These are the third iteration of patches that add support to Qualcomm ICE (Inline Crypto Engine) for hardware wrapped keys using Qualcomm Hardware Key Manager (HWKM) They patches do the following: - Address comments from v2 (Found here: https://lore.kernel.org/all/20230719170423.220033-1-quic_gaurkash@xxxxxxxxxxx/) - Rebased and tested on top of Eric's latest patchset: https://lore.kernel.org/all/20231104211259.17448-1-ebiggers@xxxxxxxxxx/ - Rebased and tested on top of SM8650 patches from Linaro: https://lore.kernel.org/all/?q=sm8650 Information about patches copied over from v2: " 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: SM8650 MTP 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. Tested both standard and wrapped keys (Removing qcom,ice-use-hwkm from dtsi will support using standard keys) Steps to test: The following configs were enabled: CONFIG_BLK_INLINE_ENCRYPTION=y CONFIG_QCOM_INLINE_CRYPTO_ENGINE=m CONFIG_FS_ENCRYPTION_INLINE_CRYPT=y CONFIG_SCSI_UFS_CRYPTO=y Flash boot image, boot to shell and run the following commands Creating and preparing keys - mkfs.ext4 -F -O encrypt,stable_inodes /dev/disk/by-partlabel/userdata - mount /dev/disk/by-partlabel/userdata -o inlinecrypt /mnt - ./fscryptctl generate_hw_wrapped_key /dev/disk/by-partlabel/userdata > /mnt/key.longterm Note: import_hw_wrapped_key currently has a big which just got fixed, so it will be functional in the next SM8650 release (It might already be available by the time the boards are available to public) - ./fscryptctl prepare_hw_wrapped_key /dev/disk/by-partlabel/userdata < /mnt/key.longterm > /tmp/key.ephemeral - ./fscryptctl add_key --hw-wrapped-key < /tmp/key.ephemeral /mnt Create a folder and associate created keys with the folder - rm -rf /mnt/dir - mkdir /mnt/dir - ./fscryptctl set_policy --hw-wrapped-key --iv-ino-lblk-64 "$keyid" /mnt/dir - dmesg > /mnt/dir/test.txt - sync - Reboot - mount /dev/disk/by-partlabel/userdata -o inlinecrypt /mnt - ls /mnt/dir (You should see an encrypted file) - ./fscryptctl prepare_hw_wrapped_key /dev/disk/by-partlabel/userdata < /mnt/key.longterm > /tmp/key.ephemeral - ./fscryptctl add_key --hw-wrapped-key < /tmp/key.ephemeral /mnt - cat /mnt/dir/test.txt Gaurav Kashyap (12): 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 arm64: dts: qcom: sm8650: add hwkm support to ufs ice dt-bindings: crypto: ice: document the hwkm property .../crypto/qcom,inline-crypto-engine.yaml | 7 + arch/arm64/boot/dts/qcom/sm8650.dtsi | 3 +- drivers/firmware/qcom/qcom_scm.c | 276 +++++++++++++++ drivers/firmware/qcom/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 | 321 +++++++++++++++++- drivers/ufs/core/ufshcd-crypto.c | 87 ++++- drivers/ufs/host/ufs-qcom.c | 61 +++- include/linux/firmware/qcom/qcom_scm.h | 7 + include/soc/qcom/ice.h | 18 +- include/ufs/ufshcd.h | 22 ++ 13 files changed, 784 insertions(+), 37 deletions(-) -- 2.25.1
