Vadim Bendebury 38201fe1f7 crossystem: cache vbnv contents to avoid lengthy reads ...

Storing nvram in SPI Flash becomes more and more popular. Retrieving
it takes quite a while due to various flashrom issues. While flashrom
still needs to be improved to minimize its running time, a good speed
up can be achieved by caching the nvram contents in crossystem.

The cache is invalidated each time nvram is written (this could be
optimized by updating the local copy, but probably is not worth the
extra effort).

BRANCH=storm
BUG=chrome-os-partner:33592
TEST=crossystem runs much faster now:
  localhost var # time /var/tmp/crossystem
  . . .
  real    0m1.669s
  user    0m0.790s
  sys     0m0.170s
  localhost var #

Change-Id: Ie4a483efc189257ff58c92bdc39871b917c89727
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/228655
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: David Hendricks <dhendrix@chromium.org>

2014-11-10 20:43:05 +00:00

..

include

crossystem: Change ReadFileInt to take an unsigned int pointer

2014-10-18 01:39:26 +00:00

crossystem.c

crossystem: cache vbnv contents to avoid lengthy reads

2014-11-10 20:43:05 +00:00

file_keys.c

cleanup: remove a couple of unused functions and files

2014-09-12 03:39:46 +00:00

fmap.c

futility: the show command can traverse all file types

2014-09-03 22:49:52 +00:00

host_common.c

Remove dead ECPreamble code

2013-01-25 17:24:57 -08:00

host_key.c

futility: add separate check function for VPbublicKey

2014-08-29 21:56:14 +00:00

host_keyblock.c

Correct some minor compiler warnings

2013-08-25 16:57:28 -07:00

host_misc.c

crossystem: Change ReadFileInt to take an unsigned int pointer

2014-10-18 01:39:26 +00:00

host_signature.c

Add memory leak checking

2013-09-17 23:17:17 +00:00

signature_digest.c

Verified boot wrapper - add stub implementations for host

2011-06-27 13:30:41 -07:00

util_misc.c

Split libvboot_host.a into external and local libraries.

2014-07-09 01:30:48 +00:00