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This commit is contained in:
Morten Delenk 2017-04-28 21:06:30 +00:00
parent e8d09031cb
commit 182404b88f
11 changed files with 562 additions and 1 deletions
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2
.gitignore vendored
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@ -8,5 +8,5 @@ config.h
gen*.h gen*.h
build/ build/
__pycache__/ __pycache__/
kernel
*.iso *.iso
iso/kernel

3
kernel/arch/x86_64/flags.cmake Normal file
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SET(ISA_C_FLAGS "-m64 -I../../kernel/arch/x86_64/include/")
SET(ISA_CXX_FLAGS "${ISA_C_FLAGS}")
SET(ISA_ASM_FLAGS "${ISA_ASM_FLAGS}")

3
kernel/arch/x86_64/pc/flags.cmake Normal file
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SET(PLATFORM_C_FLAGS "-I../../kernel/arch/x86_64/pc/include")
SET(PLATFORM_CXX_FLAGS "${PLATFORM_C_FLAGS}")
SET(PLATFORM_ASM_FLAGS "${PLATFORM_C_FLAGS}")

264
kernel/arch/x86_64/pc/include/multiboot.h Normal file
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/* multiboot.h - Multiboot header file. */
/* Copyright (C) 1999,2003,2007,2008,2009,2010 Free Software Foundation, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ANY
* DEVELOPER OR DISTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
* IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef MULTIBOOT_HEADER
#define MULTIBOOT_HEADER 1
/* How many bytes from the start of the file we search for the header. */
#define MULTIBOOT_SEARCH 8192
#define MULTIBOOT_HEADER_ALIGN 4
/* The magic field should contain this. */
#define MULTIBOOT_HEADER_MAGIC 0x1BADB002
/* This should be in %eax. */
#define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002
/* Alignment of multiboot modules. */
#define MULTIBOOT_MOD_ALIGN 0x00001000
/* Alignment of the multiboot info structure. */
#define MULTIBOOT_INFO_ALIGN 0x00000004
/* Flags set in the 'flags' member of the multiboot header. */
/* Align all boot modules on i386 page (4KB) boundaries. */
#define MULTIBOOT_PAGE_ALIGN 0x00000001
/* Must pass memory information to OS. */
#define MULTIBOOT_MEMORY_INFO 0x00000002
/* Must pass video information to OS. */
#define MULTIBOOT_VIDEO_MODE 0x00000004
/* This flag indicates the use of the address fields in the header. */
#define MULTIBOOT_AOUT_KLUDGE 0x00010000
/* Flags to be set in the 'flags' member of the multiboot info structure. */
/* is there basic lower/upper memory information? */
#define MULTIBOOT_INFO_MEMORY 0x00000001
/* is there a boot device set? */
#define MULTIBOOT_INFO_BOOTDEV 0x00000002
/* is the command-line defined? */
#define MULTIBOOT_INFO_CMDLINE 0x00000004
/* are there modules to do something with? */
#define MULTIBOOT_INFO_MODS 0x00000008
/* These next two are mutually exclusive */
/* is there a symbol table loaded? */
#define MULTIBOOT_INFO_AOUT_SYMS 0x00000010
/* is there an ELF section header table? */
#define MULTIBOOT_INFO_ELF_SHDR 0X00000020
/* is there a full memory map? */
#define MULTIBOOT_INFO_MEM_MAP 0x00000040
/* Is there drive info? */
#define MULTIBOOT_INFO_DRIVE_INFO 0x00000080
/* Is there a config table? */
#define MULTIBOOT_INFO_CONFIG_TABLE 0x00000100
/* Is there a boot loader name? */
#define MULTIBOOT_INFO_BOOT_LOADER_NAME 0x00000200
/* Is there a APM table? */
#define MULTIBOOT_INFO_APM_TABLE 0x00000400
/* Is there video information? */
#define MULTIBOOT_INFO_VBE_INFO 0x00000800
#define MULTIBOOT_INFO_FRAMEBUFFER_INFO 0x00001000
#ifndef ASM_FILE
typedef unsigned char multiboot_uint8_t;
typedef unsigned short multiboot_uint16_t;
typedef unsigned int multiboot_uint32_t;
typedef unsigned long long multiboot_uint64_t;
struct multiboot_header {
/* Must be MULTIBOOT_MAGIC - see above. */
multiboot_uint32_t magic;
/* Feature flags. */
multiboot_uint32_t flags;
/* The above fields plus this one must equal 0 mod 2^32. */
multiboot_uint32_t checksum;
/* These are only valid if MULTIBOOT_AOUT_KLUDGE is set. */
