diff options
| author | Ilias Apalodimas | 2024-04-18 15:54:51 +0300 |
|---|---|---|
| committer | Heinrich Schuchardt | 2024-04-20 08:22:24 +0200 |
| commit | bc3dd2493ef8c3c646aaeb3854a3f83558c50102 (patch) | |
| tree | 596d9f6fb7ef47ce60074c1da5e8c07f82a67b0b /include/efi_loader.h | |
| parent | c28d32f946f0d1c0780a02ab49dc2c1835370501 (diff) | |
efi_loader: Add OS notifications for SetVariable at runtime
Previous patches enable SetVariable at runtime using a volatile storage
backend using EFI_RUNTIME_SERVICES_DATA allocared memory. Since there's
no recommendation from the spec on how to notify the OS, add a volatile
EFI variable that contains the filename relative to the ESP. OS'es
can use that file and update it at runtime
$~ efivar -p -n b2ac5fc9-92b7-4acd-aeac-11e818c3130c-RTStorageVolatile
GUID: b2ac5fc9-92b7-4acd-aeac-11e818c3130c
Name: "RTStorageVolatile"
Attributes:
Boot Service Access
Runtime Service Access
Value:
00000000 75 62 6f 6f 74 65 66 69 2e 76 61 72 00 |ubootefi.var. |
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Diffstat (limited to 'include/efi_loader.h')
| -rw-r--r-- | include/efi_loader.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/efi_loader.h b/include/efi_loader.h index bb51c028177..69442f4e58d 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -159,6 +159,10 @@ static inline void efi_set_bootdev(const char *dev, const char *devnr, #define EFICONFIG_AUTO_GENERATED_ENTRY_GUID \ EFI_GUID(0x8108ac4e, 0x9f11, 0x4d59, \ 0x85, 0x0e, 0xe2, 0x1a, 0x52, 0x2c, 0x59, 0xb2) +#define U_BOOT_EFI_RT_VAR_FILE_GUID \ + EFI_GUID(0xb2ac5fc9, 0x92b7, 0x4acd, \ + 0xae, 0xac, 0x11, 0xe8, 0x18, 0xc3, 0x13, 0x0c) + /* Use internal device tree when starting UEFI application */ #define EFI_FDT_USE_INTERNAL NULL |