ns, shown by Ivan Djelic:
>
> little-endian, type sizes: int=4 long=8 longlong=8
> cpu: Intel(R) Core(TM) i5 CPU 650 @ 3.20GHz
> calibration: iter=4.9143µs niter=2034 nsamples=200 m=13 t=4
>
> Buffer allocation
ns, shown by Ivan Djelic:
>
> little-endian, type sizes: int=4 long=8 longlong=8
> cpu: Intel(R) Core(TM) i5 CPU 650 @ 3.20GHz
> calibration: iter=4.9143µs niter=2034 nsamples=200 m=13 t=4
>
> Buffer allocation
On Tue, May 29, 2018 at 03:42:07PM -0700, Kees Cook wrote:
> In the quest to remove all stack VLA usage from the kernel[1], this removes
> the on-stack working buffers in favor of pre-allocated working buffers
> (which were already used in other places). Since these routines must
> already be seria
On Thu, Mar 28, 2013 at 10:23:01PM +, Aaron Williams wrote:
> Hi all,
>
> I am trying to clean up our OCTEON NAND flash driver in the Linux kernel
> and enable support for multi-bit ECC using BCH and am having some
> issues. I am able to successfully work with NAND flash that requires 4
> b
On Thu, Oct 11, 2012 at 06:27:13AM +0100, Philip, Avinash wrote:
(...)
> > Another simple strategy could use the fact that you add a 14th zero byte to
> > the 13 BCH bytes for RBL compatibility:
>
> RBL compatibility (14th byte) is applicable only for BCH8 ecc scheme.
>
> So I am planning adding
On Tue, Oct 09, 2012 at 01:36:50PM +0100, Philip, Avinash wrote:
(...)
> > There are at least 2 potential problems when reading an erased page with
> > bitflips:
> >
> > 1. bitflip in data area and no bitflip in spare area (all 0xff)
> > Your code will not perform any ECC correction.
> > UBIFS do
On Fri, Oct 05, 2012 at 09:51:50AM +0100, Philip, Avinash wrote:
> On Thu, Oct 04, 2012 at 15:51:03, Philip, Avinash wrote:
> > On Thu, Oct 04, 2012 at 00:50:45, Ivan Djelic wrote:
> > > On Wed, Oct 03, 2012 at 03:29:49PM +0100, Philip, Avinash wrote:
> > > > EL
On Thu, Oct 04, 2012 at 09:03:42AM +0100, Philip, Avinash wrote:
(...)
> > > +int gpmc_calculate_ecc_bch(int cs, const u_char *dat, u_char *ecc)
> > > +{
> > > + int i, eccbchtsel;
> > > + u32 nsectors, reg, bch_val1, bch_val2, bch_val3, bch_val4;
> > > +
> > > + if (gpmc_ecc_used != cs)
> > > +
On Wed, Oct 03, 2012 at 03:29:49PM +0100, Philip, Avinash wrote:
> ELM module can be used for error correction of BCH 4 & 8 bit. Also
> support read & write page in one shot by adding custom read_page &
> write_page methods. This helps in optimizing code.
>
> New structure member "is_elm_used" is
On Wed, Oct 03, 2012 at 03:29:48PM +0100, Philip, Avinash wrote:
> Add support for BCH ECC scheme to gpmc driver and also enabling multi
> sector read/write. This helps in doing single shot NAND page read and
> write.
>
> ECC engine configurations
> BCH 4 bit support
> 1. write => ECC engine confi
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