL_BGR_5_5_5:
  458.         rgb_conv = bgr_555;
  459.         pixelbytes = 2;
  460.         break;
  461.     case VISUAL_BGR_5_6_5:
  462.         rgb_conv = bgr_565;
  463.         pixelbytes = 2;
  464.         break;
  465.     case VISUAL_RGB_8_8_8:
  466.         rgb_conv = rgb_888;
  467.         pixelbytes = 3;
  468.         break;
  469.     case VISUAL_BGR_8_8_8:
  470.         rgb_conv = bgr_888;
  471.         pixelbytes = 3;
  472.         break;
  473.     case VISUAL_RGB_8_8_8_0:
  474.         rgb_conv = rgb_8880;
  475.         pixelbytes = 4;
  476.         break;
  477.     case VISUAL_RGB_0_8_8_8:
  478.         rgb_conv = rgb_0888;
  479.         pixelbytes = 4;
  480.         break;
  481.     case VISUAL_BGR_0_8_8_8:
  482.         rgb_conv = bgr_0888;
  483.         pixelbytes = 4;
  484.         break;
  485.     case VISUAL_BGR_8_8_8_0:
  486.         rgb_conv = bgr_8880;
  487.         pixelbytes = 4;
  488.         break;
  489.     default:
  490.         panic("Unsupported visual.");
  491.     }
  492.    
  493.     xres = props->x;
  494.     yres = props->y;
  495.     scanline = props->scan;
  496.    
  497.     cols = X2COL(xres);
  498.     rows = Y2ROW(yres);
  499.    
  500.     if (yres > ylogo) {
  501.         ylogo = LOGO_HEIGHT;
  502.         rowtrim = rows - Y2ROW(ylogo);
  503.         if (ylogo % FONT_SCANLINES > 0)
  504.             rowtrim--;
  505.         ytrim = ROW2Y(rowtrim);
  506.     } else {
  507.         ylogo = 0;
  508.         ytrim = yres;
  509.         rowtrim = rows;
  510.     }
  511.    
  512.     glyphscanline = FONT_WIDTH * pixelbytes;
  513.     glyphbytes = ROW2Y(glyphscanline);
  514.     bgscanbytes = xres * pixelbytes;
  515.    
  516.     size_t fbsize = scanline * yres;
  517.     size_t bbsize = cols * rows * sizeof(uint16_t);
  518.     size_t glyphsize = FONT_GLYPHS * glyphbytes;
  519.    
  520.     backbuf = (uint16_t *) malloc(bbsize, 0);
  521.     if (!backbuf)
  522.         panic("Unable to allocate backbuffer.");
  523.    
  524.     glyphs = (uint8_t *) malloc(glyphsize, 0);
  525.     if (!glyphs)
  526.         panic("Unable to allocate glyphs.");
  527.    
  528.     bgscan = malloc(bgscanbytes, 0);
  529.     if (!bgscan)
  530.         panic("Unable to allocate background pixel.");
  531.    
  532.     memsetw(backbuf, cols * rows, 0);
  533.    
  534.     glyphs_render();
  535.    
  536.     fb_addr = (uint8_t *) hw_map((uintptr_t) props->addr, fbsize);
  537.    
  538.     sysinfo_set_item_val("fb", NULL, true);
  539.     sysinfo_set_item_val("fb.kind", NULL, 1);
  540.     sysinfo_set_item_val("fb.width", NULL, xres);
  541.     sysinfo_set_item_val("fb.height", NULL, yres);
  542.     sysinfo_set_item_val("fb.scanline", NULL, scanline);
  543.     sysinfo_set_item_val("fb.visual", NULL, props->visual);
  544.     sysinfo_set_item_val("fb.address.physical", NULL, props->addr);
  545.    
  546.     fb_redraw();
  547.    
  548.     outdev_initialize("fb", &fb_console, &fb_ops);
  549.     stdout = &fb_console;
  550. }
  551.  
  552. /** @}
  553.  */
  554.