95 lines
3.0 KiB
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95 lines
3.0 KiB
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Nuvoton iBMC boards (``*-bmc``, ``npcm750-evb``, ``quanta-gsj``)
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================================================================
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The `Nuvoton iBMC`_ chips (NPCM7xx) are a family of ARM-based SoCs that are
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designed to be used as Baseboard Management Controllers (BMCs) in various
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servers. They all feature one or two ARM Cortex-A9 CPU cores, as well as an
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assortment of peripherals targeted for either Enterprise or Data Center /
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Hyperscale applications. The former is a superset of the latter, so NPCM750 has
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all the peripherals of NPCM730 and more.
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.. _Nuvoton iBMC: https://www.nuvoton.com/products/cloud-computing/ibmc/
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The NPCM750 SoC has two Cortex-A9 cores and is targeted for the Enterprise
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segment. The following machines are based on this chip :
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- ``npcm750-evb`` Nuvoton NPCM750 Evaluation board
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The NPCM730 SoC has two Cortex-A9 cores and is targeted for Data Center and
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Hyperscale applications. The following machines are based on this chip :
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- ``quanta-gbs-bmc`` Quanta GBS server BMC
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- ``quanta-gsj`` Quanta GSJ server BMC
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There are also two more SoCs, NPCM710 and NPCM705, which are single-core
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variants of NPCM750 and NPCM730, respectively. These are currently not
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supported by QEMU.
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Supported devices
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-----------------
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* SMP (Dual Core Cortex-A9)
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* Cortex-A9MPCore built-in peripherals: SCU, GIC, Global Timer, Private Timer
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and Watchdog.
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* SRAM, ROM and DRAM mappings
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* System Global Control Registers (GCR)
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* Clock and reset controller (CLK)
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* Timer controller (TIM)
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* Serial ports (16550-based)
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* DDR4 memory controller (dummy interface indicating memory training is done)
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* OTP controllers (no protection features)
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* Flash Interface Unit (FIU; no protection features)
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* Random Number Generator (RNG)
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* USB host (USBH)
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* GPIO controller
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* Analog to Digital Converter (ADC)
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* Pulse Width Modulation (PWM)
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* SMBus controller (SMBF)
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* Ethernet controller (EMC)
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* Tachometer
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Missing devices
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---------------
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* LPC/eSPI host-to-BMC interface, including
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* Keyboard and mouse controller interface (KBCI)
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* Keyboard Controller Style (KCS) channels
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* BIOS POST code FIFO
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* System Wake-up Control (SWC)
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* Shared memory (SHM)
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* eSPI slave interface
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* Ethernet controller (GMAC)
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* USB device (USBD)
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* Peripheral SPI controller (PSPI)
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* SD/MMC host
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* PECI interface
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* PCI and PCIe root complex and bridges
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* VDM and MCTP support
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* Serial I/O expansion
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* LPC/eSPI host
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* Coprocessor
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* Graphics
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* Video capture
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* Encoding compression engine
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* Security features
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Boot options
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------------
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The Nuvoton machines can boot from an OpenBMC firmware image, or directly into
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a kernel using the ``-kernel`` option. OpenBMC images for ``quanta-gsj`` and
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possibly others can be downloaded from the OpenPOWER jenkins :
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https://openpower.xyz/
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The firmware image should be attached as an MTD drive. Example :
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.. code-block:: bash
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$ qemu-system-arm -machine quanta-gsj -nographic \
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-drive file=image-bmc,if=mtd,bus=0,unit=0,format=raw
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The default root password for test images is usually ``0penBmc``.
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