Hi! Peter has reported on strange barebox memcpy command behaviour on his MIPS board: he copies a file to memory using memcpy and then copyies appropriate memory contents back to another file. Next he checks files md5sum and the sums are differ. I have reproduced the problem on Qemu VersatilePB ARM board. Here is an instruction. Configure barebox: $ cd barebox.git $ export ARCH=arm $ export CROSS_COMPILE=<your cross compiler prefix> $ make versatilepb_defconfig $ sed -i "s/^# CONFIG_CMD_MD5SUM.*$/CONFIG_CMD_MD5SUM=y/" .config Prepare testfile on host and compile: $ dd if=/dev/zero bs=1 count=4414 | tr "\000" "\377" > defaultenv/defaultenv-2-base/testfile $ make ... Run barebox under qemu: $ qemu-system-arm -M versatilepb -nographic -monitor null -kernel arch/arm/pbl/zbarebox -serial stdio ... barebox# memcpy -s /env/testfile 0 0x01000000 barebox# memcpy -d _testfile 0x01000000 0 4414 barebox# md5sum /env/testfile _testfile bf8278051ba8de868def083bcc209002 /env/testfile 0x00000000 ... 0xffffffffffffffff e295c2bfe32498e03531017443120e89 _testfile 0x00000000 ... 0xffffffffffffffff barebox# memcmp -s /env/testfile -d _testfile 0 0 files differ at offset 4408 barebox# md -s /env/testfile 4400 00001130: ffffffff ffffffff ffffffff ffffffff .............. barebox# md -s _testfile 4400 00001130: ffffffff ffffffff 00000000 ffff0000 .............. barebox# md -b 0x01001130+0xe 01001130: ff ff ff ff ff ff ff ff 00 00 00 00 00 00 .............. barebox# md -b -s /env/testfile 0x1130+0xe 00001130: ff ff ff ff ff ff ff ff ff ff ff ff ff ff .............. So you see that last 6 bytes have not been copied. Please comment this report! -- Best regards, Antony Pavlov _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
