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charset="utf-8" From: Bartosz Golaszewski Select the TrustZone memory allocator in Kconfig and create a pool of memory shareable with the TrustZone when probing the SCM driver. This will allow a gradual conversion of all relevant SCM calls to using the dedicated allocator. Signed-off-by: Bartosz Golaszewski Reviewed-by: Andrew Halaney Tested-by: Andrew Halaney # sc8280xp-lenovo-thinkpad-= x13s Tested-by: Deepti Jaggi #sa8775p-ride Reviewed-by: Elliot Berman --- drivers/firmware/qcom/Kconfig | 1 + drivers/firmware/qcom/qcom_scm.c | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) diff --git a/drivers/firmware/qcom/Kconfig b/drivers/firmware/qcom/Kconfig index f18686edf415..d24d83223867 100644 --- a/drivers/firmware/qcom/Kconfig +++ b/drivers/firmware/qcom/Kconfig @@ -7,6 +7,7 @@ menu "Qualcomm firmware drivers" =20 config QCOM_SCM + select QCOM_TZMEM tristate =20 config QCOM_TZMEM diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_= scm.c index 520de9b5633a..0d4c028be0c1 100644 --- a/drivers/firmware/qcom/qcom_scm.c +++ b/drivers/firmware/qcom/qcom_scm.c @@ -8,8 +8,10 @@ #include #include #include +#include #include #include +#include #include #include #include @@ -20,9 +22,11 @@ #include #include #include +#include #include =20 #include "qcom_scm.h" +#include "qcom_tzmem.h" =20 static bool download_mode =3D IS_ENABLED(CONFIG_QCOM_SCM_DOWNLOAD_MODE_DEF= AULT); module_param(download_mode, bool, 0); @@ -41,6 +45,8 @@ struct qcom_scm { int scm_vote_count; =20 u64 dload_mode_addr; + + struct qcom_tzmem_pool *mempool; }; =20 struct qcom_scm_current_perm_info { @@ -1887,6 +1893,16 @@ static int qcom_scm_probe(struct platform_device *pd= ev) if (of_property_read_bool(pdev->dev.of_node, "qcom,sdi-enabled")) qcom_scm_disable_sdi(); =20 + ret =3D qcom_tzmem_enable(__scm->dev); + if (ret) + return dev_err_probe(__scm->dev, ret, + "Failed to enable the TrustZone memory allocator\n"); + + __scm->mempool =3D devm_qcom_tzmem_pool_new(__scm->dev, SZ_256K); + if (IS_ERR(__scm->mempool)) + return dev_err_probe(__scm->dev, PTR_ERR(__scm->mempool), + "Failed to create the SCM memory pool\n"); + /* * Initialize the QSEECOM interface. * --=20 2.40.1