1/*- 2 * Copyright (c) 2014 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Aleksandr Rybalko under sponsorship from the 6 * FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: releng/10.3/sys/dev/vt/hw/efifb/efifb.c 287128 2015-08-25 15:14:50Z marcel $ 30 */ 31 32#include <sys/cdefs.h> 33__FBSDID("$FreeBSD: releng/10.3/sys/dev/vt/hw/efifb/efifb.c 287128 2015-08-25 15:14:50Z marcel $"); 34 35#include <sys/param.h> 36#include <sys/systm.h> 37#include <sys/kernel.h> 38#include <sys/fbio.h> 39#include <sys/linker.h> 40 41#include "opt_platform.h" 42 43#include <machine/metadata.h> 44#include <machine/vm.h> 45#include <machine/vmparam.h> 46#include <vm/vm.h> 47#include <vm/pmap.h> 48#include <machine/pmap.h> 49 50#include <dev/vt/vt.h> 51#include <dev/vt/hw/fb/vt_fb.h> 52#include <dev/vt/colors/vt_termcolors.h> 53 54static vd_init_t vt_efifb_init; 55static vd_probe_t vt_efifb_probe; 56 57static struct vt_driver vt_efifb_driver = { 58 .vd_name = "efifb", 59 .vd_probe = vt_efifb_probe, 60 .vd_init = vt_efifb_init, 61 .vd_blank = vt_fb_blank, 62 .vd_bitblt_text = vt_fb_bitblt_text, 63 .vd_bitblt_bmp = vt_fb_bitblt_bitmap, 64 .vd_drawrect = vt_fb_drawrect, 65 .vd_setpixel = vt_fb_setpixel, 66 .vd_fb_ioctl = vt_fb_ioctl, 67 .vd_fb_mmap = vt_fb_mmap, 68 /* Better than VGA, but still generic driver. */ 69 .vd_priority = VD_PRIORITY_GENERIC + 1, 70}; 71 72static struct fb_info local_info; 73VT_DRIVER_DECLARE(vt_efifb, vt_efifb_driver); 74 75static int 76vt_efifb_probe(struct vt_device *vd) 77{ 78 int disabled; 79 struct efi_fb *efifb; 80 caddr_t kmdp; 81 82 disabled = 0; 83 TUNABLE_INT_FETCH("hw.syscons.disable", &disabled); 84 if (disabled != 0) 85 return (CN_DEAD); 86 87 kmdp = preload_search_by_type("elf kernel"); 88 if (kmdp == NULL) 89 kmdp = preload_search_by_type("elf64 kernel"); 90 efifb = (struct efi_fb *)preload_search_info(kmdp, 91 MODINFO_METADATA | MODINFOMD_EFI_FB); 92 if (efifb == NULL) 93 return (CN_DEAD); 94 95 return (CN_INTERNAL); 96} 97 98static int 99vt_efifb_init(struct vt_device *vd) 100{ 101 struct fb_info *info; 102 struct efi_fb *efifb; 103 caddr_t kmdp; 104 105 info = vd->vd_softc; 106 if (info == NULL) 107 info = vd->vd_softc = (void *)&local_info; 108 109 kmdp = preload_search_by_type("elf kernel"); 110 if (kmdp == NULL) 111 kmdp = preload_search_by_type("elf64 kernel"); 112 efifb = (struct efi_fb *)preload_search_info(kmdp, 113 MODINFO_METADATA | MODINFOMD_EFI_FB); 114 if (efifb == NULL) 115 return (CN_DEAD); 116 117 info->fb_height = efifb->fb_height; 118 info->fb_width = efifb->fb_width; 119 120 info->fb_depth = fls(efifb->fb_mask_red | efifb->fb_mask_green | 121 efifb->fb_mask_blue | efifb->fb_mask_reserved); 122 /* Round to a multiple of the bits in a byte. */ 123 info->fb_bpp = (info->fb_depth + NBBY - 1) & ~(NBBY - 1); 124 125 /* Stride in bytes, not pixels */ 126 info->fb_stride = efifb->fb_stride * (info->fb_bpp / NBBY); 127 128 vt_generate_cons_palette(info->fb_cmap, COLOR_FORMAT_RGB, 129 efifb->fb_mask_red, ffs(efifb->fb_mask_red) - 1, 130 efifb->fb_mask_green, ffs(efifb->fb_mask_green) - 1, 131 efifb->fb_mask_blue, ffs(efifb->fb_mask_blue) - 1); 132 133 info->fb_size = info->fb_height * info->fb_stride; 134 info->fb_pbase = efifb->fb_addr; 135 info->fb_vbase = (intptr_t)pmap_mapdev_attr(info->fb_pbase, 136 info->fb_size, VM_MEMATTR_WRITE_COMBINING); 137 138 vt_fb_init(vd); 139 140 return (CN_INTERNAL); 141} 142