refactor(stm32mp1): move the MCU security to BL32
Change the MCKPROT control management. Now, the MCU subsystem
is done in the BL32 using the dedicated clock function.
If using OP-TEE, you will need the corresponding commit [1].
This should be integrated in OP-TEE tag 4.2.0.
[1] e07f9212d5 plat-stm32mp1: shared_resource: disable MCKPROT if
not needed
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Change-Id: I59f90ace750aa93f674389f881e2fe14ad334a72
diff --git a/plat/st/stm32mp1/bl2_plat_setup.c b/plat/st/stm32mp1/bl2_plat_setup.c
index fd86020..798c033 100644
--- a/plat/st/stm32mp1/bl2_plat_setup.c
+++ b/plat/st/stm32mp1/bl2_plat_setup.c
@@ -255,11 +255,6 @@
mmio_clrbits_32(rcc_base + RCC_BDCR, RCC_BDCR_VSWRST);
}
-#if STM32MP15
- /* Disable MCKPROT */
- mmio_clrbits_32(rcc_base + RCC_TZCR, RCC_TZCR_MCKPROT);
-#endif
-
/*
* Set minimum reset pulse duration to 31ms for discrete power
* supplied boards.
diff --git a/plat/st/stm32mp1/sp_min/sp_min_setup.c b/plat/st/stm32mp1/sp_min/sp_min_setup.c
index b46f4af..245b2d3 100644
--- a/plat/st/stm32mp1/sp_min/sp_min_setup.c
+++ b/plat/st/stm32mp1/sp_min/sp_min_setup.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015-2023, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2024, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -182,6 +182,9 @@
stm32mp_gic_init();
+ /* Disable MCU subsystem protection */
+ stm32mp1_clk_mcuss_protect(false);
+
if (stm32_iwdg_init() < 0) {
panic();
}