Baseboard Management Controllers (BMCs) are special processors that monitors state of a computer, often used in data center servers. They often communicate via IPMI. As a result, it is important to emulate the IPMI interface so that they can connect to host machines.
This patch set aims to refactor the existing hw/ipmi and make it handles both Core side and BMC side emulations. We also added the implementation of the KCS module for NPCM7XX BMC boards that work as a backend. We have tested this patch on various NPCM7xx based systems and they can communicate with a host that runs `ipmi-bmc-extern`. The structure is as follows: Patch 1-3 contains some documentation written by Havard Skinnomoen that how the emulation of existing host-side IPMI and the new BMC-side IPMI works. Patch 4-6 refactors the current IPMI code so that they work for both host-side and BMC-side. Patch 7 adds a new ipmi-host-extern which represents BMC-side emulation that is similar to the current ipmi-bmc-extern. Patch 8 implements the KCS device in NPCM7XX boards. It works as a backend to the ipmi-host-extern device. Since the direction is different we can't directly use ipmi-kcs.c for BMC emulation. Hao Wu (5): hw/ipmi: Refactor IPMI interface hw/ipmi: Take out common from ipmi_bmc_extern.c hw/ipmi: Move handle_command to IPMICoreClass hw/ipmi: Add an IPMI external host device hw/ipmi: Add a KCS Module for NPCM7XX Havard Skinnemoen (3): docs: enable sphinx blockdiag extension docs/specs: IPMI device emulation: main processor docs/specs: IPMI device emulation: BMC configs/devices/arm-softmmu/default.mak | 2 + docs/conf.py | 6 +- docs/specs/index.rst | 1 + docs/specs/ipmi.rst | 170 +++++++ docs/system/arm/nuvoton.rst | 1 - hw/arm/npcm7xx.c | 10 +- hw/ipmi/Kconfig | 5 + hw/ipmi/ipmi.c | 15 +- hw/ipmi/ipmi_bmc_extern.c | 417 ++--------------- hw/ipmi/ipmi_bmc_sim.c | 47 +- hw/ipmi/ipmi_bt.c | 6 +- hw/ipmi/ipmi_extern.c | 429 +++++++++++++++++ hw/ipmi/ipmi_extern.h | 90 ++++ hw/ipmi/ipmi_host_extern.c | 170 +++++++ hw/ipmi/ipmi_kcs.c | 8 +- hw/ipmi/isa_ipmi_bt.c | 4 +- hw/ipmi/isa_ipmi_kcs.c | 4 +- hw/ipmi/meson.build | 4 +- hw/ipmi/npcm7xx_kcs.c | 588 ++++++++++++++++++++++++ hw/ipmi/pci_ipmi_bt.c | 4 +- hw/ipmi/pci_ipmi_kcs.c | 4 +- hw/ipmi/smbus_ipmi.c | 12 +- hw/ipmi/trace-events | 8 + hw/ipmi/trace.h | 1 + include/hw/arm/npcm7xx.h | 2 + include/hw/ipmi/ipmi.h | 54 ++- include/hw/ipmi/npcm7xx_kcs.h | 103 +++++ meson.build | 1 + 28 files changed, 1733 insertions(+), 433 deletions(-) create mode 100644 docs/specs/ipmi.rst create mode 100644 hw/ipmi/ipmi_extern.c create mode 100644 hw/ipmi/ipmi_extern.h create mode 100644 hw/ipmi/ipmi_host_extern.c create mode 100644 hw/ipmi/npcm7xx_kcs.c create mode 100644 hw/ipmi/trace-events create mode 100644 hw/ipmi/trace.h create mode 100644 include/hw/ipmi/npcm7xx_kcs.h -- 2.33.0.309.g3052b89438-goog
