Hardware cross-emulation using personas

• US 7,373,495 B2
• Filed: 05/17/2001
• Issued: 05/13/2008
• Est. Priority Date: 05/17/2001
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Clapper, Edward O.
• Primary Examiner(s): Cao; Chun
• Assistant Examiner(s): Wang; Albert
• Application Number:
  US09/861,209
• Publication Number:
  US 20020171679A1
• Time in Patent Office: 2,553 Days
• Field of Search: 345/744, 713/2, 717/176
• US Class Current: 713/2
• CPC Class Codes: G06F 9/4406 Loading of operating system
• CPC Class Codes: G06F 9/4416 Network booting; Remote initial program loading [RIPL]

Abstract

An apparatus and method for a device to boot as though it were another device. The various devices have published personas describing their operation. A persona selection interface enables a user to select a remote device as which the local device should reboot. Updated personas can be retrieved from the remote devices themselves, or from a persona server. If the emulated operation requires a resource not locally available, the local device negotiates with the remote device to share the remote resource, and failing that, the local device emulates the resource.

Claims

1. An emulation apparatus for communicating with at least one external device, the emulation apparatus comprising:

a communication interface for connecting to the at least one external device;

a persona selection interface for enabling a user to select between a persona of the apparatus and a persona of one of the at least one external device;

storage coupled to the persona emulation engine to store at least one locally stored copy of a persona defining the at least one external device, the persona to be received from one of the at least one external device and a persona server, wherein the persona comprises information sufficient to emulate operations of the at least one external device on the emulation apparatus; and

a persona emulation engine of the emulation apparatus, coupled to the communication interface and the persona selection interface, for booting the emulation apparatus with the persona selected by the user, wherein after booting, the emulation apparatus is to operate as the selected external device.

2. The apparatus of claim 1 further comprising:

stored in the storage, respective local copies of at least one persona of at least one external device.

3. The apparatus of claim 1 further comprising:

a processor coupled to the persona emulation engine; and

stored in the storage, a plurality of boot sequences for execution by the processor in response to the persona selected by the user, wherein each of the plurality of boot sequences corresponds to a respective external device persona, and wherein booting of the emulation apparatus with the selected persona boots the emulation apparatus with a boot sequence corresponding to the selected external device.

4. The apparatus of claim 1 further comprising:

a persona enumerator for determining whether other persona equipped external devices are coupled to the communication interface.

5. The apparatus of claim 4 wherein the persona enumerator comprises:

means for sending a ping to previously seen external devices over the communication interface.

6. The apparatus of claim 4 wherein the persona enumerator comprises:

means for sending a global inquiry to elicit identifying responses from external devices over the communication interface.

7. The apparatus of claim 4 wherein the persona enumerator comprises:

means for announcing the apparatus'"'"'s presence to external devices over the communication interface.

8. The apparatus of claim 1 further comprising:

a data format converter; and

means for hardware format emulation.

9. The apparatus of claim 8 further comprising:

an interface emulation file coupled to the persona selection interface.

10. The apparatus of claim 1 further comprising:

means, responsive to the apparatus having been booted as an external device which includes a resource not provided by the apparatus, for accessing that resource over the communication interface.

27. The emulation apparatus as recited in claim 1, wherein the communication interface is used to negotiate with the selected external device to allow the emulation apparatus to access a hardware component controlled by the selected external device.

11. An apparatus comprising:

a processor, the processor to execute a persona emulation engine for emulating personas of a plurality of external devices;

storage coupled to the processor for storing a plurality of locally stored copies of remote personas of respective external devices, each remote persona defining the respective external device and comprising information sufficient to emulate operations of the at respective external device on the apparatus;

a display;

means, coupled to the processor and the storage, for presenting a persona selection interface on the display, the persona selection interface including identifiers of the external devices, the means enabling a user to select between a persona of the apparatus and the external devices; and

means for booting the apparatus using the locally stored copy of the remote persona of an external device selected by the user via the persona selection interface, wherein each remote persona comprises information sufficient for the apparatus to operate as the respective external device after booting, wherein the means for booting further comprises the persona emulation engine of the apparatus, coupled to the means for presenting a persona selection interface, for booting the apparatus with the persona selected by the user, wherein after booting, the apparatus is to operate as the selected external device.

