These patches add support to Qualcomm ICE (Inline Crypto Enginr) for hardware wrapped keys using Qualcomm Hardware Key Manager (HWKM) and are made on top of a rebased version Eric Bigger's set of changes to support wrapped keys in fscrypt and block below: https://git.kernel.org/pub/scm/fs/fscrypt/linux.git/log/?h=wrapped-keys-v7 (The rebased patches are not uploaded here) Ref v1 here: https://lore.kernel.org/linux-scsi/20211206225725.77512-1-quic_gaurkash@xxxxxxxxxxx/ Explanation and use of hardware-wrapped-keys can be found here: Documentation/block/inline-encryption.rst This patch is organized as follows: Patch 1 - Prepares ICE and storage layers (UFS and EMMC) to pass around wrapped keys. Patch 2 - Adds a new SCM api to support deriving software secret when wrapped keys are used Patch 3-4 - Adds support for wrapped keys in the ICE driver. This includes adding HWKM support Patch 5-6 - Adds support for wrapped keys in UFS Patch 7-10 - Supports generate, prepare and import functionality in ICE and UFS NOTE: MMC will have similar changes to UFS and will be uploaded in a different patchset Patch 3, 4, 8, 10 will have MMC equivalents. Testing: Test platform: SM8550 MTP Engineering trustzone image is required to test this feature only for SM8550. For SM8650 onwards, all trustzone changes to support this will be part of the released images. The engineering changes primarily contain hooks to generate, import and prepare keys for HW wrapped disk encryption. The changes were tested by mounting initramfs and running the fscryptctl tool (Ref: https://github.com/ebiggers/fscryptctl/tree/wip-wrapped-keys) to generate and prepare keys, as well as to set policies on folders, which consequently invokes disk encryption flows through UFS. Gaurav Kashyap (10): ice, ufs, mmc: use blk_crypto_key for program_key qcom_scm: scm call for deriving a software secret soc: qcom: ice: add hwkm support in ice soc: qcom: ice: support for hardware wrapped keys ufs: core: support wrapped keys in ufs core ufs: host: wrapped keys support in ufs qcom qcom_scm: scm call for create, prepare and import keys ufs: core: add support for generate, import and prepare keys soc: qcom: support for generate, import and prepare key ufs: host: support for generate, import and prepare key drivers/firmware/qcom_scm.c | 292 +++++++++++++++++++++++ drivers/firmware/qcom_scm.h | 4 + drivers/mmc/host/cqhci-crypto.c | 7 +- drivers/mmc/host/cqhci.h | 2 + drivers/mmc/host/sdhci-msm.c | 6 +- drivers/soc/qcom/ice.c | 309 +++++++++++++++++++++++-- drivers/ufs/core/ufshcd-crypto.c | 92 +++++++- drivers/ufs/host/ufs-qcom.c | 63 ++++- include/linux/firmware/qcom/qcom_scm.h | 13 ++ include/soc/qcom/ice.h | 18 +- include/ufs/ufshcd.h | 25 ++ 11 files changed, 797 insertions(+), 34 deletions(-) -- 2.25.1
