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https://github.com/EnderIce2/Fennix.git
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Merge remote-tracking branch 'Kernel/master'
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EnderIce2
284
Kernel/arch/amd64/bootstrap/multiboot/mb2_parse.cpp
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284
Kernel/arch/amd64/bootstrap/multiboot/mb2_parse.cpp
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/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <types.h>
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#include <boot/protocol/multiboot2.h>
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#include <memory.hpp>
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#include "../../../../kernel.h"
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void multiboot2_parse(BootInfo &mb2binfo, uintptr_t Magic, uintptr_t Info)
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{
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auto InfoAddress = Info;
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for (auto Tag = (struct multiboot_tag *)((uint8_t *)InfoAddress + 8);
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;
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Tag = (struct multiboot_tag *)((multiboot_uint8_t *)Tag + ((Tag->size + 7) & ~7)))
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{
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if (Tag->type == MULTIBOOT_TAG_TYPE_END)
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{
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debug("End of multiboot2 tags");
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break;
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}
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switch (Tag->type)
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{
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case MULTIBOOT_TAG_TYPE_CMDLINE:
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{
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strncpy(mb2binfo.Kernel.CommandLine,
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((multiboot_tag_string *)Tag)->string,
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strlen(((multiboot_tag_string *)Tag)->string));
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debug("Kernel command line: %s", mb2binfo.Kernel.CommandLine);
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break;
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}
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case MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME:
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{
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strncpy(mb2binfo.Bootloader.Name,
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((multiboot_tag_string *)Tag)->string,
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strlen(((multiboot_tag_string *)Tag)->string));
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debug("Bootloader name: %s", mb2binfo.Bootloader.Name);
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break;
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}
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case MULTIBOOT_TAG_TYPE_MODULE:
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{
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multiboot_tag_module *module = (multiboot_tag_module *)Tag;
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static int module_count = 0;
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mb2binfo.Modules[module_count].Address = (void *)(uint64_t)module->mod_start;
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mb2binfo.Modules[module_count].Size = module->mod_end - module->mod_start;
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strncpy(mb2binfo.Modules[module_count].Path, "(null)", 6);
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strncpy(mb2binfo.Modules[module_count].CommandLine, module->cmdline,
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strlen(module->cmdline));
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debug("Module: %s", mb2binfo.Modules[module_count].Path);
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module_count++;
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break;
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}
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case MULTIBOOT_TAG_TYPE_BASIC_MEMINFO:
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{
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multiboot_tag_basic_meminfo *meminfo = (multiboot_tag_basic_meminfo *)Tag;
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fixme("basic_meminfo->[mem_lower: %#x, mem_upper: %#x]",
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meminfo->mem_lower, meminfo->mem_upper);
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break;
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}
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case MULTIBOOT_TAG_TYPE_BOOTDEV:
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{
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multiboot_tag_bootdev *bootdev = (multiboot_tag_bootdev *)Tag;
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fixme("bootdev->[biosdev: %#x, slice: %#x, part: %#x]",
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bootdev->biosdev, bootdev->slice, bootdev->part);
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break;
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}
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case MULTIBOOT_TAG_TYPE_MMAP:
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{
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multiboot_tag_mmap *mmap = (multiboot_tag_mmap *)Tag;
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size_t EntryCount = mmap->size / sizeof(multiboot_mmap_entry);
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mb2binfo.Memory.Entries = EntryCount;
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for (uint32_t i = 0; i < EntryCount; i++)
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{
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if (i > MAX_MEMORY_ENTRIES)
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{
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warn("Too many memory entries, skipping the rest...");
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break;
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}
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multiboot_mmap_entry entry = mmap->entries[i];
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mb2binfo.Memory.Size += entry.len;
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switch (entry.type)
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{
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case MULTIBOOT_MEMORY_AVAILABLE:
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mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
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mb2binfo.Memory.Entry[i].Length = entry.len;
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mb2binfo.Memory.Entry[i].Type = Usable;
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break;
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case MULTIBOOT_MEMORY_RESERVED:
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mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
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mb2binfo.Memory.Entry[i].Length = entry.len;
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mb2binfo.Memory.Entry[i].Type = Reserved;
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break;
