https://bugzilla.tianocore.org/show_bug.cgi?id=3338 states:

When an application client displays or otherwise makes the EUI-64 identifiers visible to a user, the values should be displayed in hexadecimal format with byte 7 first (i.e., on the left) and byte 0 last regardless of the internal representation of the EUI-64.

Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com --- lib/efi_loader/efi_device_path_to_text.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/efi_loader/efi_device_path_to_text.c b/lib/efi_loader/efi_device_path_to_text.c index 4d73954ef8..80ce03dec9 100644 --- a/lib/efi_loader/efi_device_path_to_text.c +++ b/lib/efi_loader/efi_device_path_to_text.c @@ -190,13 +190,14 @@ static char *dp_msging(char *s, struct efi_device_path *dp) struct efi_device_path_nvme *ndp = (struct efi_device_path_nvme *)dp; u32 ns_id; - int i;

memcpy(&ns_id, &ndp->ns_id, sizeof(ns_id)); s += sprintf(s, "NVMe(0x%x,", ns_id); - for (i = 0; i < sizeof(ndp->eui64); ++i) + + /* Display byte 7 first, byte 0 last */ + for (int i = 0; i < 8; ++i) s += sprintf(s, "%s%02x", i ? "-" : "", - ndp->eui64[i]); + ndp->eui64[i ^ 7]); s += sprintf(s, ")");

break;