include/asm-sh64/platform.h

   1 #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  */
  24 struct 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
  42 extern struct sh64_platform platform_parms;
  43
  44 extern unsigned long long memory_start, memory_end;
  45
  46 extern unsigned long long fpu_in_use;
  47
  48 extern 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 */