NAME
boot — bootstrap process
DESCRIPTION
Itanium-based System Hardware
An
Itanium®-based
system's bootstrap process involves the execution of four software components:
After the processor is reset,
firmware initializes and tests processors and
platform.
During initialization, the firmware lets a user interrupt and
configure CMOS and option ROMs.
It then transfers control to EFI, the Extensible Firmware Interface.
EFI, in turn, initializes EFI boot and runtime services and launches the Boot Manager.
The Boot Manager, which allows loading of EFI application or drivers from
EFI defined file system, loads and transfers control to
hpux.efi,
the HP-UX-specific bootstrap loader.
hpux.efi
then loads the HP-UX kernel object file from the HP-UX file system to
memory and transfers control to the loaded kernel image.
PA-RISC Hardware
The PA-RSIC bootstrap process involves
the execution of three software components:
After the processor is
RESET,
pdc,
the
processor-dependent code
(firmware), performs a self-test and initializes the processor.
It then loads and transfers control to
isl,
the operating-system-independent
initial system loader.
isl,
in turn, loads and transfers control to the
hpux
utility, the
HP-UX-specific
bootstrap loader.
hpux
then downloads the
HP-UX
kernel object file from an
HP-UX
file system and transfers control to the loaded kernel image.
Printable version
