int
main(int argc, char *argv[])
{
START(argc, argv, "util_cpuid");
check_cpu_features();
DONE(NULL);
}
/**
* Get the system going.
*
* Prepare all system-specific structures and initialise BP and APs. Enter root domain and continue there.
*
* TODO: relate Pistachio SMP startup routines here.
*/
extern "C" void kernel_startup()
{
// No dynamic memory allocation here yet, global objects not constructed either.
run_global_ctors();
global_descriptor_table_t gdt;
kconsole << "Created GDT." << endl;
interrupt_descriptor_table_t::instance().install();
kconsole << "Created IDT." << endl;
// Grab the bootinfo page and discover where is our bootimage.
bootinfo_t* bi = new(bootinfo_t::ADDRESS) bootinfo_t;
address_t start, end;
const char* name;
if (!bi->get_module(1, start, end, name))
{
PANIC("Bootimage not found!");
}
bootimage_t bootimage(name, start, end);
parse_cmdline(bi);
prepare_infopage(); // <-- init domain info page
check_cpu_features(); // cmdline might affect used CPU feats? (i.e. noacpi flag)
// TODO: CREATE INITIAL MEMORY MAPPINGS PROPERLY HERE
// TEMPORARY: just map all mem 0..min(16Mb, RAMtop) to 1-1 mapping? for simplicity
// int ramtop = 16*MiB;
bi->append_vmap(0, 0, 16*MiB);//min(16*MiB, ramtop));
timer_v1::closure_t* timer = init_timer();
timer->enable(0); // enable timer interrupts
kconsole << "Timer interrupt enabled." << endl;
x86_cpu_t::enable_fpu();
kconsole << "FPU enabled." << endl;
// kconsole << WHITE << "...in the living memory of V2_OS" << LIGHTGRAY << endl;
root_domain_t root_dom(bootimage);
// kconsole << "+ root_domain entry @ 0x" << root_dom.entry() << endl;
// Create an execution context and activate it.
continuation_t::gpregs_t gpregs;
gpregs.esp = read_stack_pointer();
gpregs.eax = 0;
gpregs.ebx = 0;
gpregs.eflags = 0x03002; /* Flags for root domain: interrupts disabled, IOPL=3 (program can use IO ports) */
new_context.set_gpregs(gpregs);
new_context.set_entry(root_dom.entry());//FIXME: depends on gpregs being set before this call!
new_context.activate(); // we have a liftoff!
/* Never reached */
PANIC("root domain returned!");
}
extern "C" void
cpu_init()
{
if (check_cpu_features() != B_OK)
panic("You need a 68030 or higher in order to boot!\n");
gKernelArgs.num_cpus = 1;
// this will eventually be corrected later on
// ...or not!
}
