From: anonymix007 <48598263+anonymix007@users.noreply.github.com>
Date: Tue, 5 Nov 2024 19:17:21 +0000 (+0300)
Subject: boot: Add firmware_devicetree_exists()
X-Git-Tag: v257-rc1~19^2~7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1c3a0a4b1f8a51f6f8f6c43e04306c2e53eaf65d;p=thirdparty%2Fsystemd.git

boot: Add firmware_devicetree_exists()
---

diff --git a/src/boot/efi/devicetree.c b/src/boot/efi/devicetree.c
index 7e77ed6e60d..f3563f296fb 100644
--- a/src/boot/efi/devicetree.c
+++ b/src/boot/efi/devicetree.c
@@ -174,6 +174,10 @@ static const char* devicetree_get_compatible(const void *dtb) {
         return NULL;
 }
 
+bool firmware_devicetree_exists(void) {
+        return !!find_configuration_table(MAKE_GUID_PTR(EFI_DTB_TABLE));
+}
+
 /* This function checks if the firmware provided Devicetree
  * and a UKI provided Devicetree contain the same first entry
  * on their respective "compatible" fields (which usually defines
diff --git a/src/boot/efi/devicetree.h b/src/boot/efi/devicetree.h
index 44c61fff6fd..5f6720f655a 100644
--- a/src/boot/efi/devicetree.h
+++ b/src/boot/efi/devicetree.h
@@ -30,6 +30,7 @@ typedef struct FdtHeader {
         uint32_t size_dt_struct;
 } FdtHeader;
 
+bool firmware_devicetree_exists(void);
 EFI_STATUS devicetree_match(const void *uki_dtb, size_t uki_dtb_length);
 EFI_STATUS devicetree_match_by_compatible(const void *uki_dtb, size_t uki_dtb_length, const char *compat);
 EFI_STATUS devicetree_install(struct devicetree_state *state, EFI_FILE *root_dir, char16_t *name);