From b461865577ed57b4512c75e0becf44b6b7ed0922 Mon Sep 17 00:00:00 2001 From: Patrick Rudolph Date: Mon, 20 May 2019 16:28:49 +0200 Subject: Documentation: Add Rotundu Add information about flash and programming header. Change-Id: If34016e20dd580f92695bef5b67dd0c282b0b421 Signed-off-by: Patrick Rudolph Reviewed-on: https://review.coreboot.org/c/coreboot/+/32894 Tested-by: build bot (Jenkins) Reviewed-by: Philipp Deppenwiese --- Documentation/mainboard/opencellular/rotundu.md | 76 +++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 Documentation/mainboard/opencellular/rotundu.md (limited to 'Documentation/mainboard/opencellular/rotundu.md') diff --git a/Documentation/mainboard/opencellular/rotundu.md b/Documentation/mainboard/opencellular/rotundu.md new file mode 100644 index 0000000000..8773e960a3 --- /dev/null +++ b/Documentation/mainboard/opencellular/rotundu.md @@ -0,0 +1,76 @@ +# 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 -- cgit v1.2.3