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author | David S. Miller <davem@davemloft.net> | 2009-04-14 01:41:05 +0400 |
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committer | David S. Miller <davem@davemloft.net> | 2009-04-14 01:41:05 +0400 |
commit | 83400207a07584539366f6859362db6872809a12 (patch) | |
tree | fad187f8b3bebf1b387ec42ef8143e6f4e49a256 /arch/frv/include/asm/mem-layout.h | |
parent | 0d489ffb76de0fe804cf06a9d4d11fa7342d74b9 (diff) | |
parent | 80a04d3f2f94fb68b5df05e3ac6697130bc3467a (diff) | |
download | linux-83400207a07584539366f6859362db6872809a12.tar.xz |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
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Diffstat (limited to 'arch/frv/include/asm/mem-layout.h')
-rw-r--r-- | arch/frv/include/asm/mem-layout.h | 86 |
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 000000000000..2947764fc0e0 --- /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_KMALLOC_MINALIGN 8 +#define ARCH_SLAB_MINALIGN 8 + +/*****************************************************************************/ +/* + * 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 */ |