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2018-12-19Documentation/mainboard/lenovo/t420.md: fix typoMichael Bacarella
Picture of mainboard wasn't displaying. Signed-off-by: Michael Bacarella <michael.bacarella@gmail.com> Change-Id: Ia70f5d5ad2fdf4c0e811ab92a817375a89694122 Reviewed-on: https://review.coreboot.org/c/30170 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2018-12-05Documentation/mainboard/lenovo/t420.md: add pic of chipMichael Bacarella
Provide pic of the flash IC with pinouts labeled, as well as additional text about the chip. Signed-off-by: Michael Bacarella <michael.bacarella@gmail.com> Change-Id: I9046fa63dcd4d192836417efac68ca7587ac1c91 Signed-off-by: Michael Bacarella <michael.bacarella@gmail.com> Reviewed-on: https://review.coreboot.org/c/30027 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2018-09-30Documentation: Add basic flashing tutorial for LenovoPatrick Rudolph
* 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>