[PATCH] board: ti: am654: Disable SA2UL node for HS devices

[PATCH] board: ti: am654: Disable SA2UL node for HS devices

[Andrew F. Davis]

On HS devices the access to SA2UL is restricted on the non-secure
ARM side, disable the node in DT to prevent firewall violations.
We used to only disable the TRNG but now that we have full SA2UL
support in Linux, in which TRNG is a sub-module, disable both
by disabling the parent SA2UL node.

Signed-off-by: Andrew F. Davis <afd@ti.com>
---
 board/ti/am65x/evm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/board/ti/am65x/evm.c b/board/ti/am65x/evm.c
index a22900dcf9..20b75ba133 100644
--- a/board/ti/am65x/evm.c
+++ b/board/ti/am65x/evm.c
@@ -108,10 +108,10 @@ int ft_board_setup(void *blob, bd_t *bd)
 	}
 
 #if defined(CONFIG_TI_SECURE_DEVICE)
-	/* Make HW RNG reserved for secure world use */
-	ret = fdt_disable_node(blob, "/interconnect at 100000/trng at 4e10000");
+	/* Make Crypto HW reserved for secure world use */
+	ret = fdt_disable_node(blob, "/interconnect at 100000/crypto at 4E00000");
 	if (ret)
-		printf("%s: disabling TRGN failed %d\n", __func__, ret);
+		printf("%s: disabling SA2UL failed %d\n", __func__, ret);
 #endif
 
 	return 0;
-- 
2.17.1

[PATCH] board: ti: am654: Disable SA2UL node for HS devices

[Lokesh Vutla]

On 10/06/20 12:44 am, Andrew F. Davis wrote:
> On HS devices the access to SA2UL is restricted on the non-secure
> ARM side, disable the node in DT to prevent firewall violations.
> We used to only disable the TRNG but now that we have full SA2UL
> support in Linux, in which TRNG is a sub-module, disable both
> by disabling the parent SA2UL node.
> 
> Signed-off-by: Andrew F. Davis <afd@ti.com>

Applied to u-boot-ti next.

Thanks and regards,
Lokesh