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| author | Ge Song <ge.song@hxt-semitech.com> | 2018-08-02 17:29:36 +0000 |
|---|---|---|
| committer | Samuel Mendoza-Jonas <sam@mendozajonas.com> | 2018-08-07 11:30:36 +1000 |
| commit | a915889b7fbbc4be11f9a37ea7afb5b3f3d41173 (patch) | |
| tree | d0d1e8d524e086ded019c19f6c5e54c967f51fe0 /lib/efi/efivar.h | |
| parent | ec07742d2a37f8f96705fc0f20d9b22b583dad57 (diff) | |
| download | talos-petitboot-a915889b7fbbc4be11f9a37ea7afb5b3f3d41173.tar.gz talos-petitboot-a915889b7fbbc4be11f9a37ea7afb5b3f3d41173.zip | |
lib/efi: Add new routines to access efi variables
Provide methods to load/store petitboot's configuration on efi-based
platforms. A test case is also provided.
Signed-off-by: Ge Song <ge.song@hxt-semitech.com>
[Cleanup file comments, make efivarfs_path static.]
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Diffstat (limited to 'lib/efi/efivar.h')
| -rw-r--r-- | lib/efi/efivar.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/lib/efi/efivar.h b/lib/efi/efivar.h new file mode 100644 index 0000000..ebf73fa --- /dev/null +++ b/lib/efi/efivar.h @@ -0,0 +1,46 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Copyright (C) 2018 Huaxintong Semiconductor Technology Co.,Ltd. All rights + * reserved. + * Author: Ge Song <ge.song@hxt-semitech.com> + */ +#ifndef EFIVAR_H +#define EFIVAR_H + +#include <linux/magic.h> +#include <stdint.h> + +#define EFI_VARIABLE_NON_VOLATILE 0x00000001 +#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x00000002 +#define EFI_VARIABLE_RUNTIME_ACCESS 0x00000004 +#define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x00000008 +#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x00000010 +#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x00000020 +#define EFI_VARIABLE_APPEND_WRITE 0x00000040 + +#ifndef EFIVARFS_MAGIC +#define EFIVARFS_MAGIC 0xde5e81e4 +#endif + +void set_efivarfs_path(const char *path); +const char *get_efivarfs_path(void); + +int efi_get_variable(void *ctx, const char *guidstr, const char *name, + uint8_t **data, size_t *data_size, uint32_t *attributes); +int efi_set_variable(void *ctx, const char *guidstr, const char *name, + uint8_t *data, size_t data_size, uint32_t attributes); +int efi_del_variable(void *ctx, const char *guidstr, const char *name); + +#endif /* EFIVAR_H */ |
