extern "C" void
start(void *openFirmwareEntry)
{
char bootargs[512];
// stage2 args - might be set via the command line one day
stage2_args args;
args.heap_size = HEAP_SIZE;
args.arguments = NULL;
of_init((int (*)(void*))openFirmwareEntry);
// check for arguments
if (of_getprop(gChosen, "bootargs", bootargs, sizeof(bootargs))
!= OF_FAILED) {
static const char *sArgs[] = { NULL, NULL };
sArgs[0] = (const char *)bootargs;
args.arguments = sArgs;
args.arguments_count = 1;
}
determine_machine();
console_init();
if ((gMachine & MACHINE_QEMU) != 0)
dprintf("OpenBIOS (QEMU?) OpenFirmware machine detected\n");
else if ((gMachine & MACHINE_PEGASOS) != 0)
dprintf("Pegasos PowerPC machine detected\n");
else
dprintf("Apple PowerPC machine assumed\n");
// Initialize and take over MMU and set the OpenFirmware callbacks - it
// will ask us for memory after that instead of maintaining it itself
// (the kernel will need to adjust the callback later on as well)
arch_mmu_init();
if (boot_arch_cpu_init() != B_OK)
of_exit();
if (init_real_time_clock() != B_OK)
of_exit();
// check for key presses once
sBootOptions = 0;
int key = console_check_for_key();
if (key == 32) {
// space bar: option menu
sBootOptions |= BOOT_OPTION_MENU;
} else if (key == 27) {
// ESC: debug output
sBootOptions |= BOOT_OPTION_DEBUG_OUTPUT;
}
gKernelArgs.platform_args.openfirmware_entry = openFirmwareEntry;
main(&args);
// if everything goes fine, main() never returns
of_exit();
}
void platform_init(void)
{
uart_init();
platform_init_keyboard();
#ifndef ARCH_X86_64
pci_init();
#endif
/* MMU init for x86_64 done after the heap is setup */
#ifdef ARCH_X86_64
arch_mmu_init();
platform_init_mmu_mappings();
#endif
}