138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
/*
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* @author xamidev <xamidev@riseup.net>
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* @brief PepperOS kernel entry point
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* @license GPL-3.0-only
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*/
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#include <stdbool.h>
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#include <stddef.h>
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#include <limine.h>
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#include "io/term/term.h"
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#include "io/term/printf.h"
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#include "io/serial/serial.h"
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#include "mem/gdt/gdt.h"
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#include "mem/misc/utils.h"
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#include "idt/idt.h"
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#include "kernel.h"
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#include "time/timer.h"
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#include "io/kbd/ps2.h"
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#include "mem/paging/pmm.h"
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#include "mem/paging/paging.h"
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#include "mem/paging/vmm.h"
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#include "mem/heap/kheap.h"
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#include "sched/process.h"
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#include "sched/scheduler.h"
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#include "config.h"
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#include "io/term/flanterm.h"
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#include "io/term/flanterm_backends/fb.h"
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// Limine version used
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__attribute__((used, section(".limine_requests")))
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volatile LIMINE_BASE_REVISION(3);
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struct flanterm_context *ft_ctx;
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// Halt and catch fire (makes machine stall)
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void hcf()
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{
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CLEAR_INTERRUPTS; for (;;)asm("hlt");
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}
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// Doing nothing (can be interrupted)
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void idle() {SET_INTERRUPTS; for(;;)asm("hlt");}
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// uint8_t kernel_stack[KERNEL_STACK_SIZE] __attribute__((aligned(16)));
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struct boot_context boot_ctx;
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extern volatile struct limine_framebuffer_request framebuffer_request;
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extern volatile struct limine_memmap_request memmap_request;
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extern volatile struct limine_hhdm_request hhdm_request;
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extern volatile struct limine_kernel_address_request kerneladdr_request;
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extern struct process_t* processes_list;
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extern struct process_t* current_process;
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void pedicel_main(void* arg)
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{
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// FROM THE NEXT LINE ONWARDS, CANNOT WRITE TO FRAMEBUFFER WITHOUT PAGE FAULT!
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//printf("\n\nWelcome to PepperOS! Pedicel speaking.\nNothing left to do, halting the system!");
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}
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void idle_main(void* arg)
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{
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for(;;)asm("hlt");
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}
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void flanterm_free_wrapper(void* ptr, size_t size)
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{
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(void)size;
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kfree(ptr);
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}
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extern uintptr_t kheap_start;
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// This is our entry point
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void kmain()
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{
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if (!LIMINE_BASE_REVISION_SUPPORTED) hcf();
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serial_init();
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// Populate boot context
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boot_ctx.fb = framebuffer_request.response ? framebuffer_request.response->framebuffers[0] : NULL;
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boot_ctx.mmap = memmap_request.response ? memmap_request.response : NULL;
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boot_ctx.hhdm = hhdm_request.response ? hhdm_request.response : NULL;
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boot_ctx.kaddr = kerneladdr_request.response ? kerneladdr_request.response : NULL;
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boot_mem_display();
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pmm_init(boot_ctx.mmap, boot_ctx.hhdm);
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// Remap kernel , HHDM and framebuffer
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paging_init(boot_ctx.kaddr, boot_ctx.fb);
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kheap_init();
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uint32_t bgColor = 0x252525;
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ft_ctx = flanterm_fb_init(
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kmalloc,
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flanterm_free_wrapper,
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boot_ctx.fb->address, boot_ctx.fb->width, boot_ctx.fb->height, boot_ctx.fb->pitch,
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boot_ctx.fb->red_mask_size, boot_ctx.fb->red_mask_shift,
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boot_ctx.fb->green_mask_size, boot_ctx.fb->green_mask_shift,
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boot_ctx.fb->blue_mask_size, boot_ctx.fb->blue_mask_shift,
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NULL,
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NULL, NULL,
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&bgColor, NULL, // &bgColor
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NULL, NULL,
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NULL, 0, 0, 1,
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0, 0,
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0,
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0
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);
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CLEAR_INTERRUPTS;
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gdt_init();
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idt_init();
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timer_init();
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vmm_init();
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process_init();
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struct process_t* idle_proc = process_create("idle", (void*)idle_main, 0);
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struct process_t* pedicel = process_create("pedicel", (void*)pedicel_main, 0);
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process_display_list(processes_list);
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scheduler_init();
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current_process = idle_proc;
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current_process->status = RUNNING;
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SET_INTERRUPTS;
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keyboard_init(FR);
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kputs(PEPPEROS_SPLASH);
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idle();
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}
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