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#include "kernel.h"
#include "log.h"
#include "serial.h"
#include "asm_pic.h"
#include "multiboot.h"
#include "acpi.h"
#include "gdt.h"
#include "interrupts.h"
#include "mem.h"
#include "vmem.h"
//-- clean below headers --//
#include "asm_start.h"
#include "compositor.h"
#include "sysfs.h"
#include "pci.h"
#include "e1000.h"
#include "pipe.h"
#include "testing/testing.h"
#include "ext2.h"
#include "apic.h"
#include "kernel/scheduler.h"
#include "driver/timer.h"
#include "driver/keyboard.h"
#include "driver/mouse.h"
#include "syscalls.h"
#include "fifo.h"
#include "asm_smp.h"
#include "asm_x86.h"
#include "ringbuffer.h"
#include "driver/screen.h"
#include "smp.h"
#include "fs/elf.h"
#include "kmalloc.h"
#include "driver/vesa.h"
#include "asm_pit.h"
/** F00L 0S Entry point (called directly from asm/multiboot.asm)
*
* After this procedure completes we are in a well defined state.
*
* * All Processors are up and running in 32bit protected mode.
* * Interrupts are installed and enabled:
*
* - PS/2 Keyboard CPU0
* - PS/2 Mouse CPU0
* - PIT Timer (20Hz) (DISABLED in apic.c) CPU0
* - APIC Timer (Frequency defined in kernel.h) ALL CPUS
* - E1000 CPU0
*
* * Software Interrupts:
*
* - Syscalls
* - IPI
*
* * Framebuffer is in a known state.
* * Paging is enabled.
* * Each CPU runs on its own stack at VMEM_CPU_STACK
* * Each CPU has its own private page at VMEM_CPU_PRIVATE
* * We are ready to start scheduling on the next interrupt.
*
*/
void kernel_main(uint32_t eax,uint32_t ebx)
{
// -- COM1 -- //
serial_init();
klog("Communication Port (COM1) initialized.");
// -- PR & VERSION BANNER -- //
klog("======================================");
klog("F00L- 0S / The Fool's Operating System");
klog("(C) 2018 / Michal Idziorek (m.i@gmx.at)");
klog("Compiled on: %s at %s",__DATE__,__TIME__);
klog("Version: git-commit: %s",GIT_REVISION);
klog("======================================");
uint32_t *top_kernel_vmem=VMEM_KERNEL+VMEM_KERNEL_PAGES*4096;
klog("The Kernel was loaded at: 0x%08X - 0x%08X",get_kernel_start(),get_kernel_end());
klog("0x00000000 - 0x%08X will get identity mapped", VMEM_KERNEL_PAGES*4096);
if(kernel_end>=top_kernel_vmem)kpanic("kernel to big. increase VMEM_KERNEL_PAGES");
fixme("still fear overrun of stack");
// -- DISABLE LEGACY PIC -- //
klog("Remapping & Disabling Programmable Interrupt Controller (PIC) ...");
fixme("io_wait & spurious interrupts");
asm_pic_setup();
// -- GET CONFIGS -- //
klog("Read Multiboot Structures ...");
multiboot_information *cfg_multiboot;
cfg_multiboot=multiboot_read(eax, ebx,false); // true for silent
// elf_multiboot_read(cfg_multiboot); // just show kernel section headers
klog("Read Advanced Power Configuration Interface (ACPI) Structures ...");
acpi_information cfg_acpi;
bool acpi_found=acpi_fill(&cfg_acpi);
fixme("Try to read (legacy) multiprocessor mp strucutres as well (see: xxx/mp.c)");
if(!acpi_found) kpanic("We Currently rely on ACPI Structures Sorry!");
// -- GDT -- //
klog("Global Descriptor Table (GDT) init ...");
gdt_init();
// -- IVT -- //
klog("Interrupt Vector Table (IVT) init ...");
interrupts_init(0x08);
interrupts_install();
// -- PCI SCAN --/
klog("PCI init ...");
uint32_t e1000_addr=pci_init();
klog("E1000 addr=0x%08X",e1000_addr);
// -- MEMORY MANAGEMENT -- //
klog("Memory init ... ");
mem_init(cfg_multiboot);
klog("Vritual Memory / Paging init ... ");
fixme("do not disable anymore on context switching!");
fixme("write convenneint management funcs as: mapCPU, mapKErnel, map USerspace..");
fixme("move stack and guard with empty pages!");
vmem_init(cfg_multiboot,&cfg_acpi,e1000_addr);
struct pdirectory_struct *dir=vmem_kernel_dir();
x86_set_page_directory(dir);
x86_paging_enable();
// -- MOUNTS -- //
klog("Mounting ... ");
ext2_dump_info(VMEM_EXT2_RAMIMAGE);
ext2_mount("/");
sysfs_mount("/sys/");
// -- APIC -- //
klog("Advanced Programmable Interrupt Controller (APIC) config ...");
apic_init(&cfg_acpi);
ioapic_config();
// -- VESA -- //
/*
fixme("tell terminal syscall somehow if we are vga or textmode");
klog("Video Electronics Standards Association (VESA) init ... ");
// binfont has to fit in ONE ext2 block //
fixme("support binfonts spanning multiple blocks?");
uint32_t inode= ext2_filename_to_inode(VMEM_EXT2_RAMIMAGE,VESA_FONT_PATH);
uint32_t addr= ext2_inode_blockstart( VMEM_EXT2_RAMIMAGE,inode,0);
vesa_init(cfg_multiboot,addr); // this only sets some internal static variables
// -- STD STREAMS -- //
klog("Standard Streams init ...");
fd_init_std_streams(0,cfg_multiboot->framebuffer_type!=2);
*/
klog("Compositor init ...");
compositor_init(cfg_multiboot->framebuffer_width,cfg_multiboot->framebuffer_height,cfg_multiboot->framebuffer_pitch);
compositor_set_background("/home/miguel/bg.ppm");
// -- KB -- //
klog("Keyboard init ...");
keyboard_init();
// -- MOUSE -- //
klog("Mouse init ...");
mouse_init();
// -- E1000 INIT (TODO: only if present!) --/
if(e1000_addr)
{
#ifndef DISABLE_E1000
klog("E1000 init ...");
e1000_init(e1000_addr);
#endif
}
// we wait until the end since the time will only start ticking once
// we enable interrupts.
klog("Programmable Interval Timer (PIT) init ...");
klog("Reading CMOS Clock ...");
uint64_t unixtime=timer_init();
klog("Unix Time = %u seconds",unixtime);
klog("Symmetric Multi Processing (SMP) start ... ");
for(int i=1;i<cfg_acpi.processors;i++)apic_sipi(i,0x7);
smp_bsp(); // start base processor
}
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