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authorMarian Balakowicz <m8@semihalf.com>2008-03-12 12:13:13 +0100
committerMarian Balakowicz <m8@semihalf.com>2008-03-12 12:13:13 +0100
commit3310c549a73a949430bfda90876df7552a1dab0c (patch)
treebfd832e22703cef3ecf67462e82bbf6008a3e4a4 /README
parent1ec73761d2e247078f4520a265d463e8b73391a2 (diff)
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[new uImage] Add new uImage format documentation and examples
Create doc/uImage.FIT documentation directory with the following files: - command_syntax_extensions.txt : extended command syntax description - howto.txt : short usage howto - source_file_format.txt : internal new uImage format description Add example image source files: - kernel.its - kernel_fdt.its - multi.its Update README appropriately. Signed-off-by: Marian Balakowicz <m8@semihalf.com> Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>
Diffstat (limited to 'README')
-rw-r--r--README30
1 files changed, 26 insertions, 4 deletions
diff --git a/README b/README
index 0ed47f0..26bd0cf 100644
--- a/README
+++ b/README
@@ -2684,6 +2684,14 @@ Some configuration options can be set using Environment Variables:
configuration from the BOOTP server, but not try to
load any image using TFTP
+ autoscript - if set to "yes" commands like "loadb", "loady",
+ "bootp", "tftpb", "rarpboot" and "nfs" will attempt
+ to automatically run script images (by internally
+ calling "autoscript").
+
+ autoscript_uname - if script image is in a format (FIT) this
+ variable is used to get script subimage unit name.
+
autostart - if set to "yes", an image loaded using the "bootp",
"rarpboot", "tftpboot" or "diskboot" commands will
be automatically started (by internally calling
@@ -2898,10 +2906,24 @@ o If neither SROM nor the environment contain a MAC address, an error
Image Formats:
==============
-The "boot" commands of this monitor operate on "image" files which
-can be basicly anything, preceeded by a special header; see the
-definitions in include/image.h for details; basicly, the header
-defines the following image properties:
+U-Boot is capable of booting (and performing other auxiliary operations on)
+images in two formats:
+
+New uImage format (FIT)
+-----------------------
+
+Flexible and powerful format based on Flattened Image Tree -- FIT (similar
+to Flattened Device Tree). It allows the use of images with multiple
+components (several kernels, ramdisks, etc.), with contents protected by
+SHA1, MD5 or CRC32. More details are found in the doc/uImage.FIT directory.
+
+
+Old uImage format
+-----------------
+
+Old image format is based on binary files which can be basically anything,
+preceded by a special header; see the definitions in include/image.h for
+details; basically, the header defines the following image properties:
* Target Operating System (Provisions for OpenBSD, NetBSD, FreeBSD,
4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks,