1 Aspeed family boards (``*-bmc``, ``ast2500-evb``, ``ast2600-evb``)
2 ==================================================================
4 The QEMU Aspeed machines model BMCs of various OpenPOWER systems and
5 Aspeed evaluation boards. They are based on different releases of the
6 Aspeed SoC : the AST2400 integrating an ARM926EJ-S CPU (400MHz), the
7 AST2500 with an ARM1176JZS CPU (800MHz) and more recently the AST2600
8 with dual cores ARM Cortex A7 CPUs (1.2GHz).
10 The SoC comes with RAM, Gigabit ethernet, USB, SD/MMC, USB, SPI, I2C,
13 AST2400 SoC based machines :
15 - ``palmetto-bmc`` OpenPOWER Palmetto POWER8 BMC
17 AST2500 SoC based machines :
19 - ``ast2500-evb`` Aspeed AST2500 Evaluation board
20 - ``romulus-bmc`` OpenPOWER Romulus POWER9 BMC
21 - ``witherspoon-bmc`` OpenPOWER Witherspoon POWER9 BMC
22 - ``sonorapass-bmc`` OCP SonoraPass BMC
23 - ``swift-bmc`` OpenPOWER Swift BMC POWER9
25 AST2600 SoC based machines :
27 - ``ast2600-evb`` Aspeed AST2600 Evaluation board (Cortex A7)
28 - ``tacoma-bmc`` OpenPOWER Witherspoon POWER9 AST2600 BMC
33 * SMP (for the AST2600 Cortex-A7)
34 * Interrupt Controller (VIC)
38 * System Control Unit (SCU)
40 * X-DMA Controller (basic interface)
41 * Static Memory Controller (SMC or FMC) - Only SPI Flash support
42 * SPI Memory Controller
44 * SD/MMC storage controllers
45 * SDRAM controller (dummy interface for basic settings and training)
47 * GPIO Controller (Master only)
49 * Ethernet controllers
50 * Front LEDs (PCA9552 on I2C bus)
57 * ADC (out of tree implementation)
58 * PWM and Fan Controller
60 * Slave GPIO Controller
61 * Super I/O Controller
63 * PCI-Express 1 Controller
64 * Graphic Display Controller
75 The Aspeed machines can be started using the ``-kernel`` option to
76 load a Linux kernel or from a firmware. Images can be downloaded from
79 https://jenkins.openbmc.org/job/ci-openbmc/lastSuccessfulBuild/distro=ubuntu,label=docker-builder
81 or directly from the OpenBMC GitHub release repository :
83 https://github.com/openbmc/openbmc/releases
85 The image should be attached as an MTD drive. Run :
89 $ qemu-system-arm -M romulus-bmc -nic user \
90 -drive file=obmc-phosphor-image-romulus.static.mtd,format=raw,if=mtd -nographic
92 Options specific to Aspeed machines are :
94 * ``execute-in-place`` which emulates the boot from the CE0 flash
95 device by using the FMC controller to load the instructions, and
96 not simply from RAM. This takes a little longer.
98 * ``fmc-model`` to change the FMC Flash model. FW needs support for
99 the chip model to boot.
101 * ``spi-model`` to change the SPI Flash model.
103 For instance, to start the ``ast2500-evb`` machine with a different
104 FMC chip and a bigger (64M) SPI chip, use :
108 -M ast2500-evb,fmc-model=mx25l25635e,spi-model=mx66u51235f