kernel/arch/arm/mm/proc-arm9tdmi.S

   1 /*
   2  *  linux/arch/arm/mm/proc-arm9tdmi.S: utility functions for ARM9TDMI
   3  *
   4  *  Copyright (C) 2003-2006 Hyok S. Choi <hyok.choi@samsung.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  */
  11 #include <linux/linkage.h>
  12 #include <linux/init.h>
  13 #include <asm/assembler.h>
  14 #include <asm/asm-offsets.h>
  15 #include <asm/hwcap.h>
  16 #include <asm/pgtable-hwdef.h>
  17 #include <asm/pgtable.h>
  18 #include <asm/ptrace.h>
  19
  20 #include "proc-macros.S"
  21
  22         .text
  23 /*
  24  * cpu_arm9tdmi_proc_init()
  25  * cpu_arm9tdmi_do_idle()
  26  * cpu_arm9tdmi_dcache_clean_area()
  27  * cpu_arm9tdmi_switch_mm()
  28  *
  29  * These are not required.
  30  */
  31 ENTRY(cpu_arm9tdmi_proc_init)
  32 ENTRY(cpu_arm9tdmi_do_idle)
  33 ENTRY(cpu_arm9tdmi_dcache_clean_area)
  34 ENTRY(cpu_arm9tdmi_switch_mm)
  35                 ret     lr
  36
  37 /*
  38  * cpu_arm9tdmi_proc_fin()
  39  */
  40 ENTRY(cpu_arm9tdmi_proc_fin)
  41                 ret     lr
  42
  43 /*
  44  * Function: cpu_arm9tdmi_reset(loc)
  45  * Params  : loc(r0)    address to jump to
  46  * Purpose : Sets up everything for a reset and jump to the location for soft reset.
  47  */
  48                 .pushsection    .idmap.text, "ax"
  49 ENTRY(cpu_arm9tdmi_reset)
  50                 ret     r0
  51 ENDPROC(cpu_arm9tdmi_reset)
  52                 .popsection
  53
  54                 .type   __arm9tdmi_setup, #function
  55 __arm9tdmi_setup:
  56                 ret     lr
  57                 .size   __arm9tdmi_setup, . - __arm9tdmi_setup
  58
  59                 __INITDATA
  60
  61                 @ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
  62                 define_processor_functions arm9tdmi, dabort=nommu_early_abort, pabort=legacy_pabort, nommu=1
  63
  64                 .section ".rodata"
  65
  66                 string  cpu_arch_name, "armv4t"
  67                 string  cpu_elf_name, "v4"
  68                 string  cpu_arm9tdmi_name, "ARM9TDMI"
  69                 string  cpu_p2001_name, "P2001"
  70
  71                 .align
  72
  73                 .section ".proc.info.init", #alloc
  74
  75 .macro arm9tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req
  76                 .type   __\name\()_proc_info, #object
  77 __\name\()_proc_info:
  78                 .long   \cpu_val
  79                 .long   \cpu_mask
  80                 .long   0
  81                 .long   0
  82                 initfn  __arm9tdmi_setup, __\name\()_proc_info
  83                 .long   cpu_arch_name
  84                 .long   cpu_elf_name
  85                 .long   HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
  86                 .long   \cpu_name
  87                 .long   arm9tdmi_processor_functions
  88                 .long   0
  89                 .long   0
  90                 .long   v4_cache_fns
  91                 .size   __\name\()_proc_info, . - __\name\()_proc_info
  92 .endm
  93
  94         arm9tdmi_proc_info arm9tdmi, 0x41009900, 0xfff8ff00, cpu_arm9tdmi_name
  95         arm9tdmi_proc_info p2001, 0x41029000, 0xffffffff, cpu_p2001_name