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case MULTIBOOT_MEMORY_ACPI_RECLAIMABLE:
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mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
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mb2binfo.Memory.Entry[i].Length = entry.len;
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mb2binfo.Memory.Entry[i].Type = ACPIReclaimable;
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break;
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case MULTIBOOT_MEMORY_NVS:
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mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
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mb2binfo.Memory.Entry[i].Length = entry.len;
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mb2binfo.Memory.Entry[i].Type = ACPINVS;
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break;
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case MULTIBOOT_MEMORY_BADRAM:
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mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
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mb2binfo.Memory.Entry[i].Length = entry.len;
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mb2binfo.Memory.Entry[i].Type = BadMemory;
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break;
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default:
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mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
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mb2binfo.Memory.Entry[i].Length = entry.len;
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mb2binfo.Memory.Entry[i].Type = Unknown;
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break;
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}
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debug("Memory entry: [BaseAddress: %#x, Length: %#x, Type: %d]",
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mb2binfo.Memory.Entry[i].BaseAddress,
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mb2binfo.Memory.Entry[i].Length,
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mb2binfo.Memory.Entry[i].Type);
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}
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break;
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}
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case MULTIBOOT_TAG_TYPE_VBE:
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{
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multiboot_tag_vbe *vbe = (multiboot_tag_vbe *)Tag;
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fixme("vbe->[vbe_mode: %#x, vbe_interface_seg: %#x, vbe_interface_off: %#x, vbe_interface_len: %#x]",
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vbe->vbe_mode, vbe->vbe_interface_seg, vbe->vbe_interface_off, vbe->vbe_interface_len);
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break;
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}
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case MULTIBOOT_TAG_TYPE_FRAMEBUFFER:
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{
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multiboot_tag_framebuffer *fb = (multiboot_tag_framebuffer *)Tag;
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static int fb_count = 0;
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mb2binfo.Framebuffer[fb_count].BaseAddress = (void *)fb->common.framebuffer_addr;
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mb2binfo.Framebuffer[fb_count].Width = fb->common.framebuffer_width;
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mb2binfo.Framebuffer[fb_count].Height = fb->common.framebuffer_height;
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mb2binfo.Framebuffer[fb_count].Pitch = fb->common.framebuffer_pitch;
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mb2binfo.Framebuffer[fb_count].BitsPerPixel = fb->common.framebuffer_bpp;
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switch (fb->common.framebuffer_type)
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{
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case MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED:
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{
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mb2binfo.Framebuffer[fb_count].Type = Indexed;
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break;
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}
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case MULTIBOOT_FRAMEBUFFER_TYPE_RGB:
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{
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mb2binfo.Framebuffer[fb_count].Type = RGB;
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mb2binfo.Framebuffer[fb_count].RedMaskSize = fb->framebuffer_red_mask_size;
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mb2binfo.Framebuffer[fb_count].RedMaskShift = fb->framebuffer_red_field_position;
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mb2binfo.Framebuffer[fb_count].GreenMaskSize = fb->framebuffer_green_mask_size;
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mb2binfo.Framebuffer[fb_count].GreenMaskShift = fb->framebuffer_green_field_position;
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mb2binfo.Framebuffer[fb_count].BlueMaskSize = fb->framebuffer_blue_mask_size;
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mb2binfo.Framebuffer[fb_count].BlueMaskShift = fb->framebuffer_blue_field_position;
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break;
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}
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case MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT:
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{
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mb2binfo.Framebuffer[fb_count].Type = EGA;
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break;
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}
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default:
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{
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mb2binfo.Framebuffer[fb_count].Type = Unknown_Framebuffer_Type;
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break;
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}
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}
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debug("Framebuffer %d: %dx%d %d bpp", fb_count, fb->common.framebuffer_width, fb->common.framebuffer_height, fb->common.framebuffer_bpp);
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debug("More info:\nAddress: %p\nPitch: %d\nMemoryModel: %d\nRedMaskSize: %d\nRedMaskShift: %d\nGreenMaskSize: %d\nGreenMaskShift: %d\nBlueMaskSize: %d\nBlueMaskShift: %d",
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fb->common.framebuffer_addr, fb->common.framebuffer_pitch, fb->common.framebuffer_type,
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fb->framebuffer_red_mask_size, fb->framebuffer_red_field_position, fb->framebuffer_green_mask_size,
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fb->framebuffer_green_field_position, fb->framebuffer_blue_mask_size, fb->framebuffer_blue_field_position);
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fb_count++;
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break;
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}
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case MULTIBOOT_TAG_TYPE_ELF_SECTIONS:
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{
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multiboot_tag_elf_sections *elf = (multiboot_tag_elf_sections *)Tag;
