Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/57561 )
Change subject: Documentation: Add OCP Mono Lake mainboard ......................................................................
Documentation: Add OCP Mono Lake mainboard
Add information about the OCP Mono Lake mainboard.
Change-Id: I2109cca0e4037a2945bcb7e4d80897b48ada54af Signed-off-by: Marc Jones marcjones@sysproconsutling.com Reviewed-on: https://review.coreboot.org/c/coreboot/+/57561 Reviewed-by: Stefan Reinauer stefan.reinauer@coreboot.org Reviewed-by: Jay Talbott JayTalbott@sysproconsulting.com Tested-by: Stefan Reinauer stefan.reinauer@coreboot.org Tested-by: build bot (Jenkins) no-reply@coreboot.org --- M Documentation/mainboard/index.md A Documentation/mainboard/ocp/monolake.md 2 files changed, 150 insertions(+), 0 deletions(-)
Approvals: build bot (Jenkins): Verified Stefan Reinauer: Verified; Looks good to me, approved Jay Talbott: Looks good to me, but someone else must approve
diff --git a/Documentation/mainboard/index.md b/Documentation/mainboard/index.md index 60302cb..39cd9a4 100644 --- a/Documentation/mainboard/index.md +++ b/Documentation/mainboard/index.md @@ -99,6 +99,10 @@
- [MS-7707](msi/ms7707/ms7707.md)
+## OCP + +- [Mono Lake](ocp/monolake.md) + ## Open Cellular
- [Elgon](opencellular/elgon.md) diff --git a/Documentation/mainboard/ocp/monolake.md b/Documentation/mainboard/ocp/monolake.md new file mode 100644 index 0000000..e825bff --- /dev/null +++ b/Documentation/mainboard/ocp/monolake.md @@ -0,0 +1,146 @@ +# OCP Mono Lake + +This page describes coreboot support status for the [OCP] (Open Compute Project) +Mono Lake server platform. + +## Introduction + +OCP Mono Lake server platform is a component of multi-host server Yosemite-V1. +Facebook [introduced Yosemite] in 2015 and the [Mono Lake was accepted] to OCP in 2019. + +Mono Lake server is a single socket BroadwellDE server. + +Yosemite-V1 may host up to 4 Mono Lake servers (blades) in one sled. + +The Yosemite-V1 system is in mass production. Facebook, Intel, ITRenew and partners +jointly develop Open System Firmware (OSF) solution on Mono Lake as an alternative +solution. The OSF solution is based on coreboot/FSP/LinuxBoot stack. A firmware binary +is available from ITRenew. + +coreboot Mono Lake is supported on the coreboot version 4.11 branch. +The Broadwell-DE FSP v1.0 support was dropped after 4.11. + + +## Required blobs + +Mono Lake server OSF solution requires: +- [FSP] blob: SysPro custom FSP is required to support the 16-core Broadwell-DE on Mono Lake +- Microcode: Available through github.com:otcshare/Intel-Generic-Microcode.git +- ME binary: Available under NDA with Intel + +## Payload +- LinuxBoot: Linuxboot is the prefered coreboot payload for Mono Lake. + It can be built following [All about u-root]. + + Tested configuration: + Linux Kernel v5.10.44 + [u-root Mono Lake pull request] + u-root build command: + GO111MODULE=off u-root -build=bb -uinitcmd=systemboot \ + -files="${FLASHROMDIR}/flashrom:bin/flashrom" \ + -files="${VPDDIR}/vpd:bin/vpd" \ + core github.com/u-root/u-root/cmds/boot/{systemboot,pxeboot,boot} \ + github.com/u-root/u-root/cmds/exp/{cbmem,dmidecode,modprobe,ipmidump,netbootxyz} \ + + note: flashrom and vpd binaries must be precompiled + +## Flashing coreboot + +Mono Lake in-band BIOS firmware image update uses [flashrom]: + flashrom -p internal:ich_spi_mode=hwseq -c "Opaque flash chip" --ifd \ + -i bios --noverify-all -w <path to coreboot image> + +Yosemite-V1 OpenBMC BIOS firmware image update uses fw-util: + fw-util