System and method for system surveillance using firmware progress code

• US 20030172320A1
• Filed: 03/07/2002
• Published: 09/11/2003
• Est. Priority Date: 03/07/2002
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Mehta, Chetan, Randall, David Lee, Patel, Jayeshkumar M., Patel, Manesh
• Granted Patent: US 6,968,477 B2
• Time in Patent Office: Days
• US Class Current: 714/31
• CPC Class Codes: G06F 11/2284 by power-on test, e.g. power-on self test [POST]
• CPC Class Codes: G06F 11/2736 using a dedicated service processor for test

Abstract

A system and method for monitoring a host computer using a service processor is provided. A shared nonvolatile random access memory (NVRAM) area is used to store progress information from the host computer system. The host computer system writes progress information corresponding to the initialization step being performed to the shared NVRAM and also updates a host pointer in the NVRAM. The service processor reads the shared NVRAM and compares its pointer with the host pointer to determine whether new host initialization activity has been reported. The service processor sets a timer so that if host activity is not reported during a set amount of time an error condition occurs causing the service processor to handle the host computer error. An optional service processor routine determines whether the host computer is stuck in an initialization loop whereupon the service processor once again handles the host computer error.

Claims

1. A method for monitoring host computer initialization, said method comprising:

initializing a timer within a service processor;

reading a shared storage area from the service processor, wherein the shared storage area is accessible by a host computer and the service processor;

determining whether updated progress data is included in the shared storage area based on the reading; and

performing host error processing by the service processor in response to determining that no updated progress data is included in the shared storage area and that the timer has expired.

2. The method as described in claim 1 wherein the determining further comprises:

reading a host pointer from the shared storage area, the host pointer corresponding to a location in the stored storage area last used to write progress data by the host; and

comparing the host pointer with a service processor pointer, the service processor pointer corresponding to a second location in the storage area last used to retrieve progress data from the shared storage area by the service processor.

3. The method as described in claim 1 wherein the shared storage area is selected from the group consisting of a shared nonvolatile random memory access area, a shared nonvolatile storage area, and a shared random access memory area.

4. The method as described in claim 1 further comprising:

reading the updated progress data in response to determining that the updated progress data is included in the shared storage area; and

displaying the updated progress data on a display device.

5. The method as described in claim 4 further comprising:

comparing the updated progress data to previously read progress data;

incrementing a repeat counter in response to the determining that the updated progress data is the same as the previously read progress data; and

performing host error processing by the service processor in response to determining that the incremented repeat counter exceeds a loop limit.

6. The method as described in claim 1 wherein the progress data includes a progress code and a physical location code.

7. The method as described in claim 1 wherein the shared storage area includes:

a buffer area used to store progress data; and

a header area, the header area including;

a host pointer corresponding to a last written progress data stored in the shared storage area by the host;

a service processor pointer corresponding to a last retrieved progress data read from the shared storage area by the service processor; and

a buffer length indicating the length of the buffer area.

8. An information handling system comprising:

one or more host processors;

a service processor;

a shared memory accessible by the host processors and the service processor;

an surveillance tool for monitoring initialization of the information handling system, the surveillance tool including;

means for initializing a timer within the service processor;

means for reading the shared memory from the service processor, wherein the shared memory is accessible by a host computer and the service processor;

means for determining whether updated progress data is included in the shared memory based on the reading; and

means for performing host error processing by the service processor in response to determining that no updated progress data is included in the shared memory and that the timer has expired.

9. The information handling system as described in claim 8 wherein the means for determining further comprises:

means for reading a host pointer from the shared memory, the host pointer corresponding to a location in the stored storage area last used to write progress data by the host; and

means for comparing the host pointer with a service processor pointer, the service processor pointer corresponding to a second location in the storage area last used to retrieve progress data from the shared memory by the service processor.

10. The information handling system as described in claim 8 wherein the shared memory is selected from the group consisting of a shared nonvolatile random memory access area, a shared nonvolatile storage area, and a shared random access memory area.

11. The information handling system as described in claim 8 further comprising:

means for reading the updated progress data in response to determining that the updated progress data is included in the shared memory; and

means for displaying the updated progress data on a display device.

12. The information handling system as described in claim 11 further comprising:

means for comparing the updated progress data to previously read progress data;

means for incrementing a repeat counter in response to the determining that the updated progress data is the same as the previously read progress data; and

means for performing host error processing by the service processor in response to determining that the incremented repeat counter exceeds a loop limit.

13. The information handling system as described in claim 8 wherein the progress data includes a progress code and a physical location code.

14. The information handling system as described in claim 8 wherein the shared memory includes:

a buffer area used to store progress data; and

a header area, the header area including;

a host pointer corresponding to a last written progress data stored in the shared memory by the host;

a service processor pointer corresponding to a last retrieved progress data read from the shared memory by the service processor; and

a buffer length indicating the length of the buffer area.

15. A computer program product stored in a computer operable media for monitoring host computer initialization, said computer program product comprising:

means for initializing a timer within a service processor;

means for reading a shared storage area from the service processor, wherein the shared storage area is accessible by a host computer and the service processor;

means for determining whether updated progress data is included in the shared storage area based on the reading; and

means for performing host error processing by the service processor in response to determining that no updated progress data is included in the shared storage area and that the timer has expired.

16. The computer program product as described in claim 15 wherein the means for determining further comprises:

means for reading a host pointer from the shared storage area, the host pointer corresponding to a location in the stored storage area last used to write progress data by the host; and

means for comparing the host pointer with a service processor pointer, the service processor pointer corresponding to a second location in the storage area last used to retrieve progress data from the shared storage area by the service processor.

17. The computer program product as described in claim 15 wherein the shared storage area is selected from the group consisting of a shared nonvolatile random memory access area, a shared nonvolatile storage area, and a shared random access memory area.

18. The computer program product as described in claim 15 further comprising:

means for reading the updated progress data in response to determining that the updated progress data is included in the shared storage area; and

means for displaying the updated progress data on a display device.

19. The computer program product as described in claim 18 further comprising:

means for comparing the updated progress data to previously read progress data;

means for incrementing a repeat counter in response to the determining that the updated progress data is the same as the previously read progress data; and

means for performing host error processing by the service processor in response to determining that the incremented repeat counter exceeds a loop limit.

20. The computer program product as described in claim 15 wherein the shared storage area includes:

a buffer area used to store progress data; and

a header area, the header area including;

a host pointer corresponding to a last written progress data stored in the shared storage area by the host;

a service processor pointer corresponding to a last retrieved progress data read from the shared storage area by the service processor; and

a buffer length indicating the length of the buffer area.