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 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/fbio.h> 37 #include <sys/linker.h> 38 39 #include "opt_platform.h" 40 41 #include <machine/metadata.h> 42 #include <machine/vmparam.h> 43 #include <vm/vm.h> 44 #include <vm/pmap.h> 45 46 #include <dev/vt/vt.h> 47 #include <dev/vt/hw/fb/vt_fb.h> 48 #include <dev/vt/colors/vt_termcolors.h> 49 50 static vd_init_t vt_efifb_init; 51 static vd_probe_t vt_efifb_probe; 52 53 static struct vt_driver vt_efifb_driver = { 54 .vd_name = "efifb", 55 .vd_probe = vt_efifb_probe, 56 .vd_init = vt_efifb_init, 57 .vd_blank = vt_fb_blank, 58 .vd_bitblt_text = vt_fb_bitblt_text, 59 .vd_bitblt_bmp = vt_fb_bitblt_bitmap, 60 .vd_drawrect = vt_fb_drawrect, 61 .vd_setpixel = vt_fb_setpixel, 62 .vd_fb_ioctl = vt_fb_ioctl, 63 .vd_fb_mmap = vt_fb_mmap, 64 /* Better than VGA, but still generic driver. */ 65 .vd_priority = VD_PRIORITY_GENERIC + 1, 66 }; 67 68 static struct fb_info local_info; 69 VT_DRIVER_DECLARE(vt_efifb, vt_efifb_driver); 70 71 static int 72 vt_efifb_probe(struct vt_device *vd) 73 { 74 int disabled; 75 struct efi_fb *efifb; 76 caddr_t kmdp; 77 78 disabled = 0; 79 TUNABLE_INT_FETCH("hw.syscons.disable", &disabled); 80 if (disabled != 0) 81 return (CN_DEAD); 82 83 kmdp = preload_search_by_type("elf kernel"); 84 if (kmdp == NULL) 85 kmdp = preload_search_by_type("elf64 kernel"); 86 efifb = (struct efi_fb *)preload_search_info(kmdp, 87 MODINFO_METADATA | MODINFOMD_EFI_FB); 88 if (efifb == NULL) 89 return (CN_DEAD); 90 91 return (CN_INTERNAL); 92 } 93 94 static int 95 vt_efifb_init(struct vt_device *vd) 96 { 97 struct fb_info *info; 98 struct efi_fb *efifb; 99 caddr_t kmdp; 100 101 info = vd->vd_softc; 102 if (info == NULL) 103 info = vd->vd_softc = (void *)&local_info; 104 105 kmdp = preload_search_by_type("elf kernel"); 106 if (kmdp == NULL) 107 kmdp = preload_search_by_type("elf64 kernel"); 108 efifb = (struct efi_fb *)preload_search_info(kmdp, 109 MODINFO_METADATA | MODINFOMD_EFI_FB); 110 if (efifb == NULL) 111 return (CN_DEAD); 112 113 info->fb_height = efifb->fb_height; 114 info->fb_width = efifb->fb_width; 115 116 info->fb_depth = fls(efifb->fb_mask_red | efifb->fb_mask_green | 117 efifb->fb_mask_blue | efifb->fb_mask_reserved); 118 /* Round to a multiple of the bits in a byte. */ 119 info->fb_bpp = roundup2(info->fb_depth, NBBY); 120 121 /* Stride in bytes, not pixels */ 122 info->fb_stride = efifb->fb_stride * (info->fb_bpp / NBBY); 123 124 vt_generate_cons_palette(info->fb_cmap, COLOR_FORMAT_RGB, 125 efifb->fb_mask_red, ffs(efifb->fb_mask_red) - 1, 126 efifb->fb_mask_green, ffs(efifb->fb_mask_green) - 1, 127 efifb->fb_mask_blue, ffs(efifb->fb_mask_blue) - 1); 128 129 info->fb_size = info->fb_height * info->fb_stride; 130 info->fb_pbase = efifb->fb_addr; 131 info->fb_vbase = (intptr_t)pmap_mapdev_attr(info->fb_pbase, 132 info->fb_size, VM_MEMATTR_WRITE_COMBINING); 133 134 vt_fb_init(vd); 135 136 return (CN_INTERNAL); 137 } 138