mirror of
git://projects.qi-hardware.com/wernermisc.git
synced 2024-12-24 20:32:24 +02:00
479 lines
18 KiB
Plaintext
479 lines
18 KiB
Plaintext
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--- Tue 2011-09-06 ------------------------------------------------------------
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Running "loop": power-cycle, sleep 2 s, jtag-boot, sleep 70 seconds,
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which is enough to boot into FN and render "The Tunnel" for a moment,
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then power-cycle again (off-time is 5 s).
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Note that the test loop is "open-loop" and will cycle also past any
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problems. The first time a corrupt standby (or any other issue) is
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observed may therefore be well after the actual event.
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1: started around 11:53 (M1 configuration is original, without locking)
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(around 500) visually checked boot process; standby was reached normally
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--- Wed 2011-09-07 ------------------------------------------------------------
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645: neocon stopped working (around 01:58)
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666: detected neocon failure at run 666: restarted neocon; urjtag failed
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this cycle; back to normal at 667
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684: checked LEDs again (first time since ~500) and found that standby
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may be failing. stopping test at 685 (around 02:50) for
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investigation.
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Downloaded the standby bitstream:
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wget https://raw.github.com/milkymist/scripts/master/scripts/reflash_m1.sh
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chmod 755 reflash_m1.sh
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./reflash_m1.sh --read-flash
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Found two corruptions in the standby bitstream:
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diff -u <(hexdump -C standby.fpg) <(hexdump -C /home/root/.qi/milkymist/read-flash/2011...)
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-00000080 00 00 4c 83 00 00 4c 87 00 00 cc 85 d8 47 cc 43 |..L...L......G.C|
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+00000080 00 00 4c 83 00 00 4c 87 00 00 c4 80 d8 47 cc 43 |..L...L......G.C|
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-00002840 00 08 cc 26 00 00 00 00 00 00 00 00 0c 44 00 98 |...&.........D..|
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+00002840 00 00 cc 26 00 00 00 00 00 00 00 00 0c 44 00 98 |...&.........D..|
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CRC-checked the partitions:
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git clone git://github.com/milkymist/milkymist
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cd milkymist/tools/
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gcc -Wall -I. -o flterm flterm.c
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wget http://milkymist.org/updates/current/for-rc3/boot.4e53273.bin
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./flterm --port /dev/ttyUSB0 --kernel boot.4e53273.bin
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serialboot
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a
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only standby.fpg failed the CRC check
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Reflashed the standby bitstream:
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wget http://milkymist.org/updates/2011-07-13/for-rc3/fjmem.bit
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(or http://milkymist.org/updates/fjmem.bit.bz2)
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wget http://milkymist.org/updates/current/standby.fpg
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jtag
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cable milkymist
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detect
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instruction CFG_OUT 000100 BYPASS
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instruction CFG_IN 000101 BYPASS
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pld load fjmem.bit
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initbus fjmem opcode=000010
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frequency 6000000
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detectflash 0
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endian big
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flashmem 0 standby.fpg noverify
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M1 enters standby normally again.
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Running "loop2": power-cycle, sleep 2 s, jtag-boot, sleep 10 seconds,
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which is enough to begin (but not finish) booting RTEMS, then
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power-cycle again (off-time is 5 s).
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1: started around 05:01. Observed until about 200-300 (06:00-06:30)
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that standby was okay.
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~730 (08:48): observed that standby didn't load anymore (note: due to
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a bug in labsw, power is not turned on in about 5-10% of the cycles,
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so the real cycle count should be around 650-700.)
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Standby bitstream difference:
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-00000080 00 00 4c 83 00 00 4c 87 00 00 cc 85 d8 47 cc 43 |..L...L......G.C|
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+00000080 00 00 00 00 00 00 4c 87 00 00 cc 85 d8 47 cc 43 |......L......G.C|
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Reflashed standby and locked the NOR. Testing with loop2 again.
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1 (09:18): started
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... continuing through the night ...
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--- Thu 2011-09-08 ------------------------------------------------------------
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3483 (03:18): standby is good so far
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4325 (07:40): manually ended test. Standby is still good, but starting
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with cycle 3704, booting RTEMS failed with
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I: Booting from flash...
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I: Loading 1889692 bytes from flash...
