Re: [PATCH v2] ARM: stm32: Initialize TAMP_SMCR BKP..PROT fields on STM32MP15xx

On 4/18/24 8:24 PM, Patrick DELAUNAY wrote: Hi, Hi, [...] @@ -136,6 +140,18 @@ static void security_init(void)    */   writel(0x0, TAMP_CR1); +    /* + * TAMP: Configure non-zero secure protection settings. This is + * checked by BootROM function 35ac on OTP-CLOSED device

Re: [PATCH v2] ARM: stm32: Initialize TAMP_SMCR BKP..PROT fields on STM32MP15xx

Hi, On 4/15/24 14:55, Marek Vasut wrote: In case of an OTP-CLOSED STM32MP15xx system, the CPU core 1 cannot be released from endless loop in BootROM only by populating TAMP BKPxR 4 and 5 with magic and branch address and sending SGI0 interrupt from core 0 to core 1 twice. TAMP_SMCR BKP..PROT

[PATCH v2] ARM: stm32: Initialize TAMP_SMCR BKP..PROT fields on STM32MP15xx

In case of an OTP-CLOSED STM32MP15xx system, the CPU core 1 cannot be released from endless loop in BootROM only by populating TAMP BKPxR 4 and 5 with magic and branch address and sending SGI0 interrupt from core 0 to core 1 twice. TAMP_SMCR BKP..PROT fields must be initialized as well to release