path: root/scripts
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authorSumit Garg <sumit.garg@linaro.org>2019-01-29 11:19:35 +0530
committerJens Wiklander <jens.wiklander@linaro.org>2019-02-01 15:12:46 +0100
commit0fc1db9d105915021260eb241661b8e96f5c0f1a (patch)
tree5e5d608e2a01aaeec416ade44d47036638ad7289 /scripts
parenttee: add supp_nowait flag in tee_context struct (diff)
tee: add bus driver framework for TEE based devices
Introduce a generic TEE bus driver concept for TEE based kernel drivers which would like to communicate with TEE based devices/services. Also add support in module device table for these new TEE based devices. In this TEE bus concept, devices/services are identified via Universally Unique Identifier (UUID) and drivers register a table of device UUIDs which they can support. So this TEE bus framework registers following apis: - match(): Iterates over the driver UUID table to find a corresponding match for device UUID. If a match is found, then this particular device is probed via corresponding probe api registered by the driver. This process happens whenever a device or a driver is registered with TEE bus. - uevent(): Notifies user-space (udev) whenever a new device is registered on this bus for auto-loading of modularized drivers. Also this framework allows for device enumeration to be specific to corresponding TEE implementation like OP-TEE etc. Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Bhupesh Sharma <bhsharma@redhat.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'scripts')
2 files changed, 22 insertions, 0 deletions
diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c
index 293004499b4d..160718383a71 100644
--- a/scripts/mod/devicetable-offsets.c
+++ b/scripts/mod/devicetable-offsets.c
@@ -225,5 +225,8 @@ int main(void)
DEVID_FIELD(typec_device_id, svid);
DEVID_FIELD(typec_device_id, mode);
+ DEVID(tee_client_device_id);
+ DEVID_FIELD(tee_client_device_id, uuid);
return 0;
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index a37af7d71973..d0e41723627f 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -37,6 +37,9 @@ typedef unsigned char __u8;
typedef struct {
__u8 b[16];
} uuid_le;
+typedef struct {
+ __u8 b[16];
+} uuid_t;
/* Big exception to the "don't include kernel headers into userspace, which
* even potentially has different endianness and word sizes, since
@@ -1287,6 +1290,21 @@ static int do_typec_entry(const char *filename, void *symval, char *alias)
return 1;
+/* Looks like: tee:uuid */
+static int do_tee_entry(const char *filename, void *symval, char *alias)
+ DEF_FIELD(symval, tee_client_device_id, uuid);
+ sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+ uuid.b[0], uuid.b[1], uuid.b[2], uuid.b[3], uuid.b[4],
+ uuid.b[5], uuid.b[6], uuid.b[7], uuid.b[8], uuid.b[9],
+ uuid.b[10], uuid.b[11], uuid.b[12], uuid.b[13], uuid.b[14],
+ uuid.b[15]);
+ add_wildcard(alias);
+ return 1;
/* Does namelen bytes of name exactly match the symbol? */
static bool sym_is(const char *name, unsigned namelen, const char *symbol)
@@ -1357,6 +1375,7 @@ static const struct devtable devtable[] = {
{"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry},
{"tbsvc", SIZE_tb_service_id, do_tbsvc_entry},
{"typec", SIZE_typec_device_id, do_typec_entry},
+ {"tee", SIZE_tee_client_device_id, do_tee_entry},
/* Create MODULE_ALIAS() statements.