EMK/emk
1
0
Fork 0
Code Issues Activity

feat: init

Browse source
This commit is contained in:
Kevin Alavik 2025-05-14 13:14:37 +02:00
parent 7f4fadfa30
commit 9375cc74bd
Signed by: cmpsb
GPG key ID: 10D1CC0526FDC6D7
7 changed files with 1184 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

5
.gitignore vendored Normal file
View file

@ -0,0 +1,5 @@
build/
bin/
limine/
ovmf/
release/

62
GNUmakefile Normal file
View file

@ -0,0 +1,62 @@
# EMK 1.0 Copyright (c) 2025 Piraterna
MAKEFLAGS += -rR
.SUFFIXES:
QEMUFLAGS := -m 2G -debugcon stdio
IMAGE_NAME := release/emk
HOST_CC := cc
HOST_CFLAGS := -g -O2 -pipe
.PHONY: all
all: $(IMAGE_NAME).iso
.PHONY: run
run: $(IMAGE_NAME).iso ovmf/ovmf-code-x86_64.fd
@qemu-system-x86_64 \
-M q35 \
-drive if=pflash,unit=0,format=raw,file=ovmf/ovmf-code-x86_64.fd,readonly=on \
-cdrom $(IMAGE_NAME).iso \
$(QEMUFLAGS)
ovmf/ovmf-code-x86_64.fd:
@mkdir -p ovmf
@curl -Lo $@ https://github.com/osdev0/edk2-ovmf-nightly/releases/latest/download/ovmf-code-x86_64.fd
limine/limine:
@rm -rf limine
@git clone https://github.com/limine-bootloader/limine.git --branch=v9.x-binary --depth=1
@$(MAKE) -C limine \
CC="$(HOST_CC)" \
CFLAGS="$(HOST_CFLAGS)"
.PHONY: kernel
kernel:
@$(MAKE) -C kernel
$(IMAGE_NAME).iso: limine/limine kernel
@rm -rf iso_root
@mkdir -p release
@mkdir -p iso_root/boot/limine iso_root/EFI/BOOT
@cp -v kernel/bin/emk.elf iso_root/boot/
@cp -v limine.conf iso_root/boot/limine/
@cp -v limine/limine-bios.sys limine/limine-bios-cd.bin limine/limine-uefi-cd.bin iso_root/boot/limine/
@cp -v limine/BOOTX64.EFI iso_root/EFI/BOOT/
@cp -v limine/BOOTIA32.EFI iso_root/EFI/BOOT/
@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 $(IMAGE_NAME).iso
@./limine/limine bios-install $(IMAGE_NAME).iso
@rm -rf iso_root
.PHONY: clean
clean:
@$(MAKE) -C kernel clean
@rm -rf iso_root $(IMAGE_NAME).iso
.PHONY: distclean
distclean:
@$(MAKE) -C kernel distclean
@rm -rf iso_root *.iso kernel-deps limine ovmf