12. The apparatus of claim 11 wherein the persona selection interface comprises:

a plurality of controls each identifying a respective one of the external devices.

13. The apparatus of claim 12 wherein the persona selection interface comprises:

an indication that a specified external device is not available.

14. The apparatus of claim 12 wherein the persona selection interface comprises:

an indication that a published persona of a specified external device has expired.

15. The apparatus of claim 12 wherein the persona selection interface comprises:

an indication that a specified external device has announced the availability of a remote persona that is newer than a copy of its remote persona presently stored by the apparatus.

16. The apparatus of claim 12 wherein the persona selection interface comprises:

a plurality of graphical user interface buttons each corresponding to a respective external device.

17. A method of operating an apparatus, the method comprising:

the apparatus presenting a persona selection interface to a user, the persona selection interface identifying a plurality of external devices;

receiving from the user a selection of one of the external devices;

checking whether an updated persona is available for the selected external device; and

if an updated persona is available,

retrieving the updated persona from the selected external device, prior to rebooting, and

rebooting being with the undated persona; and

rebooting the apparatus with one of the a persona of the selected external device or the updated persona of the selected external device, wherein upon rebooting, the apparatus is to operate as the selected external device.

18. The method of claim 17 further comprising:

if no persona is available for the selected external device, receiving another selection from the user.

19. The method of claim 17 wherein the retrieving comprises:

receiving the updated persona from a persona server.

20. The method of claim 17 further comprising, prior to rebooting:

setting a boot sequence indicator; and

copying a BIOS and a driver portion of the selected external device'"'"'s persona.

21. A method of operating an apparatus, comprising:

the apparatus presenting a persona selection interface to a user, the persona selection interface identifying a plurality of external devices;

receiving from the user a selection of one of the external devices;

setting a boot sequence indicator; and

copying a BIOS and a driver portion of the selected external device'"'"'s persona;

rebooting the apparatus with a persona of the selected external device, wherein upon rebooting, the apparatus is to operate as the selected external device;

if an emulated operation of the selected external device requires a hardware resource,

(A) if the hardware resource is available locally within the apparatus, using the locally available hardware resource,

(B) if the hardware resource is not locally available,

(i) negotiating with the selected external device and responsive to the negotiating,

(a) if the selected external device will share the hardware resource, using the hardware device of the selected external device, and

(b) if the selected external device will not share the hardware resource, locally emulating operation of the hardware resource.

22. A system comprising:

a communication network; and

coupled to the communication network, a plurality of persona equipped devices, each including,

(a) a common data interface,

(b) an interface emulation file,

(c) a persona selection interface,

(d) storage for locally storing copies of remote personas of at least some of the other persona equipped devices,

(e) a processor,

(f) a communication interface,

(g) a persona emulation engine,

wherein upon rebooting, each persona equipped device is to operate as a selected other persona equipped device using a locally stored copy of a remote persona corresponding to the selected persona equipped device.

23. The system of claim 22 wherein each of the persona equipped devices further comprises:

a persona overlay controller;

an emulation negotiator;

a data format converter; and

a hardware format; and

a plurality of boot sequences.

24. The system of claim 22 further comprising:

a persona server coupled to the network for providing updated personas of emulated devices to emulating devices of the plurality of persona equipped devices.

25. A machine accessible storage medium having instructions stored therein which, when executed by a machine, cause the machine to:

present a persona selection interface to a user, the persona selection interface identifying a plurality of external devices;

receive from the user a selection of one of the external devices;

check whether an updated persona is available for the selected external device, and

if an updated persona is available,

retrieve the updated persona from the selected external device, prior to rebooting, and

use the updated persona in a reboot; and

reboot the machine with one of the a persona of the selected external device or the updated persona of the selected external device, wherein upon rebooting, the machine is to operate as the selected external device.

26. The machine accessible storage medium of claim 25 further including therein instructions which, when executed by the machine, cause the machine to:

if an emulated operation of the selected external device requires a hardware resource,

(A) if the hardware resource is available locally within the apparatus, use the locally available hardware resource, and

(B) if the hardware resource is not locally available,

(i) negotiate with the selected external device and

(a) if the selected external device will share the hardware resource, use the hardware device of the selected external device, and

(b) if the selected external device will not share the hardware resource, locally emulate operation of the hardware resource.