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i change my mind we're going limine

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This commit is contained in:
SpookyDervish
2026-07-14 08:46:22 +10:00
parent 11c8a6cae9
commit 15e808a001
17 changed files with 1067 additions and 307 deletions
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7
.gitignore vendored
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@@ -1,4 +1,5 @@
CometOS.bin
bin/
iso_root/
limine-binary/
obj/
CometOS.iso
build/
iso/

166
GNUmakefile Normal file
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@@ -0,0 +1,166 @@
# Nuke built-in rules.
.SUFFIXES:
# This is the name that our final executable will have.
# Change as needed.
override OUTPUT := CometOS
# User controllable toolchain and toolchain prefix.
TOOLCHAIN :=
TOOLCHAIN_PREFIX :=
ifneq ($(TOOLCHAIN),)
ifeq ($(TOOLCHAIN_PREFIX),)
TOOLCHAIN_PREFIX := $(TOOLCHAIN)-
endif
endif
# User controllable C compiler command.
ifneq ($(TOOLCHAIN_PREFIX),)
CC := $(TOOLCHAIN_PREFIX)gcc
else
CC := cc
endif
# User controllable linker command.
LD := $(TOOLCHAIN_PREFIX)ld
# Defaults overrides for variables if using "llvm" as toolchain.
ifeq ($(TOOLCHAIN),llvm)
CC := clang
LD := ld.lld
endif
# User controllable C flags.
CFLAGS := -g -O2 -pipe
# User controllable C preprocessor flags. We set none by default.
CPPFLAGS :=
# User controllable nasm flags.
NASMFLAGS := -g
# User controllable linker flags. We set none by default.
LDFLAGS :=
# Check if CC is Clang.
override CC_IS_CLANG := $(shell ! $(CC) --version 2>/dev/null | grep -q '^Target: '; echo $$?)
# If the C compiler is Clang, set the target as needed.
ifeq ($(CC_IS_CLANG),1)
override CC += \
-target x86_64-unknown-none-elf
endif
# Internal C flags that should not be changed by the user.
override CFLAGS += \
-Wall \
-Wextra \
-std=gnu11 \
-ffreestanding \
-fno-stack-protector \
-fno-stack-check \
-fno-lto \
-fno-PIC \
-ffunction-sections \
-fdata-sections \
-m64 \
-march=x86-64 \
-mabi=sysv \
-mno-80387 \
-mno-mmx \
-mno-sse \
-mno-sse2 \
-mno-red-zone \
-mcmodel=kernel
# Internal C preprocessor flags that should not be changed by the user.
override CPPFLAGS := \
-I src \
$(CPPFLAGS) \
-MMD \
-MP
# Internal nasm flags that should not be changed by the user.
override NASMFLAGS := \
-f elf64 \
$(patsubst -g,-g -F dwarf,$(NASMFLAGS)) \
-Wall
# Internal linker flags that should not be changed by the user.
override LDFLAGS += \
-m elf_x86_64 \
-nostdlib \
-static \
-z max-page-size=0x1000 \
--gc-sections \
-T linker.lds
# Use "find" to glob all *.c, *.S, and *.asm files in the tree and obtain the
# object and header dependency file names.
override SRCFILES := $(shell find -L src -type f 2>/dev/null | LC_ALL=C sort)
override CFILES := $(filter %.c,$(SRCFILES))
override ASFILES := $(filter %.S,$(SRCFILES))
override NASMFILES := $(filter %.asm,$(SRCFILES))
override OBJ := $(addprefix obj/,$(CFILES:.c=.c.o) $(ASFILES:.S=.S.o) $(NASMFILES:.asm=.asm.o))
override HEADER_DEPS := $(addprefix obj/,$(CFILES:.c=.c.d) $(ASFILES:.S=.S.d))
# Default target. This must come first, before header dependencies.
.PHONY: all
all: bin/$(OUTPUT)
# Include header dependencies.
-include $(HEADER_DEPS)
# Link rules for the final executable.
bin/$(OUTPUT): GNUmakefile linker.lds $(OBJ)
mkdir -p "$(dir $@)"
$(LD) $(LDFLAGS) $(OBJ) -o $@
# Compilation rules for *.c files.
obj/%.c.o: %.c GNUmakefile
mkdir -p "$(dir $@)"
$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
# Compilation rules for *.S files.
obj/%.S.o: %.S GNUmakefile
mkdir -p "$(dir $@)"
$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
# Compilation rules for *.asm (nasm) files.
obj/%.asm.o: %.asm GNUmakefile
mkdir -p "$(dir $@)"
nasm $(NASMFLAGS) $< -o $@
# Remove object files and the final executable.
.PHONY: clean iso
clean:
rm -rf bin obj
iso: bin/$(OUTPUT)
# Create a directory which will be our ISO root.
mkdir -p iso_root
# Copy the relevant files over.
mkdir -p iso_root/boot
cp -v bin/CometOS iso_root/boot/
mkdir -p iso_root/boot/limine
cp -v limine.conf limine-binary/limine-bios.sys limine-binary/limine-bios-cd.bin \
limine-binary/limine-uefi-cd.bin iso_root/boot/limine/
# Create the EFI boot tree and copy Limine's EFI executables over.
mkdir -p iso_root/EFI/BOOT
cp -v limine-binary/BOOTX64.EFI iso_root/EFI/BOOT/
cp -v limine-binary/BOOTIA32.EFI iso_root/EFI/BOOT/
# Create the bootable ISO.
xorriso -as mkisofs -R -r -J -b boot/limine/limine-bios-cd.bin \
-no-emul-boot -boot-load-size 4 -boot-info-table -hfsplus \
-apm-block-size 2048 --efi-boot boot/limine/limine-uefi-cd.bin \
-efi-boot-part --efi-boot-image --protective-msdos-label \
iso_root -o CometOS.iso
# Install Limine stage 1 and 2 for legacy BIOS boot.
./limine-binary/limine bios-install CometOS.iso
run: iso
qemu-system-x86_64 -cdrom CometOS.iso -m 1024

77
Makefile
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@@ -1,77 +0,0 @@
# ==============================================================================
# 1. PROJECT CONFIGURATION
# ==============================================================================
BIN_TARGET := CometOS.bin
TARGET := CometOS.iso
BUILD_DIR := build
LDSCRIPT := linker.ld
# Toolchain definitions
CXX := g++
ASM := as
LD := ld
# Compiler and Linker Flags
ASMFLAGS := --32
CXXFLAGS := -Wall -Wextra -O3 -m32 -fno-use-cxa-atexit -nostdlib -fno-builtin -fno-rtti -fno-exceptions -fno-leading-underscore
LDFLAGS := -T $(LDSCRIPT) -melf_i386
# ==============================================================================
# 2. FILE SEARCH AND COMPONENT SETUP
# ==============================================================================
# Find all source files recursively in the current folder and subfolders
SRCS := $(wildcard src/**/*.cpp src/**/*.S)
# Strip paths and convert extensions to .o (e.g., "src/main.cpp" -> "main.o")
RAW_OBJS := $(patsubst %.cpp,%.o,$(patsubst %.S,%.o,$(notdir $(SRCS))))
# Place all object files into the build directory
OBJS := $(addprefix $(BUILD_DIR)/, $(RAW_OBJS))
# Automagically tell Make where to find the original source files
VPATH := $(sort $(dir $(SRCS)))
# ==============================================================================
# 3. BUILD RULES
# ==============================================================================
.PHONY: all clean run
# Default rule
all: $(TARGET)
run: $(TARGET)
qemu-system-i386 -cdrom $(TARGET) -m 1024
# Link rule: Combines all objects using the linker script
$(BIN_TARGET): $(OBJS) $(LDSCRIPT)
$(LD) $(OBJS) $(LDFLAGS) -o $@
@echo "Build successful: $(BIN_TARGET)"
$(TARGET): $(BIN_TARGET)
@mkdir iso/boot/grub -p
@cp $< iso/boot/
@echo 'set default=0' > iso/boot/grub/grub.cfg
@echo 'set timeout=0' >> iso/boot/grub/grub.cfg
@echo '' >> iso/boot/grub/grub.cfg
@echo 'menuentry "CometOS" {' >> iso/boot/grub/grub.cfg
@echo ' multiboot /boot/CometOS.bin' >> iso/boot/grub/grub.cfg
@echo ' boot' >> iso/boot/grub/grub.cfg
@echo '}' >> iso/boot/grub/grub.cfg
grub-mkrescue --output=$@ iso
# Compilation rule for C++ files
$(BUILD_DIR)/%.o: %.cpp | $(BUILD_DIR)
$(CXX) $(CXXFLAGS) -c $< -o $@
# Compilation rule for Assembly files
$(BUILD_DIR)/%.o: %.S | $(BUILD_DIR)
$(ASM) $(ASMFLAGS) -c $< -o $@
# Safely create the build directory if it doesn't exist
$(BUILD_DIR):
mkdir -p $(BUILD_DIR)
# Cleanup rule
clean:
rm -rf $(BUILD_DIR) $(BIN_TARGET) $(TARGET)
@echo "Cleaned up build files."

5
get_limine.sh Normal file
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@@ -0,0 +1,5 @@
# Download the latest Limine binary release.
curl -L https://github.com/Limine-Bootloader/Limine/releases/latest/download/limine-binary.tar.gz | gunzip | tar -xf -
# Build "limine" utility.
make -C limine-binary

0
iso.sh Executable file
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10
limine.conf Normal file
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@@ -0,0 +1,10 @@
# Timeout in seconds that Limine will use before automatically booting.
timeout: 5
# The entry name that will be displayed in the boot menu.
/CometOS
# We use the Limine boot protocol.
protocol: limine
# Path to the kernel to boot. boot():/ represents the partition on which limine.conf is located.
path: boot():/boot/CometOS

