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[v11,15/15] doc: capsule: Document the new mechanism to embed ESL file into dtb

Message ID 20230822174008.626239-16-sughosh.ganu@linaro.org
State Accepted
Commit 1df1d566d21f52703511e55fadd72993a137a464
Headers show
Series Integrate EFI capsule tasks into U-Boot's build flow | expand

Commit Message

Sughosh Ganu Aug. 22, 2023, 5:40 p.m. UTC 
Update the document to specify how the EFI Signature List(ESL) file
can be embedded into the platform's dtb as part of the U-Boot build.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
---
Changes since V10: None

 doc/develop/uefi/uefi.rst | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)
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Patch

diff --git a/doc/develop/uefi/uefi.rst b/doc/develop/uefi/uefi.rst
index f27cabbcce..68f9b332d1 100644
--- a/doc/develop/uefi/uefi.rst
+++ b/doc/develop/uefi/uefi.rst
@@ -562,20 +562,11 @@  and used by the steps highlighted below.
             ...
     }
 
-You can do step-4 manually with
-
-.. code-block:: console
-
-    $ dtc -@ -I dts -O dtb -o signature.dtbo signature.dts
-    $ fdtoverlay -i orig.dtb -o new.dtb -v signature.dtbo
-
-where signature.dts looks like::
-
-    &{/} {
-            signature {
-                    capsule-key = /incbin/("CRT.esl");
-            };
-    };
+You can perform step-4 through the Kconfig symbol
+CONFIG_EFI_CAPSULE_ESL_FILE. This symbol points to the esl file
+generated in step-2. Once the symbol has been populated with the path
+to the esl file, it will automatically get embedded into the
+platform's dtb as part of U-Boot build.
 
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