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CAAM and imx-scc both have their own Kconfig symbols, so
CONFIG_CRYPTO_HW only serves the purpose of hiding a two entry
menu behind it. Let's just get rid of it. This has the added benefit of
being able to use imply on the drivers.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20230307093426.1551193-4-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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"GPL-2.0-only" was introduced in SPDX 2.0, and the old identifier
"GPL-2.0" is now considered deprecated; see <https://spdx.org/licenses>.
Fixes: 28f4a6a4df76f0f1581d (2021-10-30, "drivers: add missing SPDX-License-Identifier")
Signed-off-by: Roland Hieber <rhi@pengutronix.de>
Link: https://lore.barebox.org/20211117113851.2022669-2-rhi@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds the suitable SPDX-License-Identifier to all files in drivers/
that previously lacked one.
To aid manual inspection, following heuristics can be used:
* No changes outside of comments/whitespace:
git show -U0 HEAD | rg -v '^(@@|diff|index)|[-+]([-+]|//|#|[\s/]\*)'
* -or-later come in pairs:
git show --inter-hunk-context=19 HEAD | \
perl -0777 -F'/^@/gm' -ne 'for (@F) { @m = /later/g; print if @m & 1 }'
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20211030175632.2276077-4-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The Security Controller (SCC) is found on (at least) i.MX25 SoCs.
It is not a crypto engine in the usual sense. The only supported
algorithm in hardware is 3DES and the key is not configurable, but
is fused in the hardware.
The SCC can be handed some block of data in the red memory space
and it will return the encrypted data in the black memory space and
vice versa.
The API for this driver are the functions
- mxc_scc_cbc_des_encrypt
- mxc_scc_cbc_des_decrypt
Along with this driver a blobgen implementation is provided.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Based on Linux commit 8636a1f9677db4f883f29a072f401303acfc2edd
This will be needed when you sync Kconfig with Linux 5.0 or later.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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These should be fixed before the Kconfig resync because Linux 4.16 or
later warns it.
Refer to Linux commit 1b9eda2e4892 ("kconfig: Warn if help text is
blank").
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Add the i.MX6 crypto core CAAM with support for the random number
generator.
The core itself works with jobrings in which descriptors can be
queued/dequeued for processing. Depending on descriptor type
the CAAM unit then either produces random numbers or decrypts/encrypts
data.
The code is based on the Linux v4.1 driver of the same name
without all the crypto/hashing components.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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