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-rw-r--r--docs/system/arm/aspeed.rst85
-rw-r--r--docs/system/target-arm.rst1
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diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst
new file mode 100644
index 0000000000..45f891eb3c
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+++ b/docs/system/arm/aspeed.rst
@@ -0,0 +1,85 @@
+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
+
+
+Missing devices
+---------------
+
+ * Coprocessor support
+ * ADC (out of tree implementation)
+ * PWM and Fan Controller
+ * LPC Bus Controller
+ * Slave GPIO Controller
+ * Super I/O Controller
+ * Hash/Crypto Engine
+ * 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 firmare image which can be downloaded from the
+OpenPOWER jenkins :
+
+ https://openpower.xyz/
+
+The image should be attached as an MTD drive. Run :
+
+.. code-block:: bash
+
+ $ qemu-system-arm -M romulus-bmc -nic user \
+ -drive file=flash-romulus,format=raw,if=mtd -nographic
diff --git a/docs/system/target-arm.rst b/docs/system/target-arm.rst
index dce384cb0e..1bd477a293 100644
--- a/docs/system/target-arm.rst
+++ b/docs/system/target-arm.rst
@@ -81,6 +81,7 @@ undocumented; you can get a complete list by running
arm/realview
arm/versatile
arm/vexpress
+ arm/aspeed
arm/musicpal
arm/nseries
arm/orangepi