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authorwdenk <wdenk>2003-05-23 23:18:21 +0000
committerwdenk <wdenk>2003-05-23 23:18:21 +0000
commit38b99261c13a54ea955a8fe9176e73256486362f (patch)
treef8ca312752f893652044b9ce05780d253750a27c /README
parent4c3b21a5f915988e3d9681cf9cb566bb7bd56859 (diff)
Add zero-copy ramdisk support (requires corresponding kernel support!)
Diffstat (limited to 'README')
-rw-r--r--README8
1 files changed, 8 insertions, 0 deletions
diff --git a/README b/README
index 4dfb292bf5a..ecc087ad914 100644
--- a/README
+++ b/README
@@ -1988,6 +1988,14 @@ Some configuration options can be set using Environment Variables:
setenv initrd_high 00c00000
+ If you set initrd_high to 0xFFFFFFFF, this is an
+ indication to U-Boot that all addresses are legal
+ for the Linux kernel, including addresses in flash
+ memory. In this case U-Boot will NOT COPY the
+ ramdisk at all. This may be useful to reduce the
+ boot time on your system, but requires that this
+ feature is supported by your Linux kernel.
+
ipaddr - IP address; needed for tftpboot command
loadaddr - Default load address for commands like "bootp",