Syntax

baud <index> <baudrate>

Parameters

<index> 0 through the total number of UARTS minus one

<baudrate>

baud rate.

Operation

Use this command to change the speed for a UART in the system. This command works for all UARTs visible to EFI/POSSE. If the UART is part of processor dependent hardware (PDH) space and is initialized by the core firmware, this command communicates the settings to core firmware so the UART can be initialized with the new settings on the next boot.

System default is 9600 baud.

Other communication parameters are listed in Table D-2.Table D-2 Communications Parameters

Parameter

Value

 

 

RECEIVE_FIFO_DEPTH

1

 

 

TIMEOUT

1000000

 

 

PARITY

No parity

 

 

DATA_BITS

8

 

 

STOP_BITS

1

 

 

CONTROL_MASK

0

 

 

boottest

Interacts with the speedy boot variable enabling it to be set appropriately.

Syntax

boottest

Displays

status of

all speedy boot

bits

boottest on

Run all

tests (for

a normal

boot

time)

boottest off

Skip

all

tests

(for a faster boot time)

boottest [test]

Displays

status of

specific

Speedy

Boot bit

boottest [test] [on off]

Sets

or

clears

a specific Speedy

Boot bit

Parameters

[test] Each test can be set or cleared:

booting_valid

Enable/disable system firmware response to BOOTING

 

bit. If OS Speedy Boot aware set to on.

early_cpu

Enable/disable early CPU selftests.

late_cpu

Enable/disable late CPU selftests.

platform

Enable/disable system board hardware tests.

chipset

Enable/disable CEC tests.

io_hw

Enable/disable EFI driver Core I/O tests.

mem_init

Enable/disable memory initialization.

mem_test

Enable/disable full destructive memory tests.

EFI/POSSE Commands 323