36
linker.ld
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@@ -1,36 +0,0 @@
ENTRY(loader)
OUTPUT_FORMAT(elf32-i386)
OUTPUT_ARCH(i386:i386)
SECTIONS
{
. = 0x0100000;
.text :
{
*(.multiboot)
*(.text*)
*(.rodata)
}
.data :
{
start_ctors = .;
KEEP(*( .init_array ));
KEEP(*(SORT_BY_INIT_PRIORITY( .init_array.* )))
end_ctors = .;
*(.data)
}
.bss :
{
*(.bss)
}
/DISCARD/ :
{
*(.fini_array*)
*(.comment)
}
}

76
linker.lds Normal file
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@@ -0,0 +1,76 @@
/* Tell the linker that we want an x86_64 ELF64 output file */
OUTPUT_FORMAT(elf64-x86-64)
/* We want the symbol kmain to be our entry point */
ENTRY(kmain)
/* Define the program headers we want so the bootloader gives us the right */
/* MMU permissions; this also allows us to exert more control over the linking */
/* process. */
PHDRS
{
limine_requests PT_LOAD;
text PT_LOAD;
rodata PT_LOAD;
data PT_LOAD;
}
SECTIONS
{
/* We want to be placed in the topmost 2GiB of the address space, for optimisations */
/* and because that is what the Limine spec mandates. */
/* Any address in this region will do, but often 0xffffffff80000000 is chosen as */
/* that is the beginning of the region. */
. = 0xffffffff80000000;
/* Define a section to contain the Limine requests and assign it to its own PHDR */
.limine_requests : {
KEEP(*(.limine_requests_start))
KEEP(*(.limine_requests))
KEEP(*(.limine_requests_end))
} :limine_requests
/* Move to the next memory page for .text */
. = ALIGN(CONSTANT(MAXPAGESIZE));
.text : {
*(.text .text.*)
} :text
/* Move to the next memory page for .rodata */
. = ALIGN(CONSTANT(MAXPAGESIZE));
.rodata : {
*(.rodata .rodata.*)
} :rodata
/* Add a .note.gnu.build-id output section in case a build ID flag is added to the */
/* linker command. */
.note.gnu.build-id : {
*(.note.gnu.build-id)
} :rodata
/* Move to the next memory page for .data */
. = ALIGN(CONSTANT(MAXPAGESIZE));
.data : {
*(.data .data.*)
} :data
/* NOTE: .bss needs to be the last thing mapped to :data, otherwise lots of */
/* unnecessary zeros will be written to the binary. */
/* If you need, for example, .init_array and .fini_array, those should be placed */
/* above this. */
.bss : {
*(.bss .bss.*)
*(COMMON)
} :data
/* Discard .note.* and .eh_frame* since they may cause issues on some hosts. */
/DISCARD/ : {
*(.eh_frame*)
*(.note .note.*)
}
}

31
src/boot/loader.S
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@@ -1,31 +0,0 @@
.set MAGIC, 0x1badb002
.set FLAGS, (1<<0 | 1<<1)
.set CHECKSUM, -(MAGIC + FLAGS)
.section .multiboot
.long MAGIC
.long FLAGS
.long CHECKSUM
.section .text
.extern kernelMain
.extern callConstructors
.global loader
loader:
mov $kernel_stack, %esp
call callConstructors
push %eax
push %ebx
call kernelMain
_stop: # should never actually reach this but just in case...
cli
hlt
jmp _stop
.section .bss
.space 2*1024*1024 # Give the kernel 2MB of stack space
kernel_stack:

125
src/include/multiboot.h
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@@ -1,125 +0,0 @@
#ifndef MULTIBOOT_H
#define MULTIBOOT_H
// The following was copied from https://www.gnu.org/software/grub/manual/multiboot/html_node/multiboot.h.html
/* multiboot.h - the header for Multiboot */
/* Copyright (C) 1999, 2001 Free Software Foundation, Inc.
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Macros. */
/* The magic number for the Multiboot header. */
#define MULTIBOOT_HEADER_MAGIC 0x1BADB002
/* The flags for the Multiboot header. */
#ifdef __ELF__
# define MULTIBOOT_HEADER_FLAGS 0x00000003
#else
# define MULTIBOOT_HEADER_FLAGS 0x00010003
#endif
/* The magic number passed by a Multiboot-compliant boot loader. */
#define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002
/* The size of our stack (16KB). */
#define STACK_SIZE 0x4000
/* C symbol format. HAVE_ASM_USCORE is defined by configure. */
#ifdef HAVE_ASM_USCORE
# define EXT_C(sym) _ ## sym
#else
# define EXT_C(sym) sym
#endif
#ifndef ASM
/* Do not include here in boot.S. */
/* Types. */
/* The Multiboot header. */
typedef struct multiboot_header
{
unsigned long magic;
unsigned long flags;
unsigned long checksum;
unsigned long header_addr;
unsigned long load_addr;
unsigned long load_end_addr;
unsigned long bss_end_addr;
unsigned long entry_addr;
} multiboot_header_t;
/* The symbol table for a.out. */
typedef struct aout_symbol_table
{
unsigned long tabsize;
unsigned long strsize;
unsigned long addr;
unsigned long reserved;
} aout_symbol_table_t;
/* The section header table for ELF. */
typedef struct elf_section_header_table
{
unsigned long num;
unsigned long size;
unsigned long addr;
unsigned long shndx;
} elf_section_header_table_t;
/* The Multiboot information. */
typedef struct multiboot_info
{
unsigned long flags;
unsigned long mem_lower;
unsigned long mem_upper;
unsigned long boot_device;
unsigned long cmdline;
unsigned long mods_count;
unsigned long mods_addr;
union
{
aout_symbol_table_t aout_sym;
elf_section_header_table_t elf_sec;
} u;
unsigned long mmap_length;
unsigned long mmap_addr;
} multiboot_info_t;
/* The module structure. */
typedef struct module
{
unsigned long mod_start;
unsigned long mod_end;
unsigned long string;
unsigned long reserved;
} module_t;
/* The memory map. Be careful that the offset 0 is base_addr_low
but no size. */
typedef struct memory_map
{
unsigned long size;
unsigned long base_addr_low;
unsigned long base_addr_high;
unsigned long length_low;
unsigned long length_high;
unsigned long type;
} memory_map_t;
#endif /* ! ASM */
#endif /* MULTIBOOT_H */

