# US 2014/0195854 A1 · System and Method to Remotely Recover from a System Halt During System Initialization

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- Number: US 2014/0195854 A1
- Document ID: US20140195854A1
- Status: Published application
- Kind: A1
- Application number: 13/737,359
- Filed: 2013-01-09
- Published: 2014-07-10
- Earliest claimed: 2013-01-09
- Assignees: Dell Products L.P.
- Applicants: Dell Products, LP
- Inventors: Sanjeev Singh; Akkiah Choudary Maddukuri
- Web page: https://patentgrep.com/patent/US20140195854A1

## CPC

- G06F 11/2284: {by power-on test, e.g. power-on self test [POST]}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

An information handling system includes a memory, a processor, and a management controller. The memory includes code to implement a power on self test (POST). The management controller operates to receive an indication that the POST has halted execution in response to a POST error, to log the indication and the POST error, and to send an input to the POST. The POST operates to receive the input and to continue execution based upon the input.

## Claims

### Claim 1

An information handling system comprising:
a memory including code to implement a power on self test (POST);
a processor operable to execute the POST; and
a management controller operable to:
receive a first indication that the POST has halted execution in response to a POST error;
log the first indication and the POST error; and
send an input to the POST;
wherein the POST is operable to receive the input and to continue execution based upon the input.

### Claim 2 (depends on 1)

The information handling system of claim 1, wherein, in sending the input to the POST, the management controller is further operable to:
write a second indication to a memory of the information handling system; and
provide a system management interrupt to the processor, the system management interrupt invoking an interrupt handler that reads the second indication from the memory.

### Claim 3 (depends on 1)

The information handling system of claim 1, wherein the management controller is further operable to:
send the input to the POST based upon configuration information included in the management controller.

### Claim 4 (depends on 3)

The information handling system of claim 3, wherein the configuration information includes an association between the POST error and the input.

### Claim 5 (depends on 1)

The information handling system of claim 1, wherein the management controller is further operable to:
send a second indication to a management system;
receive the input from the management system in response to sending the second indication; and
send the input to the POST in response to receiving the input from the management system.

### Claim 6 (depends on 5)

The information handling system of claim 5, wherein the input is provided at the management system based upon an action of a system administrator.

### Claim 7 (depends on 5)

The information handling system of claim 5, wherein the input is provided at the management system based upon configuration information included in the management system.

### Claim 8

A method comprising:
executing, at an information handling system including a processor, a power on self test (POST);
identifying by the POST a POST error;
sending by the POST a first indication of the POST error and a second indication that the POST has halted, wherein the first and second indications are sent to a management controller of the information handling system;
logging by the management controller the first and second indications;
sending an input to the POST;
receiving the input at the POST; and
continuing execution of the POST in response to receiving the input.

### Claim 9 (depends on 8)

The method of claim 8, wherein, in sending the input to the POST, the method further comprises:
writing, by the management controller, a third indication to a memory of the information handling system; and
providing a system management interrupt to a processor of the information handling system, the system management interrupt invoking an interrupt handler that reads the third indication from the memory.

### Claim 10 (depends on 8)

The method of claim 8, wherein sending the input to the POST is based upon configuration information included in the management controller.

### Claim 11 (depends on 10)

The method of claim 10, wherein the configuration information includes an association between the POST error and the input.

### Claim 12 (depends on 8)

The method of claim 8, further comprising:
sending a third indication to a management system;
receiving the input from the management system in response to sending the third indication; and
sending the input to the POST in response to receiving the input from the management system.

### Claim 13 (depends on 12)

The method of claim 12, wherein the input is provided at the management system based upon an action of a system administrator.

### Claim 14 (depends on 12)

The method of claim 12, wherein the input is provided at the management system based upon configuration information included in the management system.

### Claim 15

A non-transitory computer-readable medium including code for implementing a method, the method comprising:
executing a power on self test (POST);
identifying by the POST a POST error;
sending by the POST a first indication of the POST error and a second indication that the POST has halted, wherein the first and second indications are sent to a management controller;
logging by the management controller the first and second indications;
sending an input to the POST;
receiving the input at the POST; and
continuing execution of the POST in response to receiving the input.

### Claim 16 (depends on 15)

The computer-readable medium of claim 15, wherein, in sending the input to the POST, the method further comprises:
writing, by the management controller, a third indication to a memory; and
providing a system management interrupt, the system management interrupt invoking an interrupt handler that reads the third indication from the memory.

### Claim 17 (depends on 15)

The computer-readable medium of claim 15, wherein sending the input to the POST is based upon configuration information included in the management controller.

### Claim 18 (depends on 17)

The computer-readable medium handling system of claim 17, wherein the configuration information includes an association between the POST error and the input.

### Claim 19 (depends on 15)

The computer-readable medium of claim 15, the method further comprising:
sending a third indication to a management system;
receiving the input from the management system in response to sending the third indication; and
sending the input to the POST in response to receiving the input from the management system.

### Claim 20 (depends on 19)

The computer-readable medium of claim 19, wherein the input is provided at the management system based upon an action of a system administrator.