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 * $FreeBSD$ 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 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 54 static vd_init_t vt_efb_init; 55 56 static struct vt_driver vt_efb_driver = { 57 .vd_init = vt_efb_init, 58 .vd_blank = vt_fb_blank, 59 .vd_bitbltchr = vt_fb_bitbltchr, 60 /* Better than VGA, but still generic driver. */ 61 .vd_priority = VD_PRIORITY_GENERIC + 1, 62 }; 63 64 static struct fb_info info; 65 VT_CONSDEV_DECLARE(vt_efb_driver, 66 MAX(80, PIXEL_WIDTH(VT_FB_DEFAULT_WIDTH)), 67 MAX(25, PIXEL_HEIGHT(VT_FB_DEFAULT_HEIGHT)), &info); 68 69 static int 70 vt_efb_init(struct vt_device *vd) 71 { 72 int depth, d, disable, i, len; 73 struct fb_info *info; 74 struct efi_fb *efifb; 75 caddr_t kmdp; 76 77 info = vd->vd_softc; 78 79 disable = 0; 80 TUNABLE_INT_FETCH("hw.syscons.disable", &disable); 81 if (disable != 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 info->fb_height = efifb->fb_height; 93 info->fb_width = efifb->fb_width; 94 95 depth = fls(efifb->fb_mask_red); 96 d = fls(efifb->fb_mask_green); 97 depth = d > depth ? d : depth; 98 d = fls(efifb->fb_mask_blue); 99 depth = d > depth ? d : depth; 100 d = fls(efifb->fb_mask_reserved); 101 depth = d > depth ? d : depth; 102 info->fb_depth = depth; 103 104 info->fb_stride = efifb->fb_stride * (depth / 8); 105 106 vt_generate_vga_palette(info->fb_cmap, COLOR_FORMAT_RGB, 107 efifb->fb_mask_red, ffs(efifb->fb_mask_red) - 1, 108 efifb->fb_mask_green, ffs(efifb->fb_mask_green) - 1, 109 efifb->fb_mask_blue, ffs(efifb->fb_mask_blue) - 1); 110 111 info->fb_size = info->fb_height * info->fb_stride; 112 info->fb_pbase = efifb->fb_addr; 113 /* 114 * We could use pmap_mapdev here except that the kernel pmap 115 * hasn't been created yet and hence any attempt to lock it will 116 * fail. 117 */ 118 info->fb_vbase = PHYS_TO_DMAP(efifb->fb_addr); 119 120 /* blank full size */ 121 len = info->fb_size / 4; 122 for (i = 0; i < len; i++) { 123 ((uint32_t *)info->fb_vbase)[i] = 0; 124 } 125 126 /* Get pixel storage size. */ 127 info->fb_bpp = info->fb_stride / info->fb_width * 8; 128 129 /* 130 * Early FB driver work with static window buffer, so reduce to minimal 131 * size, buffer or screen. 132 */ 133 info->fb_width = MIN(info->fb_width, VT_FB_DEFAULT_WIDTH); 134 info->fb_height = MIN(info->fb_height, VT_FB_DEFAULT_HEIGHT); 135 136 fb_probe(info); 137 vt_fb_init(vd); 138 139 140 return (CN_INTERNAL); 141 } 142 143