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  1. /*
  2.  * Copyright (c) 2006 Ondrej Palkovsky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup genarch
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <genarch/fb/font-8x16.h>
  36. #include <genarch/fb/visuals.h>
  37. #include <genarch/fb/fb.h>
  38. #include <console/chardev.h>
  39. #include <console/console.h>
  40. #include <sysinfo/sysinfo.h>
  41. #include <mm/slab.h>
  42. #include <panic.h>
  43. #include <memstr.h>
  44. #include <config.h>
  45. #include <bitops.h>
  46. #include <print.h>
  47. #include <ddi/ddi.h>
  48. #include <arch/types.h>
  49. #include <typedefs.h>
  50.  
  51. #include "helenos.xbm"
  52.  
  53. static parea_t fb_parea;        /**< Physical memory area for fb. */
  54.  
  55. SPINLOCK_INITIALIZE(fb_lock);
  56.  
  57. static uint8_t *fbaddress = NULL;
  58.  
  59. static uint8_t *blankline = NULL;
  60. static uint8_t *dbbuffer = NULL;    /* Buffer for fast scrolling console */
  61. static index_t dboffset;
  62.  
  63. static unsigned int xres = 0;
  64. static unsigned int yres = 0;
  65. static unsigned int scanline = 0;
  66. static unsigned int pixelbytes = 0;
  67. #ifdef FB_INVERT_COLORS
  68. static bool invert_colors = true;
  69. #else
  70. static bool invert_colors = false;
  71. #endif
  72.  
  73. static unsigned int position = 0;
  74. static unsigned int columns = 0;
  75. static unsigned int rows = 0;
  76.  
  77. #define COL_WIDTH   8
  78. #define ROW_BYTES   (scanline * FONT_SCANLINES)
  79.  
  80. #define BGCOLOR     0x000080
  81. #define FGCOLOR     0xffff00
  82. #define LOGOCOLOR   0x2020b0
  83.  
  84. #define RED(x, bits)    ((x >> (16 + 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 POINTPOS(x, y)  ((y) * scanline + (x) * pixelbytes)
  89.  
  90. /***************************************************************/
  91. /* Pixel specific fuctions */
  92.  
  93. static void (*rgb2scr)(void *, int);
  94. static int (*scr2rgb)(void *);
  95.  
  96. static inline int COLOR(int color)
  97. {
  98.     return invert_colors ? ~color : color;
  99. }
  100.  
  101. /* Conversion routines between different color representations */
  102. static void rgb_byte0888(void *dst, int rgb)
  103. {
  104.     *((int *) dst) = rgb;
  105. }
  106.  
  107. static int byte0888_rgb(void *src)
  108. {
  109.     return (*((int *) src)) & 0xffffff;
  110. }
  111.  
  112. static void bgr_byte0888(void *dst, int rgb)
  113. {
  114.     *((uint32_t *) dst) = BLUE(rgb, 8) << 16 | GREEN(rgb, 8) << 8 | RED(rgb,
  115.         8);
  116. }
  117.  
  118. static int byte0888_bgr(void *src)
  119. {
  120.     int color = *(uint32_t *)(src);
  121.     return ((color & 0xff) << 16) | (((color >> 8) & 0xff) << 8) | ((color
  122.         >> 16) & 0xff);
  123. }
  124.  
  125. static void rgb_byte888(void *dst, int rgb)
  126. {
  127.     uint8_t *scr = dst;
  128. #if defined(FB_INVERT_ENDIAN)
  129.     scr[0] = RED(rgb, 8);
  130.     scr[1] = GREEN(rgb, 8);
  131.     scr[2] = BLUE(rgb, 8);
  132. #else
  133.     scr[2] = RED(rgb, 8);
  134.     scr[1] = GREEN(rgb, 8);
  135.     scr[0] = BLUE(rgb, 8);
  136. #endif
  137. }
  138.  
  139. static int byte888_rgb(void *src)
  140. {
  141.     uint8_t *scr = src;
  142. #if defined(FB_INVERT_ENDIAN)
  143.     return scr[0] << 16 | scr[1] << 8 | scr[2];
  144. #else
  145.     return scr[2] << 16 | scr[1] << 8 | scr[0];
  146. #endif 
  147. }
  148.  
  149. /**  16-bit depth (5:5:5) */
  150. static void rgb_byte555(void *dst, int rgb)
  151. {
  152.     /* 5-bit, 5-bits, 5-bits */
  153.     *((uint16_t *) dst) = RED(rgb, 5) << 10 | GREEN(rgb, 5) << 5 | BLUE(rgb,
  154.         5);
  155. }
  156.  