multiboot_uint32_t header_addr;
multiboot_uint32_t load_addr;
multiboot_uint32_t load_end_addr;
multiboot_uint32_t bss_end_addr;
multiboot_uint32_t entry_addr;
/* These are only valid if MULTIBOOT_VIDEO_MODE is set. */
multiboot_uint32_t mode_type;
multiboot_uint32_t width;
multiboot_uint32_t height;
multiboot_uint32_t depth;
};
/* The symbol table for a.out. */
struct multiboot_aout_symbol_table {
multiboot_uint32_t tabsize;
multiboot_uint32_t strsize;
multiboot_uint32_t addr;
multiboot_uint32_t reserved;
};
typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t;
/* The section header table for ELF. */
struct multiboot_elf_section_header_table {
multiboot_uint32_t num;
multiboot_uint32_t size;
multiboot_uint32_t addr;
multiboot_uint32_t shndx;
};
typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t;
struct multiboot_info {
/* Multiboot info version number */
multiboot_uint32_t flags;
/* Available memory from BIOS */
multiboot_uint32_t mem_lower;
multiboot_uint32_t mem_upper;
/* "root" partition */
multiboot_uint32_t boot_device;
/* Kernel command line */
multiboot_uint32_t cmdline;
/* Boot-Module list */
multiboot_uint32_t mods_count;
multiboot_uint32_t mods_addr;
union {
multiboot_aout_symbol_table_t aout_sym;
multiboot_elf_section_header_table_t elf_sec;
} u;
/* Memory Mapping buffer */
multiboot_uint32_t mmap_length;
multiboot_uint32_t mmap_addr;
/* Drive Info buffer */
multiboot_uint32_t drives_length;
multiboot_uint32_t drives_addr;
/* ROM configuration table */
multiboot_uint32_t config_table;
/* Boot Loader Name */
multiboot_uint32_t boot_loader_name;
/* APM table */
multiboot_uint32_t apm_table;
/* Video */
multiboot_uint32_t vbe_control_info;
multiboot_uint32_t vbe_mode_info;
multiboot_uint16_t vbe_mode;
multiboot_uint16_t vbe_interface_seg;
multiboot_uint16_t vbe_interface_off;
multiboot_uint16_t vbe_interface_len;
multiboot_uint64_t framebuffer_addr;
multiboot_uint32_t framebuffer_pitch;
multiboot_uint32_t framebuffer_width;
multiboot_uint32_t framebuffer_height;
multiboot_uint8_t framebuffer_bpp;
#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0
#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB 1
#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT 2
multiboot_uint8_t framebuffer_type;
union {
struct {
multiboot_uint32_t framebuffer_palette_addr;
multiboot_uint16_t framebuffer_palette_num_colors;
};
struct {
multiboot_uint8_t framebuffer_red_field_position;
multiboot_uint8_t framebuffer_red_mask_size;
multiboot_uint8_t framebuffer_green_field_position;
multiboot_uint8_t framebuffer_green_mask_size;
multiboot_uint8_t framebuffer_blue_field_position;
multiboot_uint8_t framebuffer_blue_mask_size;
};
};
};
typedef struct multiboot_info multiboot_info_t;
struct multiboot_color {
multiboot_uint8_t red;
multiboot_uint8_t green;
multiboot_uint8_t blue;
};
struct multiboot_mmap_entry {
multiboot_uint32_t size;
multiboot_uint64_t addr;
multiboot_uint64_t len;
#define MULTIBOOT_MEMORY_AVAILABLE 1
#define MULTIBOOT_MEMORY_RESERVED 2
#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3
#define MULTIBOOT_MEMORY_NVS 4
#define MULTIBOOT_MEMORY_BADRAM 5
multiboot_uint32_t type;
} GRUB_PACKED;
typedef struct multiboot_mmap_entry multiboot_memory_map_t;
struct multiboot_mod_list {
/* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */
multiboot_uint32_t mod_start;
multiboot_uint32_t mod_end;
/* Module command line */
multiboot_uint32_t cmdline;
/* padding to take it to 16 bytes (must be zero) */
multiboot_uint32_t pad;
};
typedef struct multiboot_mod_list multiboot_module_t;
/* APM BIOS info. */
struct multiboot_apm_info {
grub_uint16_t version;
grub_uint16_t cseg;
grub_uint32_t offset;
grub_uint16_t cseg_16;
grub_uint16_t dseg;
grub_uint16_t flags;
grub_uint16_t cseg_len;
grub_uint16_t cseg_16_len;
grub_uint16_t dseg_len;
};
#endif /* ! ASM_FILE */
#endif /* ! MULTIBOOT_HEADER */