66
kernel/GNUmakefile Normal file
View file

@ -0,0 +1,66 @@
# EMK 1.0 Copyright (c) 2025 Piraterna
MAKEFLAGS += -rR
.SUFFIXES:
SRCDIR := src
INCDIR := src
OBJDIR := build
BINDIR := bin
TARGET := $(BINDIR)/emk.elf
CC := gcc
AS := gcc
NASM := nasm
CFLAGS := -g -O2 -pipe -Wall -Wextra -Werror -std=gnu11 -ffreestanding \
-fno-stack-protector -fno-stack-check -fno-PIC \
-ffunction-sections -fdata-sections -m64 -march=x86-64 \
-mno-80387 -mno-mmx -mno-sse -mno-sse2 -mno-red-zone \
-mcmodel=kernel -Wno-unused-variable
CPPFLAGS := -I$(INCDIR) -I$(SRCDIR) -MMD -MP -DLIMINE_API_REVISION=3
NASMFLAGS := -F dwarf -g
LDFLAGS := -nostdlib -static -z max-page-size=0x1000 -Wl,--gc-sections \
-T linker.ld -Wl,-m,elf_x86_64
SRCS := $(shell find $(SRCDIR) -type f \( -name '*.c' -o -name '*.S' -o -name '*.asm' \))
OBJS := $(patsubst %.c,$(OBJDIR)/%.o,$(filter %.c,$(SRCS))) \
$(patsubst %.S,$(OBJDIR)/%.o,$(filter %.S,$(SRCS))) \
$(patsubst %.asm,$(OBJDIR)/%.o,$(filter %.asm,$(SRCS)))
DEPS := $(OBJS:.o=.d)
.PHONY: all clean distclean
all: $(TARGET)
$(OBJDIR) $(BINDIR):
@mkdir -p $@
$(TARGET): $(OBJS) | $(BINDIR)
@echo " LD $@"
@$(CC) $(LDFLAGS) -o $@ $(OBJS)
$(OBJDIR)/%.o: %.c | $(OBJDIR)
@mkdir -p $(dir $@)
@echo " CC $<"
@$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
$(OBJDIR)/%.o: %.S | $(OBJDIR)
@mkdir -p $(dir $@)
@echo " AS $<"
@$(AS) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
$(OBJDIR)/%.o: %.asm | $(OBJDIR)
@mkdir -p $(dir $@)
@echo " NASM $<"
@$(NASM) $(NASMFLAGS) $< -o $@
clean:
@echo " CLEAN"
@rm -rf $(OBJDIR) $(TARGET)
distclean: clean
@echo " DISTCLEAN"
@rm -rf $(BINDIR)
-include $(DEPS)

58
kernel/linker.ld Normal file
View file

@ -0,0 +1,58 @@
OUTPUT_FORMAT(elf64-x86-64)
ENTRY(emk_entry)
PHDRS
{
limine_requests PT_LOAD;
text PT_LOAD;
rodata PT_LOAD;
data PT_LOAD;
}
SECTIONS
{
. = 0xffffffff80000000;
.limine_requests : {
__limine_requests_start = .;
KEEP(*(.limine_requests_start))
KEEP(*(.limine_requests))
KEEP(*(.limine_requests_end))
__limine_requests_end = .;
} :limine_requests
. = ALIGN(0x1000);
.text : {
__text_start = .;
*(.text .text.*)
__text_end = .;
} :text
. = ALIGN(0x1000);
.rodata : {
__rodata_start = .;
*(.rodata .rodata.*)
__rodata_end = .;
} :rodata
. = ALIGN(0x1000);
.data : {
__data_start = .;
*(.data .data.*)
} :data
.bss : {
*(.bss .bss.*)
*(COMMON)
__data_end = .;
} :data
/DISCARD/ : {
*(.eh_frame*)
*(.note .note.*)
}
}

