MPFPS_RAM_WIN_LEN
mapsize = MPFPS_RAM_WIN_LEN;
fptr = psm_map_phys(ebda_start, MPFPS_RAM_WIN_LEN, PROT_READ);
apic_find_fps_sig(fptr, MPFPS_RAM_WIN_LEN)))
psm_unmap_phys(fptr, MPFPS_RAM_WIN_LEN);
fptr = psm_map_phys(base_mem_end, MPFPS_RAM_WIN_LEN,
MPFPS_RAM_WIN_LEN)))
psm_unmap_phys(fptr, MPFPS_RAM_WIN_LEN);