Using the vbootrom image support and the boot ROM binary is
now passed via the -bios option, using the image located in
pc-bios/ast27x0_bootrom.bin.
Signed-off-by: Jamin Lin <jamin_...@aspeedtech.com>
---
docs/system/arm/aspeed.rst | 29 ++++++++++++++++++++++++++++-
1 file changed, 28 insertions(+), 1 deletion(-)
diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst
index 97fd6a0e7f..c87a2cf796 100644
--- a/docs/system/arm/aspeed.rst
+++ b/docs/system/arm/aspeed.rst
@@ -250,7 +250,14 @@ under Linux), use :
Booting the ast2700-evb machine
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Boot the AST2700 machine from the flash image, use an MTD drive :
+Boot the AST2700 machine from the flash image.
+
+There are two supported methods for booting the AST2700 machine with a flash
image:
+
+Manual boot using ``-device loader``:
+
+It causes all 4 CPU cores to start execution from address ``0x430000000``,
which
+corresponds to the BL31 image load address.
.. code-block:: bash
@@ -270,6 +277,26 @@ Boot the AST2700 machine from the flash image, use an MTD
drive :
-drive file=${IMGDIR}/image-bmc,format=raw,if=mtd \
-nographic
+Boot using a virtual boot ROM (``-bios``):
+
+If users do not specify the ``-bios option``, QEMU will attempt to load the
+default vbootrom image ``ast27x0_bootrom.bin`` from either the current working
+directory or the ``pc-bios`` directory within the QEMU source tree.
+
+.. code-block:: bash
+
+ $ qemu-system-aarch64 -M ast2700-evb \
+ -drive file=image-bmc,format=raw,if=mtd \
+ -nographic
+
+The ``-bios`` option allows users to specify a custom path for the vbootrom
+image to be loaded during boot. This will load the vbootrom image from the
+specified path in the ${HOME} directory.
+
+.. code-block:: bash
+
+ -bios ${HOME}/ast27x0_bootrom.bin
+
Aspeed minibmc family boards (``ast1030-evb``)
==================================================================
--
2.43.0
