Openmoko Bug #2309: hangs during resume after printing GSTATUS4

[Openmoko Public Trac]

#2309: hangs during resume after printing GSTATUS4
--------------------+-------------------------------------------------------
 Reporter:  lindi   |          Owner:  openmoko-kernel      
     Type:  defect  |         Status:  new                  
 Priority:  normal  |      Milestone:                       
Component:  kernel  |        Version:                       
 Severity:  normal  |       Keywords:  resume suspend kernel
 Haspatch:  0       |      Blockedby:                       
Estimated:          |    Patchreview:                       
 Blocking:          |   Reproducible:  rarely               
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Comment(by lindi):

 Here's some more information. The CPU seems to be constantly hitting
 prefetch abort. RAM seems to be alive.

 {{{
 > dump_image fr.1 0x30000000 134217728
 }}}

 was so slow that I only managed to capture 53 MB of RAM before the FR ran
 out of battery. This RAM looks very odd:

 {{{
 $ hd proj/openocd-config/openocd/fr.2|cut --bytes=12-|sort|uniq -c
    1843
    1842 0 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
     921 0 00 00 00 00 00 00 00  00 00 00 00 34 00 ff ff
 |............4.ÿÿ|
  486840 0 00 00 00 25 3d ba 00  80 46 ea c9 80 0b 53 1b
 |....%=º..FêÉ..S.|
       1 0 00 00 00 30 0b ff ff  00 00 00 00 00 00 00 00
 |....0.ÿÿ........|
     736 0 00 00 00 34 00 ff ff  00 00 00 00 00 00 00 00
 |....4.ÿÿ........|
     183 0 00 00 00 68 00 ff ff  00 00 00 00 00 00 00 00
 |....h.ÿÿ........|
       1 0 00 00 00 ac 0b ff ff  00 00 00 00 00 00 00 00
 |....¬.ÿÿ........|
  486840 0 46 ea c9 80 0b 53 1b  00 e0 e4 26 80 50 00 2e
 |.FêÉ..S..àä&.P..|
  486840 0 73 4d 81 80 c8 a5 e5  80 f6 03 05 37 00 00 00
 |.sM..È¥å.ö..7...|
  486840 0 e0 e4 26 80 50 00 2e  00 73 4d 81 80 c8 a5 e5
 |.àä&.P...sM..È¥å|
  486840 0 f6 03 05 37 00 00 00  3e 00 00 00 3e 00 00 00
 |.ö..7...>...>...|
  389472 e 00 00 00 34 00 ff ff  00 00 00 00 25 3d ba 00
 |>...4.ÿÿ....%=º.|
  486840 e 00 00 00 3e 00 00 00  3e 00 00 00 34 00 ff ff
 |>...>...>...4.ÿÿ|
   97368 e 00 00 00 68 00 ff ff  00 00 00 00 25 3d ba 00
 |>...h.ÿÿ....%=º.|
 }}}

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/2309#comment:14>
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