diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2019-08-29 23:28:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-03 23:01:16 +0300 |
| commit | 8a4bc4f195044004520e38da7b8a52a76ccc9945 (patch) | |
| tree | aadd5ab4df9c571608199ba1f74fc1d2030b3256 /drivers/hwtracing/coresight/coresight-tmc.h | |
| parent | f52ff9b7d64953b9a1a03faaf797d23b5c1d10d0 (diff) | |
| download | linux-8a4bc4f195044004520e38da7b8a52a76ccc9945.tar.xz | |
coresight: tmc-etr: Check if non-secure access is enabled
CoreSight TMC-ETR must have the non-secure invasive debug access
enabled for use by self-hosted tracing. Without it, there is no
point in enabling the ETR. So, let us check it in the TMC_AUTHSTATUS
register and fail the probe if it is disabled.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20190829202842.580-7-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-tmc.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h index 95d2e2747970..4c59f2a4ad0e 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.h +++ b/drivers/hwtracing/coresight/coresight-tmc.h @@ -39,6 +39,7 @@ #define TMC_ITATBCTR2 0xef0 #define TMC_ITATBCTR1 0xef4 #define TMC_ITATBCTR0 0xef8 +#define TMC_AUTHSTATUS 0xfb8 /* register description */ /* TMC_CTL - 0x020 */ @@ -90,6 +91,8 @@ #define TMC_DEVID_AXIAW_SHIFT 17 #define TMC_DEVID_AXIAW_MASK 0x7f +#define TMC_AUTH_NSID_MASK GENMASK(1, 0) + enum tmc_config_type { TMC_CONFIG_TYPE_ETB, TMC_CONFIG_TYPE_ETR, |