From dc360b9d95b933df57b2140fae4fc49aa0cc960a Mon Sep 17 00:00:00 2001 From: Joshua Goins Date: Mon, 6 Jun 2022 20:50:50 -0400 Subject: [PATCH] Initial files --- .gitignore | 4 + LICENSE | 674 ++++++++++++++++++++++++++++++++++++++++++++ Makefile | 71 +++++ README.md | 26 ++ run.sh | 5 + scripts/buildiso.sh | 35 +++ scripts/run_qemu.sh | 3 + src/kernel.c | 132 +++++++++ src/limine.cfg | 6 + src/linker.ld | 55 ++++ src/stivale2.h | 373 ++++++++++++++++++++++++ 11 files changed, 1384 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 Makefile create mode 100644 README.md create mode 100755 run.sh create mode 100755 scripts/buildiso.sh create mode 100755 scripts/run_qemu.sh create mode 100644 src/kernel.c create mode 100644 src/limine.cfg create mode 100644 src/linker.ld create mode 100644 src/stivale2.h diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..8131daa --- /dev/null +++ b/.gitignore @@ -0,0 +1,4 @@ +bin/ +build/ +.directory +.DS_Store diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..30131b6 --- /dev/null +++ b/Makefile @@ -0,0 +1,71 @@ +BIN_DIR=bin +BUILD_DIR=build +SRC_DIR=src + +KERNEL := sen.elf + +# It is highly recommended to use a custom built cross toolchain to build a kernel. +# We are only using "cc" as a placeholder here. It may work by using +# the host system's toolchain, but this is not guaranteed. +ifeq ($(origin CC), default) +CC := cc +endif + +# Likewise, "ld" here is just a placeholder and your mileage may vary if using the +# host's "ld". +ifeq ($(origin LD), default) +LD := ld +endif + +CFLAGS ?= -O2 -g -Wall -Wextra -pipe -fno-pie -no-pie +LDFLAGS ?= + +# Internal C flags that should not be changed by the user. +INTERNALCFLAGS := \ + -I$(SRC_DIR) \ + -std=gnu11 \ + -ffreestanding \ + -fno-stack-protector \ + -no-pie \ + -mabi=sysv \ + -mno-80387 \ + -mno-mmx \ + -mno-3dnow \ + -mno-sse \ + -mno-sse2 \ + -mno-red-zone \ + -mcmodel=kernel \ + -MMD + +# Internal linker flags that should not be changed by the user. +INTERNALLDFLAGS := \ + -T$(SRC_DIR)/linker.ld \ + -nostdlib \ + -zmax-page-size=0x1000 \ + -static + +CFILES := $(wildcard $(SRC_DIR)/*.c) +OBJ := $(BUILD_DIR)/$(notdir $(CFILES:.c=.o)) +HEADER_DEPS := $(BUILD_DIR)/$(notdir $(CFILES:.c=.d)) + +.PHONY: all +all: $(KERNEL) + +$(KERNEL): $(OBJ) | $(BIN_DIR) + $(LD) $(OBJ) $(LDFLAGS) $(INTERNALLDFLAGS) -o $(BIN_DIR)/$@ + +-include $(HEADER_DEPS) +$(BUILD_DIR)/%.o: $(SRC_DIR)/%.c | $(BUILD_DIR) + $(CC) $(CFLAGS) $(INTERNALCFLAGS) -c $< -o $@ + +# create directories if they don't exist +$(BIN_DIR): + mkdir -p $@ + +$(BUILD_DIR): + mkdir -p $@ + +# Remove object files and the final executable. +.PHONY: clean +clean: + rm -rf $(BIN_DIR)/$(KERNEL) $(OBJ) $(HEADER_DEPS) diff --git a/README.md b/README.md new file mode 100644 index 0000000..248bad2 --- /dev/null +++ b/README.md @@ -0,0 +1,26 @@ +# sen + +This is my custom kernel for learning purposes. I'm not a osdev at all, so please excuse the mess. + +Right now it compiles for x86_64, 32-bit is not supported. Most of this is just skeleton code from osdev.org, but I cleaned +some stuff. I use Stivale for higher half kernel loading and not having to gaff about a bootloader for now. Limine is included +as my bootloader of choice. + +## Building + +Currently it requires GNU make, and some version of GCC. If you wish to build the iso, you also need xorriso. + +Run make to build the elf: + +``` +make +``` + +Or if you wish to start a quick qemu test, use `run.sh`: + +``` +./run.sh +``` + +## Credit +- https://wiki.osdev.org/ of course! diff --git a/run.sh b/run.sh new file mode 100755 index 0000000..15a99bc --- /dev/null +++ b/run.sh @@ -0,0 +1,5 @@ +#!