diff options
| author | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2024-05-27 14:55:00 +0200 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2024-06-23 16:08:20 -0500 |
| commit | 178e19c0df1b1b27668fc6ca43b25a03eda01dad (patch) | |
| tree | a30547e7b249ad426c18a8e37ae6286e9a5d8425 /drivers/firmware/qcom/qcom_scm.h | |
| parent | 6612103ec35af6058bb85ab24dae28e119b3c055 (diff) | |
firmware: qcom: scm: add support for SHM bridge operations
SHM Bridge is a safety mechanism allowing to limit the amount of memory
shared between the kernel and the TrustZone to regions explicitly marked
as such.
Add low-level primitives for enabling SHM bridge support as well as
creating and destroying SHM bridges to qcom-scm.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: Andrew Halaney <ahalaney@redhat.com>
Tested-by: Andrew Halaney <ahalaney@redhat.com> # sc8280xp-lenovo-thinkpad-x13s
Tested-by: Deepti Jaggi <quic_djaggi@quicinc.com> #sa8775p-ride
Reviewed-by: Elliot Berman <quic_eberman@quicinc.com>
Link: https://lore.kernel.org/r/20240527-shm-bridge-v10-10-ce7afaa58d3a@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Diffstat (limited to 'drivers/firmware/qcom/qcom_scm.h')
| -rw-r--r-- | drivers/firmware/qcom/qcom_scm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/firmware/qcom/qcom_scm.h b/drivers/firmware/qcom/qcom_scm.h index 628f5efe0197..685b8f59e7a6 100644 --- a/drivers/firmware/qcom/qcom_scm.h +++ b/drivers/firmware/qcom/qcom_scm.h @@ -116,6 +116,9 @@ struct qcom_tzmem_pool *qcom_scm_get_tzmem_pool(void); #define QCOM_SCM_MP_IOMMU_SET_CP_POOL_SIZE 0x05 #define QCOM_SCM_MP_VIDEO_VAR 0x08 #define QCOM_SCM_MP_ASSIGN 0x16 +#define QCOM_SCM_MP_SHM_BRIDGE_ENABLE 0x1c +#define QCOM_SCM_MP_SHM_BRIDGE_DELETE 0x1d +#define QCOM_SCM_MP_SHM_BRIDGE_CREATE 0x1e #define QCOM_SCM_SVC_OCMEM 0x0f #define QCOM_SCM_OCMEM_LOCK_CMD 0x01 |