Documentation: Add Rotundu

Add information about flash and programming header.

Change-Id: If34016e20dd580f92695bef5b67dd0c282b0b421
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32894
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
This commit is contained in:
Patrick Rudolph 2019-05-20 16:28:49 +02:00 committed by Philipp Deppenwiese
parent b19de28c98
commit b461865577
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@ -44,6 +44,7 @@ The boards in this section are not real mainboards, but emulators.
## Open Cellular ## Open Cellular
- [Elgon](opencellular/elgon.md) - [Elgon](opencellular/elgon.md)
- [Rotundu](opencellular/rotundu.md)
## HP ## HP

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# Rutundu
This page describes how to run coreboot on the [Rotundu] compute board
from [OpenCellular].
## TODO
* Configure UART
* EC interface
## 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 GBCv1 board does have a pinheader to flash the SOIC-8 in circuit.
Directly connecting a Pomona test-clip on the flash is also possible.
**Closeup view of SOIC-8 flash IC**
![][rotundu_flash]
[rotundu_flash]: rotundu_flash.jpg
**SPI header**
![][rotundu_header2]
[rotundu_header2]: rotundu_header2.jpg
**SPI header pinout**
Dediprog compatible pinout.
![][rotundu_j16]
[rotundu_j16]: rotundu_j16.png
## Technology
```eval_rst
+------------------+--------------------------------------------------+
| SoC | Intel Baytrail |
+------------------+--------------------------------------------------+
| Coprocessor | Intel ME |
+------------------+--------------------------------------------------+
```
[Rotundu]: https://github.com/Telecominfraproject/OpenCellular
[OpenCellular]: https://code.fb.com/connectivity/introducing-opencellular-an-open-source-wireless-access-platform/
[flashrom]: https://flashrom.org/Flashrom

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