diff options
| author | Joey Gouly <joey.gouly@arm.com> | 2024-08-22 16:11:10 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-09-04 12:54:06 +0100 |
| commit | fabf056278b4ccddea4a944a1635fee44033b71f (patch) | |
| tree | 58fd205fb5afb4d7ce4265998ae9746bde2f560b /tools/testing/selftests/arm64/abi | |
| parent | f5b5ea51f78f2ebd94d5a77702bbe5eee8924b50 (diff) | |
kselftest/arm64: add HWCAP test for FEAT_S1POE
Check that when POE is enabled, the POR_EL0 register is accessible.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240822151113.1479789-28-joey.gouly@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'tools/testing/selftests/arm64/abi')
| -rw-r--r-- | tools/testing/selftests/arm64/abi/hwcap.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index d8909b2b535a..f2d6007a2b98 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -156,6 +156,12 @@ static void pmull_sigill(void) asm volatile(".inst 0x0ee0e000" : : : ); } +static void poe_sigill(void) +{ + /* mrs x0, POR_EL0 */ + asm volatile("mrs x0, S3_3_C10_C2_4" : : : "x0"); +} + static void rng_sigill(void) { asm volatile("mrs x0, S3_3_C2_C4_0" : : : "x0"); @@ -602,6 +608,14 @@ static const struct hwcap_data { .sigill_fn = pmull_sigill, }, { + .name = "POE", + .at_hwcap = AT_HWCAP2, + .hwcap_bit = HWCAP2_POE, + .cpuinfo = "poe", + .sigill_fn = poe_sigill, + .sigill_reliable = true, + }, + { .name = "RNG", .at_hwcap = AT_HWCAP2, .hwcap_bit = HWCAP2_RNG, |