diff options
Diffstat (limited to 'mok.c')
| -rw-r--r-- | mok.c | 23 |
1 files changed, 18 insertions, 5 deletions
@@ -261,6 +261,9 @@ static const uint8_t null_sha256[32] = { 0, }; typedef UINTN SIZE_T; +#define EFI_MAJOR_VERSION(tablep) ((UINT16)((((tablep)->Hdr.Revision) >> 16) & 0xfffful)) +#define EFI_MINOR_VERSION(tablep) ((UINT16)(((tablep)->Hdr.Revision) & 0xfffful)) + static EFI_STATUS get_max_var_sz(UINT32 attrs, SIZE_T *max_var_szp) { @@ -270,11 +273,21 @@ get_max_var_sz(UINT32 attrs, SIZE_T *max_var_szp) uint64_t max_var_sz = 0; *max_var_szp = 0; - efi_status = gRT->QueryVariableInfo(attrs, &max_storage_sz, - &remaining_sz, &max_var_sz); - if (EFI_ERROR(efi_status)) { - perror(L"Could not get variable storage info: %r\n", efi_status); - return efi_status; + if (EFI_MAJOR_VERSION(gRT) < 2) { + dprint(L"EFI %d.%d; no RT->QueryVariableInfo(). Using 1024!\n", + EFI_MAJOR_VERSION(gRT), EFI_MINOR_VERSION(gRT)); + max_var_sz = remaining_sz = max_storage_sz = 1024; + efi_status = EFI_SUCCESS; + } else { + dprint(L"calling RT->QueryVariableInfo() at 0x%lx\n", + gRT->QueryVariableInfo); + efi_status = gRT->QueryVariableInfo(attrs, &max_storage_sz, + &remaining_sz, &max_var_sz); + if (EFI_ERROR(efi_status)) { + perror(L"Could not get variable storage info: %r\n", + efi_status); + return efi_status; + } } /* |