881
kernel/src/boot/limine.h Normal file
View file

@ -0,0 +1,881 @@
/* BSD Zero Clause License */
/* Copyright (C) 2022-2025 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
#ifdef __cplusplus
extern "C"
{
#endif
#include <stdint.h>
/* Misc */
#ifdef LIMINE_NO_POINTERS
#define LIMINE_PTR(TYPE) uint64_t
#else
#define LIMINE_PTR(TYPE) TYPE
#endif
#ifndef LIMINE_API_REVISION
#define LIMINE_API_REVISION 0
#endif
#if LIMINE_API_REVISION > 3
#error "limine.h API revision unsupported"
#endif
#ifdef __GNUC__
#define LIMINE_DEPRECATED __attribute__((__deprecated__))
#define LIMINE_DEPRECATED_IGNORE_START \
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
#define LIMINE_DEPRECATED_IGNORE_END \
_Pragma("GCC diagnostic pop")
#else
#define LIMINE_DEPRECATED
#define LIMINE_DEPRECATED_IGNORE_START
#define LIMINE_DEPRECATED_IGNORE_END
#endif
#define LIMINE_REQUESTS_START_MARKER \
uint64_t limine_requests_start_marker[4] = {0xf6b8f4b39de7d1ae, 0xfab91a6940fcb9cf, \
0x785c6ed015d3e316, 0x181e920a7852b9d9};
#define LIMINE_REQUESTS_END_MARKER \
uint64_t limine_requests_end_marker[2] = {0xadc0e0531bb10d03, 0x9572709f31764c62};
#define LIMINE_REQUESTS_DELIMITER LIMINE_REQUESTS_END_MARKER
#define LIMINE_BASE_REVISION(N) \
uint64_t limine_base_revision[3] = {0xf9562b2d5c95a6c8, 0x6a7b384944536bdc, (N)};
#define LIMINE_BASE_REVISION_SUPPORTED (limine_base_revision[2] == 0)
#define LIMINE_LOADED_BASE_REV_VALID (limine_base_revision[1] != 0x6a7b384944536bdc)
#define LIMINE_LOADED_BASE_REVISION (limine_base_revision[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;
#if LIMINE_API_REVISION >= 3
LIMINE_PTR(char *)
string;
#else
LIMINE_PTR(char *)
cmdline;
#endif
uint32_t media_type;
uint32_t unused;
uint32_t tftp_ip;
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 {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 {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 {LIMINE_COMMON_MAGIC, 0x8c2f75d90bef28a8, 0x7045a4688eac00c3}
#define LIMINE_FIRMWARE_TYPE_X86BIOS 0
#define LIMINE_FIRMWARE_TYPE_UEFI32 1
#define LIMINE_FIRMWARE_TYPE_UEFI64 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 {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 {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 {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;
};
/* Terminal */
#define LIMINE_TERMINAL_REQUEST {LIMINE_COMMON_MAGIC, 0xc8ac59310c2b0844, 0xa68d0c7265d38878}
#define LIMINE_TERMINAL_CB_DEC 10
#define LIMINE_TERMINAL_CB_BELL 20
#define LIMINE_TERMINAL_CB_PRIVATE_ID 30
#define LIMINE_TERMINAL_CB_STATUS_REPORT 40
#define LIMINE_TERMINAL_CB_POS_REPORT 50
#define LIMINE_TERMINAL_CB_KBD_LEDS 60
#define LIMINE_TERMINAL_CB_MODE 70
#define LIMINE_TERMINAL_CB_LINUX 80
#define LIMINE_TERMINAL_CTX_SIZE ((uint64_t)(-1))
#define LIMINE_TERMINAL_CTX_SAVE ((uint64_t)(-2))
#define LIMINE_TERMINAL_CTX_RESTORE ((uint64_t)(-3))
#define LIMINE_TERMINAL_FULL_REFRESH ((uint64_t)(-4))
/* Response revision 1 */
#define LIMINE_TERMINAL_OOB_OUTPUT_GET ((uint64_t)(-10))
#define LIMINE_TERMINAL_OOB_OUTPUT_SET ((uint64_t)(-11))
#define LIMINE_TERMINAL_OOB_OUTPUT_OCRNL (1 << 0)
#define LIMINE_TERMINAL_OOB_OUTPUT_OFDEL (1 << 1)
#define LIMINE_TERMINAL_OOB_OUTPUT_OFILL (1 << 2)
#define LIMINE_TERMINAL_OOB_OUTPUT_OLCUC (1 << 3)
#define LIMINE_TERMINAL_OOB_OUTPUT_ONLCR (1 << 4)
#define LIMINE_TERMINAL_OOB_OUTPUT_ONLRET (1 << 5)
#define LIMINE_TERMINAL_OOB_OUTPUT_ONOCR (1 << 6)
#define LIMINE_TERMINAL_OOB_OUTPUT_OPOST (1 << 7)
LIMINE_DEPRECATED_IGNORE_START
struct LIMINE_DEPRECATED limine_terminal;
typedef void (*limine_terminal_write)(struct limine_terminal *, const char *, uint64_t);
