| Aspeed family boards (``*-bmc``, ``ast2500-evb``, ``ast2600-evb``) |
| ================================================================== |
| |
| The QEMU Aspeed machines model BMCs of various OpenPOWER systems and |
| Aspeed evaluation boards. They are based on different releases of the |
| Aspeed SoC : the AST2400 integrating an ARM926EJ-S CPU (400MHz), the |
| AST2500 with an ARM1176JZS CPU (800MHz) and more recently the AST2600 |
| with dual cores ARM Cortex A7 CPUs (1.2GHz). |
| |
| The SoC comes with RAM, Gigabit ethernet, USB, SD/MMC, USB, SPI, I2C, |
| etc. |
| |
| AST2400 SoC based machines : |
| |
| - ``palmetto-bmc`` OpenPOWER Palmetto POWER8 BMC |
| |
| AST2500 SoC based machines : |
| |
| - ``ast2500-evb`` Aspeed AST2500 Evaluation board |
| - ``romulus-bmc`` OpenPOWER Romulus POWER9 BMC |
| - ``witherspoon-bmc`` OpenPOWER Witherspoon POWER9 BMC |
| - ``sonorapass-bmc`` OCP SonoraPass BMC |
| - ``swift-bmc`` OpenPOWER Swift BMC POWER9 |
| |
| AST2600 SoC based machines : |
| |
| - ``ast2600-evb`` Aspeed AST2600 Evaluation board (Cortex A7) |
| - ``tacoma-bmc`` OpenPOWER Witherspoon POWER9 AST2600 BMC |
| |
| Supported devices |
| ----------------- |
| |
| * SMP (for the AST2600 Cortex-A7) |
| * Interrupt Controller (VIC) |
| * Timer Controller |
| * RTC Controller |
| * I2C Controller |
| * System Control Unit (SCU) |
| * SRAM mapping |
| * X-DMA Controller (basic interface) |
| * Static Memory Controller (SMC or FMC) - Only SPI Flash support |
| * SPI Memory Controller |
| * USB 2.0 Controller |
| * SD/MMC storage controllers |
| * SDRAM controller (dummy interface for basic settings and training) |
| * Watchdog Controller |
| * GPIO Controller (Master only) |
| * UART |
| * Ethernet controllers |
| * Front LEDs (PCA9552 on I2C bus) |
| * LPC Peripheral Controller (a subset of subdevices are supported) |
| * Hash/Crypto Engine (HACE) - Hash support only. TODO: HMAC and RSA |
| |
| |
| Missing devices |
| --------------- |
| |
| * Coprocessor support |
| * ADC (out of tree implementation) |
| * PWM and Fan Controller |
| * Slave GPIO Controller |
| * Super I/O Controller |
| * PCI-Express 1 Controller |
| * Graphic Display Controller |
| * PECI Controller |
| * MCTP Controller |
| * Mailbox Controller |
| * Virtual UART |
| * eSPI Controller |
| * I3C Controller |
| |
| Boot options |
| ------------ |
| |
| The Aspeed machines can be started using the ``-kernel`` option to |
| load a Linux kernel or from a firmware. Images can be downloaded from |
| the OpenBMC jenkins : |
| |
| https://jenkins.openbmc.org/job/ci-openbmc/lastSuccessfulBuild/distro=ubuntu,label=docker-builder |
| |
| or directly from the OpenBMC GitHub release repository : |
| |
| https://github.com/openbmc/openbmc/releases |
| |
| The image should be attached as an MTD drive. Run : |
| |
| .. code-block:: bash |
| |
| $ qemu-system-arm -M romulus-bmc -nic user \ |
| -drive file=obmc-phosphor-image-romulus.static.mtd,format=raw,if=mtd -nographic |
| |
| Options specific to Aspeed machines are : |
| |
| * ``execute-in-place`` which emulates the boot from the CE0 flash |
| device by using the FMC controller to load the instructions, and |
| not simply from RAM. This takes a little longer. |
| |
| * ``fmc-model`` to change the FMC Flash model. FW needs support for |
| the chip model to boot. |
| |
| * ``spi-model`` to change the SPI Flash model. |
| |
| For instance, to start the ``ast2500-evb`` machine with a different |
| FMC chip and a bigger (64M) SPI chip, use : |
| |
| .. code-block:: bash |
| |
| -M ast2500-evb,fmc-model=mx25l25635e,spi-model=mx66u51235f |
