Hi Catalin and Stephen, Catalin Marinas - July 8, 2012, 9:18 a.m. > On Fri, Jul 06, 2012 at 10:32:54PM +0100, Stephen Warren wrote: > >> Also, on Tegra at least and perhaps OMAP too, there are a few parts >> of earlyprintk serial port setup (i.e. port selection) which happen >> as part of the decompressor rather than the main kernel image, so >> we'd have to re-jig that too. > > Whatever we did on AArch32, if it was useful and we want to follow a > similar model it needs porting given that the code cannot be shared. So > there is nothing to re-jig but rather implement. > > As for earlyprintk, you can initialise it in the decompressed kernel > anyway. But even though it's a useful debugging tool, it goes against > the single Image aim (at least the current printascii/addruart > implementation). I don't have a proper implementation yet.
Would DCC [1] be a reasonably commonly available early printk mechanism for the single image to provide? 1. http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0471c/BEIHGIBB.html Thanks, Christopher -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
