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tool: Add error for write locked

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Add a new error for the case of trying to flash when security is enabled
and it is still locked and update the related docs.

Signed-off-by: Tim Crawford <tcrawford@system76.com>
This commit is contained in:
Tim Crawford
2024-03-22 14:48:56 -06:00
committed by Tim Crawford
parent 54d795480c
commit 70c8678a5f
6 changed files with 26 additions and 12 deletions
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20
docs/flashing.md
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@ -1,15 +1,27 @@
# Flashing firmware
## UEFI application
The `flash.sh` script from the top-level firmware-open project will use
firmware-update, the UEFI application which is used for normal system updates.
This will flash both the SBIOS and the EC after building the firmware. To
flash just the EC, delete the built `firmware.rom` before running `flash.sh`.
## Internal programmer
Use this method for flashing a system already running System76 EC.
This method will only work if the running firmware is not locked. Firmware is
write locked if it was built with `CONFIG_SECURITY=y`. firmware-update must be
used to flash from UEFI in this state (see `flash.sh` in firmware-open).
write locked if it was built with `CONFIG_SECURITY=y`. The firmware can be
unlocked using ectool for a single boot:
This will trigger a watchdog reset causing the system to **immediately power
off**. OS data may be lost or corrupted as a result. Save and close all
```
./scripts/ectool.sh security unlock
```
This method will trigger a watchdog reset causing the system to **immediately
power off**. OS data may be lost or corrupted as a result. Save and close all
applications before flashing.
```