svn commit: r330257 - in head/sys: dev/efidev sys

[Ian Lepore]

Author: ian
Date: Thu Mar  1 22:57:14 2018
New Revision: 330257
URL: https://svnweb.freebsd.org/changeset/base/330257

Log:
  Add a function to retrieve the EFI realtime clock capabilities.

Modified:
  head/sys/dev/efidev/efirt.c
  head/sys/sys/efi.h

Modified: head/sys/dev/efidev/efirt.c
==============================================================================
--- head/sys/dev/efidev/efirt.c	Thu Mar  1 22:38:21 2018	(r330256)
+++ head/sys/dev/efidev/efirt.c	Thu Mar  1 22:57:14 2018	(r330257)
@@ -241,7 +241,7 @@ efi_get_table(struct uuid *uuid, void **ptr)
 }
 
 static int
-efi_get_time_locked(struct efi_tm *tm)
+efi_get_time_locked(struct efi_tm *tm, struct efi_tmcap *tmcap)
 {
 	efi_status status;
 	int error;
@@ -250,7 +250,7 @@ efi_get_time_locked(struct efi_tm *tm)
 	error = efi_enter();
 	if (error != 0)
 		return (error);
-	status = efi_runtime->rt_gettime(tm, NULL);
+	status = efi_runtime->rt_gettime(tm, tmcap);
 	efi_leave();
 	error = efi_status_to_errno(status);
 	return (error);
@@ -264,7 +264,21 @@ efi_get_time(struct efi_tm *tm)
 	if (efi_runtime == NULL)
 		return (ENXIO);
 	EFI_TIME_LOCK()
-	error = efi_get_time_locked(tm);
+	error = efi_get_time_locked(tm, NULL);
+	EFI_TIME_UNLOCK()
+	return (error);
+}
+
+int
+efi_get_time_capabilities(struct efi_tmcap *tmcap)
+{
+	struct efi_tm dummy;
+	int error;
+
+	if (efi_runtime == NULL)
+		return (ENXIO);
+	EFI_TIME_LOCK()
+	error = efi_get_time_locked(&dummy, tmcap);
 	EFI_TIME_UNLOCK()
 	return (error);
 }

Modified: head/sys/sys/efi.h
==============================================================================
--- head/sys/sys/efi.h	Thu Mar  1 22:38:21 2018	(r330256)
+++ head/sys/sys/efi.h	Thu Mar  1 22:57:14 2018	(r330257)
@@ -179,6 +179,7 @@ void efi_destroy_1t1_map(void);
 int efi_rt_ok(void);
 int efi_get_table(struct uuid *uuid, void **ptr);
 int efi_get_time(struct efi_tm *tm);
+int efi_get_time_capabilities(struct efi_tmcap *tmcap);
 int efi_reset_system(void);
 int efi_set_time(struct efi_tm *tm);
 int efi_var_get(uint16_t *name, struct uuid *vendor, uint32_t *attrib,