[FE training-materials-updates] Kernel cross-compiling: a few more details about nboot

[Michael Opdenacker]

Repository : git://git.free-electrons.com/training-materials.git

On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=77da8fc294fe3da3f94d423688c6acf903099c66

>---------------------------------------------------------------

commit 77da8fc294fe3da3f94d423688c6acf903099c66
Author: Michael Opdenacker <michael.opdenacker at free-electrons.com>
Date:   Wed Nov 20 11:18:34 2013 +0100

    Kernel cross-compiling: a few more details about nboot
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at free-electrons.com>


>---------------------------------------------------------------

77da8fc294fe3da3f94d423688c6acf903099c66
 .../sysdev-kernel-cross-compiling.tex              |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex b/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex
index 914fe33..b400c55 100644
--- a/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex
+++ b/labs/sysdev-kernel-cross-compiling/sysdev-kernel-cross-compiling.tex
@@ -222,7 +222,9 @@ bootm 0x80000000 - 0x81000000
 \end{verbatim}
 
 \code{nboot} copies the kernel to RAM, using the \code{uImage} headers
-to know how many bytes to copy \footnote{\code{nboot} can save a lot 
+to know how many bytes to copy. You could have used \code{nand read
+0x80000000 0x300000 0x500000}, but you would have copied more bytes than
+the actual size of your kernel. \footnote{\code{nboot} can save a lot 
 of boot time, as it avoids having to copy a pessimistic number of
 bytes from flash to RAM. Note that U-boot is not always configured
 with \code{nboot} support.}.