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| author | Sami Mujawar <sami.mujawar@arm.com> | 2024-10-17 14:14:33 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2024-10-23 10:19:33 +0100 |
| commit | 7999edc484ca376f803562edb2d43ec921642c2a (patch) | |
| tree | 882b3fd10fdfe39853326ace5fa23ddcff2c6c94 /drivers/mfd/tps6105x.c | |
| parent | 42be24a4178fe51e6f47d91d8621b2f53820f88b (diff) | |
| download | lwn-7999edc484ca376f803562edb2d43ec921642c2a.tar.gz lwn-7999edc484ca376f803562edb2d43ec921642c2a.zip | |
virt: arm-cca-guest: TSM_REPORT support for realms
Introduce an arm-cca-guest driver that registers with
the configfs-tsm module to provide user interfaces for
retrieving an attestation token.
When a new report is requested the arm-cca-guest driver
invokes the appropriate RSI interfaces to query an
attestation token.
The steps to retrieve an attestation token are as follows:
1. Mount the configfs filesystem if not already mounted
mount -t configfs none /sys/kernel/config
2. Generate an attestation token
report=/sys/kernel/config/tsm/report/report0
mkdir $report
dd if=/dev/urandom bs=64 count=1 > $report/inblob
hexdump -C $report/outblob
rmdir $report
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Link: https://lore.kernel.org/r/20241017131434.40935-11-steven.price@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers/mfd/tps6105x.c')
0 files changed, 0 insertions, 0 deletions