i2c, bootcount: add support for bootcounter on i2c devices

[oweals/u-boot.git] / README

diff --git a/README b/README
index bfd89b0bfb091259f091db5ff68f3f8f0b2be63f..f14364b5a56e2cb1ddb8510e171540fce5557b64 100644 (file)
--- a/README
+++ b/README
@@ -2855,6 +2855,26 @@ CBFS (Coreboot Filesystem) support
                The signing part is build into mkimage regardless of this
                option.
 
+- bootcount support:
+               CONFIG_BOOTCOUNT_LIMIT
+
+               This enables the bootcounter support, see:
+               http://www.denx.de/wiki/DULG/UBootBootCountLimit
+
+               CONFIG_AT91SAM9XE
+               enable special bootcounter support on at91sam9xe based boards.
+               CONFIG_BLACKFIN
+               enable special bootcounter support on blackfin based boards.
+               CONFIG_SOC_DA8XX
+               enable special bootcounter support on da850 based boards.
+               CONFIG_BOOTCOUNT_RAM
+               enable support for the bootcounter in RAM
+               CONFIG_BOOTCOUNT_I2C
+               enable support for the bootcounter on an i2c (like RTC) device.
+                       CONFIG_SYS_I2C_RTC_ADDR = i2c chip address
+                       CONFIG_SYS_BOOTCOUNT_ADDR = i2c addr which is used for
+                                                   the bootcounter.
+                       CONFIG_BOOTCOUNT_ALEN = address len
 
 - Show boot progress:
                CONFIG_SHOW_BOOT_PROGRESS