static void module_load(multiboot_tag_t *tag)
{
/* calculate size and phy32 pointer */
size_t size = tag->module.mod_end - tag->module.mod_start;
elf64_ehdr_t *elf = (elf64_ehdr_t *) aphy32_to_virt(tag->module.mod_start);
/* make a new process */
proc_t *proc = proc_create();
if (!proc)
panic("couldn't create process for module");
/* switch our address space */
proc_switch(proc);
/* load the ELF file */
if (!elf64_load(elf, size))
panic("couldn't load elf64 file");
/* make a new thread */
thread_t *thread = thread_create(proc, 0);
if (!thread)
panic("couldn't create thread for module");
/* set entry point of the thread */
thread->rip = elf->e_entry;
/* add thread to the scheduler's ready queue */
thread_resume(thread);
}
void main_bsp(void)
{
// Print header
screen_write("Hydrogen v0.2b - http://github.com/farok/H2", 0, 0);
screen_write("Copyright (c) 2012 by Lukas Heidemann", 0, 1);
screen_write("-------------------------------------------------", 0, 2);
// Load the IDT
idt_load(idt_address, IDT_LENGTH);
idt_setup_loader();
// Initialize Hydrogen info tables and parse the multiboot tables
info_init();
multiboot_parse();
// Setup the heap
heap_init();
// Now parse the ACPI tables and analyze the IO APICs
acpi_parse();
ioapic_analyze();
// Find, check and load the kernel binary
kernel_find();
kernel_check();
elf64_load(kernel_binary);
kernel_analyze();
// Initialize interrupt controllers
lapic_detect();
lapic_setup();
ioapic_setup_loader();
pic_setup();
// Calibrate the LAPIC timer
lapic_timer_calibrate();
// Boot APs
info_cpu[lapic_id()].flags |= HY_INFO_CPU_FLAG_BSP;
smp_setup();
// Setup IDT and IOAPIC according to kernel header
idt_setup_kernel();
ioapic_setup_kernel();
// Setup fast syscall support
syscall_init();
// Setup mapping
kernel_map_info();
kernel_map_stack();
kernel_map_idt();
kernel_map_gdt();
// Set free address
info_root->free_paddr = (heap_top + 0xFFF) & ~0xFFF;
// Lower main entry barrier and jump to the kernel entry point
main_entry_barrier = 0;
kernel_enter_bsp();
}