LXR linux/arch/blackfin/include/asm/sections.h

   1/*
   2 * Copyright 2004-2009 Analog Devices Inc.
   3 *
   4 * Licensed under the GPL-2 or later.
   5 */
   6
   7#ifndef _BLACKFIN_SECTIONS_H
   8#define _BLACKFIN_SECTIONS_H
   9
  10/* only used when MTD_UCLINUX */
  11extern unsigned long memory_mtd_start, memory_mtd_end, mtd_size;
  12
  13extern unsigned long _ramstart, _ramend, _rambase;
  14extern unsigned long memory_start, memory_end, physical_mem_end;
  15
  16/*
  17 * The weak markings on the lengths might seem weird, but this is required
  18 * in order to make gcc accept the fact that these may actually have a value
  19 * of 0 (since they aren't actually addresses, but sizes of sections).
  20 */
  21extern char _stext_l1[], _etext_l1[], _text_l1_lma[], __weak _text_l1_len[];
  22extern char _sdata_l1[], _edata_l1[], _sbss_l1[], _ebss_l1[],
  23        _data_l1_lma[], __weak _data_l1_len[];
  24#ifdef CONFIG_ROMKERNEL
  25extern char _data_lma[], _data_len[], _sinitdata[], _einitdata[], _init_data_lma[], _init_data_len[];
  26#endif
  27extern char _sdata_b_l1[], _edata_b_l1[], _sbss_b_l1[], _ebss_b_l1[],
  28        _data_b_l1_lma[], __weak _data_b_l1_len[];
  29extern char _stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[],
  30        _sbss_l2[], _ebss_l2[], _l2_lma[], __weak _l2_len[];
  31
  32#include <asm/mem_map.h>
  33
  34/* Blackfin systems have discontinuous memory map and no virtualized memory */
  35static inline int arch_is_kernel_text(unsigned long addr)
  36{
  37        return
  38                (L1_CODE_LENGTH &&
  39                 addr >= (unsigned long)_stext_l1 &&
  40                 addr <  (unsigned long)_etext_l1)
  41                ||
  42                (L2_LENGTH &&
  43                 addr >= (unsigned long)_stext_l2 &&
  44                 addr <  (unsigned long)_etext_l2);
  45}
  46#define arch_is_kernel_text(addr) arch_is_kernel_text(addr)
  47
  48static inline int arch_is_kernel_data(unsigned long addr)
  49{
  50        return
  51                (L1_DATA_A_LENGTH &&
  52                 addr >= (unsigned long)_sdata_l1 &&
  53                 addr <  (unsigned long)_ebss_l1)
  54                ||
  55                (L1_DATA_B_LENGTH &&
  56                 addr >= (unsigned long)_sdata_b_l1 &&
  57                 addr <  (unsigned long)_ebss_b_l1)
  58                ||
  59                (L2_LENGTH &&
  60                 addr >= (unsigned long)_sdata_l2 &&
  61                 addr <  (unsigned long)_ebss_l2);
  62}
  63#define arch_is_kernel_data(addr) arch_is_kernel_data(addr)
  64
  65#include <asm-generic/sections.h>
  66
  67#endif
  68