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diff --git a/Documentation/mainboard/cavium/cn8100_sff_evb.md b/Documentation/mainboard/cavium/cn8100_sff_evb.md new file mode 100644 index 0000000000..b16a8ae19b --- /dev/null +++ b/Documentation/mainboard/cavium/cn8100_sff_evb.md @@ -0,0 +1,76 @@ +# CN81xx Evaluation-board SFF + +## Specs + +* 3 mini PCIe slots +* 4 SATA ports +* one USB3.0 A connector +* 20Pin JTAG +* 4 Gigabit Ethernet +* 2 SFP+ connectors +* PCIe x4 slot +* UART over USB +* eMMC Flash or MicroSD card slot for on-board storage +* 1 Slot with DDR-4 memory with ECC support +* SPI flash +* MMC and uSD-card + +## Flashing coreboot + +```eval_rst ++---------------------+----------------+ +| Type | Value | ++=====================+================+ +| Socketed flash | no | ++---------------------+----------------+ +| Model | Micron 25Q128A | ++---------------------+----------------+ +| Size | 8 MiB | ++---------------------+----------------+ +| In circuit flashing | no | ++---------------------+----------------+ +| Package | SOIC-8 | ++---------------------+----------------+ +| Write protection | No | ++---------------------+----------------+ +| Dual BIOS feature | No | ++---------------------+----------------+ +| Internal flashing | ? | ++---------------------+----------------+ +``` + +## Notes about the hardware + +1. Cavium connected *GPIO10* to a global reset line. + It's unclear which chips are connected, but at least the PHY and SATA chips + are connected. + +2. The 4 QLMs can be configured using DIP switches (SW1). That means only a + subset of of the available connectors is working at time. + +3. The boot source can be configure using DIP switches (SW1). + +4. The core and system clock frequency can be configured using DIP switches + (SW3 / SW2). + +5. The JTAG follows Cavium's own protocol. Support for it is missing in + OpenOCD. You have to use ARMs official hardware and software. + +## 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 + +``` + +## Picture + +![][cn81xx_board] + +[cn81xx_board]: cavium_cn81xx_sff_evb.jpg |