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kselftest/arm64: Add FEAT_CSSC to the hwcap selftest

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Add FEAT_CSSC to the set of features checked by the hwcap selftest.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20221017152520.1039165-3-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Mark Brown 2022-10-17 16:25:16 +01:00 committed by Will Deacon
parent 95aa6860d6
commit b0ab73a547
1 changed files with 13 additions and 0 deletions
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13
tools/testing/selftests/arm64/abi/hwcap.c
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@ -33,6 +33,12 @@
*/ */
typedef void (*sigill_fn)(void); typedef void (*sigill_fn)(void);
static void cssc_sigill(void)
{
/* CNT x0, x0 */
asm volatile(".inst 0xdac01c00" : : : "x0");
}
static void rng_sigill(void) static void rng_sigill(void)
{ {
asm volatile("mrs x0, S3_3_C2_C4_0" : : : "x0"); asm volatile("mrs x0, S3_3_C2_C4_0" : : : "x0");
@ -118,6 +124,13 @@ static const struct hwcap_data {
sigill_fn sigill_fn; sigill_fn sigill_fn;
bool sigill_reliable; bool sigill_reliable;
} hwcaps[] = { } hwcaps[] = {
{
.name = "CSSC",
.at_hwcap = AT_HWCAP2,
.hwcap_bit = HWCAP2_CSSC,
.cpuinfo = "cssc",
.sigill_fn = cssc_sigill,
},
{ {
.name = "RNG", .name = "RNG",
.at_hwcap = AT_HWCAP2, .at_hwcap = AT_HWCAP2,