Push button shutdown and reset of embedded systems

• US 6,438,684 B1
• Filed: 11/03/1997
• Issued: 08/20/2002
• Est. Priority Date: 11/03/1997
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: 3Com Corporation (HP Inc.)
• Inventors: Dempsey, Michael P., Mitchell, Craig G., Salzman, Scot W., Pandoy, Chandra S., DʼSouza, Christian A.
• Primary Examiner(s): Lee, Thomas
• Assistant Examiner(s): DU, THUAN N
• Application Number:
  US08/963,403
• Time in Patent Office: 1,751 Days
• Field of Search: 395/575, 395/651, 395/750, 395/652, 370/116, 713/1, 713/100, 714/24, 714/25
• US Class Current: 713/1
• CPC Class Codes: G06F 1/24 Resetting means
• CPC Class Codes: G06F 9/442 Shutdown

Abstract

A system for shutting down and resetting an embedded system having a general purpose computing platform. A push button is provided for generating a push button reset signal to the shutdown and reset manager. The shutdown and reset manager receives the management reset signal and initiates a shutdown of the operating system. When the operating system has shutdown, the user presses the push button again. The second receipt of the push button reset signal initiates a hardware reset.

Claims

1. A system for shutting down an embedded system having a general purpose computing environment comprising:

an operating system operable to provide resources for embedded applications and general purpose computing, to control access to a disk-storage system and to manage a plurality of temporary files stored in the disk-storage system;

a chassis having a plurality of cards therein, the plurality of cards operable by the operating system, at least one of the plurality of cards being a management card for managing the operation of the chassis, the management card comprising a reset push button for generating a reset signal when a user presses the reset push button; and

a shutdown and reset manager for sensing said reset signal, said shutdown and reset manager being operable to initiate an orderly shutdown of the operating system in response to said reset signal by saving the temporary files and synchronizing the disk-storage system.

2. The system of claim 1 wherein said shutdown and reset manager generates a hardware reset in response to a second generation of the reset signal when the user presses the reset push button a second time.

3. The system of claim 1 further comprising:

a display device for displaying a shutdown status message.

4. The system of claim 1 wherein:

the chassis is operatively corrected to a keyboard;

the chassis is located separate from the keyboard, and

the push button is mounted on the chassis, thereby enabling the user to orderly shutdown the embedded system by pushing the push button on the chassis.

34. The system of claim 1 wherein the shutdown and reset manager initiates a reset of the operating system and the plurality of cards in response a user press of the reset push button a second time.

5. A method for shutting down an embedded system having a general purpose operating environment and an operating system, the embedded system including a chassis having a plurality of cards therein, the plurality of cards operable by the operating system, at least one of the plurality of cards being a management card for managing the operation of the chassis, the management card comprising a reset push button for generating a reset signal when a user presses the reset push button, the method comprising the steps of

generating a reset signal in response to a user press of the reset push button;

receiving the reset signal; and

orderly shutting down the operating system in response to the reset signal by saving any open temporary files.

6. The method of claim 5 Further comprising the steps of:

generating a second reset signal when the user presses the reset push button a second time; and

resetting the embedded system in response to the second reset signal.

7. A system for shutting down an embedded system having a general purpose computing environment comprising:

an operating system operable to provide resources for embedded applications and general purpose computing, to control access to a disk-storage system and to manage a plurality of temporary files stored in the disk-storage system;

a chassis having a plurality of cards therein, the plurality of cans operable by the operating system, at least one of the plurality of cards being a management card for managing the operation of the chassis, the management card comprising a reset push button for generating a reset signal when a user presses the reset push button; and

a shutdown and reset manager for sensing said reset signal, said shutdown and reset manager initiating an orderly shutdown of the operating system when the user presses the reset push button a first time by saving the temporary files and synchronizing the disk-storage system, and generating a hardware reset when the user presses the reset push button a second time.