52
src/kernel/common/memory.c Normal file
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@@ -0,0 +1,52 @@
#include "memory.h"
void *memcpy(void *restrict dest, const void *restrict src, size_t n) {
uint8_t *restrict pdest = dest;
const uint8_t *restrict psrc = src;
for (size_t i = 0; i < n; i++) {
pdest[i] = psrc[i];
}
return dest;
}
void *memset(void *s, int c, size_t n) {
uint8_t *p = s;
for (size_t i = 0; i < n; i++) {
p[i] = (uint8_t)c;
}
return s;
}
void *memmove(void *dest, const void *src, size_t n) {
uint8_t *pdest = dest;
const uint8_t *psrc = src;
if ((uintptr_t)src > (uintptr_t)dest) {
for (size_t i = 0; i < n; i++) {
pdest[i] = psrc[i];
}
} else if ((uintptr_t)src < (uintptr_t)dest) {
for (size_t i = n; i > 0; i--) {
pdest[i-1] = psrc[i-1];
}
}
return dest;
}
int memcmp(const void *s1, const void *s2, size_t n) {
const uint8_t *p1 = s1;
const uint8_t *p2 = s2;
for (size_t i = 0; i < n; i++) {
if (p1[i] != p2[i]) {
return p1[i] < p2[i] ? -1 : 1;
}
}
return 0;
}

14
src/kernel/common/memory.h Normal file
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@@ -0,0 +1,14 @@
#include <stdint.h>
#include <stddef.h>
// GCC and Clang reserve the right to generate calls to the following
// 4 functions even if they are not directly called.
// Implement them as the C specification mandates.
// DO NOT remove or rename these functions, or stuff will eventually break!
// They CAN be moved to a different .c file.
void *memcpy(void *restrict dest, const void *restrict src, size_t n);
void *memset(void *s, int c, size_t n);
void *memmove(void *dest, const void *src, size_t n);
int memcmp(const void *s1, const void *s2, size_t n);

70
src/kernel/kernel.c Normal file
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@@ -0,0 +1,70 @@
#include <stdint.h>
#include <stdbool.h>
#include "limine.h"
#include "common/memory.h"
// Set the base revision to 6, this is recommended as this is the latest
// base revision described by the Limine boot protocol specification.
// See specification for further info.
__attribute__((used, section(".limine_requests")))
static volatile uint64_t limine_base_revision[] = LIMINE_BASE_REVISION(6);
// The Limine requests can be placed anywhere, but it is important that
// the compiler does not optimise them away, so, usually, they should
// be made volatile or equivalent, _and_ they should be accessed at least
// once or marked as used with the "used" attribute as done here.
__attribute__((used, section(".limine_requests")))
static volatile struct limine_framebuffer_request framebuffer_request = {
.id = LIMINE_FRAMEBUFFER_REQUEST_ID,
.revision = 0
};
// Finally, define the start and end markers for the Limine requests.
// These can also be moved anywhere, to any .c file, as seen fit.
__attribute__((used, section(".limine_requests_start")))
static volatile uint64_t limine_requests_start_marker[] = LIMINE_REQUESTS_START_MARKER;
__attribute__((used, section(".limine_requests_end")))
static volatile uint64_t limine_requests_end_marker[] = LIMINE_REQUESTS_END_MARKER;
static void everythingsDying(void) {
while (1) {
asm ("hlt");
}
}
// The following will be our kernel's entry point.
// If renaming kmain() to something else, make sure to change the
// linker script accordingly.
void kmain(void) {
// Ensure the bootloader actually understands our base revision (see spec).
if (LIMINE_BASE_REVISION_SUPPORTED(limine_base_revision) == false) {
everythingsDying();
}
// Ensure we got a framebuffer.
if (framebuffer_request.response == NULL
|| framebuffer_request.response->framebuffer_count < 1) {
everythingsDying();
}
// Fetch the first framebuffer.
struct limine_framebuffer *framebuffer = framebuffer_request.response->framebuffers[0];
// Print a nice pattern to screen as an example.
// Note: we assume the framebuffer model is RGB with 32-bit pixels.
volatile uint32_t *fb_ptr = framebuffer->address;
for (size_t y = 0; y < framebuffer->height; y++) {
for (size_t x = 0; x < framebuffer->width; x++) {
uint32_t nX = x * 255 / framebuffer->width;
uint32_t nY = y * 255 / framebuffer->height;
fb_ptr[y * (framebuffer->pitch / 4) + x] = (nY << 8) | nX;
}
}
// We're done, just hang...
everythingsDying();
}

