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/vm.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_probe_t vt_efifb_probe; 53 54 static struct vt_driver vt_efifb_driver = { 55 .vd_name = "efifb", 56 .vd_probe = vt_efifb_probe, 57 .vd_init = vt_efifb_init, 58 .vd_blank = vt_fb_blank, 59 .vd_bitblt_text = vt_fb_bitblt_text, 60 .vd_bitblt_bmp = vt_fb_bitblt_bitmap, 61 .vd_drawrect = vt_fb_drawrect, 62 .vd_setpixel = vt_fb_setpixel, 63 .vd_fb_ioctl = vt_fb_ioctl, 64 .vd_fb_mmap = vt_fb_mmap, 65 /* Better than VGA, but still generic driver. */ 66 .vd_priority = VD_PRIORITY_GENERIC + 1, 67 }; 68 69 static struct fb_info local_info; 70 VT_DRIVER_DECLARE(vt_efifb, vt_efifb_driver); 71 72 static int 73 vt_efifb_probe(struct vt_device *vd) 74 { 75 int disabled; 76 struct efi_fb *efifb; 77 caddr_t kmdp; 78 79 disabled = 0; 80 TUNABLE_INT_FETCH("hw.syscons.disable", &disabled); 81 if (disabled != 0) 82 return (CN_DEAD); 83 84 kmdp = preload_search_by_type("elf kernel"); 85 if (kmdp == NULL) 86 kmdp = preload_search_by_type("elf64 kernel"); 87 efifb = (struct efi_fb *)preload_search_info(kmdp, 88 MODINFO_METADATA | MODINFOMD_EFI_FB); 89 if (efifb == NULL) 90 return (CN_DEAD); 91 92 return (CN_INTERNAL); 93 } 94 95 static int 96 vt_efifb_init(struct vt_device *vd) 97 { 98 struct fb_info *info; 99 struct efi_fb *efifb; 100 caddr_t kmdp; 101 102 info = vd->vd_softc; 103 if (info == NULL) 104 info = vd->vd_softc = (void *)&local_info; 105 106 kmdp = preload_search_by_type("elf kernel"); 107 if (kmdp == NULL) 108 kmdp = preload_search_by_type("elf64 kernel"); 109 efifb = (struct efi_fb *)preload_search_info(kmdp, 110 MODINFO_METADATA | MODINFOMD_EFI_FB); 111 if (efifb == NULL) 112 return (CN_DEAD); 113 114 info->fb_height = efifb->fb_height; 115 info->fb_width = efifb->fb_width; 116 117 info->fb_depth = fls(efifb->fb_mask_red | efifb->fb_mask_green | 118 efifb->fb_mask_blue | efifb->fb_mask_reserved); 119 /* Round to a multiple of the bits in a byte. */ 120 info->fb_bpp = (info->fb_depth + NBBY - 1) & ~(NBBY - 1); 121 122 /* Stride in bytes, not pixels */ 123 info->fb_stride = efifb->fb_stride * (info->fb_bpp / NBBY); 124 125 vt_generate_cons_palette(info->fb_cmap, COLOR_FORMAT_RGB, 126 efifb->fb_mask_red, ffs(efifb->fb_mask_red) - 1, 127 efifb->fb_mask_green, ffs(efifb->fb_mask_green) - 1, 128 efifb->fb_mask_blue, ffs(efifb->fb_mask_blue) - 1); 129 130 info->fb_size = info->fb_height * info->fb_stride; 131 info->fb_pbase = efifb->fb_addr; 132 info->fb_vbase = (intptr_t)pmap_mapdev_attr(info->fb_pbase, 133 info->fb_size, VM_MEMATTR_WRITE_COMBINING); 134 135 vt_fb_init(vd); 136 137 return (CN_INTERNAL); 138 } 139