8. The system of claim 7 further comprising a display device for displaying a shutdown status message.

9. An improvement to a network access server for providing network communications control, the network access server comprising at least one telephone line interface connected to a computer network interface by a high-speed bus, and an operating system operable to provide resources for embedded applications and general purpose computing, and to control access to a disk-storage system and to manage a plurality of temporary files stored in the disk-storage system, the improvement comprising:

a chassis having a plurality of cards therein, the plurality of cards operable by the operating system, at least one of the plurality of cards being a management card for managing the operation of the chassis, the management card comprising a reset push button for generating a reset signal when a user presses the reset push button; and

a shutdown and reset manager for sensing said reset signal, said shutdown and reset manager initiating an orderly shutdown of the operating system in response to said reset signal by saving the temporary files and synchronizing the disk-storage system.

10. The improvement of claim 9 wherein the shutdown and reset manager generates a hardware reset when the user presses the reset push button a second time.

11. The improvement of claim 9 further comprising a display device for displaying a shutdown status message.

12. The improvement of claim 9 further comprising:

a telephone line interface card; and

a gateway card for providing computer network access.

13. The improvement of claim 12 wherein:

the management card includes a display device for displaying a shutdown message.

14. The improvement of claim 9 wherein the operating system is the WINDOWS operating system from Microsoft.

15. A system for shutting down a computing system comprising:

a general purpose computing platform comprising a processor and a storage system, the general purpose computing platform being operable to execute a plurality of general purpose applications stored in tho storage system, said general purpose applications being operable to provide a user with computing functions during execution,

the general purpose computing platform being connected to at least one embedded application operable to perform real-time functions using at least one real-time operating system;

an operating system to execute in the general purpose computing platform the operating system operable to provide computing resources to the general-purpose applications, the storage system being operable to store at least one temporary data file associated with the at least one embedded application and to close the at least one temporary data file during an orderly shutdown of the operating system;

a chassis having a plurality of cards therein. the plurality of cards operable by the operating system, at least one of the plurality of cards being a management card for managing the operation or the chassis, the management card comprising a reset push button for generating a reset signal when a user presses the reset push button; and

a shutdown and reset manager for sensing said reset signal, said shutdown and reset manager being operable to initiate the orderly shutdown of the operating system in response to the reset signal and to complete the orderly shutdown when the storage system has closed the at least one temporary data file.

16. The system of claim 15 wherein said shutdown and reset manager generates a hardware reset in response to a second generation of the reset signal when the user presses the reset push button a second time, said hardware reset being operable to re-initialize the computing system.

17. The system of claim 15 further comprising:

a display device for displaying a shutdown status message.

18. The system of claim 15 wherein the (computing system comprises an) at least one embedded application (that) uses the storage system for memory resources, the embedded application being operable to shutdown when the shutdown and reset manager completes the orderly shutdown.

19. The system of claim 18 wherein the embedded application is stored in memory on a card connected to a bus system on the computing system, the card comprising an embedded processor for performing the embedded application.

20. The system of claim 19 wherein the card comprising the embedded application further includes the reset button.

21. The system of claim 20 wherein the card is mounted in the chassis and is located remote from the processing unit of the computing system.

22. A method for shutting down a computing system having an operating system, a connection to at least one embedded application, a storage system, and a chassis having a plurality of cards therein, the plurality of cards operable by the operating system, at least one of the plurality of cards being a management card for managing the operation of the chassis, the management card comprising a reset push button for generating a reset signal when a user presses the reset push button, the method comprising the steps or:

generating a reset signal in response to a user press of the reset push button;

receiving the reset signal;

initiating an orderly shutdown of the operating system in response to the reset signal by a method comprising the step of saving at least one open temporary file associated with the at least one embedded application; and

completing the shutdown of the operating system after the at least one open temporary file has been saved.

23. The method of claim 22 further comprising the steps of:

generating a second reset signal when the user presses the reset push button a second time;

waiting for the completing of the shutdown of the operating system; and

re-initializing the computing system in response to the second reset signal.