  157. /** 16-bit depth (5:5:5) */
  158. static int byte555_rgb(void *src)
  159. {
  160.     int color = *(uint16_t *)(src);
  161.     return (((color >> 10) & 0x1f) << (16 + 3)) | (((color >> 5) & 0x1f) <<
  162.         (8 + 3)) | ((color & 0x1f) << 3);
  163. }
  164.  
  165. /**  16-bit depth (5:6:5) */
  166. static void rgb_byte565(void *dst, int rgb)
  167. {
  168.     /* 5-bit, 6-bits, 5-bits */
  169.     *((uint16_t *) dst) = RED(rgb, 5) << 11 | GREEN(rgb, 6) << 5 | BLUE(rgb,        5);
  170. }
  171.  
  172. /** 16-bit depth (5:6:5) */
  173. static int byte565_rgb(void *src)
  174. {
  175.     int color = *(uint16_t *)(src);
  176.     return (((color >> 11) & 0x1f) << (16 + 3)) | (((color >> 5) & 0x3f) <<
  177.         (8 + 2)) | ((color & 0x1f) << 3);
  178. }
  179.  
  180. /** Put pixel - 8-bit depth (color palette/3:2:3)
  181.  *
  182.  * Even though we try 3:2:3 color scheme here, an 8-bit framebuffer
  183.  * will most likely use a color palette. The color appearance
  184.  * will be pretty random and depend on the default installed
  185.  * palette. This could be fixed by supporting custom palette
  186.  * and setting it to simulate the 8-bit truecolor.
  187.  */
  188. static void rgb_byte8(void *dst, int rgb)
  189. {
  190.     *((uint8_t *) dst) = RED(rgb, 3) << 5 | GREEN(rgb, 2) << 3 | BLUE(rgb,
  191.         3);
  192. }
  193.  
  194. /** Return pixel color - 8-bit depth (color palette/3:2:3)
  195.  *
  196.  * See the comment for rgb_byte().
  197.  */
  198. static int byte8_rgb(void *src)
  199. {
  200.     int color = *(uint8_t *)src;
  201.     return (((color >> 5) & 0x7) << (16 + 5)) | (((color >> 3) & 0x3) << (8
  202.         + 6)) | ((color & 0x7) << 5);
  203. }
  204.  
  205. static void putpixel(unsigned int x, unsigned int y, int color)
  206. {
  207.     (*rgb2scr)(&fbaddress[POINTPOS(x, y)], COLOR(color));
  208.  
  209.     if (dbbuffer) {
  210.         int dline = (y + dboffset) % yres;
  211.         (*rgb2scr)(&dbbuffer[POINTPOS(x, dline)], COLOR(color));
  212.     }
  213. }
  214.  
  215. /** Get pixel from viewport */
  216. static int getpixel(unsigned int x, unsigned int y)
  217. {
  218.     if (dbbuffer) {
  219.         int dline = (y + dboffset) % yres;
  220.         return COLOR((*scr2rgb)(&dbbuffer[POINTPOS(x, dline)]));
  221.     }
  222.     return COLOR((*scr2rgb)(&fbaddress[POINTPOS(x, y)]));
  223. }
  224.  
  225.  
  226. /** Fill screen with background color */
  227. static void clear_screen(void)
  228. {
  229.     unsigned int y;
  230.  
  231.     for (y = 0; y < yres; y++) {
  232.         memcpy(&fbaddress[scanline * y], blankline, xres * pixelbytes);
  233.         if (dbbuffer)
  234.             memcpy(&dbbuffer[scanline * y], blankline, xres *
  235.                 pixelbytes);
  236.     }
  237. }
  238.  
  239.  
  240. /** Scroll screen one row up */
  241. static void scroll_screen(void)
  242. {
  243.     if (dbbuffer) {
  244.         count_t first;
  245.        
  246.         memcpy(&dbbuffer[dboffset * scanline], blankline, ROW_BYTES);
  247.        
  248.         dboffset = (dboffset + FONT_SCANLINES) % yres;
  249.         first = yres - dboffset;
  250.  
  251.         memcpy(fbaddress, &dbbuffer[scanline * dboffset], first *
  252.             scanline);
  253.         memcpy(&fbaddress[first * scanline], dbbuffer, dboffset *
  254.             scanline);
  255.     } else {
  256.         uint8_t *lastline = &fbaddress[(rows - 1) * ROW_BYTES];
  257.        
  258.         memcpy((void *) fbaddress, (void *) &fbaddress[ROW_BYTES],
  259.             scanline * yres - ROW_BYTES);
  260.         /* Clear last row */
  261.         memcpy((void *) lastline, (void *) blankline, ROW_BYTES);
  262.     }
  263. }
  264.  
