Hello, because I've recently seen some other places where volatile is used to access registers without using read?() or write?() and many people seem to start using 4.5.1, I want to post this warning using a descriptive subject.
The keyword volatile might not have any effect when reading when gcc 4.5.0 or 4.5.1 is used. The appropriate bug seems to be that one: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45052 You might either change such code to use readb(), readw() or readl(), or you have to use either an older version of gcc or a version >= 4.5.2 (it is fixed in 4.5.2). A patch for write?() and read?() is currently in the u-boot-arm-repository (but not in the master and not in 2010.12): http://lists.denx.de/pipermail/u-boot/2011-January/084885.html Regards, Alexander _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot