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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 rgb_555_be(void *dst, uint32_t rgb)
  149. {
  150.     *((uint16_t *) dst) = host2uint16_t_be(RED(rgb, 5) << 10 |
  151.         GREEN(rgb, 5) << 5 | BLUE(rgb, 5));
  152. }
  153.  
  154. static void rgb_555_le(void *dst, uint32_t rgb)
  155. {
  156.     *((uint16_t *) dst) = host2uint16_t_le(RED(rgb, 5) << 10 |
  157.         GREEN(rgb, 5) << 5 | BLUE(rgb, 5));
  158. }
  159.  
  160. static void rgb_565_be(void *dst, uint32_t rgb)
  161. {
  162.     *((uint16_t *) dst) = host2uint16_t_be(RED(rgb, 5) << 11 |
  163.         GREEN(rgb, 6) << 5 | BLUE(rgb, 5));
  164. }
  165.  
  166. static void rgb_565_le(void *dst, uint32_t rgb)
  167. {
  168.     *((uint16_t *) dst) = host2uint16_t_le(RED(rgb, 5) << 11 |
  169.         GREEN(rgb, 6) << 5 | BLUE(rgb, 5));
  170. }
  171.  
  172.  
  173. /** BGR 3:2:3
  174.  *
  175.  * Even though we try 3:2:3 color scheme here, an 8-bit framebuffer
  176.  * will most likely use a color palette. The color appearance
  177.  * will be pretty random and depend on the default installed
  178.  * palette. This could be fixed by supporting custom palette
  179.  * and setting it to simulate the 8-bit truecolor.
  180.  *
  181.  * Currently we set the palette on the ia32, amd64 and sparc64 port.
  182.  *
  183.  * Note that the byte is being inverted by this function. The reason is
  184.  * that we would like to use a color palette where the white color code
  185.  * is 0 and the black color code is 255, as some machines (Sun Blade 1500)
  186.  * use these codes for black and white and prevent to set codes
  187.  * 0 and 255 to other colors.
  188.  *
  189.  */
  190. static void bgr_323(void *dst, uint32_t rgb)
  191. {
  192.     *((uint8_t *) dst)
  193.         = ~((RED(rgb, 3) << 5) | (GREEN(rgb, 2) << 3) | BLUE(rgb, 3));
  194. }
  195.  
  196.  
  197. /** Hide logo and refresh screen
  198.  *
  199.  */
  200. static void logo_hide(bool silent)
  201. {
  202.     ylogo = 0;
  203.     ytrim = yres;
  204.     rowtrim = rows;
  205.     if (!silent)
  206.         fb_redraw();
  207. }
  208.  
  209.  
  210. /** Draw character at given position
  211.  *
  212.  */
  213. static void glyph_draw(uint16_t glyph, unsigned int col, unsigned int row, bool silent, bool overlay)
  214. {
  215.     unsigned int x = COL2X(col);
  216.     unsigned int y = ROW2Y(row);
  217.     unsigned int yd;
  218.    
  219.     if (y >= ytrim)
  220.         logo_hide(silent);
  221.    
  222.     if (!overlay)
  223.         backbuf[BB_POS(col, row)] = glyph;
  224.    
  225.     if (!silent) {
  226.         for (yd = 0; yd < FONT_SCANLINES; yd++)
  227.             memcpy(&fb_addr[FB_POS(x, y + yd + ylogo)],
  228.                 &glyphs[GLYPH_POS(glyph, yd)], glyphscanline);
  229.     }
  230. }
  231.  
  232.  
  233. /** Scroll screen down by one row
  234.  *
  235.  *
  236.  */
  237. static void screen_scroll(bool silent)
  238. {
  239.     if (ylogo > 0) {
  240.         logo_hide(silent);
  241.         return;
  242.     }
  243.    
  244.     if (!silent) {
  245.         unsigned int row;
  246.        
  247.         for (row = 0; row < rows; row++) {
  248.             unsigned int y = ROW2Y(row);
  249.             unsigned int yd;
  250.            
