Accesses to the backing store are performed using the write16
and read16 ops of DM RTC devices.
+config DM_BOOTCOUNT_I2C_EEPROM
+ bool "Support i2c eeprom devices as a backing store for bootcount"
+ depends on I2C_EEPROM
+ help
+ Enabled reading/writing the bootcount in a DM i2c eeprom device.
+ The wrapper device is to be specified with the compatible string
+ 'u-boot,bootcount-i2c-eeprom' and the 'i2c-eeprom'-property (a phandle
+ pointing to the underlying i2c eeprom device) and an optional 'offset'
+ property are supported.
+
+config BOOTCOUNT_MEM
+ bool "Support memory based bootcounter"
+ help
+ Enabling Memory based bootcount, typically in a SoC register which
+ is not cleared on softreset.
+ compatible = "u-boot,bootcount";
+
endmenu
endif