  265.  
  266. static void invert_pixel(unsigned int x, unsigned int y)
  267. {
  268.     putpixel(x, y, ~getpixel(x, y));
  269. }
  270.  
  271.  
  272. /** Draw one line of glyph at a given position */
  273. static void draw_glyph_line(unsigned int glline, unsigned int x, unsigned int y)
  274. {
  275.     unsigned int i;
  276.  
  277.     for (i = 0; i < 8; i++)
  278.         if (glline & (1 << (7 - i))) {
  279.             putpixel(x + i, y, FGCOLOR);
  280.         } else
  281.             putpixel(x + i, y, BGCOLOR);
  282. }
  283.  
  284. /***************************************************************/
  285. /* Character-console functions */
  286.  
  287. /** Draw character at given position */
  288. static void draw_glyph(uint8_t glyph, unsigned int col, unsigned int row)
  289. {
  290.     unsigned int y;
  291.  
  292.     for (y = 0; y < FONT_SCANLINES; y++)
  293.         draw_glyph_line(fb_font[glyph * FONT_SCANLINES + y], col *
  294.             COL_WIDTH, row * FONT_SCANLINES + y);
  295. }
  296.  
  297. /** Invert character at given position */
  298. static void invert_char(unsigned int col, unsigned int row)
  299. {
  300.     unsigned int x;
  301.     unsigned int y;
  302.  
  303.     for (x = 0; x < COL_WIDTH; x++)
  304.         for (y = 0; y < FONT_SCANLINES; y++)
  305.             invert_pixel(col * COL_WIDTH + x, row * FONT_SCANLINES +
  306.                 y);
  307. }
  308.  
  309. /** Draw character at default position */
  310. static void draw_char(char chr)
  311. {
  312.     draw_glyph(chr, position % columns, position / columns);
  313. }
  314.  
  315. static void draw_logo(unsigned int startx, unsigned int starty)
  316. {
  317.     unsigned int x;
  318.     unsigned int y;
  319.     unsigned int byte;
  320.     unsigned int rowbytes;
  321.  
  322.     rowbytes = (helenos_width - 1) / 8 + 1;
  323.  
  324.     for (y = 0; y < helenos_height; y++)
  325.         for (x = 0; x < helenos_width; x++) {
  326.             byte = helenos_bits[rowbytes * y + x / 8];
  327.             byte >>= x % 8;
  328.             if (byte & 1)
  329.                 putpixel(startx + x, starty + y,
  330.                     COLOR(LOGOCOLOR));
  331.         }
  332. }
  333.  
  334. /***************************************************************/
  335. /* Stdout specific functions */
  336.  
  337. static void invert_cursor(void)
  338. {
  339.     invert_char(position % columns, position / columns);
  340. }
  341.  
  342. /** Print character to screen
  343.  *
  344.  *  Emulate basic terminal commands
  345.  */
  346. static void fb_putchar(chardev_t *dev, char ch)
  347. {
  348.     spinlock_lock(&fb_lock);
  349.    
  350.     switch (ch) {
  351.     case '\n':
  352.         invert_cursor();
  353.         position += columns;
  354.         position -= position % columns;
  355.         break;
  356.     case '\r':
  357.         invert_cursor();
  358.         position -= position % columns;
  359.         break;
  360.     case '\b':
  361.         invert_cursor();
  362.         if (position % columns)
  363.             position--;
  364.         break;
  365.     case '\t':
  366.         invert_cursor();
  367.         do {
  368.             draw_char(' ');
  369.             position++;
  370.         } while ((position % 8) && position < columns * rows);
  371.         break;
  372.     default:
  373.         draw_char(ch);
  374.         position++;
  375.     }
  376.    
  377.     if (position >= columns * rows) {
  378.         position -= columns;
  379.         scroll_screen();
  380.     }
  381.    
  382.     invert_cursor();
  383.    
  384.     spinlock_unlock(&fb_lock);
  385. }
  386.  
  387. static chardev_t framebuffer;
  388. static chardev_operations_t fb_ops = {
  389.     .write = fb_putchar,
  390. };
  391.  
  392.  
