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config CRYPTO_DEV_FSL_CAAM
tristate "Freescale CAAM-Multicore driver backend"
depends on FSL_SOC || ARCH_MXC
help
Enables the driver module for Freescale's Cryptographic Accelerator
and Assurance Module (CAAM), also known as the SEC version 4 (SEC4).
This module adds a job ring operation interface, and configures h/w
to operate as a DPAA component automatically, depending
on h/w feature availability.
To compile this driver as a module, choose M here: the module
will be called caam.
config CRYPTO_DEV_FSL_CAAM_RINGSIZE
int "Job Ring size"
depends on CRYPTO_DEV_FSL_CAAM
range 2 9
default "9"
help
Select size of Job Rings as a power of 2, within the
range 2-9 (ring size 4-512).
Examples:
2 => 4
3 => 8
4 => 16
5 => 32
6 => 64
7 => 128
8 => 256
9 => 512
config CRYPTO_DEV_FSL_CAAM_INTC
bool "Job Ring interrupt coalescing"
depends on CRYPTO_DEV_FSL_CAAM
default y
help
Enable the Job Ring's interrupt coalescing feature.
config CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD
int "Job Ring interrupt coalescing count threshold"
depends on CRYPTO_DEV_FSL_CAAM_INTC
range 1 255
default 255
help
Select number of descriptor completions to queue before
raising an interrupt, in the range 1-255. Note that a selection
of 1 functionally defeats the coalescing feature, and a selection
equal or greater than the job ring size will force timeouts.
config CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD
int "Job Ring interrupt coalescing timer threshold"
depends on CRYPTO_DEV_FSL_CAAM_INTC
range 1 65535
default 2048
help
Select number of bus clocks/64 to timeout in the case that one or
more descriptor completions are queued without reaching the count
threshold. Range is 1-65535.
config CRYPTO_DEV_FSL_CAAM_CRYPTO_API
# Forced to non-module for current ARM branch, until CONFIG_OF possible
# tristate "Register algorithm implementations with the Crypto API"
boolean "Register algorithm implementations with the Crypto API"
depends on CRYPTO_DEV_FSL_CAAM
default y
select CRYPTO_ALGAPI
select CRYPTO_AUTHENC
help
Selecting this will offload crypto for users of the
scatterlist crypto API (such as the linux native IPSec
stack) to the SEC4 via job ring.
To compile this as a module, choose M here: the module
will be called caamalg.
config CRYPTO_DEV_FSL_CAAM_AHASH_API
# Forced to non-module for current ARM branch, until CONFIG_OF possible
# tristate "Register hash algorithm implementations with Crypto API"
boolean "Register hash algorithm implementations with Crypto API"
depends on CRYPTO_DEV_FSL_CAAM
default y
select CRYPTO_AHASH
help
Selecting this will offload ahash for users of the
scatterlist crypto API to the SEC4 via job ring.
To compile this as a module, choose M here: the module
will be called caamhash.
config CRYPTO_DEV_FSL_CAAM_RNG_API
# Forced to non-module for current ARM branch, until CONFIG_OF possible
# tristate "Register caam device for hwrng API"
boolean "Register caam device for hwrng API"
depends on CRYPTO_DEV_FSL_CAAM
default y
select CRYPTO_RNG
help
Selecting this will register the SEC4 hardware rng to
the hw_random API for suppying the kernel entropy pool.
To compile this as a module, choose M here: the module
will be called caamrng.
config CRYPTO_DEV_FSL_CAAM_RNG_TEST
boolean "Test caam rng"
depends on CRYPTO_DEV_FSL_CAAM_RNG_API
default n
help
Selecting this will enable self-test for caam rng.
config CRYPTO_DEV_FSL_CAAM_SM
boolean "CAAM Secure Memory / Keystore API (EXPERIMENTAL)"
default n
help
Enables use of a prototype kernel-level Keystore API with CAAM
Secure Memory for insertion/extraction of bus-protected secrets.
config CRYPTO_DEV_FSL_CAAM_SM_SLOTSIZE
int "Size of each keystore slot in Secure Memory"
depends on CRYPTO_DEV_FSL_CAAM_SM
range 5 9
default 7
help
Select size of allocation units to divide Secure Memory pages into
(the size of a "slot" as referenced inside the API code).
Established as powers of two.
Examples:
5 => 32 bytes
6 => 64 bytes
7 => 128 bytes
8 => 256 bytes
9 => 512 bytes
config CRYPTO_DEV_FSL_CAAM_SM_TEST
boolean "CAAM Secure Memory - Keystore Test/Example (EXPERIMENTAL)"
depends on CRYPTO_DEV_FSL_CAAM_SM
default n
help
Example thread to exercise the Keystore API and to verify that
stored and recovered secrets can be used for general purpose
encryption/decryption.
config CRYPTO_DEV_FSL_CAAM_SECVIO
boolean "CAAM/SNVS Security Violation Handler (EXPERIMENTAL)"
depends on CRYPTO_DEV_FSL_CAAM
default n
help
Enables installation of an interrupt handler with registrable
handler functions which can be specified to act on the consequences
of a security violation.
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