diff options
| author | Matthew Garrett <matthew.garrett@nebula.com> | 2013-04-15 13:09:46 -0700 |
|---|---|---|
| committer | Matt Fleming <matt.fleming@intel.com> | 2013-04-15 21:31:09 +0100 |
| commit | cc5a080c5d40c36089bb08a8a16fa3fc7047fe0f (patch) | |
| tree | bd3160fc5b3ce71036d5e218ecd5e3dbf1632d02 /arch/x86/include/uapi/asm/bootparam.h | |
| parent | 0635eb8a54cf0fea64b174bb68bc36b9c3d622db (diff) | |
efi: Pass boot services variable info to runtime code
EFI variables can be flagged as being accessible only within boot services.
This makes it awkward for us to figure out how much space they use at
runtime. In theory we could figure this out by simply comparing the results
from QueryVariableInfo() to the space used by all of our variables, but
that fails if the platform doesn't garbage collect on every boot. Thankfully,
calling QueryVariableInfo() while still inside boot services gives a more
reliable answer. This patch passes that information from the EFI boot stub
up to the efi platform code.
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'arch/x86/include/uapi/asm/bootparam.h')
| -rw-r--r-- | arch/x86/include/uapi/asm/bootparam.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/uapi/asm/bootparam.h b/arch/x86/include/uapi/asm/bootparam.h index c15ddaf90710..08744242b8d2 100644 --- a/arch/x86/include/uapi/asm/bootparam.h +++ b/arch/x86/include/uapi/asm/bootparam.h @@ -6,6 +6,7 @@ #define SETUP_E820_EXT 1 #define SETUP_DTB 2 #define SETUP_PCI 3 +#define SETUP_EFI_VARS 4 /* ram_size flags */ #define RAMDISK_IMAGE_START_MASK 0x07FF |