36
kernel/arch/x86_64/pc/layout.ld Normal file
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ENTRY(_start)
SECTIONS {
. = 0x200000;
kernel_start = .;
.text : {
KEEP(*(.text.boot));
*(.text)
}
.data : {
start_ctors = .;
KEEP(*(.init_array));
KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*)));
KEEP(*(.ctors));
end_ctors = .;
start_dtors = .;
KEEP(*(.fini_array));
KEEP(*(.fini_array.*));
KEEP(*(.dtors));
end_dtors = .;
start_eh_frame = .;
KEEP(*(.eh_frame));
KEEP(*(.eh_frame.*));
QUAD(0);
KEEP(*(.gcc_except_table));
KEEP(*(.gcc_except_table.*));
*(.data)
}
.rodata : {
*(.rodata)
}
.bss : {
*(.bss)
*(COMMON)
}
kernel_end = .;
}

9
kernel/arch/x86_64/pc/start.cpp Normal file
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#include "../../../hw/pc/cgaterm/cgaterm.hpp"
#include <base.hpp>
CGATerm term;
void main();
extern "C" void start() { main(); }
void drivers_init() {
setMainTTY(&term);
--term;
}

173
kernel/arch/x86_64/pc/start.s Normal file
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#define ASM_FILE 1
#include <config.h>
#include <multiboot.h>
.code32
.section .text.boot
.global _start
_start:
jmp _start2
.align MULTIBOOT_HEADER_ALIGN
.int MULTIBOOT_HEADER_MAGIC
.int 0x0
.int -(MULTIBOOT_HEADER_MAGIC)
.align MULTIBOOT_HEADER_ALIGN
.extern start
_start2:
mov $mb_ptr, %edi
stosl
mov %ebx, %eax
stosl // Store mb stuff
#ifdef ENABLE_FPU
finit //Enable FPU
#endif
#ifdef ENABLE_SSE
//No check for SSE as SSE2+ is always present on x86_64
mov %cr0, %eax
and $0xFFFB, %ax
or $0x2, %ax
mov %eax, %cr0
mov %cr4, %eax
or $3<<9, %ax
mov %eax, %cr4
#endif
mov $kernel_stack, %esp
mov $0x80000001, %eax
cpuid
and $0x20000000, %edx //Check if long mode is supported
jz x86_64_err
jmp x86_64_OK
x86_64_err:
cli
hlt
jmp x86_64_err
x86_64_OK:
//Assume PAE is supported
mov $pmfill, %esi
mov $pagemapL4, %edi
movsl
movsl
mov $pagedirPT, %edi
mov $0x87, %eax
xor %ebx, %ebx
mov $1023, %ecx
.ptloop:
stosl
xchg %eax, %ebx
stosl
xchg %eax, %ebx
add $0x40000000, %eax
jnc .ptloop_nc
inc %ebx
.ptloop_nc:
loop .ptloop
mov %cr4, %eax
or $0x20, %eax
mov %eax, %cr4 //Activate PAE
mov $0xC0000080, %ecx
rdmsr
or $0x00000100, %eax
wrmsr //Activate x86_64
mov $pagemapL4, %eax
mov %eax, %cr3 //Load page table
mov %cr0, %eax
bswap %eax
or $0x80, %eax
bswap %eax
mov %eax, %cr0 //Activate paging
lgdt gdtr
mov $0x30, %ax
ljmp $0x28, $_start3 //Jump into long mode
.code64
_start3:
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
mov %ax, %gs
mov %ax, %ss //Load 64-bit data
mov $mb_ptr, %rsi
lodsl
mov %rax, %rdi
lodsl
mov %rax, %rsi
call start
_stop:
cli
hlt
jmp _stop
.section .data
gdtr:
.word 9 * 8
.int gdt
gdt:
.quad 0 //NULL
//32-bit kernel code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0x9A
.byte 0xCF
.byte 0x00
//32-bit kernel code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0x92
.byte 0xCF
.byte 00
//32-bit user code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0xFA
.byte 0xCF
.byte 0x00
//32-bit user data
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0xF2
.byte 0xCF
.byte 00
//64-bit kernel code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0x9B
.byte 0xAF
.byte 0x00
//64-bit kernel code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0x93
.byte 0xCF
.byte 00
//64-bit user code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0xFB
.byte 0xAF
.byte 0x00
//64-bit user data
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0xF3
.byte 0xCF
.byte 00
pmfill:
.int pagedirPT + 0x7
.int 0
.section .bss
mb_ptr:
.space 16384
kernel_stack:
.align 4096
pagemapL4:
.space 4096
pagedirPT:
.space 4096