18
src/kernel/kernel.cpp
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@@ -1,18 +0,0 @@
#include "../include/multiboot.h"
#include "vga_console.h"
typedef void(*constructor)();
extern "C" constructor start_ctors;
extern "C" constructor end_ctors;
extern "C" void callConstructors()
{
for (constructor* i = &start_ctors; i != &end_ctors; i++) {
(*i)();
}
}
extern "C" void kernelMain(multiboot_info* multibootInfo, unsigned int magicNumber) {
vgaPrint("Hello, world!");
while (true);
}

669
src/kernel/limine.h Normal file
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@@ -0,0 +1,669 @@
/* SPDX-License-Identifier: 0BSD */
/* Copyright (C) 2022-2026 Mintsuki and contributors.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef LIMINE_H
#define LIMINE_H 1
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Misc */
#ifdef LIMINE_NO_POINTERS
# define LIMINE_PTR(TYPE) uint64_t
#else
# define LIMINE_PTR(TYPE) TYPE
#endif
#define LIMINE_REQUESTS_START_MARKER { 0xf6b8f4b39de7d1ae, 0xfab91a6940fcb9cf, \
0x785c6ed015d3e316, 0x181e920a7852b9d9 }
#define LIMINE_REQUESTS_END_MARKER { 0xadc0e0531bb10d03, 0x9572709f31764c62 }
#define LIMINE_BASE_REVISION(N) { 0xf9562b2d5c95a6c8, 0x6a7b384944536bdc, (N) }
#define LIMINE_BASE_REVISION_SUPPORTED(VAR) ((VAR)[2] == 0)
#define LIMINE_LOADED_BASE_REVISION_VALID(VAR) ((VAR)[1] != 0x6a7b384944536bdc)
#define LIMINE_LOADED_BASE_REVISION(VAR) ((VAR)[1])
#define LIMINE_COMMON_MAGIC 0xc7b1dd30df4c8b88, 0x0a82e883a194f07b
struct limine_uuid {
uint32_t a;
uint16_t b;
uint16_t c;
uint8_t d[8];
};
#define LIMINE_MEDIA_TYPE_GENERIC 0
#define LIMINE_MEDIA_TYPE_OPTICAL 1
#define LIMINE_MEDIA_TYPE_TFTP 2
struct limine_file {
uint64_t revision;
LIMINE_PTR(void *) address;
uint64_t size;
LIMINE_PTR(char *) path;
LIMINE_PTR(char *) string;
uint32_t media_type;
uint32_t unused;
uint8_t tftp_ipv4[4];
uint32_t tftp_port;
uint32_t partition_index;
uint32_t mbr_disk_id;
struct limine_uuid gpt_disk_uuid;
struct limine_uuid gpt_part_uuid;
struct limine_uuid part_uuid;
};
/* Boot info */
#define LIMINE_BOOTLOADER_INFO_REQUEST_ID { LIMINE_COMMON_MAGIC, 0xf55038d8e2a1202f, 0x279426fcf5f59740 }
struct limine_bootloader_info_response {
uint64_t revision;
LIMINE_PTR(char *) name;
LIMINE_PTR(char *) version;
};
struct limine_bootloader_info_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_bootloader_info_response *) response;
};
/* Executable command line */
#define LIMINE_EXECUTABLE_CMDLINE_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x4b161536e598651e, 0xb390ad4a2f1f303a }
struct limine_executable_cmdline_response {
uint64_t revision;
LIMINE_PTR(char *) cmdline;
};
struct limine_executable_cmdline_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_executable_cmdline_response *) response;
};
/* Firmware type */
#define LIMINE_FIRMWARE_TYPE_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x8c2f75d90bef28a8, 0x7045a4688eac00c3 }
#define LIMINE_FIRMWARE_TYPE_X86BIOS 0
#define LIMINE_FIRMWARE_TYPE_EFI32 1
#define LIMINE_FIRMWARE_TYPE_EFI64 2
#define LIMINE_FIRMWARE_TYPE_SBI 3
struct limine_firmware_type_response {
uint64_t revision;
uint64_t firmware_type;
};
struct limine_firmware_type_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_firmware_type_response *) response;
};
/* Stack size */
#define LIMINE_STACK_SIZE_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x224ef0460a8e8926, 0xe1cb0fc25f46ea3d }
struct limine_stack_size_response {
uint64_t revision;
};
struct limine_stack_size_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_stack_size_response *) response;
uint64_t stack_size;
};
/* HHDM */
#define LIMINE_HHDM_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x48dcf1cb8ad2b852, 0x63984e959a98244b }
struct limine_hhdm_response {
uint64_t revision;
uint64_t offset;
};
struct limine_hhdm_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_hhdm_response *) response;
};
/* Framebuffer */
#define LIMINE_FRAMEBUFFER_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x9d5827dcd881dd75, 0xa3148604f6fab11b }
#define LIMINE_FRAMEBUFFER_RGB 1
struct limine_video_mode {
uint64_t pitch;
uint64_t width;
