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refactor(stm32mp1): move the MCU security to BL32

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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
This commit is contained in:
Yann Gautier 2022-02-01 18:01:17 +01:00
parent 77b4ca0b2f
commit 8d92e4be19
2 changed files with 4 additions and 6 deletions
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5
plat/st/stm32mp1/bl2_plat_setup.c
View file

@ -255,11 +255,6 @@ void bl2_el3_plat_arch_setup(void)
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.

5
plat/st/stm32mp1/sp_min/sp_min_setup.c
View file

@ -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 @@ void sp_min_platform_setup(void)
stm32mp_gic_init();
/* Disable MCU subsystem protection */
stm32mp1_clk_mcuss_protect(false);
if (stm32_iwdg_init() < 0) {
panic();
}