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ARM: stm32: Fix TAMP_SMCR BKP..PROT fields on STM32MP15xx

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Update the TAMP_SMCR BKP..PROT fields to put first 10 registers
into protection zone 1 and next 5 into zone 2. This fixes use of
boot counter which is often in zone 3 and has to be updated from
Linux, which runs in NS.

Fixes: 73f7fc944c ("ARM: stm32: Initialize TAMP_SMCR BKP..PROT fields on STM32MP15xx")
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Marek Vasut
2024-06-19 00:57:25 +02:00
committed by Patrick Delaunay
parent 541d21cf08
commit 6b84683acc
1 changed files with 2 additions and 2 deletions
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4
arch/arm/mach-stm32mp/stm32mp1/stm32mp15x.c
View File

@@ -148,8 +148,8 @@ static void security_init(void)
*/
clrsetbits_le32(TAMP_SMCR,
TAMP_SMCR_BKPRWDPROT | TAMP_SMCR_BKPWDPROT,
FIELD_PREP(TAMP_SMCR_BKPRWDPROT, 0x20) |
FIELD_PREP(TAMP_SMCR_BKPWDPROT, 0x20));
FIELD_PREP(TAMP_SMCR_BKPRWDPROT, 0x0A) |
FIELD_PREP(TAMP_SMCR_BKPWDPROT, 0x0F));
/* GPIOZ: deactivate the security */
writel(BIT(0), RCC_MP_AHB5ENSETR);