Difference between revisions of "User:GNUtoo"

From coreboot
Jump to: navigation, search
(Script2: compare the io access that were too fast)
(How to get semantic IOs)
(One intermediate revision by one user not shown)
Line 52: Line 52:
 
  if __name__ == '__main__':
 
  if __name__ == '__main__':
 
  main(sys.argv)
 
  main(sys.argv)
 +
 +
== How to get semantic IOs ==
 +
In i915tool:
 +
* import your IOs in prettyregs.c
 +
* compile prettyregs.c
 +
* run prettyregs

Revision as of 02:35, 15 April 2013

  • I did the port to the M4A785T-M
  • I've an x60
  • I've an alix.1C

scripts to help getting rid of the vbios of the x60

Script 1: generate the io access for the coreboot driver

#!/usr/local/plan9/bin/rc

by the following line:

#!/opt/plan9/bin/rc
  • create the ssamfix file with:
 ,s/\[ *[0-9]+\..[0-9]+\]//g
 ,s/^ *//g
y/^[RWU]/s/^/M /g
 ,s/\nU/ ;;;UDELAY/g
 ,|uniq -c
 ,s/^ *//g
 ,s/(^[0-9]+) ([MRW])/\2 \1/g
 ,s/"/\\"/g
 ,s/^M ([0-9]+) *(\[.*)/{M, \1, "\2"},/g
 ,s/^M ([0-9]+) *(.*)/{M, \1, "\2"},/g
 ,s/:  */:/g
 ,s/...UDELAY *([0-9]+)/\1/g
 ,s/^([RW]) ([0-9]+) (.*):0x([0-9a-f]+)(.*)/{\1, \2, "", \3, 0x\4, \5},/g
  • run the following commands:
. /etc/profile.d/plan9.sh
cat dmesg| ./ssam  -f ssamfix > foo.c

Script2: compare the io access that were too fast

  • Replace {V,0,}, with {V,7,}, in src/mainboard/vendor/device/i915io.c
  • cat /dev/ttyUSB0 > accesses.txt
  • Use that script against accesses.txt to find the guilty accesses:
#!/usr/bin/env python2
import sys,re
 
def main(args):
	try:
		f = open(args[1],'ro')
	except:
		print args[0], " <file>"

	for line in f:
		if re.match("0x[0-9]*: Got .*, expect .*",line):
			line = line.replace('\r\n',).replace(", expect ",':').replace(": Got ",':')
			split = line.split(':')
			#print split
			if split[1] != split[2]:
				print line
if __name__ == '__main__':
	main(sys.argv)

How to get semantic IOs

In i915tool:

  • import your IOs in prettyregs.c
  • compile prettyregs.c
  • run prettyregs