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author | Manish V Badarkhe <Manish.Badarkhe@arm.com> | 2020-07-23 20:23:01 +0100 |
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committer | Manish V Badarkhe <Manish.Badarkhe@arm.com> | 2020-07-26 08:16:29 +0100 |
commit | 6f0a2f04abd6f75c8f9e16c3f06c27609c49568a (patch) | |
tree | d569ac8934992b6a18fdacfe44c6d57bc203dec8 /services | |
parent | 1056ddce76f81a920345b90e6ce896849a8cc55a (diff) | |
download | trusted-firmware-a-6f0a2f04abd6f75c8f9e16c3f06c27609c49568a.tar.gz |
SMCCC: Introduce function to check SMCCC function availability
Currently, 'SMCCC_ARCH_FEATURES' SMC call handler unconditionally
returns 'SMC_OK' for 'SMCCC_ARCH_SOC_ID' function. This seems to
be not correct for the platform which doesn't implement soc-id
functionality i.e. functions to retrieve both soc-version and
soc-revision.
Hence introduced a platform function which will check whether SMCCC
feature is available for the platform.
Also, updated porting guide for the newly added platform function.
Change-Id: I389f0ef6b0837bb24c712aa995b7176117bc7961
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Diffstat (limited to 'services')
-rw-r--r-- | services/arm_arch_svc/arm_arch_svc_setup.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/services/arm_arch_svc/arm_arch_svc_setup.c b/services/arm_arch_svc/arm_arch_svc_setup.c index 588656d57f..37bfc62e2b 100644 --- a/services/arm_arch_svc/arm_arch_svc_setup.c +++ b/services/arm_arch_svc/arm_arch_svc_setup.c @@ -24,8 +24,9 @@ static int32_t smccc_arch_features(u_register_t arg1) switch (arg1) { case SMCCC_VERSION: case SMCCC_ARCH_FEATURES: + return SMC_ARCH_CALL_SUCCESS; case SMCCC_ARCH_SOC_ID: - return SMC_OK; + return plat_is_smccc_feature_available(arg1); #if WORKAROUND_CVE_2017_5715 case SMCCC_ARCH_WORKAROUND_1: if (check_wa_cve_2017_5715() == ERRATA_NOT_APPLIES) |