70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
#ifndef __ASM_SH64_PLATFORM_H
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#define __ASM_SH64_PLATFORM_H
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* include/asm-sh64/platform.h
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*
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* Copyright (C) 2000, 2001 Paolo Alberelli
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*
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* benedict.gaster@superh.com: 3rd May 2002
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* Added support for ramdisk, removing statically linked romfs at the same time.
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*/
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#include <linux/ioport.h>
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#include <asm/irq.h>
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/*
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* Platform definition structure.
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*/
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struct sh64_platform {
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unsigned int readonly_rootfs;
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unsigned int ramdisk_flags;
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unsigned int initial_root_dev;
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unsigned int loader_type;
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unsigned int initrd_start;
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unsigned int initrd_size;
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unsigned int fpu_flags;
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unsigned int io_res_count;
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unsigned int kram_res_count;
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unsigned int xram_res_count;
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unsigned int rom_res_count;
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struct resource *io_res_p;
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struct resource *kram_res_p;
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struct resource *xram_res_p;
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struct resource *rom_res_p;
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};
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extern struct sh64_platform platform_parms;
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extern unsigned long long memory_start, memory_end;
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extern unsigned long long fpu_in_use;
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extern int platform_int_priority[NR_INTC_IRQS];
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#define FPU_FLAGS (platform_parms.fpu_flags)
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#define STANDARD_IO_RESOURCES (platform_parms.io_res_count)
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#define STANDARD_KRAM_RESOURCES (platform_parms.kram_res_count)
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#define STANDARD_XRAM_RESOURCES (platform_parms.xram_res_count)
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#define STANDARD_ROM_RESOURCES (platform_parms.rom_res_count)
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/*
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* Kernel Memory description, Respectively:
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* code = last but one memory descriptor
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* data = last memory descriptor
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*/
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#define code_resource (platform_parms.kram_res_p[STANDARD_KRAM_RESOURCES - 2])
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#define data_resource (platform_parms.kram_res_p[STANDARD_KRAM_RESOURCES - 1])
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/* Be prepared to 64-bit sign extensions */
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#define PFN_UP(x) ((((x) + PAGE_SIZE-1) >> PAGE_SHIFT) & 0x000fffff)
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#define PFN_DOWN(x) (((x) >> PAGE_SHIFT) & 0x000fffff)
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#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
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#endif /* __ASM_SH64_PLATFORM_H */
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