  251.             for (yd = 0; yd < FONT_SCANLINES; yd++) {
  252.                 unsigned int x;
  253.                 unsigned int col;
  254.                
  255.                 for (col = 0, x = 0; col < cols; col++,
  256.                     x += FONT_WIDTH) {
  257.                     uint16_t glyph;
  258.                    
  259.                     if (row < rows - 1) {
  260.                         if (backbuf[BB_POS(col, row)] ==
  261.                             backbuf[BB_POS(col, row + 1)])
  262.                             continue;
  263.                        
  264.                         glyph = backbuf[BB_POS(col, row + 1)];
  265.                     } else
  266.                         glyph = 0;
  267.                    
  268.                     memcpy(&fb_addr[FB_POS(x, y + yd)],
  269.                         &glyphs[GLYPH_POS(glyph, yd)],
  270.                         glyphscanline);
  271.                 }
  272.             }
  273.         }
  274.     }
  275.    
  276.     memmove(backbuf, &backbuf[BB_POS(0, 1)], cols * (rows - 1) * sizeof(uint16_t));
  277.     memsetw(&backbuf[BB_POS(0, rows - 1)], cols, 0);
  278. }
  279.  
  280.  
  281. static void cursor_put(bool silent)
  282. {
  283.     unsigned int col = position % cols;
  284.     unsigned int row = position / cols;
  285.    
  286.     glyph_draw(fb_font_glyph(U_CURSOR), col, row, silent, true);
  287. }
  288.  
  289.  
  290. static void cursor_remove(bool silent)
  291. {
  292.     unsigned int col = position % cols;
  293.     unsigned int row = position / cols;
  294.    
  295.     glyph_draw(backbuf[BB_POS(col, row)], col, row, silent, true);
  296. }
  297.  
  298.  
  299. /** Print character to screen
  300.  *
  301.  * Emulate basic terminal commands.
  302.  *
  303.  */
  304. static void fb_putchar(outdev_t *dev, wchar_t ch, bool silent)
  305. {
  306.     spinlock_lock(&fb_lock);
  307.    
  308.     switch (ch) {
  309.     case '\n':
  310.         cursor_remove(silent);
  311.         position += cols;
  312.         position -= position % cols;
  313.         break;
  314.     case '\r':
  315.         cursor_remove(silent);
  316.         position -= position % cols;
  317.         break;
  318.     case '\b':
  319.         cursor_remove(silent);
  320.         if (position % cols)
  321.             position--;
  322.         break;
  323.     case '\t':
  324.         cursor_remove(silent);
  325.         do {
  326.             glyph_draw(fb_font_glyph(' '), position % cols,
  327.                 position / cols, silent, false);
  328.             position++;
  329.         } while ((position % 8) && (position < cols * rows));
  330.         break;
  331.     default:
  332.         glyph_draw(fb_font_glyph(ch), position % cols,
  333.             position / cols, silent, false);
  334.         position++;
  335.     }
  336.    
  337.     if (position >= cols * rows) {
  338.         position -= cols;
  339.         screen_scroll(silent);
  340.     }
  341.    
  342.     cursor_put(silent);
  343.    
  344.     spinlock_unlock(&fb_lock);
  345. }
  346.  
  347. static outdev_t fb_console;
  348. static outdev_operations_t fb_ops = {
  349.     .write = fb_putchar
  350. };
  351.  
  352.  
  353. /** Render glyphs
  354.  *
  355.  * Convert glyphs from device independent font
  356.  * description to current visual representation.
  357.  *
  358.  */
  359. static void glyphs_render(void)
  360. {
  361.     /* Prerender glyphs */
  362.     uint16_t glyph;
  363.    
  364.     for (glyph = 0; glyph < FONT_GLYPHS; glyph++) {
  365.         uint32_t fg_color;
  366.        
  367.         if (glyph == FONT_GLYPHS - 1)
  368.             fg_color = INV_COLOR;
  369.         else
  370.             fg_color = FG_COLOR;
  371.        
  372.         unsigned int y;
  373.        
  374.         for (y = 0; y < FONT_SCANLINES; y++) {
  375.             unsigned int x;
  376.            
  377.             for (x = 0; x < FONT_WIDTH; x++) {
  378.                 void *dst = &glyphs[GLYPH_POS(glyph, y) +
  379.                     x * pixelbytes];
  380.                 uint32_t rgb = (fb_font[glyph][y] &
  381.                     (1 << (7 - x))) ? fg_color : BG_COLOR;
  382.                 rgb_conv(dst, rgb);
  383.             }
  384.         }
  385.     }
  386.    
  387.     /* Prerender background scanline */
  388.     unsigned int x;
  389.    
  390.     for (x = 0; x < xres; x++)
  391.         rgb_conv(&bgscan[x * pixelbytes], BG_COLOR);
  392. }
  393.  
  394.  
  395. /** Refresh the screen
  396.  *
  397.  */
  398. void fb_redraw(void)
  399. {
  400.     if (ylogo > 0) {
  401.         unsigned int y;
  402.        
  403.         for (y = 0; y < LOGO_HEIGHT; y++) {
  404.             unsigned int x;
  405.            
  406.             for (x = 0; x < xres; x++)
  407.                 rgb_conv(&fb_addr[FB_POS(x, y)],
  408.                     (x < LOGO_WIDTH) ?
  409.                     fb_logo[y * LOGO_WIDTH + x] :
  410.                     LOGO_COLOR);
  411.         }
  412.     }
  413.    
  414.     unsigned int row;
  415.    
  416.     for (row = 0; row < rowtrim; row++) {
  417.         unsigned int y = ylogo + ROW2Y(row);
  418.         unsigned int yd;
  419.        
  420.         for (yd = 0; yd < FONT_SCANLINES; yd++) {
  421.             unsigned int x;
  422.             unsigned int col;
  423.            
  424.             for (col = 0, x = 0; col < cols;
  425.                 col++, x += FONT_WIDTH) {
  426.                 uint16_t glyph = backbuf[BB_POS(col, row)];
  427.                 void *dst = &fb_addr[FB_POS(x, y + yd)];
  428.                 void *src = &glyphs[GLYPH_POS(glyph, yd)];
  429.                 memcpy(dst, src, glyphscanline);
  430.             }
  431.         }
  432.     }
  433.    
  434.     if (COL2X(cols) < xres) {
  435.         unsigned int y;
  436.         unsigned int size = (xres - COL2X(cols)) * pixelbytes;
  437.        
  438.         for (y = ylogo; y < yres; y++)
  439.             memcpy(&fb_addr[FB_POS(COL2X(cols), y)], bgscan, size);
  440.     }
  441.    
  442.     if (ROW2Y(rowtrim) + ylogo < yres) {
  443.         unsigned int y;
  444.        
  445.         for (y = ROW2Y(rowtrim) + ylogo; y < yres; y++)
  446.             memcpy(&fb_addr[FB_POS(0, y)], bgscan, bgscanbytes);
  447.     }
  448. }
  449.  
  450.  