/bin/sh + +make && +./scripts/buildiso.sh && +./scripts/run_qemu.sh diff --git a/scripts/buildiso.sh b/scripts/buildiso.sh new file mode 100755 index 0000000..819f9c9 --- /dev/null +++ b/scripts/buildiso.sh @@ -0,0 +1,35 @@ +#!/bin/sh +# credit: https://wiki.osdev.org/Stivale_Bare_Bones +# modified to suit sen + +# switch to build directory +cd build && + +# check if limine is already downloaded, and built +if [ ! -d "limine" ] +then + # Download the latest Limine binary release. + git clone https://github.com/limine-bootloader/limine.git --branch=v2.0-branch-binary --depth=1 && + + # Build limine-install. + make -C limine && + + # Create a directory which will be our ISO root. + mkdir -p iso_root +fi + +# Copy the relevant files over. +cp -v ../bin/sen.elf ../src/limine.cfg limine/limine.sys \ + limine/limine-cd.bin limine/limine-eltorito-efi.bin iso_root/ && + +# Create the bootable ISO. +xorriso -as mkisofs -b limine-cd.bin \ + -no-emul-boot -boot-load-size 4 -boot-info-table \ + --efi-boot limine-eltorito-efi.bin \ + -efi-boot-part --efi-boot-image --protective-msdos-label \ + iso_root -o sen.iso && + +# Install Limine stage 1 and 2 for legacy BIOS boot. +./limine/limine-install sen.iso && + +cp sen.iso ../bin/sen.iso diff --git a/scripts/run_qemu.sh b/scripts/run_qemu.sh new file mode 100755 index 0000000..33a0ca2 --- /dev/null +++ b/scripts/run_qemu.sh @@ -0,0 +1,3 @@ +#!/bin/sh + +qemu-system-x86_64 -cdrom bin/sen.iso diff --git a/src/kernel.c b/src/kernel.c new file mode 100644 index 0000000..fc940d5 --- /dev/null +++ b/src/kernel.c @@ -0,0 +1,132 @@ +#include +#include +#include + +// We need to tell the stivale bootloader where we want our stack to be. +// We are going to allocate our stack as an array in .bss. +static uint8_t stack[8192]; + +// stivale2 uses a linked list of tags for both communicating TO the +// bootloader, or receiving info FROM it. More information about these tags +// is found in the stivale2 specification. + +// stivale2 offers a runtime terminal service which can be ditched at any +// time, but it provides an easy way to print out to graphical terminal, +// especially during early boot. +// Read the notes about the requirements for using this feature below this +// code block. +static struct stivale2_header_tag_terminal terminal_hdr_tag = { + // All tags need to begin with an identifier and a pointer to the next tag. + .tag = { + // Identification constant defined in stivale2.h and the specification. + .identifier = STIVALE2_HEADER_TAG_TERMINAL_ID, + // If next is 0, it marks the end of the linked list of header tags. + .next = 0 + }, + // The terminal header tag possesses a flags field, leave it as 0 for now + // as it is unused. + .flags = 0 +}; + +// We are now going to define a framebuffer header tag. +// This tag tells the bootloader that we want a graphical framebuffer instead +// of a CGA-compatible text mode. Omitting this tag will make the bootloader +// default to text mode, if available. +static struct stivale2_header_tag_framebuffer framebuffer_hdr_tag = { + // Same as above. + .tag = { + .identifier = STIVALE2_HEADER_TAG_FRAMEBUFFER_ID, + // Instead of 0, we now point to the previous header tag. The order in + // which header tags are linked does not matter. + .next = (uint64_t)&terminal_hdr_tag + }, + // We set all the framebuffer specifics to 0 as we want the bootloader + // to pick the