On 06/28/2017 02:53 PM, Tom Lendacky wrote:
In this I am leaving the top level config as-is and adding
CONFIG_CRYPTO_DEV_SP_CCP to enable the CCP device support inside the SP device
driver.
[*] Support for AMD Secure Processor
<M> Secure Processor device driver
<M> Encryption and hashing offload support
-*- Cryptographic Coprocessor device
I think the "Encryption and hashing offload support" should be indented
under "Cryptographic Coprocessor device" since it is a function of the
CCP and not the SP. Not sure if we can remove a level of menu somehow,
something to explore.
Good point, the updated Kconfig looks like this and let me know it works.
[*] Support for AMD Secure Processor
<M> Secure Processor device driver
[*] Cryptographic Coprocessor device
<M> Encryption and hashing offload support
# cat drivers/crypto/ccp/Kconfig
config CRYPTO_DEV_CCP_DD
tristate "Secure Processor device driver"
default m
help
Provides AMD Secure Processor device driver.
If you choose 'M' here, this module will be called ccp.
config CRYPTO_DEV_SP_CCP
bool "Cryptographic Coprocessor device"
default y
depends on CRYPTO_DEV_CCP_DD
select HW_RANDOM
select DMA_ENGINE
select DMADEVICES
select CRYPTO_SHA1
select CRYPTO_SHA256
help
Provides the support for AMD Cryptographic Coprocessor (CCP) device
which can be used to offload encryption operations such as SHA, AES
and more.
config CRYPTO_DEV_CCP_CRYPTO
tristate "Encryption and hashing offload support"
default m
depends on CRYPTO_DEV_CCP_DD
depends on CRYPTO_DEV_SP_CCP
select CRYPTO_HASH
select CRYPTO_BLKCIPHER
select CRYPTO_AUTHENC
help
Support for using the cryptographic API with the AMD Cryptographic
Coprocessor. This module supports offload of SHA and AES algorithms.
If you choose 'M' here, this module will be called ccp_crypto.
