disable warm reboot on romulus

Similar to commit 567a8d for witherspoon, this issue has now popped
up on Romulus hardware.

The concept of warm reboot (reboot the host without removing chassis
power) was added a while back as a part of clarifying support for
the Redfish ComputerSystem.Reset Action. It has since been found that
some IBM hardware, including Romulus, do not support warm reboots.
The issue is intermittent and depends on the reboot being requested
while the host is in the middle of some i2c transactions. If a warm
reboot occurs during this window, then on the subsequent boot the i2c
hardware will be in a bad state and the host firmware is unable to
recover it.

Given this issue, it has been requested that BMC software go back to
doing cold reboots (cycling power to the chassis during any reboot
request) on this hardware.

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: Ie25d4c7be191f1ffd25f19261645ad6f2ff566b7
1 file changed
tree: c32b2898cfab9034b110cafe000b2923e4b7f61e
  1. conf/
  2. meta-fsp2/
  3. meta-palmetto/
  4. meta-romulus/
  5. recipes-core/
  6. recipes-kernel/
  7. recipes-phosphor/
  8. COPYING.apache-2.0
  9. COPYING.MIT
  10. LICENSE
  11. MAINTAINERS
  12. README.md
  13. recipes.txt
README.md

OpenEmbedded/Yocto/OpenBMC BSP layer for IBM systems

This layer provides support for the BMC firmware on IBM POWER systems server products.

This layer depends on:

URI: git://git.openembedded.org/openembedded-core
layers: meta
branch: master
revision: HEAD

URI: https://github.com/openbmc/meta-phosphor
branch: master
revision: HEAD

URI: https://github.com/openbmc/meta-openpower
branch: master
revision: HEAD

URI: https://github.com/openbmc/meta-aspeed
branch: master
revision: HEAD

The following systems are supported.

Witherspoon, or AC922, is an IBM POWER9 two-socket, 2U Accelerated Compute Server with up to 6 NVIDIA Tesla GPUs. More information can be found here.

In addition to witherspoon, this layer contains additional machine configurations such as swift. The default machine target is witherspoon, so in order to build a different configuration, or to build witherspoon after building a different one, set the MACHINE environment to the desired configuration name (see the conf/machine/ subdirectory for available options):

export MACHINE=machine_configuration_name

Then build:

bitbake obmc-phosphor-image

Example:

export MACHINE=swift
bitbake obmc-phosphor-image
bitbake phosphor-logging

export MACHINE=witherspoon
bitbake obmc-phosphor-image

Contributing

meta-ibm patches are reviewed using the Gerrit instance at https://gerrit.openbmc-project.xyz.

Please submit patches to Gerrit. More information on using Gerrit can be found here. https://github.com/openbmc/meta-ibm is a hosting mirror only and GitHub pull requests are not monitored and will not be accepted.

Patch checklist. Please ensure patches adhere to the following guidelines:

For questions or help please come join us on the mailing list or in IRC.