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Documentation/mb/lenovo: Test shrunken ME on Ivy Bridge 

Update the Lenovo Ivy Bridge documentation that no issues could be
observed on W530.

Tested on Lenovo W530 with stripped ME and found no issues:
commit 93b0c7cfc6

* USB
* Bluetooth
* Wifi
* Wifi-kill switch
* libgfxinit
* SATA
* mSATA
* Audio
* SD-card
* Ethernet
* Keyboard
* Fn-Keys
* Display brightness
* ACPI S3 resume
* CPU temperature reporting
* Stress test stable (intel_pstate no_turbo due to W530 overheating bug)
  * Youtube videos
  * stress -c 8 -m 1 -t 3600

Change-Id: I46d23d41cc6ade5e641a6ddb3f357a6036002edc
Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39603
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Marcello Sylvester Bauer 2020-03-17 10:55:04 +01:00 committed by Patrick Georgi
parent c79e96b4eb
commit eff1306ea4
2 changed files with 17 additions and 2 deletions
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15
Documentation/mainboard/lenovo/Ivy_Bridge_series.md
View File

@ -76,3 +76,18 @@ region. The update is then written into the EC once.
[fl]: flashlayout_Ivy_Bridge.svg [fl]: flashlayout_Ivy_Bridge.svg
## Reducing Intel Managment Engine firmware size
It is possible to reduce the Intel ME firmware size to free additional
space for the `bios` region. This is usually referred to as *cleaning the ME* or
*stripping the ME*.
After reducing the Intel ME firmware size you must modify the original IFD,
[split the resulting coreboot ROM](#splitting-the-coreboot-rom) and then write
each ROM using an [external programmer].
Have a look at [me_cleaner] for more information.
Tests on Lenovo W530 showed no issues with a stripped and shrunken ME firmware.
[me_cleaner]: ../../northbridge/intel/sandybridge/me_cleaner.md
[external programmer]: ../../flash_tutorial/index.md

4
Documentation/mainboard/lenovo/Sandy_Bridge_series.md
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@ -47,11 +47,11 @@ region. The update is then written into the EC once.
## Reducing Intel Managment Engine firmware size ## Reducing Intel Managment Engine firmware size
It is possible to reduce the Intel ME firmware size to free additional It is possible to reduce the Intel ME firmware size to free additional
space for the `bios` region. This is usually refered to as *cleaning the ME* or space for the `bios` region. This is usually referred to as *cleaning the ME* or
*stripping the ME*. *stripping the ME*.
After reducing the Intel ME firmware size you must modify the original IFD After reducing the Intel ME firmware size you must modify the original IFD
and then write a full ROM using an [external programmer]. and then write a full ROM using an [external programmer].
Have a look at the [me_cleaner] for more information. Have a look at [me_cleaner] for more information.
Tests on Lenovo X220 showed no issues with a stripped ME firmware. Tests on Lenovo X220 showed no issues with a stripped ME firmware.