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upl: Add support for writing a upl handoff

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Universal Payload provides a standard way of handing off control between
two firmware phases. Add support for writing the handoff information from
a structure.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2024-08-07 16:47:28 -06:00
committed by Tom Rini
parent 90469da3da
commit 3848e97c5c
3 changed files with 631 additions and 0 deletions
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8
boot/Kconfig
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@@ -748,6 +748,7 @@ config BOOTMETH_SCRIPT
config UPL
bool "upl - Universal Payload Specification"
imply UPL_READ
imply UPL_WRITE
help
Provides support for UPL payloads and handoff information. U-Boot
supports generating and accepting handoff information. The mkimage
@@ -762,6 +763,13 @@ config UPL_READ
which can be used elsewhere in U-Boot. This is just the reading
implementation, useful for trying it out.
config UPL_WRITE
bool "upl - Support writing a Universal Payload handoff"
help
Provides support for encoding a UPL-format payload from a C structure
so it can be passed to another program. This is just the writing
implementation, useful for trying it out.
endif # UPL
endif # BOOTSTD