flash_netboot¶
Source code: flash_netboot.py
Flash system main (AP) firmware to netboot firmware.
Description¶
Sometimes in order to re-run factory flow, or to update partitions that can’t be updated by Chrome OS Factory Software (for example, the disk partition itself, or release and test image rootfs), we may want to flash system firmware and restart the process.
The flash_netboot test provides an easy way to flash netboot firmware into system using flashrom utility, and preserving VPD sections.
Note that it doesn’t reboot after flashing firmware. Please run reboot step after it.
Test Procedure¶
This is an automated test without user interaction.
Start the test and it will reflash system firmware using specified image.
Dependency¶
Utility flashrom (https://www.flashrom.org/).
System firmware is structured with FMAP.
Chrome OS Verified Boot firmware utility ‘futility’.
Examples¶
To flash netboot firmware in provided default location, add this in test list:
{
"pytest_name": "flash_netboot"
}
To flash netboot firmware from a special location:
{
"pytest_name": "flash_netboot",
"args": {
"image": "/usr/local/factory/3rdparty/netboot.bin"
}
}
Test Arguments¶
Name |
Type |
Description |
|---|---|---|
image |
str, None |
(optional; default: |