diff options
| author | Horia GeantA <horia.geanta@nxp.com> | 2023-04-05 12:07:52 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-04-14 13:59:34 +0300 |
| commit | 0489929f73a2b749cf409b95701bb6bd3c37cd91 (patch) | |
| tree | 1748e0e5e948ad09bd3e6950e92f921841459e6a /drivers/crypto/caam/debugfs.c | |
| parent | ae1dd17daeb8193b1ea3665c89ade63cf7385182 (diff) | |
| download | linux-0489929f73a2b749cf409b95701bb6bd3c37cd91.tar.xz | |
crypto: caam - OP-TEE firmware support
caam driver needs to be aware of OP-TEE f/w presence, since some things
are done differently:
1. there is no access to controller's register page (note however that
some registers are aliased in job rings' register pages)
2 Due to this, MCFGR[PS] cannot be read and driver assumes
MCFGR[PS] = b'0 - engine using 32-bit address pointers.
This is in sync with the fact that:
-all i.MX SoCs currently use MCFGR[PS] = b'0
-only i.MX OP-TEE use cases don't allow access to controller register page
Signed-off-by: Horia GeantA <horia.geanta@nxp.com>
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: Gaurav Jain <gaurav.jain@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/caam/debugfs.c')
| -rw-r--r-- | drivers/crypto/caam/debugfs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/crypto/caam/debugfs.c b/drivers/crypto/caam/debugfs.c index b2ef2273298d..6358d3cabf57 100644 --- a/drivers/crypto/caam/debugfs.c +++ b/drivers/crypto/caam/debugfs.c @@ -77,6 +77,9 @@ void caam_debugfs_init(struct caam_drv_private *ctrlpriv, debugfs_create_file("fault_status", 0444, ctrlpriv->ctl, &perfmon->status, &caam_fops_u32_ro); + if (ctrlpriv->optee_en) + return; + /* Internal covering keys (useful in non-secure mode only) */ ctrlpriv->ctl_kek_wrap.data = (__force void *)&ctrlpriv->ctrl->kek[0]; ctrlpriv->ctl_kek_wrap.size = KEK_KEY_SIZE * sizeof(u32); |