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stm32mp1: add bootcount support

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Activate bootcount and use TAMP register to store the count value.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay 2019-04-18 17:32:45 +02:00 committed by Patrice Chotard
parent 8099e3db60
commit 3419982bc3
2 changed files with 12 additions and 0 deletions
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11
arch/arm/mach-stm32mp/Kconfig
View File

@ -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

1
arch/arm/mach-stm32mp/include/mach/stm32.h
View File

@ -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