Hi,
Well, here I am again with my at91rm9200dk based board. I got a segfault (data abort) after entering the "usb start" command with a 512mb Sandisk USB pendrive connected. The command succeeds if no usb drive is connected and obviously it reports no storage device found as expected.
The problem seemed to be inside the usb_set_maxpacket(struct usb_device *dev) function (from common/usb.c). For the OHCI hub device it runs well but, oddly enough, for the detected usb device a fault happens anywhere we try to access ep->wMaxPacketSize value! Weird, han? The only way I found to fix it was declaring struct usb_device with __attribute__ ((packed)) inside usb.h. This makes me wonder if there's a hidden alignment issue around...
My fix was:
--- u-boot-1.3.4.original/include/usb.h 2008-08-12 11:08:38.000000000 -0300 +++ u-boot-1.3.4/include/usb.h 2008-09-03 17:01:03.000000000 -0300 @@ -163,7 +163,7 @@ int maxchild; /* Number of ports if hub */ struct usb_device *parent; struct usb_device *children[USB_MAXCHILDREN]; -}; +} __attribute__ ((packed));
/********************************************************************** * this is how the lowlevel part communicate with the outer world --
For the record, I'm using u-boot 1.3.4 stable from DENX Ftp and CodeSourcery's toolchain.
$ arm-none-linux-gnueabi-gcc -v Using built-in specs. Target: arm-none-linux-gnueabi Configured with: /scratch/sandra/lite/src/gcc-4.2/configure --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --target=arm-none-linux-gnueabi --enable-threads --disable-libmudflap --disable-libssp --disable-libgomp --disable-libstdcxx-pch --with-gnu-as --with-gnu-ld --enable-languages=c,c++ --enable-shared --enable-symvers=gnu --enable-__cxa_atexit --with-pkgversion=Sourcery G++ Lite 2008q1-126 --with-bugurl=https://support.codesourcery.com/GNUToolchain/ --disable-nls --prefix=/opt/codesourcery --with-sysroot=/opt/codesourcery/arm-none-linux-gnueabi/libc --with-build-sysroot=/scratch/sandra/lite/linux/install/arm-none-linux-gnueabi/libc --enable-poison-system-directories --with-build-time-tools=/scratch/sandra/lite/linux/install/arm-none-linux-gnueabi/bin --with-build-time-tools=/scratch/sandra/lite/linux/install/arm-none-linux-gnueabi/bin Thread model: posix gcc version 4.2.3 (Sourcery G++ Lite 2008q1-126)
Regards,
Nícolas