Merge pull request #10804 from poettering/sd-boot-updates

various sd-boot/EFI fixes (split out from #10495)

diff --cc src/boot/efi/util.c
index b70777292e0ba9e20501217222b43798654dc3b0,320b12ef850d893c8c57026c2f5cb2926ee5054a..f1f1674c59493f031db986044fbd5c699948a7a3
--- 1/src/boot/efi/util.c
--- 2/src/boot/efi/util.c
+++ b/src/boot/efi/util.c
@@@ -56,10 -56,13 +56,13 @@@ UINT64 time_usec(VOID) 
                          return 0;
          }
  
 -        return 1000 * 1000 * ticks / freq;
 +        return 1000UL * 1000UL * ticks / freq;
  }
  
- EFI_STATUS parse_boolean(CHAR8 *v, BOOLEAN *b) {
+ EFI_STATUS parse_boolean(const CHAR8 *v, BOOLEAN *b) {
+         if (!v)
+                 return EFI_INVALID_PARAMETER;
+ 
          if (strcmpa(v, (CHAR8 *)"1") == 0 ||
              strcmpa(v, (CHAR8 *)"yes") == 0 ||
              strcmpa(v, (CHAR8 *)"y") == 0 ||