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mb2binfo.Kernel.Symbols.Num = elf->num;
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mb2binfo.Kernel.Symbols.EntSize = elf->entsize;
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mb2binfo.Kernel.Symbols.Shndx = elf->shndx;
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mb2binfo.Kernel.Symbols.Sections = r_cst(uintptr_t, elf->sections);
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break;
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}
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case MULTIBOOT_TAG_TYPE_APM:
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{
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multiboot_tag_apm *apm = (multiboot_tag_apm *)Tag;
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fixme("apm->[version: %d, cseg: %d, offset: %d, cseg_16: %d, dseg: %d, flags: %d, cseg_len: %d, cseg_16_len: %d, dseg_len: %d]",
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apm->version, apm->cseg, apm->offset, apm->cseg_16, apm->dseg, apm->flags, apm->cseg_len, apm->cseg_16_len, apm->dseg_len);
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break;
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}
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case MULTIBOOT_TAG_TYPE_EFI32:
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{
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multiboot_tag_efi32 *efi32 = (multiboot_tag_efi32 *)Tag;
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fixme("efi32->[pointer: %p, size: %d]", efi32->pointer, efi32->size);
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break;
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}
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case MULTIBOOT_TAG_TYPE_EFI64:
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{
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multiboot_tag_efi64 *efi64 = (multiboot_tag_efi64 *)Tag;
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fixme("efi64->[pointer: %p, size: %d]", efi64->pointer, efi64->size);
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break;
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}
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case MULTIBOOT_TAG_TYPE_SMBIOS:
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{
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multiboot_tag_smbios *smbios = (multiboot_tag_smbios *)Tag;
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fixme("smbios->[major: %d, minor: %d]", smbios->major, smbios->minor);
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break;
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}
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case MULTIBOOT_TAG_TYPE_ACPI_OLD:
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{
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mb2binfo.RSDP = (BootInfo::RSDPInfo *)((multiboot_tag_old_acpi *)Tag)->rsdp;
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debug("OLD ACPI RSDP: %p", mb2binfo.RSDP);
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break;
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}
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case MULTIBOOT_TAG_TYPE_ACPI_NEW:
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{
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mb2binfo.RSDP = (BootInfo::RSDPInfo *)((multiboot_tag_new_acpi *)Tag)->rsdp;
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debug("NEW ACPI RSDP: %p", mb2binfo.RSDP);
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break;
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}
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case MULTIBOOT_TAG_TYPE_NETWORK:
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{
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multiboot_tag_network *net = (multiboot_tag_network *)Tag;
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fixme("network->[dhcpack: %p]", net->dhcpack);
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break;
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}
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case MULTIBOOT_TAG_TYPE_EFI_MMAP:
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{
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multiboot_tag_efi_mmap *efi_mmap = (multiboot_tag_efi_mmap *)Tag;
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fixme("efi_mmap->[descr_size: %d, descr_vers: %d, efi_mmap: %p]",
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efi_mmap->descr_size, efi_mmap->descr_vers, efi_mmap->efi_mmap);
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break;
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}
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case MULTIBOOT_TAG_TYPE_EFI_BS:
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{
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fixme("efi_bs->[%p] (unknown structure)", Tag);
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break;
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}
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case MULTIBOOT_TAG_TYPE_EFI32_IH:
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{
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multiboot_tag_efi32_ih *efi32_ih = (multiboot_tag_efi32_ih *)Tag;
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fixme("efi32_ih->[pointer: %p]", efi32_ih->pointer);
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break;
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}
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case MULTIBOOT_TAG_TYPE_EFI64_IH:
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{
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multiboot_tag_efi64_ih *efi64_ih = (multiboot_tag_efi64_ih *)Tag;
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fixme("efi64_ih->[pointer: %p]", efi64_ih->pointer);
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break;
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}
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case MULTIBOOT_TAG_TYPE_LOAD_BASE_ADDR:
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{
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multiboot_tag_load_base_addr *load_base_addr = (multiboot_tag_load_base_addr *)Tag;
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mb2binfo.Kernel.PhysicalBase = (void *)(uint64_t)load_base_addr->load_base_addr;
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mb2binfo.Kernel.VirtualBase = (void *)(uint64_t)(load_base_addr->load_base_addr + 0xFFFFFFFF80000000);
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mb2binfo.Kernel.Size = ((uint64_t)&_kernel_end - (uint64_t)&_kernel_start) + ((uint64_t)&_bootstrap_end - (uint64_t)&_bootstrap_start);
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debug("Kernel base: %p (physical) %p (virtual)", mb2binfo.Kernel.PhysicalBase, mb2binfo.Kernel.VirtualBase);
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break;
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}
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default:
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{
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error("Unknown multiboot2 tag type: %d", Tag->type);
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break;
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}
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}
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}
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Entry(&mb2binfo);
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}
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