/*
* CPU-dependent initialization
*/
EXPORT ER cpu_initialize( void )
{
/* -------------------------------------------------------------------- */
/* setup idt */
/* -------------------------------------------------------------------- */
init_default_int_handlers( );
initIdt();
/* -------------------------------------------------------------------- */
/* collect cpuid information */
/* -------------------------------------------------------------------- */
initCpuInformation();
return E_OK;
}
void kernelMain(void) {
putStr("\nstarting kernel\n");
initGdt();
initTss();
initIdt();
putStr("mapping the first 2M with va = pa\n");
for (uint32_t p = 0; p < 0x200000; p += 4096) {
vmm_map(p,p);
}
CHECK((getcr0() & 0x80000000) == 0);
putStr("about to enable paging\n");
vmm_on();
CHECK((getcr0() & 0x80000000) != 0);
CHECK (vmm_pa(0xf0000000) == 0xffffffff);
uint32_t pa = vmm_frame();
vmm_map(0xf0000000, pa);
CHECK (vmm_pa(0xf0000000) != 0xffffffff);
CHECK ((vmm_pa(0xf0000123) & 0xfff) == 0x123);
CHECK(vmm_dirty(0xf0000000) == 0);
CHECK(vmm_accessed(0xf0000000) == 0);
CHECK(peek(0xf0000000) == 0);
CHECK(vmm_dirty(0xf0000000) == 0);
CHECK(vmm_accessed(0xf0000000) == 1);
poke(0xf0000000, 0x12345678);
CHECK(peek(0xf0000000) == 0x12345678);
CHECK(vmm_dirty(0xf0000000) == 1);
CHECK(vmm_accessed(0xf0000000) == 1);
CHECK(vmm_dirty(0xe0000000) == 0);
CHECK(vmm_accessed(0xe0000000) == 0);
CHECK(vmm_pa(0x40000000) == 0xffffffff);
vmm_map(0xe0000000, pa);
CHECK(peek(0xe0000000) == 0x12345678);
CHECK(vmm_dirty(0xe0000000) == 0);
CHECK(vmm_accessed(0xe0000000) == 1);
CHECK(peek(0x44444444) == 0);
CHECK(vmm_dirty(0x44444000) == 0);
CHECK(vmm_accessed(0x44443000) == 0);
CHECK(vmm_accessed(0x44444000) == 1);
CHECK(vmm_accessed(0x44445000) == 0);
poke(0x88888888,0x88888888);
CHECK(peek(0x88888888) == 0x88888888);
vmm_map(0xccccc000, vmm_pa(0x88888000));
CHECK(peek(0xccccc888) == 0x88888888);
CHECK (vmm_pa(0xccccc666) == vmm_pa(0x88888666));
vmm_unmap(0xccccc000);
CHECK(peek(0xccccc888) == 0);
CHECK(peek(0x88888888) == 0x88888888);
shutdown();
}
