The runtime service GetNextVariable() returns the length of the next
variable including the closing 0x0000. This length should be in bytes.
Comparing the output of EDK2 and U-Boot shows that this is currently not
correctly implemented:
EDK2:
OsIndicationsSupported: 46
PlatformLang: 26
PlatformLangCodes: 36
U-Boot:
OsIndicationsSupported: 23
PlatformLang: 13
PlatformLangCodes: 18
Provide correct length in GetNextVariable().
Fixes: d99a87f84b75 ("efi_loader: implement GetNextVariableName()")
Signed-off-by: Heinrich Schuchardt <[email protected]>
---
lib/efi_loader/efi_variable.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/efi_loader/efi_variable.c b/lib/efi_loader/efi_variable.c
index c316bdfec0..04ead34c6f 100644
--- a/lib/efi_loader/efi_variable.c
+++ b/lib/efi_loader/efi_variable.c
@@ -299,7 +299,7 @@ static efi_status_t parse_uboot_variable(char *variable,
p = variable_name;
utf8_utf16_strncpy(&p, name, name_len);
variable_name[name_len] = 0;
- *variable_name_size = name_len + 1;
+ *variable_name_size = sizeof(u16) * (name_len + 1);
/* guid */
c = *(name - 1);
--
2.25.1
