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 */
  11 extern unsigned long memory_mtd_start, memory_mtd_end, mtd_size;
  12
  13 extern unsigned long _ramstart, _ramend, _rambase;
  14 extern 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  */
  21 extern char _stext_l1[], _etext_l1[], _text_l1_lma[], __weak _text_l1_len[];
  22 extern char _sdata_l1[], _edata_l1[], _sbss_l1[], _ebss_l1[],
  23         _data_l1_lma[], __weak _data_l1_len[];
  24 #ifdef CONFIG_ROMKERNEL
  25 extern char _data_lma[], _data_len[], _sinitdata[], _einitdata[], _init_data_lma[], _init_data_len[];
  26 #endif
  27 extern char _sdata_b_l1[], _edata_b_l1[], _sbss_b_l1[], _ebss_b_l1[],
  28         _data_b_l1_lma[], __weak _data_b_l1_len[];
  29 extern 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 */
  35 static 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
  48 static 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