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E: CRC failed (expected aa12a56a, got 68ec25e6)
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A CRC check yielded:
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Images CRC:
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Checking : standby.fpg CRC passed (got c58e8905)
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Checking : soc-rescue.fpg CRC passed (got 30dcc535)
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Checking : bios-rescue.bin(CRC) CRC passed (got c78353fa)
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Checking : splash-rescue.raw CRC passed (got e8ff824f)
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Checking : flickernoise.fbi(rescue)(CRC) CRC passed (got aa12a56a)
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Checking : soc.fpg CRC passed (got 3a31e737)
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Checking : bios.bin(CRC) CRC passed (got 86e23684)
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Checking : splash.raw CRC passed (got 978f860c)
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Checking : flickernoise.fbi(CRC) CRC failed (expected aa12a56a, got 68ec25e6)
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Read back the FlickerNoise partition with
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readmem 0x920000 0x0400000 fn.bin
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Compare with the original:
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wget http://www.milkymist.org/updates/2011-07-13/flickernoise.fbi
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md5sum flickernoise.fbi
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5b7367e71bda306b080bde124615859b flickernoise.fbi
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diff -u <(hexdump -C flickernoise.fbi) <(hexdump -C fn.bin)
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...
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-0008a380 28 43 00 00 34 64 00 01 58 44 00 00 5c 60 00 1e |(C..4d..XD..\`..|
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+0008a380 28 43 00 00 00 00 00 01 58 44 00 00 5c 60 00 1e |(C......XD..\`..|
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...
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Recovered the FN partition and unlocked the NOR:
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flashmem 0x920000 flickernoise.fbi noverify
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unlockflash 0 55
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New test series with script loop4. This differs from loop2 in that
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it uses "pld reconfigure" to return to standby, instead of
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power-cycling. If we still observe corruption with this test, then
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a software problem would be to blame.
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1 (09:11): started
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2509 (19:33): standby looks good
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All CRC checks pass. Verified that NOR was unlocked:
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(load fjmem, etc.)
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peek 0 # show old value
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poke 0 0x40 0 0x0000 # Word Program
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peek 0 # read back status (0x80 if okay, 0x92 if locked)
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poke 0 0xff # Read Array (switch back to normal operation)
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Took labsw offline to analyze occasional failure to switch. Failure
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was difficult to reproduce. Also opened labsw to tighten a loose nut.
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Afterwards (Friday run), labsw showed much fewer switch failures.
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--- Fri 2011-09-09 ------------------------------------------------------------
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New test with script "loop5". This time, we only power cycle but don't
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try to boot out of standby. The purpose of this test is to confirm that
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NOR corruption does not occur when powering down while in standby.
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1 (11:04): started
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200 (11:28:): stopped to issue "unlockflash 0 105" to make sure all of
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the NOR is unlocked, just in case
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Also checked CRCs. All is well.
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1 (11:31): started
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2637 (16:53): stopped. standby looks good.
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All partitions pass the CRC check.
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Repeating loop2 to make sure the NOR corruption hasn't disappeared for
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an unrelated reason. System is connected to oscilloscope monitoring the
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M1 DC in voltage. This connection provides grounding of DC in.
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1 (16:56): started
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--- Sat 2011-09-10 ------------------------------------------------------------
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2428 (04:57): standby still okay
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2440 (05::01): disconnected oscilloscope
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2463 (05:08): stopped test
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All partitions pass the CRC check. Read back the standby partition and
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also found no corruption in bitwise comparison. Furthermore, the unused
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area showed the expected 0xffff pattern.
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1 (05:14): restarted test, without oscilloscope.
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2213 (16:11): standby still okay
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All partitions pass the CRC check. Unused area of standby shows 0xffff.
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Prepared new test (loop7): like loop2, but make a "false start" of
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turning on both channels and immediately turn them off again, wait 16
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seconds, and only then power up properly. This would roughly correspond
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to labsw failing to turn on, as observed in the test runs in which NOR
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corruption occurred.
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1 (16:27): started loop7 test
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... continuing through the night ...
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--- Sun 2011-09-11 ------------------------------------------------------------
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2001 (11:58): standby okay
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All partitions pass the CRC check. Unused area of standby shows 0xffff.
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Confirmed writability of NOR at address 0x80000 and at address 0.
