Electronic device having an alterable configuration and methods of manufacturing and configuring the same

• US 8,583,907 B2
• Filed: 12/19/2012
• Issued: 11/12/2013
• Est. Priority Date: 03/18/2005
• Status: Expired due to Fees

• Current Assignee: Blackberry Limited
• Original Assignee: Blackberry Limited
• Inventors: Wood, Robert Henderson, Nguyen, Bao Quoc
• Primary Examiner(s): Bae, Ji H
• Application Number:
  US13/719,725
• Publication Number:
  US 20130111201A1
• Time in Patent Office: 328 Days
• Field of Search: None
• US Class Current: 713/1
• CPC Class Codes: G06F 9/4401 Bootstrapping security arrangements therefor G06F21/57
• CPC Class Codes: G06F 9/441 Multiboot arrangements, i.e. selecting an operating system to be loaded

Abstract

An electronic device having an alterable configuration includes a non-volatile memory configurable to include at least a first partition and a second partition, the non-volatile memory storing a boot ROM. The boot ROM is operable when executed by a processor of said electronic device to, in the event that a third partition is available, boot an operating system in the third partition, the operating system operable when booted to cause the third partition to be deleted and the second partition to be expanded to encompass memory freed by the deletion; and otherwise boot an operating system in the first partition.

Claims

1. An electronic device, comprising:

non-volatile memory including a first operating system in a first partition, a second operating system in a second partition, and a third partition;

the non-volatile memory storing a boot ROM that is operable when the boot ROM is executed by a processor of the electronic device to;

boot the second operating system when the first operating system is not available or is invalid;

otherwise, boot the first operating system, the first operating system operable when booted to delete or invalidate or make unavailable the first operating system and cause the third partition to expand to encompass memory freed by the deleting or the making invalid or the making unavailable the first operating system.

2. The electronic device of claim 1, wherein the boot ROM is further operable, when the boot ROM is executed by the processor of the electronic device, to verify the second operating system is valid prior to booting the second operating system.

3. The electronic device of claim 1, wherein the first operating system is further operable, when booted, to calibrate the electronic device prior to deleting or invalidating or making unavailable the first operating system.

4. The electronic device of claim 1, wherein the first operating system, when booted, is operable to delete the first operating system and expand the third partition to encompass the memory freed by the deletion.

5. The electronic device of claim 1, wherein the electronic device is a mobile device.

6. The electronic device of claim 1, wherein the boot ROM is executed by the processor when the electronic device is powered up.

7. The electronic device of claim 1, wherein the first operating system is a factory operating system and the second operating system is a shipping operating system.

8. The electronic device of claim 1, wherein the non-volatile memory further includes a memory configuration table comprising a register of partitions that is updated when partition addition, deletion, and modifications are made.

9. The electronic device of claim 1, wherein the first operating system is an installer operating system.

10. The electronic device of claim 9, wherein the electronic device is configured to download the installer operating system over-the-air.

11. A method comprising:

storing in non-volatile memory a first operating system in a first partition, a second operating system in a second partition, and a boot ROM;

the non-volatile memory including a third partition;

the boot ROM being operable when the boot ROM is executed by a processor of an electronic device to;

boot the second operating system when the first operating system is not available or is invalid;

otherwise, boot the first operating system, the first operating system operable when booted to delete or invalidate or make unavailable the first operating system and cause the third partition to expand to encompass memory freed by the deleting or the making invalid or the making unavailable the first operating system.

12. The method of claim 11 further comprising:

executing the boot ROM a first time, the boot ROM booting the first operating system, and the first operating system deleting the first partition to delete the first operating system.

13. The method of claim 12 further comprising:

subsequent to said executing the boot ROM a first time, executing the boot ROM a second time, the boot ROM booting the second operating system.

14. The method of claim 11 wherein the boot ROM is further operable, when the boot ROM is executed by the processor of the electronic device, to verify the second operating system is valid prior to booting the second operating system.

15. The method of claim 11, wherein the first operating system is further operable, when booted, to calibrate the electronic device prior to deleting or invalidating or making unavailable the first operating system.

16. The method of claim 11, wherein the first operating system, when booted, is operable to delete the first operating system and expand the third partition to encompass the memory freed by the deletion.

17. The method of claim 11, wherein the electronic device is a mobile device.

18. The method of claim 11, wherein the first operating system is a factory operating system and the second operating system is a shipping operating system.

19. The method of claim 11, further comprising storing in the non-volatile memory a memory configuration table comprising a register of partitions that is updated when partition addition, deletion, and modifications are made.

20. The method of claim 11, wherein the non-volatile memory is flash memory.