//----------------------------------------------------------------------------// // GNU GPL OS/K // // // // Desc: Initialization of boot info // // // // // // Copyright © 2018-2019 The OS/K Team // // // // This file is part of OS/K. // // // // OS/K is free software: you can redistribute it and/or modify // // it under the terms of the GNU General Public License as published by // // the Free Software Foundation, either version 3 of the License, or // // any later version. // // // // OS/K is distributed in the hope that it will be useful, // // but WITHOUT ANY WARRANTY//without even the implied warranty of // // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // // GNU General Public License for more details. // // // // You should have received a copy of the GNU General Public License // // along with OS/K. If not, see <https://www.gnu.org/licenses/>. // //----------------------------------------------------------------------------// #include <init/boot.h> // // BootInfo_t initialization. It is necessary because grub will potentially be // wiped since it is below 1MB.... And we must reorganize all that stuff. // void BtInitBootInfo(multiboot_info_t *mbi, void *codeSeg) { extern ulong BtHeader; extern ulong newKernelEnd; extern ulong newStackEnd; // We need the multiboot structure assert_always(mbi); // Retrieves the bootloader flags to ensure infos are valid BtLoaderInfo.grubFlags = mbi->flags; if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_BOOT_LOADER_NAME) { BtLoaderInfo.grubName = (char*)(ulong)(mbi->boot_loader_name); BtLoaderInfo.kernelAddr = (void*)&BtHeader; BtLoaderInfo.kernelEndAddr = (void*)newKernelEnd; BtLoaderInfo.stackEndAddr = (void*)newStackEnd; BtLoaderInfo.codeSegment = codeSeg; BtLoaderInfo.valid = 1; } if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_MODS) { BtLoaderInfo.modulesCount = mbi->mods_count; BtLoaderInfo.modulesAddr = (void*)(ulong)mbi->mods_addr; } // Retrieves the drives informations if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_DRIVE_INFO) { BtBootTab.drives.bufferLength = mbi->drives_length; BtBootTab.drives.bufferAddr = (void*)(ulong)mbi->drives_addr; BtBootTab.drives.bufferValid = 1; } if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_BOOTDEV) { BtBootTab.drives.bootDrv = mbi->boot_device; BtBootTab.drives.drvValid = 1; } // Retrieves the memory informations if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_MEMORY) { BtMemoryInfo.lowMemory = mbi->mem_lower; BtMemoryInfo.upMemory = mbi->mem_upper; BtMemoryInfo.memValid = 1; } if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_MEM_MAP) { BtMemoryInfo.mapAddr = (void*)(ulong)mbi->mmap_addr; BtMemoryInfo.mapLength = mbi->mmap_length; BtMemoryInfo.mapValid = 1; } // Retrieves video mode informations if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_VBE_INFO) { BtVideoInfo.vbeControl = (void*)(ulong)mbi->vbe_control_info; BtVideoInfo.vbeModeInfo = (void*)(ulong)mbi->vbe_mode_info; BtVideoInfo.vbeMode = mbi->vbe_mode; BtVideoInfo.vbeInterfaceSeg = mbi->vbe_interface_seg; BtVideoInfo.vbeInterfaceOff = mbi->vbe_interface_off; BtVideoInfo.vbeInterfaceLen = mbi->vbe_interface_len; BtVideoInfo.vbeValid = 1; } if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_FRAMEBUFFER_INFO) { BtVideoInfo.framebufferAddr = (void*)mbi->framebuffer_addr; BtVideoInfo.framebufferPitch = mbi->framebuffer_pitch; BtVideoInfo.framebufferWidth = mbi->framebuffer_width; BtVideoInfo.framebufferHeight= mbi->framebuffer_height; BtVideoInfo.framebufferBpp = mbi->framebuffer_bpp; BtVideoInfo.framebufferType = mbi->framebuffer_type; BtVideoInfo.fbuValid = 1; } // Retrieves the firmware infos if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_CONFIG_TABLE) { BtFirmwareInfo.romTable = mbi->config_table; BtFirmwareInfo.romValid = 1; } if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_APM_TABLE) { BtFirmwareInfo.apmTable = mbi->apm_table; BtFirmwareInfo.apmValid = 1; } } void BtDoSanityChecks(uint mbMagic) { if (!(mbMagic == MULTIBOOT_BOOTLOADER_MAGIC)) KeStartPanic("Magic number %x is incorrect\n", mbMagic); DebugLog("\t Kernel successfully loaded at %p\n", BtLoaderInfo.kernelAddr); }