24. A system for shutting down a computing system comprising:

a general purpose computing platform comprising a processor and a storage system, the general purpose computing platform being operable to execute a plurality of general purpose applications stored in the storage system, said general purpose applications being operable to provide a user with computing functions during execution;

an operating system executing in the general purpose computing platform, the operating system operable to provide computing resources to the general-purpose applications, the storage system being operable to store a plurality of temporary data files and to close the temporary data files during an orderly shutdown of the operating system;

the general purpose computing platform being connected to a chassis comprising at least one embedded application card, the chassis being physically located in a remote location relative to the general purpose computing platform;

a reset button for generating a reset signal when a user presses the reset push button, the reset button being mounted in the at least one embedded application card; and

a shutdown and reset manager for sensing said reset signal, said shutdown and reset manager being operable to initiate the orderly shutdown of the operating system in response to the reset signal, to complete the orderly shutdown when the storage system has saved and closed the temporary data files and to generate a hardware reset when the user presses the reset push button a second time.

25. The system of claim 24 further comprising a display device for displaying a shutdown status message.

26. An improvement to a network access server for providing network communications control, the network access server comprising at least one telephone line interface connected to a computer network interface by a high-speed bus, an operating system operable to provide resources for embedded applications and general purpose computing, and a reset push button for generating a reset signal when a user presses the reset push button, the improvement comprising:

a shutdown and reset manager for sensing said reset signal, said shutdown and reset manager being operable to initiate the orderly shutdown of the operating system in response to the reset signal and to complete the orderly shutdown when the storage system has closed the temporary data files,

a chassis having a plurality of cards therein, at least one of said cards being a telephone line interface card, at least one of said cards being a gateway card for providing computer network access; and

a management card mounted in the chassis for managing the operation of the chassis, the management card comprising the reset push button.

27. The improvement of claim 26 wherein the shutdown and reset manager generates a hardware reset when the user presses the reset push button a second time.

28. The improvement of claim 26 further comprising a display device for displaying a shutdown status message.

29. The improvement of claim 26 wherein:

the management card includes a display device for displaying a shutdown message.

30. The improvement of claim 28 wherein the operating system is the WINDOWS operating system from Microsoft.

31. A system for shutting down an embedded system having a general purpose computing environment comprising:

a chassis having a plurality of cards therein, at least one of the plurality of cards being a telephone line interface card and at least one of the plurality of cards being a gateway card for providing computer network access;

a management card mounted in the chassis for managing operation of the chassis, the management card comprising a reset push button for generating a reset signal when a user presses the reset push button;

an operating system coupled to the chassis operable to provide resources for embedded applications and general purpose computing, to control access to a disk-storage system and to manage a plurality of temporary files stored in the disk-storage system, wherein at least one of the embedded applications controls operation of the plurality of cards; and

a shutdown and reset manager for sensing the reset signal, the shutdown and reset manager being operable to initiate an orderly shutdown of the operating system in response to the reset signal by saving the temporary files and synchronizing the disk-storage system, wherein the orderly shutdown of the operating system initiates an orderly shutdown of the embedded applications, thereby releasing control of the plurality of cards.

32. The system of claim 31 wherein:

the operating system is connected to a keyboard;

the chassis is located separate from the keyboard; and

the reset push button is located within the chassis thereby enabling the user to orderly shutdown the operating system by pushing the reset push button on the chassis.

33. The system of claim 31 wherein the shutdown and reset manager is a programmable logic device programmed to implement a state machine.

35. A system for shutting down a computing system comprising,

a general purpose computing platform comprising a processor and it storage system, the general purpose computing platform being operable to execute a plurality of general purpose applications stored in the storage system, the general purpose applications being operable to provide a user with computing functions during execution;

the general purpose computing platform being connected to at least one embedded application operable to perform real-time functions using at least one real-time operating system, the at least one embedded application using the storage system for memory resources,

an operating system to execute in the general purpose computing platform, the operating system operable to provide computing resources to the general-purpose applications, the storage system being operable to store at least one temporary data file associated with the at least one embedded application and to close the at least one temporary data file during an orderly shutdown of the operating system;

a chassis having a plurality of cards therein, the plurality of cards operable by the operating system, at least one of the plurality of cards being a management card for managing the operation of the chassis, the management card comprising a reset push button for generating a reset signal when a user presses the reset push button; and

a shutdown and reset manager for sensing the reset signal, the shutdown and reset manager being operable to initiate the orderly shutdown of the operating system in response to the reset signal and to complete the orderly shutdown when the storage system has closed the at least one temporary data file. the embedded application being operable to shutdown when the shutdown and reset manager completes the orderly shutdown.

