1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2014 The FreeBSD Foundation 5 * 6 * This software was developed by Aleksandr Rybalko under sponsorship from the 7 * FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/fbio.h> 38 #include <sys/linker.h> 39 40 #include "opt_platform.h" 41 42 #include <machine/metadata.h> 43 #include <machine/vmparam.h> 44 #include <vm/vm.h> 45 #include <vm/pmap.h> 46 47 #include <dev/vt/vt.h> 48 #include <dev/vt/hw/fb/vt_fb.h> 49 #include <dev/vt/colors/vt_termcolors.h> 50 51 static vd_init_t vt_efifb_init; 52 static vd_fini_t vt_efifb_fini; 53 static vd_probe_t vt_efifb_probe; 54 55 static struct vt_driver vt_efifb_driver = { 56 .vd_name = "efifb", 57 .vd_probe = vt_efifb_probe, 58 .vd_init = vt_efifb_init, 59 .vd_fini = vt_efifb_fini, 60 .vd_blank = vt_fb_blank, 61 .vd_bitblt_text = vt_fb_bitblt_text, 62 .vd_invalidate_text = vt_fb_invalidate_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 .vd_suspend = vt_suspend, 69 .vd_resume = vt_resume, 70 /* Better than VGA, but still generic driver. */ 71 .vd_priority = VD_PRIORITY_GENERIC + 1, 72 }; 73 74 static struct fb_info local_info; 75 VT_DRIVER_DECLARE(vt_efifb, vt_efifb_driver); 76 77 static int 78 vt_efifb_probe(struct vt_device *vd) 79 { 80 int disabled; 81 struct efi_fb *efifb; 82 caddr_t kmdp; 83 84 disabled = 0; 85 TUNABLE_INT_FETCH("hw.syscons.disable", &disabled); 86 if (disabled != 0) 87 return (CN_DEAD); 88 89 kmdp = preload_search_by_type("elf kernel"); 90 if (kmdp == NULL) 91 kmdp = preload_search_by_type("elf64 kernel"); 92 efifb = (struct efi_fb *)preload_search_info(kmdp, 93 MODINFO_METADATA | MODINFOMD_EFI_FB); 94 if (efifb == NULL) 95 return (CN_DEAD); 96 97 return (CN_INTERNAL); 98 } 99 100 static int 101 vt_efifb_init(struct vt_device *vd) 102 { 103 struct fb_info *info; 104 struct efi_fb *efifb; 105 caddr_t kmdp; 106 int roff, goff, boff; 107 108 info = vd->vd_softc; 109 if (info == NULL) 110 info = vd->vd_softc = (void *)&local_info; 111 112 kmdp = preload_search_by_type("elf kernel"); 113 if (kmdp == NULL) 114 kmdp = preload_search_by_type("elf64 kernel"); 115 efifb = (struct efi_fb *)preload_search_info(kmdp, 116 MODINFO_METADATA | MODINFOMD_EFI_FB); 117 if (efifb == NULL) 118 return (CN_DEAD); 119 120 info->fb_height = efifb->fb_height; 121 info->fb_width = efifb->fb_width; 122 123 info->fb_depth = fls(efifb->fb_mask_red | efifb->fb_mask_green | 124 efifb->fb_mask_blue | efifb->fb_mask_reserved); 125 /* Round to a multiple of the bits in a byte. */ 126 info->fb_bpp = roundup2(info->fb_depth, NBBY); 127 128 /* Stride in bytes, not pixels */ 129 info->fb_stride = efifb->fb_stride * (info->fb_bpp / NBBY); 130 131 roff = ffs(efifb->fb_mask_red) - 1; 132 goff = ffs(efifb->fb_mask_green) - 1; 133 boff = ffs(efifb->fb_mask_blue) - 1; 134 vt_generate_cons_palette(info->fb_cmap, COLOR_FORMAT_RGB, 135 efifb->fb_mask_red >> roff, roff, 136 efifb->fb_mask_green >> goff, goff, 137 efifb->fb_mask_blue >> boff, boff); 138 info->fb_cmsize = NCOLORS; 139 140 info->fb_size = info->fb_height * info->fb_stride; 141 info->fb_pbase = efifb->fb_addr; 142 info->fb_vbase = (intptr_t)pmap_mapdev_attr(info->fb_pbase, 143 info->fb_size, VM_MEMATTR_WRITE_COMBINING); 144 145 vt_fb_init(vd); 146 147 return (CN_INTERNAL); 148 } 149 150 static void 151 vt_efifb_fini(struct vt_device *vd, void *softc) 152 { 153 struct fb_info *info = softc; 154 155 vt_fb_fini(vd, softc); 156 pmap_unmapdev(info->fb_vbase, info->fb_size); 157 } 158