Check that when POE is enabled, the POR_EL0 register is accessible.
Signed-off-by: Joey Gouly <joey.gouly@xxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
---
tools/testing/selftests/arm64/abi/hwcap.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c
index e3d262831d91..64bb49fe3f5c 100644
--- a/tools/testing/selftests/arm64/abi/hwcap.c
+++ b/tools/testing/selftests/arm64/abi/hwcap.c
@@ -101,6 +101,12 @@ 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");
@@ -379,6 +385,13 @@ static const struct hwcap_data {
.cpuinfo = "pmull",
.sigill_fn = pmull_sigill,
},
+ {
+ .name = "POE",
+ .at_hwcap = AT_HWCAP2,
+ .hwcap_bit = HWCAP2_POE,
+ .cpuinfo = "poe",
+ .sigill_fn = poe_sigill,
+ },
{
.name = "RNG",
.at_hwcap = AT_HWCAP2,
--
2.25.1
