Exynos5: Fix exynos5_get_periph_rate calculations

[karo-tx-uboot.git] / README

diff --git a/README b/README
index fefa71c0a6c5f3adf8ed437e6956227a0e502e8b..353d8db50062b9a19422126be344e189d7394a4c 100644 (file)
--- a/README
+++ b/README
@@ -1257,6 +1257,9 @@ The following options need to be configured:
                SoC, then define this variable and provide board
                specific code for the "hw_watchdog_reset" function.
 
+               CONFIG_AT91_HW_WDT_TIMEOUT
+               specify the timeout in seconds. default 2 seconds.
+
 - U-Boot Version:
                CONFIG_VERSION_VARIABLE
                If this variable is defined, an environment variable
@@ -2207,6 +2210,17 @@ CBFS (Coreboot Filesystem) support
                requests. Increasing this will allow U-Boot to accept offers
                from a BOOTP client in networks with unusually high latency.
 
+- BOOTP Random transaction ID:
+               CONFIG_BOOTP_RANDOM_ID
+
+               The standard algorithm to generate a DHCP/BOOTP transaction ID
+               by using the MAC address and the current time stamp may not
+               quite unlikely produce duplicate transaction IDs from different
+               clients in the same network. This option creates a transaction
+               ID using the rand() function. Provided that the RNG has been
+               seeded well, this should guarantee unique transaction IDs
+               always.
+
 - DHCP Advanced Options:
                You can fine tune the DHCP functionality by defining
                CONFIG_BOOTP_* symbols:
@@ -3176,8 +3190,13 @@ CBFS (Coreboot Filesystem) support
                This enables the RSA algorithm used for FIT image verification
                in U-Boot. See doc/uImage.FIT/signature.txt for more information.
 
+               The Modular Exponentiation algorithm in RSA is implemented using
+               driver model. So CONFIG_DM needs to be enabled by default for this
+               library to function.
+
                The signing part is build into mkimage regardless of this
-               option.
+               option. The software based modular exponentiation is built into
+               mkimage irrespective of this option.
 
 - bootcount support:
                CONFIG_BOOTCOUNT_LIMIT
@@ -5899,9 +5918,10 @@ option performs the converse operation of the mkimage's second form (the "-d"
 option). Given an image built by mkimage, the dumpimage extracts a "data file"
 from the image:
 
-       tools/dumpimage -i image -p position data_file
-         -i ==> extract from the 'image' a specific 'data_file', \
-          indexed by 'position'
+       tools/dumpimage -i image -T type -p position data_file
+         -i ==> extract from the 'image' a specific 'data_file'
+         -T ==> set image type to 'type'
+         -p ==> 'position' (starting at 0) of the 'data_file' inside the 'image'
 
 
 Installing a Linux Image: