diff options
| author | Sandrine Bailleux <sandrine.bailleux@arm.com> | 2019-01-07 09:53:50 +0100 |
|---|---|---|
| committer | Sandrine Bailleux <sandrine.bailleux@arm.com> | 2019-01-07 12:53:44 +0100 |
| commit | cab5e3693738743255bd9a8a8f36dccdd74ca495 (patch) | |
| tree | f101603c56eeb05773923aa8d84a4a0603c3b5c7 /lib | |
| parent | bbdb2762062547ef279256d0163e4d743f21474a (diff) | |
Make UUID buffer optional for is_trusted_os_present()
The caller might simply want to know whether there is a Trusted OS,
without the need to identify it.
Change-Id: I97eef8b6e6c4cb948d48735cd7170fced98aee9a
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/trusted_os/trusted_os.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/lib/trusted_os/trusted_os.c b/lib/trusted_os/trusted_os.c index b24c3d3..ac6a681 100644 --- a/lib/trusted_os/trusted_os.c +++ b/lib/trusted_os/trusted_os.c @@ -14,7 +14,6 @@ unsigned int is_trusted_os_present(uuid_t *tos_uuid) { smc_args tos_uid_args = { SMC_TOS_UID }; smc_ret_values ret; - uint32_t *tos_uuid32; ret = tftf_smc(&tos_uid_args); @@ -23,11 +22,13 @@ unsigned int is_trusted_os_present(uuid_t *tos_uuid) (ret.ret3 == 0))) return 0; - tos_uuid32 = (uint32_t *) tos_uuid; - tos_uuid32[0] = ret.ret0; - tos_uuid32[1] = ret.ret1; - tos_uuid32[2] = ret.ret2; - tos_uuid32[3] = ret.ret3; + if (tos_uuid != NULL) { + uint32_t *tos_uuid32 = (uint32_t *) tos_uuid; + tos_uuid32[0] = ret.ret0; + tos_uuid32[1] = ret.ret1; + tos_uuid32[2] = ret.ret2; + tos_uuid32[3] = ret.ret3; + } return 1; } |