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diff --git a/docs/system/arm/cubieboard.rst b/docs/system/arm/cubieboard.rst
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+Cubietech Cubieboard (``cubieboard``)
+=====================================
+
+The ``cubieboard`` model emulates the Cubietech Cubieboard,
+which is a Cortex-A8 based single-board computer using
+the AllWinner A10 SoC.
+
+Emulated devices:
+
+- Timer
+- UART
+- RTC
+- EMAC
+- SDHCI
+- USB controller
+- SATA controller
diff --git a/docs/system/arm/emcraft-sf2.rst b/docs/system/arm/emcraft-sf2.rst
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+Emcraft SmartFusion2 SOM kit (``emcraft-sf2``)
+==============================================
+
+The ``emcraft-sf2`` board emulates the SmartFusion2 SOM kit from
+Emcraft (M2S010). This is a System-on-Module from EmCraft systems,
+based on the SmartFusion2 SoC FPGA from Microsemi Corporation.
+The SoC is based on a Cortex-M4 processor.
+
+Emulated devices:
+
+- System timer
+- System registers
+- SPI controller
+- UART
+- EMAC
diff --git a/docs/system/arm/highbank.rst b/docs/system/arm/highbank.rst
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+Calxeda Highbank and Midway (``highbank``, ``midway``)
+======================================================
+
+``highbank`` is a model of the Calxeda Highbank (ECX-1000) system,
+which has four Cortex-A9 cores.
+
+``midway`` is a model of the Calxeda Midway (ECX-2000) system,
+which has four Cortex-A15 cores.
+
+Emulated devices:
+
+- L2x0 cache controller
+- SP804 dual timer
+- PL011 UART
+- PL061 GPIOs
+- PL031 RTC
+- PL022 synchronous serial port controller
+- AHCI
+- XGMAC ethernet controllers