snapper9260: remove unused AT91_LEGACY

[karo-tx-uboot.git] / README

diff --git a/README b/README
index a70475fb05f024e1b580317c0e8723ad4a574c73..f0ffaf491cd9c204b24a49aacf4d9712148cdf32 100644 (file)
--- a/README
+++ b/README
@@ -784,6 +784,22 @@ The following options need to be configured:
                as a convenience, when switching between booting from
                RAM and NFS.
 
+- Bootcount:
+               CONFIG_BOOTCOUNT_LIMIT
+               Implements a mechanism for detecting a repeating reboot
+               cycle, see:
+               http://www.denx.de/wiki/view/DULG/UBootBootCountLimit
+
+               CONFIG_BOOTCOUNT_ENV
+               If no softreset save registers are found on the hardware
+               "bootcount" is stored in the environment. To prevent a
+               saveenv on all reboots, the environment variable
+               "upgrade_available" is used. If "upgrade_available" is
+               0, "bootcount" is always 0, if "upgrade_available" is
+               1 "bootcount" is incremented in the environment.
+               So the Userspace Applikation must set the "upgrade_available"
+               and "bootcount" variable to 0, if a boot was successfully.
+
 - Pre-Boot Commands:
                CONFIG_PREBOOT
 
@@ -4303,6 +4319,9 @@ Low Level (hardware related) configuration options:
 
                NOTE : currently only supported on AM335x platforms.
 
+- CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC:
+               Enables the RTC32K OSC on AM33xx based plattforms
+
 Freescale QE/FMAN Firmware Support:
 -----------------------------------