  451. /** Initialize framebuffer as a output character device
  452.  *
  453.  * @param addr   Physical address of the framebuffer
  454.  * @param x      Screen width in pixels
  455.  * @param y      Screen height in pixels
  456.  * @param scan   Bytes per one scanline
  457.  * @param visual Color model
  458.  *
  459.  */
  460. void fb_init(fb_properties_t *props)
  461. {
  462.     switch (props->visual) {
  463.     case VISUAL_INDIRECT_8:
  464.         rgb_conv = bgr_323;
  465.         pixelbytes = 1;
  466.         break;
  467.     case VISUAL_RGB_5_5_5_LE:
  468.         rgb_conv = rgb_555_le;
  469.         pixelbytes = 2;
  470.         break;
  471.     case VISUAL_RGB_5_5_5_BE:
  472.         rgb_conv = rgb_555_be;
  473.         pixelbytes = 2;
  474.         break;
  475.     case VISUAL_RGB_5_6_5_LE:
  476.         rgb_conv = rgb_565_le;
  477.         pixelbytes = 2;
  478.         break;
  479.     case VISUAL_RGB_5_6_5_BE:
  480.         rgb_conv = rgb_565_be;
  481.         pixelbytes = 2;
  482.         break;
  483.     case VISUAL_RGB_8_8_8:
  484.         rgb_conv = rgb_888;
  485.         pixelbytes = 3;
  486.         break;
  487.     case VISUAL_BGR_8_8_8:
  488.         rgb_conv = bgr_888;
  489.         pixelbytes = 3;
  490.         break;
  491.     case VISUAL_RGB_8_8_8_0:
  492.         rgb_conv = rgb_8880;
  493.         pixelbytes = 4;
  494.         break;
  495.     case VISUAL_RGB_0_8_8_8:
  496.         rgb_conv = rgb_0888;
  497.         pixelbytes = 4;
  498.         break;
  499.     case VISUAL_BGR_0_8_8_8:
  500.         rgb_conv = bgr_0888;
  501.         pixelbytes = 4;
  502.         break;
  503.     case VISUAL_BGR_8_8_8_0:
  504.         rgb_conv = bgr_8880;
  505.         pixelbytes = 4;
  506.         break;
  507.     default:
  508.         panic("Unsupported visual.");
  509.     }
  510.    
  511.     xres = props->x;
  512.     yres = props->y;
  513.     scanline = props->scan;
  514.    
  515.     cols = X2COL(xres);
  516.     rows = Y2ROW(yres);
  517.    
  518.     if (yres > ylogo) {
  519.         ylogo = LOGO_HEIGHT;
  520.         rowtrim = rows - Y2ROW(ylogo);
  521.         if (ylogo % FONT_SCANLINES > 0)
  522.             rowtrim--;
  523.         ytrim = ROW2Y(rowtrim);
  524.     } else {
  525.         ylogo = 0;
  526.         ytrim = yres;
  527.         rowtrim = rows;
  528.     }
  529.    
  530.     glyphscanline = FONT_WIDTH * pixelbytes;
  531.     glyphbytes = ROW2Y(glyphscanline);
  532.     bgscanbytes = xres * pixelbytes;
  533.    
  534.     size_t fbsize = scanline * yres;
  535.     size_t bbsize = cols * rows * sizeof(uint16_t);
  536.     size_t glyphsize = FONT_GLYPHS * glyphbytes;
  537.    
  538.     backbuf = (uint16_t *) malloc(bbsize, 0);
  539.     if (!backbuf)
  540.         panic("Unable to allocate backbuffer.");
  541.    
  542.     glyphs = (uint8_t *) malloc(glyphsize, 0);
  543.     if (!glyphs)
  544.         panic("Unable to allocate glyphs.");
  545.    
  546.     bgscan = malloc(bgscanbytes, 0);
  547.     if (!bgscan)
  548.         panic("Unable to allocate background pixel.");
  549.    
  550.     memsetw(backbuf, cols * rows, 0);
  551.    
  552.     glyphs_render();
  553.    
  554.     fb_addr = (uint8_t *) hw_map((uintptr_t) props->addr, fbsize);
  555.    
  556.     sysinfo_set_item_val("fb", NULL, true);
  557.     sysinfo_set_item_val("fb.kind", NULL, 1);
  558.     sysinfo_set_item_val("fb.width", NULL, xres);
  559.     sysinfo_set_item_val("fb.height", NULL, yres);
  560.     sysinfo_set_item_val("fb.scanline", NULL, scanline);
  561.     sysinfo_set_item_val("fb.visual", NULL, props->visual);
  562.     sysinfo_set_item_val("fb.address.physical", NULL, props->addr);
  563.    
  564.     fb_redraw();
  565.    
  566.     outdev_initialize("fb", &fb_console, &fb_ops);
  567.     stdout = &fb_console;
  568. }
  569.  
  570. /** @}
  571.  */
  572.