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From: Antony Pavlov <antonynpavlov@gmail.com>
To: barebox@lists.infradead.org
Subject: [PATCH 2/2] Documentation: mips: add little-endian qemu-malta HOWTO
Date: Fri, 10 Oct 2014 00:08:57 +0400	[thread overview]
Message-ID: <1412885337-1544-3-git-send-email-antonynpavlov@gmail.com> (raw)
In-Reply-To: <1412885337-1544-1-git-send-email-antonynpavlov@gmail.com>

Signed-off-by: Antony Pavlov <antonynpavlov@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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  parent reply	other threads:[~2014-10-09 20:09 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-09 20:08 [PATCH 0/2] mips: qemu-malta: add little-endian mode support Antony Pavlov
2014-10-09 20:08 ` [PATCH 1/2] " Antony Pavlov
2014-10-09 20:08 ` Antony Pavlov [this message]
2014-10-10  6:38 ` [PATCH 0/2] " Sascha Hauer
2014-10-10  8:43   ` Antony Pavlov

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