diff mbox series

[v6,22/26] powerpc/pseries: Add helper to get PLPKS password length

Message ID 20230210080401.345462-23-ajd@linux.ibm.com
State New
Headers
Series pSeries dynamic secure boot secvar interface + platform keyring loading |

Commit Message

Andrew Donnellan Feb. 10, 2023, 8:03 a.m. UTC 
  From: Russell Currey <ruscur@russell.cc>

Add helper function to get the PLPKS password length. This will be used
in a later patch to support passing the password between kernels over
kexec.

Signed-off-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>

---

v3: New patch

v5: Drop plpks_get_password() since we no longer need to expose it.
---
 arch/powerpc/include/asm/plpks.h       | 5 +++++
 arch/powerpc/platforms/pseries/plpks.c | 5 +++++
 2 files changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/arch/powerpc/include/asm/plpks.h b/arch/powerpc/include/asm/plpks.h
index 0c49969b0864..757313e00521 100644
--- a/arch/powerpc/include/asm/plpks.h
+++ b/arch/powerpc/include/asm/plpks.h
@@ -171,6 +171,11 @@  u32 plpks_get_maxlargeobjectsize(void);
  */
 u64 plpks_get_signedupdatealgorithms(void);
 
+/**
+ * Returns the length of the PLPKS password in bytes.
+ */
+u16 plpks_get_passwordlen(void);
+
 #endif // CONFIG_PSERIES_PLPKS
 
 #endif // _ASM_POWERPC_PLPKS_H
diff --git a/arch/powerpc/platforms/pseries/plpks.c b/arch/powerpc/platforms/pseries/plpks.c
index 01ae919b4497..671a10acaebf 100644
--- a/arch/powerpc/platforms/pseries/plpks.c
+++ b/arch/powerpc/platforms/pseries/plpks.c
@@ -359,6 +359,11 @@  u64 plpks_get_signedupdatealgorithms(void)
 	return signedupdatealgorithms;
 }
 
+u16 plpks_get_passwordlen(void)
+{
+	return ospasswordlength;
+}
+
 bool plpks_is_available(void)
 {
 	int rc;