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boot: Add firmware_devicetree_exists()

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anonymix007 2024-11-05 22:17:21 +03:00
parent e6cb29fa0f
commit 1c3a0a4b1f
2 changed files with 5 additions and 0 deletions
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4
src/boot/efi/devicetree.c
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@ -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

1
src/boot/efi/devicetree.h
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@ -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);