fiasco r52 on beagleboard xm

Sin-ta Hsiea at
Sun May 5 22:20:09 CEST 2013


I've tried running r47 fiasco kernel on beagleboard xm platform, it
was fine, but after upgrading sources to r52, it broke.

Output message hang after this line.
  Hello from Startup::stage2

After debugged using JTAG, I found that after page table modified, MMU
still can't translate that address.
So I add this line to source:

--- src/kern/arm/paging-arm.cpp (revision 52)
+++ src/kern/arm/paging-arm.cpp (working copy)
@@ -348,6 +348,7 @@
 Pte_ptr::write_back_if(bool, Mword asid = Mem_unit::Asid_invalid)
+  Mem_unit::clean_dcache(pte);
   if (asid != Mem_unit::Asid_invalid)

Then output message hang after this line:
  Calibrating timer loop... done.

It seems that MMU doesn't notice page table was switched to sigma0's pagetable.

I also tried pandaboard, it just works fine.

Does anybody have idea how to fix this?

Best regard,
SIn-ta Hsiea

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