On Monday 06 February 2012 18:00:17 Peter Naulls wrote: > On 02/06/2012 08:52 AM, jonsm...@gmail.com wrote: > > Most ARM CPUs have boot ROMs for getting the initial image out of > > flash. I'm referring to the boot loader that loads uboot, not uboot. > > The ARM CPUs I've worked with search for a signature in flash, if they > > can't find a valid signature they load from UART instead. Or you can > > use a jumper to force loading from UART. This allows you to recover > > from being bricked or initially load the flash without needing a > > special programmer. > > > > Do the MIPS based router CPUs have this ability? What does the on MIPS > > CPU ROM do if the image in flash is invalid? > > MIPS systems varies as much as ARM ones do. The short answer, is > it depends upon the hardware. For systems which lack serial/ROM > level recovery, you'll need to use JTAG. Some systems I work > with lack even that.
Actually, I have never seen a single MIPS system out there having such a boot ROM capability. -- Florian _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