typedef void (*limine_terminal_callback)(struct limine_terminal *, uint64_t, uint64_t, uint64_t, uint64_t);
struct LIMINE_DEPRECATED limine_terminal
{
uint64_t columns;
uint64_t rows;
LIMINE_PTR(struct limine_framebuffer *)
framebuffer;
};
struct LIMINE_DEPRECATED limine_terminal_response
{
uint64_t revision;
uint64_t terminal_count;
LIMINE_PTR(struct limine_terminal **)
terminals;
LIMINE_PTR(limine_terminal_write)
write;
};
struct LIMINE_DEPRECATED limine_terminal_request
{
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_terminal_response *)
response;
LIMINE_PTR(limine_terminal_callback)
callback;
};
LIMINE_DEPRECATED_IGNORE_END
/* Paging mode */
#define LIMINE_PAGING_MODE_REQUEST {LIMINE_COMMON_MAGIC, 0x95c1a0edab0944cb, 0xa4e5cb3842f7488a}
#if defined(__x86_64__) || defined(__i386__)
#define LIMINE_PAGING_MODE_X86_64_4LVL 0
#define LIMINE_PAGING_MODE_X86_64_5LVL 1
#define LIMINE_PAGING_MODE_MIN LIMINE_PAGING_MODE_X86_64_4LVL
#define LIMINE_PAGING_MODE_DEFAULT LIMINE_PAGING_MODE_X86_64_4LVL
#elif defined(__aarch64__)
#define LIMINE_PAGING_MODE_AARCH64_4LVL 0
#define LIMINE_PAGING_MODE_AARCH64_5LVL 1
#define LIMINE_PAGING_MODE_MIN LIMINE_PAGING_MODE_AARCH64_4LVL
#define LIMINE_PAGING_MODE_DEFAULT LIMINE_PAGING_MODE_AARCH64_4LVL
#elif defined(__riscv) && (__riscv_xlen == 64)
#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_MIN LIMINE_PAGING_MODE_RISCV_SV39
#define LIMINE_PAGING_MODE_DEFAULT LIMINE_PAGING_MODE_RISCV_SV48
#elif defined(__loongarch__) && (__loongarch_grlen == 64)
#define LIMINE_PAGING_MODE_LOONGARCH64_4LVL 0
#define LIMINE_PAGING_MODE_MIN LIMINE_PAGING_MODE_LOONGARCH64_4LVL
#define LIMINE_PAGING_MODE_DEFAULT LIMINE_PAGING_MODE_LOONGARCH64_4LVL
#else
#error Unknown architecture
#endif
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;
};
/* 5-level paging */
#define LIMINE_5_LEVEL_PAGING_REQUEST {LIMINE_COMMON_MAGIC, 0x94469551da9b3192, 0xebe5e86db7382888}
LIMINE_DEPRECATED_IGNORE_START
struct LIMINE_DEPRECATED limine_5_level_paging_response
{
uint64_t revision;
};
struct LIMINE_DEPRECATED limine_5_level_paging_request
{
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_5_level_paging_response *)
response;
};
LIMINE_DEPRECATED_IGNORE_END
/* MP */
#if LIMINE_API_REVISION >= 1
#define LIMINE_MP_REQUEST {LIMINE_COMMON_MAGIC, 0x95a67b819a1b857e, 0xa0b61b723b6a73e0}
#define LIMINE_MP(TEXT) limine_mp_##TEXT
#else
#define LIMINE_SMP_REQUEST {LIMINE_COMMON_MAGIC, 0x95a67b819a1b857e, 0xa0b61b723b6a73e0}
#define LIMINE_MP(TEXT) limine_smp_##TEXT
#endif
struct LIMINE_MP(info);
typedef void (*limine_goto_address)(struct LIMINE_MP(info) *);
#if defined(__x86_64__) || defined(__i386__)
#if LIMINE_API_REVISION >= 1
#define LIMINE_MP_X2APIC (1 << 0)
#else
#define LIMINE_SMP_X2APIC (1 << 0)
#endif
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 reserved;
};
struct LIMINE_MP(response)
{
uint64_t cpu_count;
LIMINE_PTR(struct LIMINE_MP(info) **)
cpus;
};
#else
#error Unknown architecture
#endif
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 {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
#if LIMINE_API_REVISION >= 2
#define LIMINE_MEMMAP_EXECUTABLE_AND_MODULES 6
#else
#define LIMINE_MEMMAP_KERNEL_AND_MODULES 6
#endif
#define LIMINE_MEMMAP_FRAMEBUFFER 7
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 {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 */
#if LIMINE_API_REVISION >= 2
#define LIMINE_EXECUTABLE_FILE_REQUEST {LIMINE_COMMON_MAGIC, 0xad97e90e83f1ed67, 0x31eb5d1c5ff23b69}
#else
#define LIMINE_KERNEL_FILE_REQUEST {LIMINE_COMMON_MAGIC, 0xad97e90e83f1ed67, 0x31eb5d1c5ff23b69}
#endif
#if LIMINE_API_REVISION >= 2
struct limine_executable_file_response
{
#else
struct limine_kernel_file_response
