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[RFC,3/5] capsule: Add the capsule-key property for removal from devicetree

Message ID 20230826090633.239342-4-sughosh.ganu@linaro.org
State New
Headers show
Series Allow for removal of DT nodes and properties | expand

Commit Message

Sughosh Ganu Aug. 26, 2023, 9:06 a.m. UTC 
The capsule-key property contains the public key in the form of an EFI
Signature List(ESL) structure. This property is relevant only in
U-Boot, and is not to be passed to the OS. Register for purging this
property from the devicetree, before passing it to the OS.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
---
 lib/efi_loader/efi_capsule.c | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/lib/efi_loader/efi_capsule.c b/lib/efi_loader/efi_capsule.c
index af8a2ee940..5c6c87458f 100644
--- a/lib/efi_loader/efi_capsule.c
+++ b/lib/efi_loader/efi_capsule.c
@@ -9,6 +9,7 @@ 
 #define LOG_CATEGORY LOGC_EFI
 
 #include <common.h>
+#include <dt-structs.h>
 #include <efi_loader.h>
 #include <efi_variable.h>
 #include <env.h>
@@ -403,6 +404,12 @@  out:
 
 	return status;
 }
+
+DT_NON_COMPLIANT_PURGE(capsule_key) = {
+	.node_path	= "/signature",
+	.prop		= "capsule-key",
+};
+
 #endif /* CONFIG_EFI_CAPSULE_AUTHENTICATE */
 
 static __maybe_unused bool fwu_empty_capsule(struct efi_capsule_header *capsule)