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Instructions used at address 0x80000:
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jtag> peek 0x80000
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URJ_BUS_READ(0x00080000) = 0xFFFF (65535)
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jtag> poke 0x80000 0x40 0x80000 0xffee
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jtag> peek 0x80000
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URJ_BUS_READ(0x00080000) = 0x0080 (128)
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jtag> poke 0 0xff
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jtag> peek 0x80000
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URJ_BUS_READ(0x00080000) = 0xFFEE (65518)
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--- Mon 2011-09-12 ------------------------------------------------------------
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loop8 is similar to loop7. It increases the "false on" period to 10 ms,
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which is enough to make the M1 power LED flash. It reduces the cool off
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period after the false on.
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1 (08:11): started loop8 test
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2120 (19:50): standby okay. All partitions pass CRC check.
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Going back to the beginning. Test loop (1) runs all the way to rendering.
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Maybe it is necessary after all ...
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1 (19:52): started loop (1) test (serial console logged in file log9)
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70 (21:21): standby okay
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--- Tue 2011-09-13 ------------------------------------------------------------
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223 (00:39): standby failure
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Several corruptions were found:
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-00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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+00000000 00 00 00 00 ff ff ff ff ff ff ff ff ff ff ff ff |................|
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...
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00005510 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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*
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+00005550 ff ff ff ff ff ff d6 10 ff ff ff ff ff ff ff ff |................|
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+00005560 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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+*
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No CRC errors in other partitions.
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1 (00:50): restored standby partition. started loop again (log9.1)
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613 (14:04): standby okay
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639 (14:38): standby failure. Other CRCs okay. Corruption:
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...
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-00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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+00000000 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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...
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-000014b0 00 c0 cc 26 00 00 00 00 00 00 00 00 0c 44 00 30 |...&.........D.0|
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+000014b0 00 00 cc 26 00 00 00 00 00 00 00 00 0c 44 00 30 |...&.........D.0|
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...
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1 (14:46): restored and verified standby partition. started loop again (log9.2)
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23 (15:15): ok
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117 (17:16): standby failure. Other CRCs okay. Corruption:
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...
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000050e0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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*
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+00005140 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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...
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1 (17:23): restored and verified standby partition. started loop again (log9.3)
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1 (17:30): restarted after X crash
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... continuing through the night ...
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--- Wed 2011-09-14 ------------------------------------------------------------
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... continuing through the whole day ...
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--- Thu 2011-09-15 ------------------------------------------------------------
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1493 (01:46): standby okay
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1584 (03:44): standby failure. CRC failure in standby and soc-rescue.
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Corruption in standby:
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-00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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+00000000 ff ff ff ff 00 00 ff ff ff ff ff ff ff ff ff ff |................|
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...
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-00000a00 00 98 cc 26 00 00 00 00 00 00 00 00 0c 44 00 a0 |...&.........D..|
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+00000a00 00 00 cc 26 00 00 00 00 00 00 00 00 0c 44 00 a0 |...&.........D..|
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...
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Read back soc-rescue:
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jtag> readmem 0x0A0000 0x0180000 soc-rescue.bin
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Corruption:
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-00020460 50 00 50 00 00 0f 55 5f ff ff dd ee 00 00 00 00 |P.P...U_........|
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+00020460 00 00 50 00 00 0f 55 5f ff ff dd ee 00 00 00 00 |..P...U_........|
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Restore standby, then soc-rescue:
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wget http://milkymist.org/updates/current/soc-rescue.fpg
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jtag> flashmem 0xA0000 soc-rescue.fpg noverify
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1 (04:00): verified CRCs. started loop again (log9.4)
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750 (20:12): standby okay. Interrupted to dump first 256 bytes of NOR with
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script "peek". No differences found.
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752 (20:13): resumed. standby okay
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... continuing into the night ...
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--- Fri 2011-09-16 ------------------------------------------------------------
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980 (01:10): standby okay. Interrupted to run "peek". Found non-fatal damage:
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-00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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+00000000 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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981 (01:12): resumed. standby okay.
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1121 (04:13): standby failed. Other CRCs okay. Corruptions:
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-00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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+00000000 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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...
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-00000800 00 08 cc 26 00 00 00 00 00 00 00 00 0c 44 00 20 |...&.........D. |
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+00000800 00 00 cc 26 00 00 00 00 00 00 00 00 0c 44 00 20 |...&.........D. |
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...
