| 1 | /*
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| 2 | * Copyright (c) 2006 Jakub Vana
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup ia32
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| 30 | * @{
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| 31 | */
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| 32 | /**
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| 33 | * @file
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| 34 | * @brief VESA frame buffer driver.
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| 35 | */
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| 36 |
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| 37 | #ifdef CONFIG_FB
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| 38 |
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| 39 | #include <genarch/fb/fb.h>
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| 40 | #include <genarch/fb/visuals.h>
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| 41 | #include <arch/drivers/vesa.h>
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| 42 | #include <putchar.h>
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| 43 | #include <mm/page.h>
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| 44 | #include <mm/frame.h>
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| 45 | #include <mm/as.h>
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| 46 | #include <arch/mm/page.h>
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| 47 | #include <synch/spinlock.h>
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| 48 | #include <arch/asm.h>
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| 49 | #include <arch/types.h>
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| 50 | #include <memstr.h>
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| 51 | #include <bitops.h>
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| 52 |
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| 53 | uint32_t vesa_ph_addr;
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| 54 | uint16_t vesa_width;
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| 55 | uint16_t vesa_height;
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| 56 | uint16_t vesa_bpp;
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| 57 | uint16_t vesa_scanline;
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| 58 |
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| 59 | uint8_t vesa_red_mask;
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| 60 | uint8_t vesa_red_pos;
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| 61 |
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| 62 | uint8_t vesa_green_mask;
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| 63 | uint8_t vesa_green_pos;
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| 64 |
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| 65 | uint8_t vesa_blue_mask;
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| 66 | uint8_t vesa_blue_pos;
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| 67 |
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| 68 | int vesa_present(void)
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| 69 | {
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| 70 | if ((vesa_width != 0xffff) && (vesa_height != 0xffff))
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| 71 | return true;
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| 72 |
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| 73 | return false;
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| 74 | }
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| 75 |
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| 76 | void vesa_init(void)
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| 77 | {
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| 78 | unsigned int visual;
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| 79 |
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| 80 | switch (vesa_bpp) {
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| 81 | case 8:
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| 82 | visual = VISUAL_INDIRECT_8;
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| 83 | break;
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| 84 | case 16:
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| 85 | if ((vesa_red_mask == 5) && (vesa_red_pos == 10)
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| 86 | && (vesa_green_mask == 5) && (vesa_green_pos == 5)
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| 87 | && (vesa_blue_mask == 5) && (vesa_blue_pos == 0))
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| 88 | visual = VISUAL_RGB_5_5_5;
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| 89 | else
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| 90 | visual = VISUAL_RGB_5_6_5;
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| 91 | break;
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| 92 | case 24:
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| 93 | visual = VISUAL_RGB_8_8_8;
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| 94 | break;
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| 95 | case 32:
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| 96 | visual = VISUAL_RGB_0_8_8_8;
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| 97 | break;
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| 98 | default:
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| 99 | panic("Unsupported bits per pixel.");
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| 100 | }
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| 101 |
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| 102 | fb_properties_t vesa_props = {
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| 103 | .addr = vesa_ph_addr,
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| 104 | .offset = 0,
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| 105 | .x = vesa_width,
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| 106 | .y = vesa_height,
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| 107 | .scan = vesa_scanline,
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| 108 | .visual = visual,
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| 109 | };
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| 110 | fb_init(&vesa_props);
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| 111 | }
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| 112 |
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| 113 | void vesa_redraw(void)
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| 114 | {
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| 115 | fb_redraw();
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| 116 | }
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| 117 |
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| 118 | #endif
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| 119 |
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| 120 | /** @}
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| 121 | */
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