uint64_t height;
uint16_t bpp;
uint8_t memory_model;
uint8_t red_mask_size;
uint8_t red_mask_shift;
uint8_t green_mask_size;
uint8_t green_mask_shift;
uint8_t blue_mask_size;
uint8_t blue_mask_shift;
};
struct limine_framebuffer {
LIMINE_PTR(void *) address;
uint64_t width;
uint64_t height;
uint64_t pitch;
uint16_t bpp;
uint8_t memory_model;
uint8_t red_mask_size;
uint8_t red_mask_shift;
uint8_t green_mask_size;
uint8_t green_mask_shift;
uint8_t blue_mask_size;
uint8_t blue_mask_shift;
uint8_t unused[7];
uint64_t edid_size;
LIMINE_PTR(void *) edid;
/* Response revision 1 */
uint64_t mode_count;
LIMINE_PTR(struct limine_video_mode **) modes;
};
struct limine_framebuffer_response {
uint64_t revision;
uint64_t framebuffer_count;
LIMINE_PTR(struct limine_framebuffer **) framebuffers;
};
struct limine_framebuffer_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_framebuffer_response *) response;
};
/* Flanterm FB init params */
#define LIMINE_FLANTERM_FB_INIT_PARAMS_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x3259399fe7c5f126, 0xe01c1c8c5db9d1a9 }
#define LIMINE_FLANTERM_FB_ROTATE_0 0
#define LIMINE_FLANTERM_FB_ROTATE_90 1
#define LIMINE_FLANTERM_FB_ROTATE_180 2
#define LIMINE_FLANTERM_FB_ROTATE_270 3
struct limine_flanterm_fb_init_params {
LIMINE_PTR(uint32_t *) canvas;
uint64_t canvas_size;
uint32_t ansi_colours[8];
uint32_t ansi_bright_colours[8];
uint32_t default_bg;
uint32_t default_fg;
uint32_t default_bg_bright;
uint32_t default_fg_bright;
LIMINE_PTR(void *) font;
uint64_t font_width;
uint64_t font_height;
uint64_t font_spacing;
uint64_t font_scale_x;
uint64_t font_scale_y;
uint64_t margin;
uint64_t rotation;
};
struct limine_flanterm_fb_init_params_response {
uint64_t revision;
uint64_t entry_count;
LIMINE_PTR(struct limine_flanterm_fb_init_params **) entries;
};
struct limine_flanterm_fb_init_params_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_flanterm_fb_init_params_response *) response;
};
/* Paging mode */
#define LIMINE_PAGING_MODE_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x95c1a0edab0944cb, 0xa4e5cb3842f7488a }
#define LIMINE_PAGING_MODE_X86_64_4LVL 0
#define LIMINE_PAGING_MODE_X86_64_5LVL 1
#define LIMINE_PAGING_MODE_X86_64_MIN LIMINE_PAGING_MODE_X86_64_4LVL
#define LIMINE_PAGING_MODE_X86_64_DEFAULT LIMINE_PAGING_MODE_X86_64_4LVL
#define LIMINE_PAGING_MODE_AARCH64_4LVL 0
#define LIMINE_PAGING_MODE_AARCH64_5LVL 1
#define LIMINE_PAGING_MODE_AARCH64_MIN LIMINE_PAGING_MODE_AARCH64_4LVL
#define LIMINE_PAGING_MODE_AARCH64_DEFAULT LIMINE_PAGING_MODE_AARCH64_4LVL
#define LIMINE_PAGING_MODE_RISCV_SV39 0
#define LIMINE_PAGING_MODE_RISCV_SV48 1
#define LIMINE_PAGING_MODE_RISCV_SV57 2
#define LIMINE_PAGING_MODE_RISCV_MIN LIMINE_PAGING_MODE_RISCV_SV39
#define LIMINE_PAGING_MODE_RISCV_DEFAULT LIMINE_PAGING_MODE_RISCV_SV48
#define LIMINE_PAGING_MODE_LOONGARCH_4LVL 0
#define LIMINE_PAGING_MODE_LOONGARCH_MIN LIMINE_PAGING_MODE_LOONGARCH_4LVL
#define LIMINE_PAGING_MODE_LOONGARCH_DEFAULT LIMINE_PAGING_MODE_LOONGARCH_4LVL
struct limine_paging_mode_response {
uint64_t revision;
uint64_t mode;
};
struct limine_paging_mode_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_paging_mode_response *) response;
uint64_t mode;
uint64_t max_mode;
uint64_t min_mode;
};
/* MP */
#define LIMINE_MP_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x95a67b819a1b857e, 0xa0b61b723b6a73e0 }
struct limine_mp_info;
typedef void (*limine_goto_address)(struct limine_mp_info *);
#if defined (__x86_64__) || defined (__i386__)
#define LIMINE_MP_RESPONSE_X86_64_X2APIC (1 << 0)
struct limine_mp_info {
uint32_t processor_id;
uint32_t lapic_id;
uint64_t reserved;
LIMINE_PTR(limine_goto_address) goto_address;
uint64_t extra_argument;
};
struct limine_mp_response {
uint64_t revision;
uint32_t flags;
uint32_t bsp_lapic_id;
uint64_t cpu_count;
LIMINE_PTR(struct limine_mp_info **) cpus;
};
#elif defined (__aarch64__)
struct limine_mp_info {
uint32_t processor_id;
uint32_t reserved1;
uint64_t mpidr;
uint64_t reserved;
LIMINE_PTR(limine_goto_address) goto_address;
uint64_t extra_argument;
};
struct limine_mp_response {
uint64_t revision;
uint64_t flags;
