RTL driver update (still in progress)

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3346 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 47 insertions, 0 deletions

diff --git a/nuttx/configs/qemu-i486/README.txt b/nuttx/configs/qemu-i486/README.txt
index d4c418ed8..32cbfa76f 100644
--- a/nuttx/configs/qemu-i486/README.txt
+++ b/nuttx/configs/qemu-i486/README.txt
@@ -4,6 +4,53 @@ README
 This README file describes the contents of the build configurations available
 for the NuttX QEMU i486 port.
 
+Contents
+^^^^^^^^
+
+  * QEMU
+  * Configurations
+
+QEMU
+^^^^
+
+QEMU is a generic and open source machine emulator and virtualizer.  Here are
+some links (which are mostly outdated by the time your read this):
+
+  Home Page:     http://wiki.qemu.org/Main_Page
+  Downloads:     http://wiki.qemu.org/Download
+  Documentation: http://wiki.qemu.org/Manual
+  Usage:         qemu -nographic -kernel nuttx.elf
+
+Building QEMU:
+
+  tar zxf qemu-0.14.0.tar.gz 
+  cd qemu-0.14.0
+  ./configure
+  make
+  make install
+
+Cygwin build problems:
+
+  Error:
+ 
+    "gcc: The -mno-cygwin flag has been removed; use a mingw-targeted cross-compiler."
+
+  Workaround:
+  
+    None known.  It does not seem possible to build QEMU using the Cygwin gcc.
+	I tried editing configure.  Removing the following line will allow QEMU to
+	configure:
+  
+      QEMU_CFLAGS="-mno-cygwin $QEMU_CFLAGS"
+
+	However, it then fails later during the compilation phase.
+
+  Recommendation:
+ 
+    1. Google for "qemu windows download" and download some pre-built QEMU
+	   binaries.  I found 0.14.0 here: http://dietpc.org/windows/qemu/, or
+	2. Try building QEMU with MingGW
+
 Configurations
 ^^^^^^^^^^^^^^