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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 Ivy Bridge series
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
This information is valid for all supported models, except T430s and T431s.
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
## Flashing coreboot
```eval_rst
+---------------------+--------------------------------+
| Type | Value |
+=====================+================================+
| Socketed flash | no |
+---------------------+--------------------------------+
| Size | 8 MiB + 4MiB |
+---------------------+--------------------------------+
| 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 permanently brick 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 *Flash layout* shows that by default 7MiB of space are available for
the use with coreboot.
* In that case you only want to use a part of the BIOS region that must not
exceed 4MiB in size, which means CONFIG_CBFS_SIZE must be smaller than 4MiB.
* ROM chip size should be set to 12MiB.
```eval_rst
Please also have a look at :doc:`../../flash_tutorial/index`.
```
## Splitting the coreboot.rom
To split the coreboot.rom into two images (one for the 8MiB and one for the
4 MiB flash IC), run the following commands:
```bash
dd of=top.rom bs=1M if=build/coreboot.rom skip=8
dd of=bottom.rom bs=1M if=build/coreboot.rom count=8
```
That gives one ROM for each flash IC, where *top.rom* is the upper part of the
flash image, that resides on the 4 MiB flash and *bottom.rom* is the lower part
of the flash image, that resides on the 8 MiB flash.
## Dumping a full ROM
If you flash externally you need to read both flash chips to get two images
(one for the 8MiB and one for the 4 MiB flash IC), and then run the following
command to concatenate the files:
```bash
cat bottom.rom top.rom > firmware.rom
```
## Flash layout
There's one 8MiB and one 4 MiB flash which contains IFD, GBE, ME and
BIOS region. These two flash ICs appear as a single 12MiB when flashing
internally.
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_Ivy_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/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 93b0c7cfc632e7b57f1f4915886bf53397a12f25 * 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>
2020-03-17 10:55:04 +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 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