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path: root/drivers/firmware/efi/libstub/efi-stub-helper.c
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Diffstat (limited to 'drivers/firmware/efi/libstub/efi-stub-helper.c')
-rw-r--r--drivers/firmware/efi/libstub/efi-stub-helper.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c
index e94975f4655b..e4610e72b78f 100644
--- a/drivers/firmware/efi/libstub/efi-stub-helper.c
+++ b/drivers/firmware/efi/libstub/efi-stub-helper.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Helper functions used by the EFI stub on multiple
* architectures. This should be #included by the EFI stub
* implementation files.
*
* Copyright 2011 Intel Corporation; author Matt Fleming
- *
- * This file is part of the Linux kernel, and is made available
- * under the terms of the GNU General Public License version 2.
- *
*/
#include <linux/efi.h>
@@ -34,6 +31,7 @@ static unsigned long __chunk_size = EFI_READ_CHUNK_SIZE;
static int __section(.data) __nokaslr;
static int __section(.data) __quiet;
+static int __section(.data) __novamap;
int __pure nokaslr(void)
{
@@ -43,6 +41,10 @@ int __pure is_quiet(void)
{
return __quiet;
}
+int __pure novamap(void)
+{
+ return __novamap;
+}
#define EFI_MMAP_NR_SLACK_SLOTS 8
@@ -482,6 +484,11 @@ efi_status_t efi_parse_options(char const *cmdline)
__chunk_size = -1UL;
}
+ if (!strncmp(str, "novamap", 7)) {
+ str += strlen("novamap");
+ __novamap = 1;
+ }
+
/* Group words together, delimited by "," */
while (*str && *str != ' ' && *str != ',')
str++;