kboot_get_phys_load_segment
staging = kboot_get_phys_load_segment();
staging = trampolinebase = kboot_get_phys_load_segment();
trampolinebase = kboot_get_phys_load_segment();
uint64_t kboot_get_phys_load_segment(void);
pa_start = kboot_get_phys_load_segment();