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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __ASM_SH64_PLATFORM_H
2#define __ASM_SH64_PLATFORM_H
3
4/*
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License. See the file "COPYING" in the main directory of this archive
7 * for more details.
8 *
9 * include/asm-sh64/platform.h
10 *
11 * Copyright (C) 2000, 2001 Paolo Alberelli
12 *
13 * benedict.gaster@superh.com: 3rd May 2002
14 * Added support for ramdisk, removing statically linked romfs at the same time.
15 */
16
17#include <linux/ioport.h>
18#include <asm/irq.h>
19
20
21/*
22 * Platform definition structure.
23 */
24struct sh64_platform {
25 unsigned int readonly_rootfs;
26 unsigned int ramdisk_flags;
27 unsigned int initial_root_dev;
28 unsigned int loader_type;
29 unsigned int initrd_start;
30 unsigned int initrd_size;
31 unsigned int fpu_flags;
32 unsigned int io_res_count;
33 unsigned int kram_res_count;
34 unsigned int xram_res_count;
35 unsigned int rom_res_count;
36 struct resource *io_res_p;
37 struct resource *kram_res_p;
38 struct resource *xram_res_p;
39 struct resource *rom_res_p;
40};
41
42extern struct sh64_platform platform_parms;
43
44extern unsigned long long memory_start, memory_end;
45
46extern unsigned long long fpu_in_use;
47
48extern int platform_int_priority[NR_INTC_IRQS];
49
50#define FPU_FLAGS (platform_parms.fpu_flags)
51#define STANDARD_IO_RESOURCES (platform_parms.io_res_count)
52#define STANDARD_KRAM_RESOURCES (platform_parms.kram_res_count)
53#define STANDARD_XRAM_RESOURCES (platform_parms.xram_res_count)
54#define STANDARD_ROM_RESOURCES (platform_parms.rom_res_count)
55
56/*
57 * Kernel Memory description, Respectively:
58 * code = last but one memory descriptor
59 * data = last memory descriptor
60 */
61#define code_resource (platform_parms.kram_res_p[STANDARD_KRAM_RESOURCES - 2])
62#define data_resource (platform_parms.kram_res_p[STANDARD_KRAM_RESOURCES - 1])
63
64/* Be prepared to 64-bit sign extensions */
65#define PFN_UP(x) ((((x) + PAGE_SIZE-1) >> PAGE_SHIFT) & 0x000fffff)
66#define PFN_DOWN(x) (((x) >> PAGE_SHIFT) & 0x000fffff)
67#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
68
69#endif /* __ASM_SH64_PLATFORM_H */