40
kernel/hw/framebuffer/framebuffer.cpp Normal file
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#include "framebuffer.hpp"
#include <genfont.h>
auto Framebuffer::plotPixel(int x, int y, int col) -> void {}
auto Framebuffer::plotChar(int x, int y, int c) -> void {
if (c > 65535) return;
int width = font_widths[c];
if (width == 16) this->x++;
if (!width) return;
int color;
for (int px = x * 8; px < (x * 8) + width; x++)
for (int py = y * 16; py < (y * 16) + 16; y++) {
color = rgbColor;
if (!useRGB) {
switch (curColor) {
case Color::BLACK: color = 0x000000; break;
case Color::BLUE: color = 0x0000AA; break;
case Color::GREEN: color = 0x00AA00; break;
case Color::CYAN: color = 0x00AAAA; break;
case Color::RED: color = 0xAA0000; break;
case Color::MAGENTA: color = 0xAA00AA; break;
case Color::BROWN: color = 0xAA5500; break;
case Color::LIGHT_GRAY: color = 0xAAAAAA; break;
case Color::GRAY: color = 0x555555; break;
case Color::LIGHT_BLUE: color = 0x5555FF; break;
case Color::LIGHT_GREEN: color = 0x55FF55; break;
case Color::LIGHT_CYAN: color = 0x55FFFF; break;
case Color::LIGHT_RED: color = 0xFF5555; break;
case Color::LIGHT_MAGENTA: color = 0xFF55FF; break;
case Color::YELLOW: color = 0xFFFF55; break;
case Color::WHITE: color = 0xFFFFFF; break;
}
rgbColor = color;
useRGB = true;
}
plotPixel(px, py, color);
}
}
Framebuffer::Framebuffer(int height, int width) : TTY(height, width) {}
Framebuffer::~Framebuffer() {}
auto Framebuffer::rgbSupport() -> bool { return true; }

12
kernel/hw/framebuffer/framebuffer.hpp Normal file
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#pragma once
#include <tty.hpp>
class Framebuffer : public TTY {
protected:
virtual auto plotPixel(int x, int y, int col) -> void;
virtual auto plotChar(int x, int y, int c) -> void;
public:
Framebuffer(int height, int width);
virtual ~Framebuffer();
virtual auto rgbSupport() -> bool;
};

9
kernel/hw/pc/vesafb/vesafb.cpp Normal file
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#include "vesafb.hpp"
#include <stdint.h>
auto VESAfb::plotPixel(int x, int y, int col) -> void {
int *lfb = (int *)((uintptr_t)(mb_info->framebuffer_addr));
lfb[y * mb_info->framebuffer_pitch + x] = col;
}
VESAfb::VESAfb(multiboot_info_t *mb_info)
: mb_info(mb_info), Framebuffer(mb_info->framebuffer_width / 8, mb_info->framebuffer_height / 16) {}
VESAfb::~VESAfb() {}

12
kernel/hw/pc/vesafb/vesafb.hpp Normal file
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#pragma once
#include "../../framebuffer/framebuffer.hpp"
#include <multiboot.h>
class VESAfb : public Framebuffer {
protected:
multiboot_info_t *mb_info;
virtual auto plotPixel(int x, int y, int col) -> void;
public:
VESAfb(multiboot_info_t *mb_info);
virtual ~VESAfb();
};