PPC12-427/BIOS Functionality
v1.0
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Page 35
This section describes the process for updating the PPC12-427 Embedded
Controller (EC) image using the built-in UEFI shell.
8.3.2 Process
1. Insert a USB flash drive containing the EC update program into a USB
socket on the PPC12-427 platform.
2. Turn on the PPC12-427 and press the
ESC
or
DEL
key during the boot
process, which starts the BIOS setup utility.
3. In the BIOS setup utility, use the cursor keys to highlight the
Save &
Exit
menu option.
4. Use the cursor keys to select
UEFI: Built-In EFI Shell
from the list of
boot devices displayed under the
Boot Override
section.
5. Press
Enter
.
The PPC12-427 executes the built-in UEFI shell, and displays a list of
attached storage devices. The USB flash drive shows up in the list;
depending on other boot devices attached, it may be listed as
fs0
,
fs1
,
etc.
6. From the UEFI shell command prompt, enter the following command
where
N
is the number of the fs device representing the USB flash
drive:
fsN:
Example:
fs1:
The shell prompt changes to indicate that device fsN is now the active
storage device, e.g.,
fs1:
7. Execute the following command:
ls
The output of the
ls
command is similar to the display listing available
with the Linux or MS-DOS list directory command. If the correct
storage device was selected in step 6 above, the
ls
command should
show the EC update program in the directory listing obtained with the
ls command.
8. Assuming the EC update program is named
Update.efi
, enter the
following command at the shell command prompt:
Update.efi
The EC update program begins executing.
9. When the update program completes, power cycle the platform to
force the new EC image to load and execute.
10. Verify that the EC update was successful by comparing the displayed
EC version in the BIOS with the version specified in the EC update
notification.
