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Documentation: Add basic flashing tutorial for Lenovo * Add basic flashing tutorial ** Describe internal and external flashing ** Describe flash supply diode protection ** Gives general advices on flashing ** Describe how to use flashrom --ifd * Describe basic flashing on Lenovo T4xx devices ** Describe how to disassemble and access the flash IC on T4xx ** Describe flash layout on Sandy Bridge and Ivy Bridge series. Change-Id: Ia833e27f4e7d89ee32be9bed21a0c021839facec Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/27852 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-08-04 10:04:45 +02:00
# Lenovo Sandy Bridge series
## Flashing coreboot
```eval_rst
+---------------------+--------------------+
| Type | Value |
+=====================+====================+
| Socketed flash | no |
+---------------------+--------------------+
| Size | 8 MiB |
+---------------------+--------------------+
| In circuit flashing | Yes |
+---------------------+--------------------+
| Package | SOIC-8 |
+---------------------+--------------------+
| Write protection | No |
+---------------------+--------------------+
| Dual BIOS feature | No |
+---------------------+--------------------+
| Internal flashing | Yes |
+---------------------+--------------------+
```
## Installation instructions
* Update the EC firmware, as there's no support for EC updates in coreboot.
* Do **NOT** accidently swap pins or power on the board while a SPI flasher
is connected. It will destroy your device.
* It's recommended to only flash the BIOS region. In that case you don't
Documentation: Spell "blob" in lowercase It's not an acronym (outside of database software). Change-Id: I529561e4fc9889be7f9d6bd6d5f9a876e2007671 Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/28827 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Martin Roth <martinroth@google.com>
2018-09-30 21:18:33 +02:00
need to extract blobs from vendor firmware.
If you want to flash the whole chip, you need blobs when building
Documentation: Add basic flashing tutorial for Lenovo * Add basic flashing tutorial ** Describe internal and external flashing ** Describe flash supply diode protection ** Gives general advices on flashing ** Describe how to use flashrom --ifd * Describe basic flashing on Lenovo T4xx devices ** Describe how to disassemble and access the flash IC on T4xx ** Describe flash layout on Sandy Bridge and Ivy Bridge series. Change-Id: Ia833e27f4e7d89ee32be9bed21a0c021839facec Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/27852 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-08-04 10:04:45 +02:00
coreboot.
* The shipped *Flash layout* allocates 3MiB to the BIOS region, which is the space
usable by coreboot.
* ROM chip size should be set to 8MiB.
Documentation: Add tutorial for me_cleaner on Lenovo devices Add a tutorial how to use ME cleaner, and give some basic steps to strip the ME. Update the Lenovo Sandy Bridge documentation that no issues could be observed on X220 and give an example flash layout. Tested on Lenovo X220 with stripped ME and found no issues: commit: cbc5b99ac9e5856631109b1e7f20e80799beb1e4 * Displayport * VGA * USB * Bluetooth * Wifi * Wifi-kill switch * libgfxinit * SATA * Audio * SD-card * Ethernet * Keyboard * Fn-Keys * Display brightness * ACPI S3 resume * Battery events * CPU temperature reporting * FAN managment * Stress test stable * Youtube videos over Wifi * stress -c 2 -m 1 -d 1 * glxgears Change-Id: I0b1d04f00b5dbb38cf04333f2b345749b740a375 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39129 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-02-26 14:09:04 +01:00
Please also have a look at the [flashing tutorial]
Documentation: Add basic flashing tutorial for Lenovo * Add basic flashing tutorial ** Describe internal and external flashing ** Describe flash supply diode protection ** Gives general advices on flashing ** Describe how to use flashrom --ifd * Describe basic flashing on Lenovo T4xx devices ** Describe how to disassemble and access the flash IC on T4xx ** Describe flash layout on Sandy Bridge and Ivy Bridge series. Change-Id: Ia833e27f4e7d89ee32be9bed21a0c021839facec Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/27852 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-08-04 10:04:45 +02:00
## Flash layout
There's one 8MiB flash which contains IFD, GBE, ME and BIOS regions.
On Lenovo's UEFI the EC firmware update is placed at the start of the BIOS
region. The update is then written into the EC once.
![][fl]
Documentation: Remove confusing xyz0 naming convention for Lenovo devices Replace xx30 with Ivy_Bridge and xx20 with Sandy_Bridge. Also add a note that the Ivy_Bridge tutorial doesn't covert T430s and T431s. Change-Id: I0b65bca83195ec22cc139130e7cb6183c0972484 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/38929 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Peter Lemenkov <lemenkov@gmail.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2020-02-16 11:28:11 +01:00
[fl]: flashlayout_Sandy_Bridge.svg
Documentation: Add basic flashing tutorial for Lenovo * Add basic flashing tutorial ** Describe internal and external flashing ** Describe flash supply diode protection ** Gives general advices on flashing ** Describe how to use flashrom --ifd * Describe basic flashing on Lenovo T4xx devices ** Describe how to disassemble and access the flash IC on T4xx ** Describe flash layout on Sandy Bridge and Ivy Bridge series. Change-Id: Ia833e27f4e7d89ee32be9bed21a0c021839facec Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/27852 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-08-04 10:04:45 +02:00
Documentation: Add tutorial for me_cleaner on Lenovo devices Add a tutorial how to use ME cleaner, and give some basic steps to strip the ME. Update the Lenovo Sandy Bridge documentation that no issues could be observed on X220 and give an example flash layout. Tested on Lenovo X220 with stripped ME and found no issues: commit: cbc5b99ac9e5856631109b1e7f20e80799beb1e4 * Displayport * VGA * USB * Bluetooth * Wifi * Wifi-kill switch * libgfxinit * SATA * Audio * SD-card * Ethernet * Keyboard * Fn-Keys * Display brightness * ACPI S3 resume * Battery events * CPU temperature reporting * FAN managment * Stress test stable * Youtube videos over Wifi * stress -c 2 -m 1 -d 1 * glxgears Change-Id: I0b1d04f00b5dbb38cf04333f2b345749b740a375 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39129 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-02-26 14:09:04 +01:00
## 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 refered to as *cleaning the ME* or
*stripping the ME*.
After reducing the Intel ME firmware size you must modify the original IFD
and then write a full ROM using an [external programmer].
Have a look at the [me_cleaner] for more information.
Tests on Lenovo X220 showed no issues with a stripped ME firmware.
**Modified flash layout:**
![][fl2]
[fl2]: flashlayout_Sandy_Bridge_stripped_me.svg
The overall size of the `gbe`, `me,` `ifd` region is less than 128KiB, leaving
the remaining space for the `bios` partition.
[me_cleaner]: ../../northbridge/intel/sandybridge/me_cleaner.md
[external programmer]: ../../flash_tutorial/index.md