Initial import

1 files changed, 86 insertions, 0 deletions

diff --git a/arch/frv/include/asm/mem-layout.h b/arch/frv/include/asm/mem-layout.h
new file mode 100644
index 000000000..e9a0ec85a
--- /dev/null
+++ b/arch/frv/include/asm/mem-layout.h
@@ -0,0 +1,86 @@
+/* mem-layout.h: memory layout
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_MEM_LAYOUT_H
+#define _ASM_MEM_LAYOUT_H
+
+#ifndef __ASSEMBLY__
+#define __UL(X)	((unsigned long) (X))
+#else
+#define __UL(X)	(X)
+#endif
+
+/*
+ * PAGE_SHIFT determines the page size
+ */
+#define PAGE_SHIFT			14
+
+#ifndef __ASSEMBLY__
+#define PAGE_SIZE			(1UL << PAGE_SHIFT)
+#else
+#define PAGE_SIZE			(1 << PAGE_SHIFT)
+#endif
+
+#define PAGE_MASK			(~(PAGE_SIZE-1))
+
+/*
+ * the slab must be aligned such that load- and store-double instructions don't
+ * fault if used
+ */
+#define	ARCH_DMA_MINALIGN		L1_CACHE_BYTES
+#define	ARCH_SLAB_MINALIGN		L1_CACHE_BYTES
+
+/*****************************************************************************/
+/*
+ * virtual memory layout from kernel's point of view
+ */
+#define PAGE_OFFSET			((unsigned long) &__page_offset)
+
+#ifdef CONFIG_MMU
+
+/* see Documentation/frv/mmu-layout.txt */
+#define KERNEL_LOWMEM_START		__UL(0xc0000000)
+#define KERNEL_LOWMEM_END		__UL(0xd0000000)
+#define VMALLOC_START			__UL(0xd0000000)
+#define VMALLOC_END			__UL(0xd8000000)
+#define PKMAP_BASE			__UL(0xd8000000)
+#define PKMAP_END			__UL(0xdc000000)
+#define KMAP_ATOMIC_SECONDARY_FRAME	__UL(0xdc000000)
+#define KMAP_ATOMIC_PRIMARY_FRAME	__UL(0xdd000000)
+
+#endif
+
+#define KERNEL_IO_START			__UL(0xe0000000)
+
+
+/*****************************************************************************/
+/*
+ * memory layout from userspace's point of view
+ */
+#define BRK_BASE			__UL(2 * 1024 * 1024 + PAGE_SIZE)
+#define STACK_TOP			__UL(2 * 1024 * 1024)
+#define STACK_TOP_MAX			__UL(0xc0000000)
+
+/* userspace process size */
+#ifdef CONFIG_MMU
+#define TASK_SIZE			(PAGE_OFFSET)
+#else
+#define TASK_SIZE			__UL(0xFFFFFFFFUL)
+#endif
+
+/* base of area at which unspecified mmaps will start */
+#ifdef CONFIG_BINFMT_ELF_FDPIC
+#define TASK_UNMAPPED_BASE		__UL(16 * 1024 * 1024)
+#else
+#define TASK_UNMAPPED_BASE		__UL(TASK_SIZE / 3)
+#endif
+
+#endif /* _ASM_MEM_LAYOUT_H */