1 /* 2 * Copyright (c) 2024 Netflix, Inc. 3 * 4 * SPDX-License-Identifier: BSD-2-Clause 5 */ 6 7 /* 8 * This file provides all the gfx glue, or stubs, so that we can build, if we 9 * want, two versions of the bios loader: one with graphics support and one 10 * without. This allows us to keep the calls in other places, like libraries 11 * that are tricky to compile twice. It also reduces the number of ifdefs we 12 * need to support the old text-only video console. This could also be two 13 * separate files, but it is short and having it all here helps to constrain 14 * dependency creap somewhat. 15 */ 16 17 #include <stand.h> 18 #ifndef BIOS_TEXT_ONLY 19 #include "bootstrap.h" 20 #include "libi386/libi386.h" 21 #include "libi386/vbe.h" 22 #include <gfx_fb.h> 23 #endif 24 25 #ifdef BIOS_TEXT_ONLY 26 void autoload_font(bool bios); 27 28 void 29 autoload_font(bool bios) 30 { 31 } 32 33 vm_offset_t build_font_module(vm_offset_t addr); 34 35 vm_offset_t 36 build_font_module(vm_offset_t addr) 37 { 38 return addr; 39 } 40 41 struct preloaded_file; 42 void bi_load_vbe_data(struct preloaded_file *kfp); 43 44 void bi_load_vbe_data(struct preloaded_file *kfp) 45 { 46 } 47 48 #else 49 50 void 51 bi_load_vbe_data(struct preloaded_file *kfp) 52 { 53 if (!kfp->f_tg_kernel_support) { 54 /* 55 * Loaded kernel does not have vt/vbe backend, 56 * switch console to text mode. 57 */ 58 if (vbe_available()) 59 bios_set_text_mode(VGA_TEXT_MODE); 60 return; 61 } 62 63 if (vbe_available()) { 64 file_addmetadata(kfp, MODINFOMD_VBE_FB, 65 sizeof(gfx_state.tg_fb), &gfx_state.tg_fb); 66 } 67 } 68 #endif 69