  393. /** Initialize framebuffer as a chardev output device
  394.  *
  395.  * @param addr   Physical address of the framebuffer
  396.  * @param x      Screen width in pixels
  397.  * @param y      Screen height in pixels
  398.  * @param scan   Bytes per one scanline
  399.  * @param visual Color model
  400.  *
  401.  */
  402. void fb_init(uintptr_t addr, unsigned int x, unsigned int y, unsigned int scan,
  403.     unsigned int visual)
  404. {
  405.     switch (visual) {
  406.     case VISUAL_INDIRECT_8:
  407.         rgb2scr = rgb_byte8;
  408.         scr2rgb = byte8_rgb;
  409.         pixelbytes = 1;
  410.         break;
  411.     case VISUAL_RGB_5_5_5:
  412.         rgb2scr = rgb_byte555;
  413.         scr2rgb = byte555_rgb;
  414.         pixelbytes = 2;
  415.         break;
  416.     case VISUAL_RGB_5_6_5:
  417.         rgb2scr = rgb_byte565;
  418.         scr2rgb = byte565_rgb;
  419.         pixelbytes = 2;
  420.         break;
  421.     case VISUAL_RGB_8_8_8:
  422.         rgb2scr = rgb_byte888;
  423.         scr2rgb = byte888_rgb;
  424.         pixelbytes = 3;
  425.         break;
  426.     case VISUAL_RGB_8_8_8_0:
  427.         rgb2scr = rgb_byte888;
  428.         scr2rgb = byte888_rgb;
  429.         pixelbytes = 4;
  430.         break;
  431.     case VISUAL_RGB_0_8_8_8:
  432.         rgb2scr = rgb_byte0888;
  433.         scr2rgb = byte0888_rgb;
  434.         pixelbytes = 4;
  435.         break;
  436.     case VISUAL_BGR_0_8_8_8:
  437.         rgb2scr = bgr_byte0888;
  438.         scr2rgb = byte0888_bgr;
  439.         pixelbytes = 4;
  440.         break;
  441.     default:
  442.         panic("Unsupported visual.\n");
  443.     }
  444.    
  445.     unsigned int fbsize = scan * y;
  446.    
  447.     /* Map the framebuffer */
  448.     fbaddress = (uint8_t *) hw_map((uintptr_t) addr, fbsize);
  449.    
  450.     xres = x;
  451.     yres = y;
  452.     scanline = scan;
  453.    
  454.     rows = y / FONT_SCANLINES;
  455.     columns = x / COL_WIDTH;
  456.  
  457.     fb_parea.pbase = (uintptr_t) addr;
  458.     fb_parea.vbase = (uintptr_t) fbaddress;
  459.     fb_parea.frames = SIZE2FRAMES(fbsize);
  460.     fb_parea.cacheable = false;
  461.     ddi_parea_register(&fb_parea);
  462.  
  463.     sysinfo_set_item_val("fb", NULL, true);
  464.     sysinfo_set_item_val("fb.kind", NULL, 1);
  465.     sysinfo_set_item_val("fb.width", NULL, xres);
  466.     sysinfo_set_item_val("fb.height", NULL, yres);
  467.     sysinfo_set_item_val("fb.scanline", NULL, scan);
  468.     sysinfo_set_item_val("fb.visual", NULL, visual);
  469.     sysinfo_set_item_val("fb.address.physical", NULL, addr);
  470.     sysinfo_set_item_val("fb.address.color", NULL, PAGE_COLOR((uintptr_t)
  471.         fbaddress));
  472.     sysinfo_set_item_val("fb.invert-colors", NULL, invert_colors);
  473.  
  474.     /* Allocate double buffer */
  475.     unsigned int order = fnzb(SIZE2FRAMES(fbsize) - 1) + 1;
  476.     dbbuffer = (uint8_t *) frame_alloc(order, FRAME_ATOMIC | FRAME_KA);
  477.     if (!dbbuffer)
  478.         printf("Failed to allocate scroll buffer.\n");
  479.     dboffset = 0;
  480.  
  481.     /* Initialized blank line */
  482.     blankline = (uint8_t *) malloc(ROW_BYTES, FRAME_ATOMIC);
  483.     if (!blankline)
  484.         panic("Failed to allocate blank line for framebuffer.");
  485.     for (y = 0; y < FONT_SCANLINES; y++)
  486.         for (x = 0; x < xres; x++)
  487.             (*rgb2scr)(&blankline[POINTPOS(x, y)], COLOR(BGCOLOR));
  488.    
  489.     clear_screen();
  490.  
  491.     /* Update size of screen to match text area */
  492.     yres = rows * FONT_SCANLINES;
  493.  
  494.     draw_logo(xres - helenos_width, 0);
  495.     invert_cursor();
  496.  
  497.     chardev_initialize("fb", &framebuffer, &fb_ops);
  498.     stdout = &framebuffer;
  499. }
  500.  
  501. /** @}
  502.  */
  503.