Messages in this thread | | | Date | Wed, 17 Mar 2010 23:42:51 +1100 | From | Graeme Russ <> | Subject | x86 - Boot hangs at Calibrating delay loop on AMD SC520 |
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I now have U-Boot booting 2.6.33 (abandoned 32-bit Boot Protocol and got a pseudo BIOS working)
During boot I was getting a warning at arch/x86/kernel/rtc.c:125 and the kernel hung at Calibrating delay loop... Also, all boot messages have a zero time-stamp.
I have tried a 2.4.37.9 kernel and get the same freeze calibrating the delay loop.
I have tried with and without the AMD Elan Extended (non-PC) x86 platform
I first assumed that the RTC is not working - I wasn't initially doing anything relating to the SC520 RTC in U-Boot. I have added initialisation code (as per the ÉlanTMSC520 Microcontroller User’s Manual Order #22004B) and confirmed that the RTC is working in the SC520.
If traced back how the delay loop is performed and that has led me to arch/x86/lib/delay.c where I promptly got very lost.
Any ideas?
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