visor/src/efi.c

#include <stdbool.h>

#include <efi.h>
#include <efilib.h>

#include "virt.h"
#include "bootstrap.h"
#include "procvisor.h"

struct virt_vtable *virt = &virt_vtable_intel;

static char virt_err[100];

void *
bs_alloc(size_t size)
{
	size_t npages = (size + (4096 - 1)) / 4096;
	void *ptr;
	uefi_call_wrapper(BS->AllocatePages, 4, AllocateAnyPages, EfiRuntimeServicesData, npages, &ptr);
	return ptr;
}

EFIAPI
EFI_STATUS
efi_main(EFI_HANDLE imageHandle, EFI_SYSTEM_TABLE *systemTable)
{
	InitializeLib(imageHandle, systemTable);

	AsciiPrint("Pointer Size: %d\n", (int)sizeof(void *));

	AsciiPrint("efi_main: %p\n", (void *)efi_main);

	AsciiPrint("* Setting up processor structures\n");
	struct procvisor *pv = proc_setup();
	(void)pv;

	AsciiPrint("* Checking for VT-x Support\n");
	if (!virt->has_support(virt_err, sizeof virt_err)) {
		AsciiPrint(virt_err);
	} else {
		AsciiPrint("* Enabling VT-x\n");
		virt->enable();
		AsciiPrint("* VT-x enabled!\n");
	}

	for (;;) {}

	return EFI_SUCCESS;
}