best it can. + .framebuffer_width = 0, + .framebuffer_height = 0, + .framebuffer_bpp = 0 +}; + +// The stivale2 specification says we need to define a "header structure". +// This structure needs to reside in the .stivale2hdr ELF section in order +// for the bootloader to find it. We use this __attribute__ directive to +// tell the compiler to put the following structure in said section. +__attribute__((section(".stivale2hdr"), used)) +static struct stivale2_header stivale_hdr = { + // The entry_point member is used to specify an alternative entry + // point that the bootloader should jump to instead of the executable's + // ELF entry point. We do not care about that so we leave it zeroed. + .entry_point = 0, + // Let's tell the bootloader where our stack is. + // We need to add the sizeof(stack) since in x86(_64) the stack grows + // downwards. + .stack = (uintptr_t)stack + sizeof(stack), + // Bit 1, if set, causes the bootloader to return to us pointers in the + // higher half, which we likely want since this is a higher half kernel. + // Bit 2, if set, tells the bootloader to enable protected memory ranges, + // that is, to respect the ELF PHDR mandated permissions for the executable's + // segments. + // Bit 3, if set, enables fully virtual kernel mappings, which we want as + // they allow the bootloader to pick whichever *physical* memory address is + // available to load the kernel, rather than relying on us telling it where + // to load it. + // Bit 4 disables a deprecated feature and should always be set. + .flags = (1 << 1) | (1 << 2) | (1 << 3) | (1 << 4), + // This header structure is the root of the linked list of header tags and + // points to the first one in the linked list. + .tags = (uintptr_t)&framebuffer_hdr_tag +}; + +// We will now write a helper function which will allow us to scan for tags +// that we want FROM the bootloader (structure tags). +void *stivale2_get_tag(struct stivale2_struct *stivale2_struct, uint64_t id) { + struct stivale2_tag *current_tag = (void *)stivale2_struct->tags; + for (;;) { + // If the tag pointer is NULL (end of linked list), we did not find + // the tag. Return NULL to signal this. + if (current_tag == NULL) { + return NULL; + } + + // Check whether the identifier matches. If it does, return a pointer + // to the matching tag. + if (current_tag->identifier == id) { + return current_tag; + } + + // Get a pointer to the next tag in the linked list and repeat. + current_tag = (void *)current_tag->next; + } +} + +// The following will be our kernel's entry point. +void _start(struct stivale2_struct *stivale2_struct) { + // Let's get the terminal structure tag from the bootloader. + struct stivale2_struct_tag_terminal *term_str_tag; + term_str_tag = stivale2_get_tag(stivale2_struct, STIVALE2_STRUCT_TAG_TERMINAL_ID); + + // Check if the tag was actually found. + if (term_str_tag == NULL) { + // It wasn't found, just hang... + for (;;) { + asm ("hlt"); + } + } + + // Let's get the address of the terminal write function. + void *term_write_ptr = (void *)term_str_tag->term_write; + + // Now, let's assign this pointer to a function pointer which + // matches the prototype described in the stivale2 specification for + // the stivale2_term_write function. + void (*term_write)(const char *string, size_t length) = term_write_ptr; + + // We should now be able to call the above function pointer to print out + // a simple "Hello World" to screen. + term_write("Hello World", 11); + + // We're done, just hang... + for (;;) { + asm ("hlt"); + } +} diff --git a/src/limine.cfg b/src/limine.cfg new file mode 100644 index 0000000..a86d1e9 --- /dev/null +++ b/src/limine.cfg @@ -0,0 +1,6 @@ +TIMEOUT=0 + +:sen + +PROTOCOL=stivale2 +KERNEL_PATH=boot:///sen.elf diff --git a/src/linker.ld b/src/linker.ld new file mode 100644 index 0000000..1c2f31c --- /dev/null +++ b/src/linker.ld @@ -0,0 +1,55 @@ +/* credit: https://wiki.osdev.org/Stivale_Bare_Bones */ +/* Tell the linker that we want an x86_64 ELF64 output file */ +OUTPUT_FORMAT(elf64-x86-64) +OUTPUT_ARCH(i386:x86-64) + +/* We want the symbol _start to be our entry point */ +ENTRY(_start) + +/* Define the program headers we want so the bootloader gives us the right */ +/* MMU permissions */ +PHDRS +{ + null PT_NULL FLAGS(0) ; /* Null segment */ + text PT_LOAD FLAGS((1 << 0) | (1 << 2)) ; /* Execute + Read */ + rodata PT_LOAD FLAGS((1 << 2)) ; /* Read only */ + data PT_LOAD FLAGS((1 << 1) | (1 << 2)) ; /* Write + Read */ +} + +SECTIONS +{ + /* We wanna be placed in the topmost 2GiB of the address space, for optimisations */ + /* and because that is what the stivale2 spec mandates. */ + /* Any address in this region will do, but often 0xffffffff80000000 is chosen as */ + /* that is the beginning of the region. */ + . = 0xffffffff80000000; + + .text : { + *(.text .text.*) + } :text + + /* Move to the next memory page for .rodata */ + . += CONSTANT(MAXPAGESIZE); + + /* We place the .stivale2hdr section containing the header in its own section, */ + /* and we use the KEEP directive on it to make sure it doesn't get discarded. */ + .stivale2hdr : { + KEEP(*(.stivale2hdr)) + } :rodata + + .rodata : { + *(.rodata .rodata.*) + } :rodata + + /* Move to the next memory page for .data */ + . += CONSTANT(MAXPAGESIZE); + + .data : { + *(.data .data.*) + } :data + + .bss : { + *(COMMON) + *(.bss .bss.*) + } :data +} diff --git a/src/stivale2.h b/src/stivale2.h new file mode 100644 index 0000000..ccab570 --- /dev/null +++ b/src/stivale2.h @@ -0,0 +1,373 @@ +#ifndef __STIVALE__STIVALE2_H__ +#define __STIVALE__STIVALE2_H__ + +#include + +#if (defined (_STIVALE2_SPLIT_64) && defined (__i386__)) || defined(_STIVALE2_SPLIT_64_FORCE) + +#define _stivale2_split64(NAME) \ + union { \ + uint32_t NAME; \ + uint32_t NAME##_lo; \ + }; \ + uint32_t NAME##_hi + +#else + +#define _stivale2_split64(NAME) \ + uint64_t NAME + +#endif + +// Anchor for non ELF kernels +struct stivale2_anchor { + uint8_t anchor[15]; + uint8_t bits; + _stivale2_split64(phys_load_addr); + _stivale2_split64(phys_bss_start); + _stivale2_split64(phys_bss_end); + _stivale2_split64(phys_stivale2hdr); +}; + +struct stivale2_tag { + uint64_t identifier; + _stivale2_split64(next); +}; + +/* --- Header --------------------------------------------------------------- */ +/* Information passed from the kernel to the bootloader */ + +struct stivale2_header { + _stivale2_split64(entry_point); + _stivale2_split64(stack); + uint64_t flags; + _stivale2_split64(tags); +}; + +#define STIVALE2_HEADER_TAG_ANY_VIDEO_ID 0xc75c9fa92a44c4db + +struct stivale2_header_tag_any_video { + struct stivale2_tag tag; + uint64_t preference; +}; + +#define STIVALE2_HEADER_TAG_FRAMEBUFFER_ID 0x3ecc1bc43d0f7971 + +struct stivale2_header_tag_framebuffer { + struct stivale2_tag tag; + uint16_t framebuffer_width; + uint16_t framebuffer_height; + uint16_t framebuffer_bpp; + uint16_t unused; +}; + +#define STIVALE2_HEADER_TAG_FB_MTRR_ID 0x4c7bb07731282e00 + +#define STIVALE2_HEADER_TAG_SLIDE_HHDM_ID 0xdc29269c2af53d1d + +struct stivale2_header_tag_slide_hhdm { + struct stivale2_tag tag; + uint64_t flags; + _stivale2_split64(alignment); +}; + +#define STIVALE2_HEADER_TAG_TERMINAL_ID 0xa85d499b1823be72 + +struct stivale2_header_tag_terminal { + struct stivale2_tag tag; + uint64_t flags; + _stivale2_split64(callback); +}; + +#define STIVALE2_TERM_CB_DEC 10 +#define STIVALE2_TERM_CB_BELL 20 +#define STIVALE2_TERM_CB_PRIVATE_ID 30 +#define STIVALE2_TERM_CB_STATUS_REPORT 40 +#define STIVALE2_TERM_CB_POS_REPORT 50 +#define STIVALE2_TERM_CB_KBD_LEDS 60 +#define STIVALE2_TERM_CB_MODE 70 +#define STIVALE2_TERM_CB_LINUX 80 + +#define STIVALE2_TERM_CTX_SIZE ((uint64_t)(-1)) +#define STIVALE2_TERM_CTX_SAVE ((uint64_t)(-2)) +#define STIVALE2_TERM_CTX_RESTORE ((uint64_t)(-3)) +#define STIVALE2_TERM_FULL_REFRESH ((uint64_t)(-4)) + +#define STIVALE2_HEADER_TAG_SMP_ID 0x1ab015085f3273df + +struct stivale2_header_tag_smp { + struct stivale2_tag tag; + uint64_t flags; +}; + +#define STIVALE2_HEADER_TAG_5LV_PAGING_ID 0x932f477032007e8f + +#define STIVALE2_HEADER_TAG_UNMAP_NULL_ID 0x92919432b16fe7e7 + +/* --- Struct --------------------------------------------------------------- */ +/* Information passed from the bootloader to the kernel */ + +struct stivale2_struct { +#define STIVALE2_BOOTLOADER_BRAND_SIZE 64 + char bootloader_brand[STIVALE2_BOOTLOADER_BRAND_SIZE]; + +#define STIVALE2_BOOTLOADER_VERSION_SIZE 64 + char bootloader_version[STIVALE2_BOOTLOADER_VERSION_SIZE]; + + uint64_t tags; +}; + +#define STIVALE2_STRUCT_TAG_PMRS_ID 0x5df266a64047b6bd + +#define STIVALE2_PMR_EXECUTABLE ((uint64_t)1 << 0) +#define STIVALE2_PMR_WRITABLE ((uint64_t)1 << 1) +#define STIVALE2_PMR_READABLE ((uint64_t)1 << 2) + +struct stivale2_pmr { + uint64_t base; + uint64_t length; + uint64_t permissions; +}; + +struct stivale2_struct_tag_pmrs { + struct stivale2_tag tag; + uint64_t entries; + struct stivale2_pmr pmrs[]; +}; + +#define STIVALE2_STRUCT_TAG_KERNEL_BASE_ADDRESS_ID 0x060d78874a2a8af0 + +struct stivale2_struct_tag_kernel_base_address { + struct stivale2_tag tag; + uint64_t physical_base_address; + uint64_t virtual_base_address; +}; + +#define STIVALE2_STRUCT_TAG_CMDLINE_ID 0xe5e76a1b4597a781 + +struct stivale2_struct_tag_cmdline { + struct stivale2_tag tag; + uint64_t cmdline; +}; + +#define STIVALE2_STRUCT_TAG_MEMMAP_ID 0x2187f79e8612de07 + +#define STIVALE2_MMAP_USABLE 1 +#define STIVALE2_MMAP_RESERVED 2 +#define STIVALE2_MMAP_ACPI_RECLAIMABLE 3 +#define STIVALE2_MMAP_ACPI_NVS 4 +#define STIVALE2_MMAP_BAD_MEMORY 5 +#define STIVALE2_MMAP_BOOTLOADER_RECLAIMABLE 0x1000 +#define STIVALE2_MMAP_KERNEL_AND_MODULES 0x1001 +#define STIVALE2_MMAP_FRAMEBUFFER 0x1002 + +struct stivale2_mmap_entry { + uint64_t base; + uint64_t length; + uint32_t type; + uint32_t unused; +}; + +struct stivale2_struct_tag_memmap { + struct stivale2_tag tag; + uint64_t entries; + struct stivale2_mmap_entry memmap[]; +}; + +#define STIVALE2_STRUCT_TAG_FRAMEBUFFER_ID 0x506461d2950408fa + +#define STIVALE2_FBUF_MMODEL_RGB 1 + +struct stivale2_struct_tag_framebuffer { + struct stivale2_tag tag; + uint64_t framebuffer_addr; + uint16_t framebuffer_width; + uint16_t framebuffer_height; + uint16_t framebuffer_pitch; + uint16_t framebuffer_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; +}; + +#define STIVALE2_STRUCT_TAG_EDID_ID 0x968609d7af96b845 + +struct stivale2_struct_tag_edid { + struct stivale2_tag tag; + uint64_t edid_size; + uint8_t edid_information[]; +}; + +#define STIVALE2_STRUCT_TAG_TEXTMODE_ID 0x38d74c23e0dca893 + +struct stivale2_struct_tag_textmode { + struct stivale2_tag tag; + uint64_t address; + uint16_t unused; + uint16_t rows; + uint16_t cols; + uint16_t bytes_per_char; +}; + +#define STIVALE2_STRUCT_TAG_FB_MTRR_ID 0x6bc1a78ebe871172 + +#define STIVALE2_STRUCT_TAG_TERMINAL_ID 0xc2b3f4c3233b0974 + +struct stivale2_struct_tag_terminal { + struct stivale2_tag tag; + uint32_t flags; + uint16_t cols; + uint16_t rows; + uint64_t term_write; + uint64_t max_length; +}; + +#define STIVALE2_STRUCT_TAG_MODULES_ID 0x4b6fe466aade04ce + +struct stivale2_module { + uint64_t begin; + uint64_t end; + +#define STIVALE2_MODULE_STRING_SIZE 128 + char string[STIVALE2_MODULE_STRING_SIZE]; +}; + +struct stivale2_struct_tag_modules { + struct stivale2_tag tag; + uint64_t module_count; + struct stivale2_module modules[]; +}; + +#define STIVALE2_STRUCT_TAG_RSDP_ID 0x9e1786930a375e78 + +struct stivale2_struct_tag_rsdp { + struct stivale2_tag tag; + uint64_t rsdp; +}; + +#define STIVALE2_STRUCT_TAG_EPOCH_ID 0x566a7bed888e1407 + +struct stivale2_struct_tag_epoch { + struct stivale2_tag tag; + uint64_t epoch; +}; + +#define STIVALE2_STRUCT_TAG_FIRMWARE_ID 0x359d837855e3858c + +#define STIVALE2_FIRMWARE_BIOS (1 << 0) + +struct stivale2_struct_tag_firmware { + struct stivale2_tag tag; + uint64_t flags; +}; + +#define STIVALE2_STRUCT_TAG_EFI_SYSTEM_TABLE_ID 0x4bc5ec15845b558e + +struct stivale2_struct_tag_efi_system_table { + struct stivale2_tag tag; + uint64_t system_table; +}; + +#define STIVALE2_STRUCT_TAG_KERNEL_FILE_ID 0xe599d90c2975584a + +struct stivale2_struct_tag_kernel_file { + struct stivale2_tag tag; + uint64_t kernel_file; +}; + +#define STIVALE2_STRUCT_TAG_KERNEL_FILE_V2_ID 0x37c13018a02c6ea2 + +struct stivale2_struct_tag_kernel_file_v2 { + struct stivale2_tag tag; + uint64_t kernel_file; + uint64_t kernel_size; +}; + +#define STIVALE2_STRUCT_TAG_BOOT_VOLUME_ID 0x9b4358364c19ee62 + +struct stivale2_guid { + uint32_t a; + uint16_t b; + uint16_t c; + uint8_t d[8]; +}; + +struct stivale2_struct_tag_boot_volume { + struct stivale2_tag tag; + uint64_t flags; + struct stivale2_guid guid; + struct stivale2_guid part_guid; +}; + +#define STIVALE2_STRUCT_TAG_KERNEL_SLIDE_ID 0xee80847d01506c57 + +struct stivale2_struct_tag_kernel_slide { + struct stivale2_tag tag; + uint64_t kernel_slide; +}; + +#define STIVALE2_STRUCT_TAG_SMBIOS_ID 0x274bd246c62bf7d1 + +struct stivale2_struct_tag_smbios { + struct stivale2_tag tag; + uint64_t flags; + uint64_t smbios_entry_32; + uint64_t smbios_entry_64; +}; + +#define STIVALE2_STRUCT_TAG_SMP_ID 0x34d1d96339647025 + +struct stivale2_smp_info { + uint32_t processor_id; + uint32_t lapic_id; + uint64_t target_stack; + uint64_t goto_address; + uint64_t extra_argument; +}; + +struct stivale2_struct_tag_smp { + struct stivale2_tag tag; + uint64_t flags; + uint32_t bsp_lapic_id; + uint32_t unused; + uint64_t cpu_count; + struct stivale2_smp_info smp_info[]; +}; + +#define STIVALE2_STRUCT_TAG_PXE_SERVER_INFO 0x29d1e96239247032 + +struct stivale2_struct_tag_pxe_server_info { + struct stivale2_tag tag; + uint32_t server_ip; +}; + +#define STIVALE2_STRUCT_TAG_MMIO32_UART 0xb813f9b8dbc78797 + +struct stivale2_struct_tag_mmio32_uart { + struct stivale2_tag tag; + uint64_t addr; +}; + +#define STIVALE2_STRUCT_TAG_DTB 0xabb29bd49a2833fa + +struct stivale2_struct_tag_dtb { + struct stivale2_tag tag; + uint64_t addr; + uint64_t size; +}; + +#define STIVALE2_STRUCT_TAG_HHDM_ID 0xb0ed257db18cb58f + +struct stivale2_struct_tag_hhdm { + struct stivale2_tag tag; + uint64_t addr; +}; + +#undef _stivale2_split64 + +#endif