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coreboot-kgpe-d16/Documentation/mainboard/opencellular/elgon.md

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mainboard/opencellular/elgon: Add mainboard support Tested on Elgon EVT board and boots into GNU/Linux. TODO: * Add hard reset function for VBOOT. * Add EC code * Add SPI flash write protection Change-Id: I9b809306cc48facbade5dc63846c4532b397e0b5 Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/28024 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-08-11 01:15:14 +02:00
# Elgon
This page describes how to run coreboot on the [Elgon] compute board
from [OpenCellular].
## TODO
* Add hard reset control
## Flashing coreboot
```eval_rst
+---------------------+------------+
| Type | Value |
+=====================+============+
| Socketed flash | no |
+---------------------+------------+
| Model | W25Q128 |
+---------------------+------------+
| Size | 16 MiB |
+---------------------+------------+
| In circuit flashing | yes |
+---------------------+------------+
| Package | SOIC-8 |
+---------------------+------------+
| Write protection | No |
+---------------------+------------+
| Dual BIOS feature | No |
+---------------------+------------+
| Internal flashing | yes |
+---------------------+------------+
```
### Internal programming
The SPI flash can be accessed using [flashrom].
### External programming
The EVT board does have a pinheader to flash the SOIC-8 in circuit.
Directly connecting a Pomona test-clip on the flash is also possible.
**Total board view of EVT**
![][elgon1]
Documentation: Improve elgon documentation * Convert PNG to JPG and reduce image quality. * Mark flash IC and USB serial connector. * Mark SPI programming header. * Add programming header pinout. Change-Id: Ica5958545ed23573a0d48dfa422ad1a822d06b47 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/28966 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-10-08 09:44:19 +02:00
[elgon1]: elgon1.jpg
mainboard/opencellular/elgon: Add mainboard support Tested on Elgon EVT board and boots into GNU/Linux. TODO: * Add hard reset function for VBOOT. * Add EC code * Add SPI flash write protection Change-Id: I9b809306cc48facbade5dc63846c4532b397e0b5 Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/28024 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-08-11 01:15:14 +02:00
Documentation: Improve elgon documentation * Convert PNG to JPG and reduce image quality. * Mark flash IC and USB serial connector. * Mark SPI programming header. * Add programming header pinout. Change-Id: Ica5958545ed23573a0d48dfa422ad1a822d06b47 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/28966 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-10-08 09:44:19 +02:00
**Closeup view of SOIC-8 flash IC and USB serial connector of EVT (marked blue)**
mainboard/opencellular/elgon: Add mainboard support Tested on Elgon EVT board and boots into GNU/Linux. TODO: * Add hard reset function for VBOOT. * Add EC code * Add SPI flash write protection Change-Id: I9b809306cc48facbade5dc63846c4532b397e0b5 Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/28024 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-08-11 01:15:14 +02:00
![][elgon2]
Documentation: Improve elgon documentation * Convert PNG to JPG and reduce image quality. * Mark flash IC and USB serial connector. * Mark SPI programming header. * Add programming header pinout. Change-Id: Ica5958545ed23573a0d48dfa422ad1a822d06b47 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/28966 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-10-08 09:44:19 +02:00
[elgon2]: elgon2.jpg
**SPI header (marked blue)**
![][elgon_conn_j9_pcb]
[elgon_conn_j9_pcb]: elgon_conn_j9_pcb.jpg
**SPI header pinout**
Dediprog compatible pinout.
![][elgon_conn_j9]
[elgon_conn_j9]: elgon_conn_j9.png
mainboard/opencellular/elgon: Add mainboard support Tested on Elgon EVT board and boots into GNU/Linux. TODO: * Add hard reset function for VBOOT. * Add EC code * Add SPI flash write protection Change-Id: I9b809306cc48facbade5dc63846c4532b397e0b5 Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org> Reviewed-on: https://review.coreboot.org/28024 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2018-08-11 01:15:14 +02:00
## Technology
```eval_rst
+---------------+----------------------------------------+
| SoC | :doc:`../../soc/cavium/cn81xx/index` |
+---------------+----------------------------------------+
| CPU | Cavium ARMv8-Quadcore `CN81XX`_ |
+---------------+----------------------------------------+
.. _CN81XX: https://www.cavium.com/product-octeon-tx-cn80xx-81xx.html
```
[Elgon]: https://github.com/Telecominfraproject/OpenCellular
[OpenCellular]: https://code.fb.com/connectivity/introducing-opencellular-an-open-source-wireless-access-platform/
[flashrom]: https://flashrom.org/Flashrom