diff options
Diffstat (limited to 'lib/efi_loader/efi_var_mem.c')
| -rw-r--r-- | lib/efi_loader/efi_var_mem.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/efi_loader/efi_var_mem.c b/lib/efi_loader/efi_var_mem.c index d155f25f60e..3d335a82746 100644 --- a/lib/efi_loader/efi_var_mem.c +++ b/lib/efi_loader/efi_var_mem.c @@ -10,7 +10,13 @@ #include <efi_variable.h> #include <u-boot/crc.h> -struct efi_var_file __efi_runtime_data *efi_var_buf; +/* + * The variables efi_var_file and efi_var_entry must be static to avoid + * referencing them via the global offset table (section .got). The GOT + * is neither mapped as EfiRuntimeServicesData nor do we support its + * relocation during SetVirtualAddressMap(). + */ +static struct efi_var_file __efi_runtime_data *efi_var_buf; static struct efi_var_entry __efi_runtime_data *efi_current_var; /** @@ -339,3 +345,8 @@ efi_get_next_variable_name_mem(efi_uintn_t *variable_name_size, return EFI_SUCCESS; } + +void efi_var_buf_update(struct efi_var_file *var_buf) +{ + memcpy(efi_var_buf, var_buf, EFI_VAR_BUF_SIZE); +} |