Revert "drivers/crypto/fsl: assign job-rings to non-TrustZone"

Commit 22191ac35344 ("drivers/crypto/fsl: assign job-rings to
 non-TrustZone") breaks HABv4 encrypted boot support in the
following i.MX devices:

- i.MX6UL
- i.MX7S
- i.MX7D
- i.MX7ULP

For preparing a HABv4 encrypted boot image it's necessary to
encapsulate the generated DEK in a blob. In devices listed
above the blob generation function takes into consideration
the Job Ring TrustZone ownership configuration (JROWN_NS)
and can be only decapsulated by the same configuration.

The ROM code expects DEK blobs encapsulated by the Secure World
environments which commonly have JROWN_NS = 0.

As U-Boot is running in Secure World we must have JROWN_NS = 0
so the blobs generated by dek_blob tool can be decapsulated
by the ROM code.

Job-rings assignment is now handled in OP-TEE OS, this commit can
be safely reverted.
https://github.com/OP-TEE/optee_os/pull/2986

This reverts commit 22191ac353445ad8fafc5a78aefcd94e78963041.

Signed-off-by: Breno Lima <breno.lima@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

1 files changed, 0 insertions, 9 deletions

diff --git a/drivers/crypto/fsl/jr.c b/drivers/crypto/fsl/jr.c
index cc8d3b02a5..3121762364 100644
--- a/drivers/crypto/fsl/jr.c
+++ b/drivers/crypto/fsl/jr.c
@@ -578,8 +578,6 @@ int sec_init_idx(uint8_t sec_idx)
 {
 	ccsr_sec_t *sec = (void *)SEC_ADDR(sec_idx);
 	uint32_t mcr = sec_in32(&sec->mcfgr);
-	uint32_t jrown_ns;
-	int i;
 	int ret = 0;
 
 #ifdef CONFIG_FSL_CORENET
@@ -635,13 +633,6 @@ int sec_init_idx(uint8_t sec_idx)
 #endif
 #endif
 
-	/* Set ownership of job rings to non-TrustZone mode by default */
-	for (i = 0; i < ARRAY_SIZE(sec->jrliodnr); i++) {
-		jrown_ns = sec_in32(&sec->jrliodnr[i].ms);
-		jrown_ns |= JROWN_NS | JRMID_NS;
-		sec_out32(&sec->jrliodnr[i].ms, jrown_ns);
-	}
-
 	ret = jr_init(sec_idx);
 	if (ret < 0) {
 		printf("SEC initialization failed\n");