{
#endif
uint64_t revision;
#if LIMINE_API_REVISION >= 2
LIMINE_PTR(struct limine_file *)
executable_file;
#else
LIMINE_PTR(struct limine_file *)
kernel_file;
#endif
};
#if LIMINE_API_REVISION >= 2
struct limine_executable_file_request
{
#else
struct limine_kernel_file_request
{
#endif
uint64_t id[4];
uint64_t revision;
#if LIMINE_API_REVISION >= 2
LIMINE_PTR(struct limine_executable_file_response *)
response;
#else
LIMINE_PTR(struct limine_kernel_file_response *)
response;
#endif
};
/* Module */
#define LIMINE_MODULE_REQUEST {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;
#if LIMINE_API_REVISION >= 3
LIMINE_PTR(const char *)
string;
#else
LIMINE_PTR(const char *)
cmdline;
#endif
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 {LIMINE_COMMON_MAGIC, 0xc5e77b6b397e7b43, 0x27637845accdcf3c}
struct limine_rsdp_response
{
uint64_t revision;
#if LIMINE_API_REVISION >= 1
uint64_t address;
#else
LIMINE_PTR(void *)
address;
#endif
};
struct limine_rsdp_request
{
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_rsdp_response *)
response;
};
/* SMBIOS */
#define LIMINE_SMBIOS_REQUEST {LIMINE_COMMON_MAGIC, 0x9e9046f11e095391, 0xaa4a520fefbde5ee}
struct limine_smbios_response
{
uint64_t revision;
#if LIMINE_API_REVISION >= 1
uint64_t entry_32;
uint64_t entry_64;
#else
LIMINE_PTR(void *)
entry_32;
LIMINE_PTR(void *)
entry_64;
#endif
};
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 {LIMINE_COMMON_MAGIC, 0x5ceba5163eaaf6d6, 0x0a6981610cf65fcc}
struct limine_efi_system_table_response
{
uint64_t revision;
#if LIMINE_API_REVISION >= 1
uint64_t address;
#else
LIMINE_PTR(void *)
address;
#endif
};
struct limine_efi_system_table_request
{
uint64_t id[4];
uint64_t revision;
LIMINE_PTR(struct limine_efi_system_table_response *)
response;
};
/* EFI memory map */
#define LIMINE_EFI_MEMMAP_REQUEST {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 */
#if LIMINE_API_REVISION >= 3
#define LIMINE_DATE_AT_BOOT_REQUEST {LIMINE_COMMON_MAGIC, 0x502746e184c088aa, 0xfbc5ec83e6327893}
#else
#define LIMINE_BOOT_TIME_REQUEST {LIMINE_COMMON_MAGIC, 0x502746e184c088aa, 0xfbc5ec83e6327893}
#endif
#if LIMINE_API_REVISION >= 3
struct limine_date_at_boot_response
{
#else
struct limine_boot_time_response
{
#endif
uint64_t revision;
#if LIMINE_API_REVISION >= 3
int64_t timestamp;
#else
int64_t boot_time;
#endif
};
#if LIMINE_API_REVISION >= 3
struct limine_date_at_boot_request
{
#else
struct limine_boot_time_request
{
#endif
uint64_t id[4];
uint64_t revision;
#if LIMINE_API_REVISION >= 3
LIMINE_PTR(struct limine_date_at_boot_response *)
response;
#else
LIMINE_PTR(struct limine_boot_time_response *)
response;
#endif
};
/* Executable address */
#if LIMINE_API_REVISION >= 2
#define LIMINE_EXECUTABLE_ADDRESS_REQUEST {LIMINE_COMMON_MAGIC, 0x71ba76863cc55f63, 0xb2644a48c516a487}
#else
#define LIMINE_KERNEL_ADDRESS_REQUEST {LIMINE_COMMON_MAGIC, 0x71ba76863cc55f63, 0xb2644a48c516a487}
#endif
#if LIMINE_API_REVISION >= 2
struct limine_executable_address_response
{
#else
struct limine_kernel_address_response
{
#endif
uint64_t revision;
uint64_t physical_base;
uint64_t virtual_base;
};
#if LIMINE_API_REVISION >= 2
struct limine_executable_address_request
{
#else
struct limine_kernel_address_request
{
#endif
uint64_t id[4];
uint64_t revision;
#if LIMINE_API_REVISION >= 2
LIMINE_PTR(struct limine_executable_address_response *)
response;
#else
LIMINE_PTR(struct limine_kernel_address_response *)
response;
#endif
};
/* Device Tree Blob */
#define LIMINE_DTB_REQUEST {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 {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;
};
#ifdef __cplusplus
}
#endif
#endif

