sys_eeprom.c:353: buffer too small [qemu-2.1.2/roms/u-boot/board/matrix_vision/mvblx/sys_eeprom.c:353]: (error) Buffer is accessed out of bounds. char ethaddr[9]; sprintf(ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X", e.mac[0], e.mac[1], e.mac[2], e.mac[3], e.mac[4], e.mac[5]); 18 into 9 won't go. Suggest increase size of ethaddr. roms/u-boot is not under control of the QEMU project - you should report such bugs to the u-boot project instead. Anyway, looks like the problem has been fixed there: http://git.denx.de/?p=u-boot.git;a=commitdiff;h=cc87d18a6ec74180784a6b