diff options
| author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2020-03-19 19:12:32 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-03-30 03:50:50 +0300 |
| commit | 358ba762d9f1d4ba99ab31ef12bc28014b22f4c9 (patch) | |
| tree | 0936b8c327d7c7c465cd19424908376eee572b68 /drivers/crypto/caam/regs.h | |
| parent | 0544cb75bd7df357c1758b760ecc7709125c139a (diff) | |
| download | linux-358ba762d9f1d4ba99ab31ef12bc28014b22f4c9.tar.xz | |
crypto: caam - enable prediction resistance in HRWNG
Instantiate CAAM RNG with prediction resistance enabled to improve its
quality (with PR on DRNG is forced to reseed from TRNG every time
random data is generated).
Management Complex firmware with version lower than 10.20.0
doesn't provide prediction resistance support. Consider this
and only instantiate rng when mc f/w version is lower.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Andrei Botila <andrei.botila@nxp.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Horia Geantă <horia.geanta@nxp.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Iuliana Prodan <iuliana.prodan@nxp.com>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-imx@nxp.com
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/caam/regs.h')
| -rw-r--r-- | drivers/crypto/caam/regs.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h index c191e8fd0fa7..0f810bc13b2b 100644 --- a/drivers/crypto/caam/regs.h +++ b/drivers/crypto/caam/regs.h @@ -524,9 +524,11 @@ struct rng4tst { u32 rsvd1[40]; #define RDSTA_SKVT 0x80000000 #define RDSTA_SKVN 0x40000000 +#define RDSTA_PR0 BIT(4) +#define RDSTA_PR1 BIT(5) #define RDSTA_IF0 0x00000001 #define RDSTA_IF1 0x00000002 -#define RDSTA_IFMASK (RDSTA_IF1 | RDSTA_IF0) +#define RDSTA_MASK (RDSTA_PR1 | RDSTA_PR0 | RDSTA_IF1 | RDSTA_IF0) u32 rdsta; u32 rsvd2[15]; }; |