stm32mp1: add bootcount support
Activate bootcount and use TAMP register to store the count value.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
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 @@
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 @@
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 @@
#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