From: Lothar Rubusch <l.rubusch@gmail.com>
To: herbert@gondor.apana.org.au, davem@davemloft.net
Cc: nicolas.ferre@microchip.com, alexandre.belloni@bootlin.com,
claudiu.beznea@tuxon.dev, linux-crypto@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, l.rubusch@gmail.com
Subject: [PATCH 0/5] crypto: atmel-sha204a - read out otp zone
Date: Sat, 27 Apr 2024 00:14:34 +0000 [thread overview]
Message-ID: <20240427001439.12726-1-l.rubusch@gmail.com> (raw)
Read out otp memory zone of this secure eeprom and rng chip. The chip
has an otp zone and data zone, both still not accessed. The otp zone
can be used to store persistently serial numbers or similar, if externally
pre-configured. In any way the Atmel SHA204a needs to be preconfgured and
fuse locked in order to be useful also for the already implemented RNG
functionality. Placing data into the otp zone is optional. If empty, the
chip returns 0xff on all field. The implementation passes the content to
a new sysfs handle to userspace. If the chip is locked or not accessible
no sysfs handle is set.
Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
---
Lothar Rubusch (5):
crypto: atmel-i2 - add missing arg description
crypto: atmel-sha204a - remove unused includes
crypto: atmel-i2c - rename read function
crypto: atmel-sha204a - add reading from otp zone
crypto: atmel-sha204a - provide the otp content
drivers/crypto/atmel-i2c.c | 30 +++++++++++--
drivers/crypto/atmel-i2c.h | 8 +++-
drivers/crypto/atmel-sha204a.c | 77 ++++++++++++++++++++++++++++++----
3 files changed, 102 insertions(+), 13 deletions(-)
--
2.39.2
next reply other threads:[~2024-04-27 0:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-27 0:14 Lothar Rubusch [this message]
2024-04-27 0:14 ` [PATCH 1/5] crypto: atmel-i2 - add missing arg description Lothar Rubusch
2024-04-27 0:14 ` [PATCH 2/5] crypto: atmel-sha204a - remove unused includes Lothar Rubusch
2024-05-03 10:42 ` Herbert Xu
2024-04-27 0:14 ` [PATCH 3/5] crypto: atmel-i2c - rename read function Lothar Rubusch
2024-04-27 0:14 ` [PATCH 4/5] crypto: atmel-sha204a - add reading from otp zone Lothar Rubusch
2024-04-27 0:14 ` [PATCH 5/5] crypto: atmel-sha204a - provide the otp content Lothar Rubusch
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