efifb.c revision 287126
1141296Sdas/*- 2141296Sdas * Copyright (c) 2014 The FreeBSD Foundation 32116Sjkh * All rights reserved. 42116Sjkh * 52116Sjkh * This software was developed by Aleksandr Rybalko under sponsorship from the 62116Sjkh * FreeBSD Foundation. 7141296Sdas * 82116Sjkh * Redistribution and use in source and binary forms, with or without 9141296Sdas * modification, are permitted provided that the following conditions 102116Sjkh * are met: 112116Sjkh * 1. Redistributions of source code must retain the above copyright 122116Sjkh * notice, this list of conditions and the following disclaimer. 132116Sjkh * 2. Redistributions in binary form must reproduce the above copyright 14176408Sbde * notice, this list of conditions and the following disclaimer in the 15176408Sbde * documentation and/or other materials provided with the distribution. 162116Sjkh * 172116Sjkh * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18151966Sbde * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 192116Sjkh * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 202116Sjkh * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21141296Sdas * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 222116Sjkh * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 232116Sjkh * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24141296Sdas * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25151966Sbde * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26151966Sbde * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27151966Sbde * SUCH DAMAGE. 282116Sjkh * 292116Sjkh * $FreeBSD: stable/10/sys/dev/vt/hw/efifb/efifb.c 287126 2015-08-25 14:39:40Z marcel $ 302116Sjkh */ 312116Sjkh 322116Sjkh#include <sys/cdefs.h> 33141296Sdas__FBSDID("$FreeBSD: stable/10/sys/dev/vt/hw/efifb/efifb.c 287126 2015-08-25 14:39:40Z marcel $"); 342116Sjkh 352116Sjkh#include <sys/param.h> 36141296Sdas#include <sys/systm.h> 37141296Sdas#include <sys/kernel.h> 382116Sjkh#include <sys/fbio.h> 392116Sjkh#include <sys/linker.h> 40141296Sdas 412116Sjkh#include "opt_platform.h" 422116Sjkh 432116Sjkh#include <machine/metadata.h> 442116Sjkh#include <machine/vm.h> 452116Sjkh#include <machine/vmparam.h> 462116Sjkh#include <vm/vm.h> 472116Sjkh#include <vm/pmap.h> 482116Sjkh#include <machine/pmap.h> 492116Sjkh 508870Srgrimes#include <dev/vt/vt.h> 512116Sjkh#include <dev/vt/hw/fb/vt_fb.h> 522116Sjkh#include <dev/vt/colors/vt_termcolors.h> 532116Sjkh 542116Sjkhstatic vd_init_t vt_efifb_init; 552116Sjkhstatic vd_probe_t vt_efifb_probe; 562116Sjkh 572116Sjkhstatic struct vt_driver vt_efifb_driver = { 582116Sjkh .vd_name = "efifb", 5997413Salfred .vd_probe = vt_efifb_probe, 6097413Salfred .vd_init = vt_efifb_init, 612116Sjkh .vd_blank = vt_fb_blank, 62176408Sbde .vd_bitblt_text = vt_fb_bitblt_text, 63151620Sbde .vd_bitblt_bmp = vt_fb_bitblt_bitmap, 642116Sjkh .vd_drawrect = vt_fb_drawrect, 65176408Sbde .vd_setpixel = vt_fb_setpixel, 66176408Sbde .vd_fb_ioctl = vt_fb_ioctl, 672116Sjkh .vd_fb_mmap = vt_fb_mmap, 682116Sjkh /* Better than VGA, but still generic driver. */ 692116Sjkh .vd_priority = VD_PRIORITY_GENERIC + 1, 702116Sjkh}; 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 int depth, d; 102 struct fb_info *info; 103 struct efi_fb *efifb; 104 caddr_t kmdp; 105 106 info = vd->vd_softc; 107 if (info == NULL) 108 info = vd->vd_softc = (void *)&local_info; 109 110 kmdp = preload_search_by_type("elf kernel"); 111 if (kmdp == NULL) 112 kmdp = preload_search_by_type("elf64 kernel"); 113 efifb = (struct efi_fb *)preload_search_info(kmdp, 114 MODINFO_METADATA | MODINFOMD_EFI_FB); 115 if (efifb == NULL) 116 return (CN_DEAD); 117 118 info->fb_height = efifb->fb_height; 119 info->fb_width = efifb->fb_width; 120 121 depth = fls(efifb->fb_mask_red); 122 d = fls(efifb->fb_mask_green); 123 depth = d > depth ? d : depth; 124 d = fls(efifb->fb_mask_blue); 125 depth = d > depth ? d : depth; 126 d = fls(efifb->fb_mask_reserved); 127 depth = d > depth ? d : depth; 128 info->fb_depth = depth; 129 130 info->fb_stride = efifb->fb_stride * (depth / 8); 131 132 vt_generate_cons_palette(info->fb_cmap, COLOR_FORMAT_RGB, 133 efifb->fb_mask_red, ffs(efifb->fb_mask_red) - 1, 134 efifb->fb_mask_green, ffs(efifb->fb_mask_green) - 1, 135 efifb->fb_mask_blue, ffs(efifb->fb_mask_blue) - 1); 136 137 info->fb_size = info->fb_height * info->fb_stride; 138 info->fb_pbase = efifb->fb_addr; 139 info->fb_vbase = (intptr_t)pmap_mapdev_attr(info->fb_pbase, 140 info->fb_size, VM_MEMATTR_WRITE_COMBINING); 141 142 /* Get pixel storage size. */ 143 info->fb_bpp = info->fb_stride / info->fb_width * 8; 144 145 /* 146 * Early FB driver work with static window buffer, so reduce to minimal 147 * size, buffer or screen. 148 */ 149 info->fb_width = MIN(info->fb_width, VT_FB_DEFAULT_WIDTH); 150 info->fb_height = MIN(info->fb_height, VT_FB_DEFAULT_HEIGHT); 151 152 vt_fb_init(vd); 153 154 return (CN_INTERNAL); 155} 156