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fit: fdt overlays doc

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Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Reviewed-by: Łukasz Majewski
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Pantelis Antoniou 2017-09-04 23:12:17 +03:00 • committed by Simon Glass
parent 169043d826
commit 6b54e50b5a
3 changed files with 236 additions and 3 deletions
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12
doc/uImage.FIT/command_syntax_extensions.txt
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@ -36,7 +36,7 @@ Old uImage:
New uImage:
8. bootm <addr1>
9. bootm [<addr1>]:<subimg1>
10. bootm [<addr1>]#<conf>
10. bootm [<addr1>]#<conf>[#<extra-conf[#...]]
11. bootm [<addr1>]:<subimg1> [<addr2>]:<subimg2>
12. bootm [<addr1>]:<subimg1> [<addr2>]:<subimg2> [<addr3>]:<subimg3>
13. bootm [<addr1>]:<subimg1> [<addr2>]:<subimg2> <addr3>
@ -129,6 +129,12 @@ following syntax:
- new uImage configuration specification
<addr>#<configuration unit_name>
- new uImage configuration specification with extra configuration components
<addr>#<configuration unit_name>[#<extra configuration unit_name>[#..]]
The extra configuration currently is supported only for additional device tree
overlays to apply on the base device tree supplied by the first configuration
unit.
Examples:
@ -138,6 +144,10 @@ bootm 200000:kernel@1
- boot configuration "cfg@1" from a new uImage located at 200000:
bootm 200000#cfg@1
- boot configuration "cfg@1" with extra "cfg@2" from a new uImage located
at 200000:
bootm 200000#cfg@1#cfg@2
- boot "kernel@1" from a new uImage at 200000 with initrd "ramdisk@2" found in
some other new uImage stored at address 800000:
bootm 200000:kernel@1 800000:ramdisk@2