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-00001000 00 c8 cc 26 00 00 00 00 00 00 00 00 0c 44 00 90 |...&.........D..|
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+00001000 00 00 cc 26 00 00 00 00 00 00 00 00 0c 44 00 90 |...&.........D..|
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1 (04:20): restored and verified standby. started loop again (log9.5)
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516 (15:28): standby okay. Interrupted to "peek". No differences found.
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517 (15:29): resumed. standby okay.
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597 (17:13): standby failed. Other CRCs okay. Corruption:
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-00001160 00 d0 cc 26 00 00 00 00 00 00 00 00 0c 44 00 50 |...&.........D.P|
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+00001160 00 00 cc 26 00 00 00 00 00 00 00 00 0c 44 00 50 |...&.........D.P|
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1 (17:21): restored and verified standby. started loop again (log9.6)
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... continuing into the night ...
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--- Sat 2011-09-17 ------------------------------------------------------------
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352 (00:57): standby okay
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422 (02:27): standby failed. Other CRCs okay. Corruption:
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-00002000 00 70 cc 26 00 00 00 00 00 00 00 00 0c 44 00 28 |.p.&.........D.(|
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+00002000 00 00 cc 26 00 00 00 00 00 00 00 00 0c 44 00 28 |...&.........D.(|
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1 (02:36): restored and verified standby. started loop again (log9.7)
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501 (13:25): standby okay. Interrupted to run "peek". Found non-fatal damage:
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-00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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+00000000 ff ff ff ff ff ff 81 4c ff ff ff ff ff ff ff ff |.......L........|
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1 (13:26): restarted (oops). standby okay. (still log9.7)
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473 (23:39) standby okay
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... continuing into the next day ...
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--- Sun 2011-09-18 ------------------------------------------------------------
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500 (00:14): standby failed. CRC failed in flickernoise-rescue, too.
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Corruptions in standby:
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-00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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+00000000 ff ff ff ff 00 00 81 4c ff ff ff ff ff ff ff ff |.......L........|
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...
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-00002ff0 00 20 cc 26 00 00 00 00 00 00 00 00 0c 44 00 78 |. .&.........D.x|
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+00002ff0 00 20 c4 04 00 00 00 00 00 00 00 00 0c 44 00 78 |. ...........D.x|
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Corruption in flickernoise-rescue:
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-00120000 ba 80 08 00 34 10 00 00 e0 00 00 1b 40 c8 00 0a |....4.......@...|
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+00120000 00 00 08 00 34 10 00 00 e0 00 00 1b 40 c8 00 0a |....4.......@...|
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1 (00:36): restored and verified everything. started loop again (log9.8)
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233 (05:38): standby okay
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260 (06:13): standby failed. Other CRCs okay. Corruption:
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-000014b0 00 c0 cc 26 00 00 00 00 00 00 00 00 0c 44 00 30 |...&.........D.0|
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||
|
+000014b0 00 00 cc 26 00 00 00 00 00 00 00 00 0c 44 00 30 |...&.........D.0|
|
||
|
|
||
|
1 (06:17): restored and verified standby. started loop again (log9.9)
|
||
|
3 (06:20): standby okay
|
||
|
75 (07:53): ok
|
||
|
82 (08:02): standby failed. Other CRCs okay. Corruption:
|
||
|
|
||
|
00001500 00 10 cc 26 00 00 00 00 00 00 00 00 0c 44 00 30 |...&.........D.0|
|
||
|
-00001510 00 90 cc 26 00 00 00 00 00 00 00 00 0c 44 00 30 |...&.........D.0|
|
||
|
+*
|
||
|
|
||
|
1 (08:19): restored and verified standby. started loop again (log9.10)
|
||
|
171 (12:00): standby okay
|
||
|
194 (12:30): standby failed. Other CRCs okay. Corruptions:
|
||
|
|
||
|
-00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
|
||
|
+00000000 ff ff 28 40 ff ff ff ff ff ff ff ff ff ff ff ff |..(@............|
|
||
|
...