slotx --update bios <path to coreboot image> + +## Yosimite-V1 server controls + +To power off/on a Mono Lake host: + power-util slotx off + power-util slotx on + +To connect to coreboot and Linux console through SOL (Serial Over Lan): + sol-util slotx + +## Firmware configurations +[ChromeOS VPD] is used to store most of the firmware configurations. +RO_VPD region holds default values, while RW_VPD region holds customized +values. + +VPD variables supported are: +- firmware_version: This variable holds overall firmware version. coreboot + uses that value to populate smbios type 1 version field. +- bmc_bootorder_override: When it's set to 1 IPMI OEM command can override boot + order. The boot order override is done in the u-root LinuxBoot payload. +- systemboot_log_level: u-root package systemboot log levels, would be mapped to + quiet/verbose in systemboot as that is all we have for now. 5 to 8 would be + mapped to verbose, 0 to 4 and 9 would be mapped to quiet. +- VPDs affecting coreboot are in src/mainboard/ocp/monolake/mainboard.c. + No coreboot VPD are required, uses safe defaults. + +## Working features +The solution is developed using LinuxBoot payload with Linux kernel 5.2.9, +and [u-root] as initramfs. +- BMC integration: + - BMC readiness check + - IPMI commands + - watchdog timer + - POST complete pin acknowledgement + - Check BMC version: ipmidump -device +- Early serial output +- ACPI tables: DMAR/DSDT/FACP/FACS/HPET/MCFG/SPMI/SRAT/SLIT/SSDT/XSDT +- FSP MRC cache support (Skipping memory training upon subsequent reboots) +- Versions + - Check FSP version: cbmem | grep LB_TAG_PLATFORM_BLOB_VERSION + - Check Microcode version: cat /proc/cpuinfo | grep microcode +- Devices: + - Boot drive + - All 5 data drives + - NIC card +- SMBIOS: + - Type 0 – BIOS Information + - Type 1 – System Information + - Type 2 – Baseboard Information + - Type 3 – System Enclosure or Chassis + - Type 4 – Processor Information + - Type 7 – Cache Information + - Type 16 – Physical Memory Array + - Type 17 – Memory Device + - Type 32 – System Boot Information + - Type 38 – IPMI Device Information + - Type 41 – Onboard Devices Extended Information + - Type 127 – End-of-Table +- Power button +- u-root boot +- u-root pxeboot + +## Stress and Performance tests passed + +## Known issues + +### Feature gaps +- flashrom command not able to update ME region +- ACPI BERT table +- PCIe hotplug through VPP (Virtual Pin Ports) +- RO_VPD region as well as other RO regions are not write protected +- Not able to selectively enable/disable core + +## Technology + +```eval_rst ++------------------------+---------------------------------------------+ +| Processor (1 socket) | Broadwell-DE | ++------------------------+---------------------------------------------+ +| BMC | Aspeed AST 1250 | ++------------------------+---------------------------------------------+ +``` + +[OCP]: https://www.opencompute.org +[introduced Yosemite]: https://engineering.fb.com/2015/03/10/core-data/introducing-yosemite-the-fir... +[Mono Lake was accepted]: https://www.opencompute.org/contributions?query=Tioga%20Pass%20v1.0 +[FSP]: https://doc.coreboot.org/soc/intel/fsp/index.html +[u-root Mono Lake pull request]: https://github.com/u-root/u-root/pull/2045 +[flashrom]: https://flashrom.org/Flashrom +[All about u-root]: https://github.com/linuxboot/book/tree/master/u-root +[u-root]: https://u-root.org/ +[ChromeOS VPD]: https://chromium.googlesource.com/chromiumos/platform/vpd/+/master/README.md
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