uint64_t bsp_mpidr;
uint64_t cpu_count;
LIMINE_PTR(struct limine_mp_info **) cpus;
};
#elif defined (__riscv) && (__riscv_xlen == 64)
struct limine_mp_info {
uint64_t processor_id;
uint64_t hartid;
uint64_t reserved;
LIMINE_PTR(limine_goto_address) goto_address;
uint64_t extra_argument;
};
struct limine_mp_response {
uint64_t revision;
uint64_t flags;
uint64_t bsp_hartid;
uint64_t cpu_count;
LIMINE_PTR(struct limine_mp_info **) cpus;
};
#elif defined (__loongarch__) && (__loongarch_grlen == 64)
struct limine_mp_info {
uint64_t processor_id;
uint64_t phys_id;
uint64_t reserved;
LIMINE_PTR(limine_goto_address) goto_address;
uint64_t extra_argument;
};
struct limine_mp_response {
uint64_t revision;
uint64_t flags;
uint64_t bsp_phys_id;
uint64_t cpu_count;
LIMINE_PTR(struct limine_mp_info **) cpus;
};
#else
#error Unknown architecture
#endif
#define LIMINE_MP_REQUEST_X86_64_X2APIC (1 << 0)
struct limine_mp_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_mp_response *) response;
uint64_t flags;
};
/* Memory map */
#define LIMINE_MEMMAP_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x67cf3d9d378a806f, 0xe304acdfc50c3c62 }
#define LIMINE_MEMMAP_USABLE 0
#define LIMINE_MEMMAP_RESERVED 1
#define LIMINE_MEMMAP_ACPI_RECLAIMABLE 2
#define LIMINE_MEMMAP_ACPI_NVS 3
#define LIMINE_MEMMAP_BAD_MEMORY 4
#define LIMINE_MEMMAP_BOOTLOADER_RECLAIMABLE 5
#define LIMINE_MEMMAP_EXECUTABLE_AND_MODULES 6
#define LIMINE_MEMMAP_FRAMEBUFFER 7
#define LIMINE_MEMMAP_RESERVED_MAPPED 8
struct limine_memmap_entry {
uint64_t base;
uint64_t length;
uint64_t type;
};
struct limine_memmap_response {
uint64_t revision;
uint64_t entry_count;
LIMINE_PTR(struct limine_memmap_entry **) entries;
};
struct limine_memmap_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_memmap_response *) response;
};
/* Entry point */
#define LIMINE_ENTRY_POINT_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x13d86c035a1cd3e1, 0x2b0caa89d8f3026a }
typedef void (*limine_entry_point)(void);
struct limine_entry_point_response {
uint64_t revision;
};
struct limine_entry_point_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_entry_point_response *) response;
LIMINE_PTR(limine_entry_point) entry;
};
/* Executable File */
#define LIMINE_EXECUTABLE_FILE_REQUEST_ID { LIMINE_COMMON_MAGIC, 0xad97e90e83f1ed67, 0x31eb5d1c5ff23b69 }
struct limine_executable_file_response {
uint64_t revision;
LIMINE_PTR(struct limine_file *) executable_file;
};
struct limine_executable_file_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_executable_file_response *) response;
};
/* Module */
#define LIMINE_MODULE_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x3e7e279702be32af, 0xca1c4f3bd1280cee }
#define LIMINE_INTERNAL_MODULE_REQUIRED (1 << 0)
#define LIMINE_INTERNAL_MODULE_COMPRESSED (1 << 1)
struct limine_internal_module {
LIMINE_PTR(const char *) path;
LIMINE_PTR(const char *) string;
uint64_t flags;
};
struct limine_module_response {
uint64_t revision;
uint64_t module_count;
LIMINE_PTR(struct limine_file **) modules;
};
struct limine_module_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_module_response *) response;
/* Request revision 1 */
uint64_t internal_module_count;
LIMINE_PTR(struct limine_internal_module **) internal_modules;
};
/* RSDP */
#define LIMINE_RSDP_REQUEST_ID { LIMINE_COMMON_MAGIC, 0xc5e77b6b397e7b43, 0x27637845accdcf3c }
struct limine_rsdp_response {
uint64_t revision;
LIMINE_PTR(void *) address;
};
struct limine_rsdp_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_rsdp_response *) response;
};
/* SMBIOS */
#define LIMINE_SMBIOS_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x9e9046f11e095391, 0xaa4a520fefbde5ee }
struct limine_smbios_response {
uint64_t revision;
LIMINE_PTR(void *) entry_32;
LIMINE_PTR(void *) entry_64;
};
struct limine_smbios_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_smbios_response *) response;
};
/* EFI system table */
#define LIMINE_EFI_SYSTEM_TABLE_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x5ceba5163eaaf6d6, 0x0a6981610cf65fcc }
struct limine_efi_system_table_response {
uint64_t revision;
LIMINE_PTR(void *) address;
};