|
||
|
-00000440 00 88 cc 26 00 00 00 00 00 00 00 00 0c 44 00 40 |...&.........D.@|
|
||
|
+00000440 00 00 cc 26 00 00 00 00 00 00 00 00 0c 44 00 40 |...&.........D.@|
|
||
|
|
||
|
1 (12:33): restored and verified standby. started loop again (log9.11)
|
||
|
162 (16:03): standby okay
|
||
|
168 (16:25): standby failed. Other CRCs okay. Corruption:
|
||
|
|
||
|
-00002000 00 70 cc 26 00 00 00 00 00 00 00 00 0c 44 00 28 |.p.&.........D.(|
|
||
|
+00002000 00 00 cc 26 00 00 00 00 00 00 00 00 0c 44 00 28 |...&.........D.(|
|
||
|
|
||
|
1 (16:27): restored and verified standby. started loop again (log9.12)
|
||
|
341 (23:49): standby okay
|
||
|
... continuing into the next day ...
|
||
|
|
||
|
--- Mon 2011-09-19 ------------------------------------------------------------
|
||
|
|
||
|
359 (00:12): standby okay
|
||
|
582 (05:02): standby okay. Interrupted to "peek". No differences found.
|
||
|
583 (05:04): resumed. standby okay.
|
||
|
1023 (14:36): standby okay. Interrupted to "peek". No differences found.
|
||
|
1024 (14:37): resumed. standby okay.
|
||
|
1452 (23:53): standby okay
|
||
|
... continuing into the next day ...
|
||
|
|
||
|
--- Tue 2011-09-20 ------------------------------------------------------------
|
||
|
|
||
|
1520 (01:22): standby okay. Interrupted to "peek". No differences found.
|
||
|
1521 (01:23): resumed. standby okay.
|
||
|
2013 (12:03): standby okay. Interrupted to "peek". No differences found.
|
||
|
2014 (12:04): resumed. standby okay.
|
||
|
2452 (21:33): standby okay
|
||
|
... continuing into the next day ...
|
||
|
|
||
|
--- Wed 2011-09-21 ------------------------------------------------------------
|
||
|
|
||
|
2602 (00:48): standby okay
|
||
|
2603 (00:49): standby okay. Interrupted to "peek". No differences found.
|
||
|
2604 (00:52): resumed. standby okay.
|
||
|
2999 (09:25): standby okay. Interrupted to "peek". No differences found.
|
||
|
3000 (09:27): resumed. standby okay.
|
||
|
3488 (20:01): standby okay. Interrupted to "peek". No differences found.
|
||
|
3489 (20:02): resumed. standby okay.
|
||
|
3561 (21:36): standby okay
|
||
|
... continuing into the next day ...
|
||
|
|
||
|
--- Thu 2011-09-22 ------------------------------------------------------------
|
||
|
|
||
|
3673 (00:01): standby okay
|
||
|
3972 (06:30): standby okay. Interrupted to "peek". No differences found.
|
||
|
3973 (06:32): resumed. standby okay.
|
||
|
4000 (07:08): standby okay. giving up.
|
||
|
|
||
|
|
||
|
Summary of recent experiments (all with "loop"):
|
||
|
|
||
|
Last cycle ob- First cycle ob- Non-fatal Offsets of corrupted
|
||
|
served without served with corruption words in standby
|
||
|
fatal corruption fatal corr. (at end)
|
||
|
--------------- --------------- ------------ -------------------------------
|
||
|
70 ( 1h29) 223 ( 4h47) ? 0, 2, 0x5556
|
||
|
613 (13h14) 639 (13h48) ? 0, 0x14b0
|
||
|
23 ( 0h29) 117 ( 2h30) ? 0x5140
|
||
|
1493 (32h16) 1584 (34h14) ? 4, 0xa00; soc-rescue 0x20460
|
||
|
981 (21h12) 1121 (24h13) 980 (21h10) 0, 0x800, 0x1000
|
||
|
517 (11h09) 597 (12h53) - 0x1160
|
||
|
352 ( 7h36) 422 ( 9h06) - 0x2000
|
||
|
973 (21h03) 1002 (22h22) 501 (10h50) 6, 0x2ff2; fn-rescue 0x120000
|
||
|
233 ( 5h02) 260 ( 5h37) - 0x14b0
|
||
|
75 ( 1h36) 82 ( 1h45) - 0x1510
|
||
|
171 ( 3h41) 194 ( 4h11) - 2, 0x440
|
||
|
162 ( 3h30) 168 ( 3h52) - 0x2000
|