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Creating scheduler, debug paging

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This commit is contained in:
Loic Guegan 2021-05-01 11:37:52 +02:00
parent fb69c7b058
commit 4f08ba2b1d
16 changed files with 227 additions and 88 deletions
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38
src/boucane.cc
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@ -1,4 +1,5 @@
#include "boucane.hpp"
#include "core/apic.hpp"
#include "core/paging.hpp"
#include "drivers/memtext.hpp"
#include "core/idt.hpp"
@ -9,6 +10,7 @@
#include "libs/stdio.hpp"
#include "libs/string.hpp"
#include "drivers/bmp.hpp"
#include "core/scheduler.hpp"
u64 kvar_kernel_vma;
u64 kvar_stack_pma;
@ -25,26 +27,35 @@ void (*printk)(char *str,...)=printf;
extern u64 gdt64_tss;
void configure_tss(){
u64 tss_addr=(u64)&kvar_tss;
u32 desc1=(tss_addr&0xFFFF)<<16|(sizeof(TSS)&0xFFFF);
tss_addr>>=16;
u32 desc2=(tss_addr&0xFF)|((tss_addr>>8)<<24);
tss_addr>>=16;
u32 desc3=tss_addr;
// Get TSS physical address
u64 tss_addr=(u64)PHY(&kvar_tss);
u32 limit=sizeof(TSS);
// Options
u32 options=0b1001; // 64-bits TSS type
options|=(0b1000<<4); // Present
u32 desc1=(tss_addr&0xFFFF)<<16|(limit&0xFFFF);
u32 desc2=(tss_addr&0xFF);
desc2|=0b1001<<8; // Type
desc2|=0b111<<13; // Permission & present
u32 desc3=((limit>>8)&0xFFFF)|(limit>>24);
// Configure GDT
u32 *gdt_entry=(u32*)&gdt64_tss;
gdt_entry[0]=desc1;
gdt_entry[1]=desc2|(options<<8);
gdt_entry[1]=desc2;
gdt_entry[2]=desc3;
gdt_entry[3]=0;
// Configure segment
kvar_tss.rsp0=(u64)VIRT(kvar_stack_pma);
asm(
"mov $0x28, %ax \n\t"
"ltr %ax"
);
}
void task1(){
u64 a=0xEEEEEE;
DUMP(a);
while(1);
}
extern "C" void boucane(u64 mb_info){
@ -60,11 +71,12 @@ extern "C" void boucane(u64 mb_info){
asm volatile ("movq $res_binary_res_logo_bmp_end, %0":"=m"(kvar_logo_bmp_end));
// Init data structures
configure_tss();
asm volatile ("call load_gdt");
configure_tss();
paging_enable();
memtext_init();
idt_enable_interrupt();
apic_enable();
// Looking for framebuffer
FRAMEBUFFER fb_info;
@ -101,7 +113,7 @@ extern "C" void boucane(u64 mb_info){
printk("RAM:%dMB\n", mem);
}
printk("%x",&kvar_tss);
DUMP(&gdt64_tss);
//create_task((void*)task1, 50);
//scheduler_start();
while(1);
}