107
kernel/src/emk.c Normal file
View file

@ -0,0 +1,107 @@
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include <boot/limine.h>
__attribute__((used, section(".limine_requests"))) static volatile LIMINE_BASE_REVISION(3);
__attribute__((used, section(".limine_requests"))) static volatile struct limine_framebuffer_request framebuffer_request = {
.id = LIMINE_FRAMEBUFFER_REQUEST,
.revision = 0};
__attribute__((used, section(".limine_requests_start"))) static volatile LIMINE_REQUESTS_START_MARKER;
__attribute__((used, section(".limine_requests_end"))) static volatile LIMINE_REQUESTS_END_MARKER;
void *memcpy(void *restrict dest, const void *restrict src, size_t n)
{
uint8_t *restrict pdest = (uint8_t *restrict)dest;
const uint8_t *restrict psrc = (const uint8_t *restrict)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 = (uint8_t *)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 = (uint8_t *)dest;
const uint8_t *psrc = (const uint8_t *)src;
if (src > dest)
{
for (size_t i = 0; i < n; i++)
{
pdest[i] = psrc[i];
}
}
else if (src < 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 = (const uint8_t *)s1;
const uint8_t *p2 = (const uint8_t *)s2;
for (size_t i = 0; i < n; i++)
{
if (p1[i] != p2[i])
{
return p1[i] < p2[i] ? -1 : 1;
}
}
return 0;
}
static void hcf(void)
{
asm("cli");
for (;;)
{
asm("hlt");
}
}
void emk_entry(void)
{
if (LIMINE_BASE_REVISION_SUPPORTED == false)
{
hcf();
}
if (framebuffer_request.response == NULL || framebuffer_request.response->framebuffer_count < 1)
{
hcf();
}
struct limine_framebuffer *framebuffer = framebuffer_request.response->framebuffers[0];
for (size_t i = 0; i < 100; i++)
{
volatile uint32_t *fb_ptr = framebuffer->address;
fb_ptr[i * (framebuffer->pitch / 4) + i] = 0xffffff;
}
hcf();
}

5
limine.conf Normal file
View file

@ -0,0 +1,5 @@
timeout: 3
/EMK
protocol: limine
path: boot():/boot/emk.elf