Dear All, Though this is not related to Linux, I hope to get your expertise support to solve a A20 related issue. We are trying to port Windows C E on to Marsboard (A20). While the OS is working fine in single CPU mode, when we enabled SMP, the system starts to hang. It may hang any time between 5 seconds to 100 seconds of booting up the secondary CPU. 50% of the time it hangs when the main CPU0 sends an IPI (as SGI) and waits for the other CPU1 to respond. And it seems CPU1 is lost and it is not receiving the interrupt at all. RST_CTRL, CTRL_REG and STATUS_REG of both CPU's shows 0x3, 0, and 0x1 respectively Other times it just hangs. But no exceptions are thrown. My understanding is that any one or both of the cores just got locked for some reasons. . Suspected power issues and tried with recommended 912MHz/1.4 and 912MHz/1.425 configurations without any luck. Did any of you faced such issues during any time working in Linux or any other hints that may help us.
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