[PATCH 2/2] Documentation: mips: add little-endian qemu-malta HOWTO
Antony Pavlov
antonynpavlov at gmail.com
Thu Oct 9 13:08:57 PDT 2014
Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
---
Documentation/boards/mips/qemu-malta.rst | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/Documentation/boards/mips/qemu-malta.rst b/Documentation/boards/mips/qemu-malta.rst
index be89ae3..22da600 100644
--- a/Documentation/boards/mips/qemu-malta.rst
+++ b/Documentation/boards/mips/qemu-malta.rst
@@ -1,6 +1,9 @@
QEMU Malta
==========
+Big-endian mode
+---------------
+
QEMU run string::
qemu-system-mips -nodefaults -M malta -m 256 \
@@ -11,6 +14,27 @@ Also you can use GXemul::
gxemul -Q -x -e maltabe -M 256 0xbfc00000:barebox-flash-image
+
+Little-endian mode
+------------------
+
+Running little-endian Malta is a bit tricky.
+In little-endian mode the 32bit words in the boot flash image are swapped,
+a neat trick which allows bi-endian firmware.
+
+You have to swap words of ``zbarebox.bin`` image, e.g.::
+
+ echo arch/mips/pbl/zbarebox.bin \
+ | cpio --create \
+ | cpio --extract --swap --unconditional
+
+QEMU run string::
+
+ qemu-system-mipsel -nodefaults -M malta -m 256 \
+ -nographic -serial stdio -monitor null \
+ -bios barebox-flash-image
+
+
Links
-----
--
2.1.1
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