Activate bootcount and use TAMP register to store the count value.
Signed-off-by: Patrick Delaunay patrick.delaunay@st.com ---
arch/arm/mach-stm32mp/Kconfig | 11 +++++++++++ arch/arm/mach-stm32mp/include/mach/stm32.h | 1 + 2 files changed, 12 insertions(+)
diff --git a/arch/arm/mach-stm32mp/Kconfig b/arch/arm/mach-stm32mp/Kconfig index 26dace10..c984616 100644 --- a/arch/arm/mach-stm32mp/Kconfig +++ b/arch/arm/mach-stm32mp/Kconfig @@ -39,6 +39,8 @@ config TARGET_STM32MP1 select STM32_RCC select STM32_RESET select SYS_ARCH_TIMER + imply BOOTCOUNT_LIMIT + imply CMD_BOOTCOUNT imply SYSRESET_PSCI if STM32MP1_TRUSTED imply SYSRESET_SYSCON if !STM32MP1_TRUSTED help @@ -76,6 +78,15 @@ config SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_MMC2 Partition on the second MMC to load U-Boot from when the MMC is being used in raw mode
+if BOOTCOUNT_LIMIT +config SYS_BOOTCOUNT_SINGLEWORD + default y + +# TAMP_BOOTCOUNT = TAMP_BACKUP_REGISTER(21) +config SYS_BOOTCOUNT_ADDR + default 0x5C00A154 +endif + if DEBUG_UART
config DEBUG_UART_BOARD_INIT diff --git a/arch/arm/mach-stm32mp/include/mach/stm32.h b/arch/arm/mach-stm32mp/include/mach/stm32.h index c526c88..6795352 100644 --- a/arch/arm/mach-stm32mp/include/mach/stm32.h +++ b/arch/arm/mach-stm32mp/include/mach/stm32.h @@ -88,6 +88,7 @@ enum boot_device { #define TAMP_BACKUP_MAGIC_NUMBER TAMP_BACKUP_REGISTER(4) #define TAMP_BACKUP_BRANCH_ADDRESS TAMP_BACKUP_REGISTER(5) #define TAMP_BOOT_CONTEXT TAMP_BACKUP_REGISTER(20) +#define TAMP_BOOTCOUNT TAMP_BACKUP_REGISTER(21)
#define TAMP_BOOT_MODE_MASK GENMASK(15, 8) #define TAMP_BOOT_MODE_SHIFT 8