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| author | Nayna Jain <nayna@linux.ibm.com> | 2019-11-11 06:10:33 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-11-12 16:33:22 +0300 |
| commit | 9155e2341aa8b5df057dc1c77633b33d1a4f17d2 (patch) | |
| tree | 294435e811fa6529203d26b553e4c50fd12dc41a /arch/powerpc/platforms/powernv/opal.c | |
| parent | 39a963b457b5c6cbbdc70441c9d496e39d151582 (diff) | |
| download | linux-9155e2341aa8b5df057dc1c77633b33d1a4f17d2.tar.xz | |
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/platforms/powernv/opal.c')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index 38e90270280b..8355bcd00f93 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -1002,6 +1002,9 @@ static int __init opal_init(void) /* Initialise OPAL Power control interface */ opal_power_control_init(); + /* Initialize OPAL secure variables */ + opal_pdev_init("ibm,secvar-backend"); + return 0; } machine_subsys_initcall(powernv, opal_init); |