Refactoring parts of the common USB OHCI code

[u-boot] / README

diff --git a/README b/README
index 5135281ddc64cf84d0ec080142983956d74eea99..ccd839ca25828c2be9d2ac576259b443d0704792 100644 (file)
--- a/README
+++ b/README
@@ -60,10 +60,10 @@ Where to get help:
 
 In case you have questions about, problems with or contributions for
 U-Boot you should send a message to the U-Boot mailing list at
-<u-boot-users@lists.sourceforge.net>. There is also an archive of
-previous traffic on the mailing list - please search the archive
-before asking FAQ's. Please see
-http://lists.sourceforge.net/lists/listinfo/u-boot-users/
+<u-boot@lists.denx.de>. There is also an archive of previous traffic
+on the mailing list - please search the archive before asking FAQ's.
+Please see http://lists.denx.de/pipermail/u-boot and
+http://dir.gmane.org/gmane.comp.boot-loaders.u-boot
 
 
 Where to get source code:
@@ -1044,6 +1044,29 @@ The following options need to be configured:
                the malloc area (as defined by CFG_MALLOC_LEN) should
                be at least 4MB.
 
+               CONFIG_LZMA
+
+               If this option is set, support for lzma compressed
+               images is included.
+
+               Note: The LZMA algorithm adds between 2 and 4KB of code and it
+               requires an amount of dynamic memory that is given by the
+               formula:
+
+                       (1846 + 768 << (lc + lp)) * sizeof(uint16)
+
+               Where lc and lp stand for, respectively, Literal context bits
+               and Literal pos bits.
+
+               This value is upper-bounded by 14MB in the worst case. Anyway,
+               for a ~4MB large kernel image, we have lc=3 and lp=0 for a
+               total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is
+               a very small buffer.
+
+               Use the lzmainfo tool to determinate the lc and lp values and
+               then calculate the amount of needed dynamic memory (ensuring
+               the appropriate CFG_MALLOC_LEN value).
+
 - MII/PHY support:
                CONFIG_PHY_ADDR