diff options
| author | Nayna Jain <nayna@linux.ibm.com> | 2019-11-10 21:10:33 -0600 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-11-13 00:33:22 +1100 |
| commit | 9155e2341aa8b5df057dc1c77633b33d1a4f17d2 (patch) | |
| tree | 294435e811fa6529203d26b553e4c50fd12dc41a /arch/powerpc/include/asm/secvar.h | |
| parent | 39a963b457b5c6cbbdc70441c9d496e39d151582 (diff) | |
| download | linux-9155e2341aa8b5df057dc1c77633b33d1a4f17d2.tar.bz2 | |
powerpc/powernv: Add OPAL API interface to access secure variable
The X.509 certificates trusted by the platform and required to secure
boot the OS kernel are wrapped in secure variables, which are
controlled by OPAL.
This patch adds firmware/kernel interface to read and write OPAL
secure variables based on the unique key.
This support can be enabled using CONFIG_OPAL_SECVAR.
Signed-off-by: Claudio Carvalho <cclaudio@linux.ibm.com>
Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
Signed-off-by: Eric Richter <erichte@linux.ibm.com>
[mpe: Make secvar_ops __ro_after_init, only build opal-secvar.c if PPC_SECURE_BOOT=y]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1573441836-3632-2-git-send-email-nayna@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include/asm/secvar.h')
| -rw-r--r-- | arch/powerpc/include/asm/secvar.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/secvar.h b/arch/powerpc/include/asm/secvar.h new file mode 100644 index 000000000000..4cc35b58b986 --- /dev/null +++ b/arch/powerpc/include/asm/secvar.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2019 IBM Corporation + * Author: Nayna Jain + * + * PowerPC secure variable operations. + */ +#ifndef SECVAR_OPS_H +#define SECVAR_OPS_H + +#include <linux/types.h> +#include <linux/errno.h> + +extern const struct secvar_operations *secvar_ops; + +struct secvar_operations { + int (*get)(const char *key, uint64_t key_len, u8 *data, + uint64_t *data_size); + int (*get_next)(const char *key, uint64_t *key_len, + uint64_t keybufsize); + int (*set)(const char *key, uint64_t key_len, u8 *data, + uint64_t data_size); +}; + +#ifdef CONFIG_PPC_SECURE_BOOT + +extern void set_secvar_ops(const struct secvar_operations *ops); + +#else + +static inline void set_secvar_ops(const struct secvar_operations *ops) { } + +#endif + +#endif |