struct limine_efi_system_table_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_efi_system_table_response *) response;
};
/* TPM event log */
#define LIMINE_TPM_EVENT_LOG_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x98e094fc7e76e979, 0xee8d8775c54e1d1f }
#define LIMINE_TPM_EVENT_LOG_FORMAT_TCG_1_2 1
#define LIMINE_TPM_EVENT_LOG_FORMAT_TCG_2 2
struct limine_tpm_event_log_response {
uint64_t revision;
uint64_t format;
uint64_t size;
LIMINE_PTR(void *) address;
};
struct limine_tpm_event_log_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_tpm_event_log_response *) response;
};
/* EFI memory map */
#define LIMINE_EFI_MEMMAP_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x7df62a431d6872d5, 0xa4fcdfb3e57306c8 }
struct limine_efi_memmap_response {
uint64_t revision;
LIMINE_PTR(void *) memmap;
uint64_t memmap_size;
uint64_t desc_size;
uint64_t desc_version;
};
struct limine_efi_memmap_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_efi_memmap_response *) response;
};
/* Date at boot */
#define LIMINE_DATE_AT_BOOT_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x502746e184c088aa, 0xfbc5ec83e6327893 }
struct limine_date_at_boot_response {
uint64_t revision;
int64_t timestamp;
};
struct limine_date_at_boot_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_date_at_boot_response *) response;
};
/* Executable address */
#define LIMINE_EXECUTABLE_ADDRESS_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x71ba76863cc55f63, 0xb2644a48c516a487 }
struct limine_executable_address_response {
uint64_t revision;
uint64_t physical_base;
uint64_t virtual_base;
};
struct limine_executable_address_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_executable_address_response *) response;
};
/* Device Tree Blob */
#define LIMINE_DTB_REQUEST_ID { LIMINE_COMMON_MAGIC, 0xb40ddb48fb54bac7, 0x545081493f81ffb7 }
struct limine_dtb_response {
uint64_t revision;
LIMINE_PTR(void *) dtb_ptr;
};
struct limine_dtb_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_dtb_response *) response;
};
/* RISC-V Boot Hart ID */
#define LIMINE_RISCV_BSP_HARTID_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x1369359f025525f9, 0x2ff2a56178391bb6 }
struct limine_riscv_bsp_hartid_response {
uint64_t revision;
uint64_t bsp_hartid;
};
struct limine_riscv_bsp_hartid_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_riscv_bsp_hartid_response *) response;
};
/* Bootloader Performance */
#define LIMINE_BOOTLOADER_PERFORMANCE_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x6b50ad9bf36d13ad, 0xdc4c7e88fc759e17 }
struct limine_bootloader_performance_response {
uint64_t revision;
uint64_t reset_usec;
uint64_t init_usec;
uint64_t exec_usec;
};
struct limine_bootloader_performance_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_bootloader_performance_response *) response;
};
#define LIMINE_X86_64_KEEP_IOMMU_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x8ebaabe51f490179, 0x2aa86a59ffb4ab0f }
struct limine_x86_64_keep_iommu_response {
uint64_t revision;
};
struct limine_x86_64_keep_iommu_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_x86_64_keep_iommu_response *) response;
};
/* TSC (Timestamp Counter) Frequency */
#define LIMINE_TSC_FREQUENCY_REQUEST_ID { LIMINE_COMMON_MAGIC, 0x10f2ee1d87d195e4, 0xf747a2b78f6ddb31 }
struct limine_tsc_frequency_response {
uint64_t revision;
uint64_t frequency;
};
struct limine_tsc_frequency_request {
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_tsc_frequency_response *) response;
};
#ifdef __cplusplus
}
#endif
#endif

13
src/kernel/vga_console.cpp
View File

@@ -1,13 +0,0 @@
#include "vga_console.h"
void vgaPrint(char* string) {
static unsigned short* vgaVideoMemory = (unsigned short*)0xb8000;
for (unsigned int i = 0; string[i] != 0; i++) {
/*
The high byte in the VGA video memory contains colour info we don't want to overwrite.
So, we have to combine the high byte with the char we're writing.
*/
vgaVideoMemory[i] = (vgaVideoMemory[i] & 0xFF00) | string[i];
}
}

3
src/kernel/vga_console.h
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@@ -1,3 +0,0 @@
#pragma once
void vgaPrint(char* string);