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-rw-r--r--docs/system/arm/aspeed.rst11
1 files changed, 11 insertions, 0 deletions
diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst
index d4e293e..8053842 100644
--- a/docs/system/arm/aspeed.rst
+++ b/docs/system/arm/aspeed.rst
@@ -122,6 +122,11 @@ Options specific to Aspeed machines are :
* ``spi-model`` to change the SPI Flash model.
+ * ``bmc-console`` to change the default console device. Most of the
+ machines use the ``UART5`` device for a boot console, which is
+ mapped on ``/dev/ttyS4`` under Linux, but it is not always the
+ case.
+
For instance, to start the ``ast2500-evb`` machine with a different
FMC chip and a bigger (64M) SPI chip, use :
@@ -129,6 +134,12 @@ FMC chip and a bigger (64M) SPI chip, use :
-M ast2500-evb,fmc-model=mx25l25635e,spi-model=mx66u51235f
+To change the boot console and use device ``UART3`` (``/dev/ttyS2``
+under Linux), use :
+
+.. code-block:: bash
+
+ -M ast2500-evb,bmc-console=uart3
Aspeed minibmc family boards (``ast1030-evb``)
==================================================================