Hi, (please avoid top-posting) Ryan <ryanphilips19@xxxxxxxxxxxxxx> writes: > Hi Tony, > > Thanks for your response. I dont see any prints. I suspect that it > might be hanging before the serial port is initialized > > All i see is after arch_reset is called. I can see that is mmc clk and > data signals toggling. This makes me think that boot rom has loaded > the xloader into sram. you might wanna consider openocd if your jtag interface is available somewhere on your pcb. Just keep in mind that you might have to fiddle a bit with some TCL config files to get openocd to behave correctly with your board. cheers > On Thu, Dec 10, 2015 at 1:44 AM, Tony Lindgren <tony@xxxxxxxxxxx> wrote: >> * Ryan <ryanphilips19@xxxxxxxxxxxxxx> [151209 09:03]: >>> Hello, >>> >>> On a custom 4460 board. The x-loader hangs at some place when we >>> reboot. This happens occasionally on an android port by linaro. >>> >>> I just want to find out how to debug in this case. How can i get to >>> know where the hang takes place. After boot rom, i can see the mmc clk >>> toggling >>> indicating that xloader is in sram when the hang takes place and not >>> sure where the hang is. >>> >>> Do i need Lauterbach to debug - Is it possible to connect the emulator >>> across reboot. If so, how? or is there any other way i can debug this >>> >>> Also, i want to check - If i can turn off the dplls? If so, how? >>> >>> I tried to do a disable on all the clocks in the clock list using >>> clk_disable call just before reboot and that does not seem to help. >> >> You can add selected serial print statements very early into u-boot >> MLO (and probably x-loader). You need to keep them down to minimum >> so the image still fits into SRAM. If you enable debug, then that also >> needs to be limited to selected files only as enabling debug for the >> whole MLO/x-loader in the Makefile will make it too big. >> >> Regards, >> >> Tony > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- balbi
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