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C H A P T E R  7
Using OpenBoot PROM

Some features in the OpenBoot PROM support ALOM. To use these features, type a command at the ok prompt. This chapter contains information on the following headings:

Switching between the ALOM Command Shell and the OpenBoot PROM Prompt

If the Solaris Operating System is running on the host server, type the following commands at the sc> prompt: 

sc> break 

Are you sure you want to send a break to the system [y/n]? y 

sc> console 

ok

If the host server is already at the OpenBoot PROM prompt (ok), type the following command at the sc> prompt: 

sc> console 

ok

To switch from the OpenBoot PROM prompt to the ALOM command shell, type the following command at the ok prompt: 

ok #. 

sc>


Note - #. (pound-period) is the default escape character sequence to switch to the ALOM command prompt. To change the escape character sequence, use the sc_escapechars variable. See sc_escapechars.


To return to the Solaris Operating System from the ok prompt, type the following command: 

ok go

The reset-sc Command

Use the reset-sc command to reset ALOM from the OpenBoot PROM prompt (ok).

To use the command, type reset-sc at the ok prompt.

For example: 

ok reset-sc

The .sc Command

Use the .sc command to probe ALOM and to obtain its status from the OpenBoot PROM (ok) prompt.

To use the command, follow these steps:

1. At the sc> prompt in ALOM, type the following command: 

sc> break -y

2. At the ok prompt in OpenBoot PROM, type the following command: 

ok setenv auto-boot? false

3. At the ok prompt, type the following command: 

ok reset-all

4. At the ok prompt, type the following command: 

ok .sc

For example:

CODE EXAMPLE 7-1 Example of the .sc Command Output 
ok .sc 

SEEPROM: OK 

I2C: OK 

Ethernet: OK 

Ethernet (2): OK

CPU: OK 

RAM: OK 

Console: OK 

SC Control line: OK 

FlashRAM Boot CRC: OK 

FlashRAM Main CRC: OK

 

 



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