Messages in this thread Patch in this message | | | Subject | [PATCH 2/5] efi: Add EFI_SECURE_BOOT bit | From | David Howells <> | Date | Wed, 24 May 2017 15:45:32 +0100 |
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From: Josh Boyer <jwboyer@fedoraproject.org>
UEFI machines can be booted in Secure Boot mode. Add a EFI_SECURE_BOOT bit that can be passed to efi_enabled() to find out whether secure boot is enabled.
This will be used by the SysRq+x handler, registered by the x86 arch, to find out whether secure boot mode is enabled so that it can be disabled.
Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org> Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-efi@vger.kernel.org ---
drivers/firmware/efi/secureboot.c | 1 + include/linux/efi.h | 1 + 2 files changed, 2 insertions(+)
diff --git a/drivers/firmware/efi/secureboot.c b/drivers/firmware/efi/secureboot.c index cf5bccae15e8..730518061a14 100644 --- a/drivers/firmware/efi/secureboot.c +++ b/drivers/firmware/efi/secureboot.c @@ -24,6 +24,7 @@ void __init efi_set_secure_boot(enum efi_secureboot_mode mode) pr_info("Secure boot disabled\n"); break; case efi_secureboot_mode_enabled: + set_bit(EFI_SECURE_BOOT, &efi.flags); pr_info("Secure boot enabled\n"); break; default: diff --git a/include/linux/efi.h b/include/linux/efi.h index e2f53edccf15..5e9a2d7df089 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1081,6 +1081,7 @@ extern int __init efi_setup_pcdp_console(char *); #define EFI_DBG 8 /* Print additional debug info at runtime */ #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ #define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */ +#define EFI_SECURE_BOOT 11 /* Are we in Secure Boot mode? */ #ifdef CONFIG_EFI /*
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