SPL need to set GPIOZ_SECCFGR = 0 to enable access to GPIOZ bank (open security).
Signed-off-by: Patrick Delaunay patrick.delaunay@st.com ---
arch/arm/mach-stm32mp/cpu.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/arm/mach-stm32mp/cpu.c b/arch/arm/mach-stm32mp/cpu.c index 5d79bde..f39941e 100644 --- a/arch/arm/mach-stm32mp/cpu.c +++ b/arch/arm/mach-stm32mp/cpu.c @@ -18,6 +18,7 @@ #define RCC_DBGCFGR (STM32_RCC_BASE + 0x080C) #define RCC_BDCR (STM32_RCC_BASE + 0x0140) #define RCC_MP_APB5ENSETR (STM32_RCC_BASE + 0x0208) +#define RCC_MP_AHB5ENSETR (STM32_RCC_BASE + 0x0210) #define RCC_BDCR_VSWRST BIT(31) #define RCC_BDCR_RTCSRC GENMASK(17, 16) #define RCC_DBGCFGR_DBGCKEN BIT(8) @@ -44,6 +45,9 @@ #define DBGMCU_IDC_REV_ID_MASK GENMASK(31, 16) #define DBGMCU_IDC_REV_ID_SHIFT 16
+/* GPIOZ registers */ +#define GPIOZ_SECCFGR 0x54004030 + /* boot interface from Bootrom * - boot instance = bit 31:16 * - boot device = bit 15:0 @@ -135,6 +139,10 @@ static void security_init(void) * Bit 16 ITAMP1E: RTC power domain supply monitoring */ writel(0x0, TAMP_CR1); + + /* GPIOZ: deactivate the security */ + writel(BIT(0), RCC_MP_AHB5ENSETR); + writel(0x0, GPIOZ_SECCFGR); } #endif /* CONFIG_STM32MP1_TRUSTED */