Home | History | Annotate | Download | only in s3c2xx0
History log of /src/sys/arch/arm/s3c2xx0/sscom_var.h
RevisionDateAuthorComments
 1.14  14-Apr-2015  riastradh Include <sys/rndsource.h> where it is actually used.

I had removed <sys/rnd.h> from files that didn't mention anything of
the rnd(9) API. But they included other files which assumed
<sys/rnd.h> had already been included.
 1.13  14-Mar-2014  matt branches: 1.13.6;
Cleanup sscom to make more SoC invariant
 1.12  27-Oct-2012  chs branches: 1.12.2;
split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.
 1.11  02-Feb-2012  tls branches: 1.11.6;
Entropy-pool implementation move and cleanup.

1) Move core entropy-pool code and source/sink/sample management code
to sys/kern from sys/dev.

2) Remove use of NRND as test for presence of entropy-pool code throughout
source tree.

3) Remove use of RND_ENABLED in device drivers as microoptimization to
avoid expensive operations on disabled entropy sources; make the
rnd_add calls do this directly so all callers benefit.

4) Fix bug in recent rnd_add_data()/rnd_add_uint32() changes that might
have lead to slight entropy overestimation for some sources.

5) Add new source types for environmental sensors, power sensors, VM
system events, and skew between clocks, with a sample implementation
for each.

ok releng to go in before the branch due to the difficulty of later
pullup (widespread #ifdef removal and moved files). Tested with release
builds on amd64 and evbarm and live testing on amd64.
 1.10  30-Jan-2012  nisimura Add FriendlyARM Mini2440 support.
- new code for Samsung S3C2440 SoC.
- update for other S3C2xx0.
This port was done by Paul Fleischer.
 1.9  19-Nov-2011  tls branches: 1.9.2;
First step of random number subsystem rework described in
<20111022023242.BA26F14A158@mail.netbsd.org>. This change includes
the following:

An initial cleanup and minor reorganization of the entropy pool
code in sys/dev/rnd.c and sys/dev/rndpool.c. Several bugs are
fixed. Some effort is made to accumulate entropy more quickly at
boot time.

A generic interface, "rndsink", is added, for stream generators to
request that they be re-keyed with good quality entropy from the pool
as soon as it is available.

The arc4random()/arc4randbytes() implementation in libkern is
adjusted to use the rndsink interface for rekeying, which helps
address the problem of low-quality keys at boot time.

An implementation of the FIPS 140-2 statistical tests for random
number generator quality is provided (libkern/rngtest.c). This
is based on Greg Rose's implementation from Qualcomm.

A new random stream generator, nist_ctr_drbg, is provided. It is
based on an implementation of the NIST SP800-90 CTR_DRBG by
Henric Jungheim. This generator users AES in a modified counter
mode to generate a backtracking-resistant random stream.

An abstraction layer, "cprng", is provided for in-kernel consumers
of randomness. The arc4random/arc4randbytes API is deprecated for
in-kernel use. It is replaced by "cprng_strong". The current
cprng_fast implementation wraps the existing arc4random
implementation. The current cprng_strong implementation wraps the
new CTR_DRBG implementation. Both interfaces are rekeyed from
the entropy pool automatically at intervals justifiable from best
current cryptographic practice.

In some quick tests, cprng_fast() is about the same speed as
the old arc4randbytes(), and cprng_strong() is about 20% faster
than rnd_extract_data(). Performance is expected to improve.

The AES code in src/crypto/rijndael is no longer an optional
kernel component, as it is required by cprng_strong, which is
not an optional kernel component.

The entropy pool output is subjected to the rngtest tests at
startup time; if it fails, the system will reboot. There is
approximately a 3/10000 chance of a false positive from these
tests. Entropy pool _input_ from hardware random numbers is
subjected to the rngtest tests at attach time, as well as the
FIPS continuous-output test, to detect bad or stuck hardware
RNGs; if any are detected, they are detached, but the system
continues to run.

A problem with rndctl(8) is fixed -- datastructures with
pointers in arrays are no longer passed to userspace (this
was not a security problem, but rather a major issue for
compat32). A new kernel will require a new rndctl.

The sysctl kern.arandom() and kern.urandom() nodes are hooked
up to the new generators, but the /dev/*random pseudodevices
are not, yet.

Manual pages for the new kernel interfaces are forthcoming.
 1.8  01-Jul-2011  dyoung branches: 1.8.2;
#include <sys/bus.h> instead of <machine/bus.h>.
 1.7  06-Mar-2006  rjs Remove SET/CLR/ISSET macros.
 1.6  11-Dec-2005  christos branches: 1.6.4; 1.6.6; 1.6.8;
merge ktrace-lwp.
 1.5  04-Aug-2003  bsh branches: 1.5.16;
Samsung's S3C2800 and S3C24[10]0 CPUs have same built-in UART block,
but there are very small diffs in register definitions. For that, add
new options SSCOM_S3C{2800,2410,2400} and include appropriate
s3c*reg.h.

SSCOM_S3C2410 is also needed for interrupt controller differences.
 1.4  31-Jul-2003  bsh split sscomintr() to sscomtxintr() and sscomrxintr().
 1.3  23-Jun-2003  martin branches: 1.3.2;
Make sure to include opt_foo.h if a defflag option FOO is used.
 1.2  13-May-2003  bsh + fix a bug to think FIFO full as FIFO empty.

+ on rx buffer overflow case, disable error interrupt as wel as rx
interrupt.

+ FIFO is always enabled.
 1.1  20-Nov-2002  bsh branches: 1.1.2;
Samsung S3C2800 is a CPU with ARM920T core.
 1.1.2.2  11-Dec-2002  thorpej Sync with HEAD.
 1.1.2.1  20-Nov-2002  thorpej file sscom_var.h was added on branch nathanw_sa on 2002-12-11 05:53:20 +0000
 1.3.2.3  21-Sep-2004  skrll Fix the sync with head I botched.
 1.3.2.2  18-Sep-2004  skrll Sync with HEAD.
 1.3.2.1  03-Aug-2004  skrll Sync with HEAD
 1.5.16.1  21-Jun-2006  yamt sync with head.
 1.6.8.1  13-Mar-2006  yamt sync with head.
 1.6.6.1  22-Apr-2006  simonb Sync with head.
 1.6.4.1  09-Sep-2006  rpaulo sync with head
 1.8.2.3  22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.8.2.2  30-Oct-2012  yamt sync with head
 1.8.2.1  17-Apr-2012  yamt sync with head
 1.9.2.1  18-Feb-2012  mrg merge to -current.
 1.11.6.3  03-Dec-2017  jdolecek update from HEAD
 1.11.6.2  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.11.6.1  20-Nov-2012  tls Resync to 2012-11-19 00:00:00 UTC
 1.12.2.1  18-May-2014  rmind sync with head
 1.13.6.1  06-Jun-2015  skrll Sync with HEAD

RSS XML Feed