[bootlin/training-materials updates] master: boot-time labs: explain where U-boot environment is stored (bd810451)

[Michael Opdenacker]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/bd81045154767ecb812a8582858d9683fd256129

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commit bd81045154767ecb812a8582858d9683fd256129
Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
Date:   Fri Oct 22 10:00:53 2021 +0200

    boot-time labs: explain where U-boot environment is stored
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>


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bd81045154767ecb812a8582858d9683fd256129
 .../boot-time-build-kernel-and-start-system.tex                        | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/labs/boot-time-build-kernel-and-start-system/boot-time-build-kernel-and-start-system.tex b/labs/boot-time-build-kernel-and-start-system/boot-time-build-kernel-and-start-system.tex
index 6f782567..fde2a17d 100644
--- a/labs/boot-time-build-kernel-and-start-system/boot-time-build-kernel-and-start-system.tex
+++ b/labs/boot-time-build-kernel-and-start-system/boot-time-build-kernel-and-start-system.tex
@@ -199,6 +199,9 @@ Last but not least, save your changes:
 saveenv
 \end{verbatim}
 
+This saves the environment in a \code{uboot.env} file in the FAT32
+partition of the SD card.
+
 \section{Testing time!}
 
 First, connect the USB webcam provided by your instructor, and point it