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authorMarkos Chandras <markos.chandras@imgtec.com>2014-07-21 17:35:54 +0400
committerRalf Baechle <ralf@linux-mips.org>2014-08-26 04:18:56 +0400
commit64316467dc99e6b38ed1ca2197aa93535a7750e0 (patch)
tree5720c6d0d4582b4f7e3d7a984e9efaa98dc33b8b /arch/mips
parentad61ba23f192f6d87a4e1f665f2d92ba2bae0950 (diff)
downloadlinux-64316467dc99e6b38ed1ca2197aa93535a7750e0.tar.xz
MIPS: EVA: Add new EVA header
Generic code may need to perform certain operations when EVA is enabled, for example, configure the segmentation registers during boot. In order to avoid using more CONFIG_EVA ifdefs in the arch code, such functions will be added in this header instead. Initially this header contains a macro which will be used by generic code later on during VPEs configuration on secondary cores. All it does is to call the platform specific EVA init code in case EVA is enabled. Reviewed-by: Paul Burton <paul.burton@imgtec.com> Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Patchwork: http://patchwork.linux-mips.org/patch/7422/ Signed-off-by: James Hogan <james.hogan@imgtec.com>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/include/asm/eva.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/mips/include/asm/eva.h b/arch/mips/include/asm/eva.h
new file mode 100644
index 000000000000..a3d1807f227c
--- /dev/null
+++ b/arch/mips/include/asm/eva.h
@@ -0,0 +1,43 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2014, Imagination Technologies Ltd.
+ *
+ * EVA functions for generic code
+ */
+
+#ifndef _ASM_EVA_H
+#define _ASM_EVA_H
+
+#include <kernel-entry-init.h>
+
+#ifdef __ASSEMBLY__
+
+#ifdef CONFIG_EVA
+
+/*
+ * EVA early init code
+ *
+ * Platforms must define their own 'platform_eva_init' macro in
+ * their kernel-entry-init.h header. This macro usually does the
+ * platform specific configuration of the segmentation registers,
+ * and it is normally called from assembly code.
+ *
+ */
+
+.macro eva_init
+platform_eva_init
+.endm
+
+#else
+
+.macro eva_init
+.endm
+
+#endif /* CONFIG_EVA */
+
+#endif /* __ASSEMBLY__ */
+
+#endif