36. The system of claim 35 wherein the shutdown and reset manager initiates z reset of the operating system in response a user press of the reset push button a second time.

37. A system for shutting down a computing system comprising:

a general purpose computing platform comprising a processor and a storage system, he general purpose computing platform being operable to execute a plurality of general purpose applications stored in the storage system said general purpose applications being operable to provide a user with computing functions during execution;

a chassis having a plurality of cards therein, the chassis connected to a bus system on the computing system, at least one of the cards being a management card for managing operation of the His, the management cud including at cast one embedded application operable to perform real-time functions using at least one real-time operating system and an embedded processor for performing the embedded application, the at least one embedded application using the storage system for memory resources;

the management card including the at least one embedded application includes t reset push button for generating a reset signal when the user presses the reset push button;

the general purpose computing platform being connected to the at least one embedded application;

an operating system to execute in the general purpose computing platform, the operating system operable to provide computing resources to the general-purpose applications, the storage system being operable to store at least one temporary data file associated with the at least one embedded application and to close the at least one temporary data file during an orderly shutdown of the operating system; and

a shutdown and reset manager for sensing the reset signal, the shutdown and reset manager being operable to initiate the orderly shutdown of the operating system in response to the reset signal and to complete the orderly shutdown when the storage system has closed the at least one temporary data file, the at least one embedded application being operable to shutdown when the shutdown and reset manager completes the orderly shutdown.

38. The system of claim 37 wherein the shutdown and reset manager initiates a reset of the operating system And the at least one embedded application in response a user press of the reset push button a second time.

39. A method for shutting down an embedded system having a general purpose operating environment and an operating system, the embedded system including a chassis having a plurality of cards therein, at least one of the cards being a telephone line interface card, at least One of the cards being a gateway card for providing computer network access and at least one of the cards being a management card for managing operation of the chassis, the management curd comprising a reset push button, the method comprising the steps of.:

generating a reset signal in response to a user press of the reset push button;

receiving the reset signal; and

orderly shutting down the operating system in response to the reset signal by saving any open temporary files, wherein the orderly shutdown of the operating system initiates an orderly shutdown of the embedded system, thereby shutting down the plurality of cards.

40. The method of claim 39 wherein:

the operating system is connected to a keyboard;

the chassis is located separate from the keyboard; and

the rest push button is located within the chassis thereby enabling the user to orderly shutdown the operating system by pushing the reset push button on the chassis.

41. The method of claim 39 further comprising generating a second reset signal in response to a user press of the reset push button a second time and resetting the operating system in response to receiving the second reset signal.

42. An improvement to a network access server for providing network communications control, the network access server comprising at least one telephone line interface connected to a computer network interface by a high-speed bus, an operating system operable to provide resources for embedded applications and general purpose computing, to control access to a disk-storage system and to manage a plurality of temporary files stored in the disk-storage system, the improvement comprising:

a chassis having a plurality of cards therein, the plurality of cards operable by the operating system, at least one of the plurality of cards being a telephone line interface card, at least one of the plurality of cards being a gateway card for providing computer network access and at least one of the plurality of cards being a management card for managing the operation of the chassis, the management card comprising a reset push button for generating a reset signal when a user presses the reset push button; and

a shutdown and reset manager for sensing the reset signal, the shutdown and reset manager initiating an orderly shutdown of the operating system in response to the reset signal, thereby initiating an orderly shut down of the plurality of cards,

wherein the orderly shutdown of the operating system includes saving the temporary files and synchronizing the disk-storage system.

43. The improvement of claim 42 wherein the shutdown and reset manager initiates a reset of the operating system and the plurality of cards in response a user press of the reset push button a second time.