arch/arm/mm/proc-arm7tdmi.S

   1 /*
   2  *  linux/arch/arm/mm/proc-arm7tdmi.S: utility functions for ARM7TDMI
   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_arm7tdmi_proc_init()
  25  * cpu_arm7tdmi_do_idle()
  26  * cpu_arm7tdmi_dcache_clean_area()
  27  * cpu_arm7tdmi_switch_mm()
  28  *
  29  * These are not required.
  30  */
  31 ENTRY(cpu_arm7tdmi_proc_init)
  32 ENTRY(cpu_arm7tdmi_do_idle)
  33 ENTRY(cpu_arm7tdmi_dcache_clean_area)
  34 ENTRY(cpu_arm7tdmi_switch_mm)
  35                 mov     pc, lr
  36
  37 /*
  38  * cpu_arm7tdmi_proc_fin()
  39  */
  40 ENTRY(cpu_arm7tdmi_proc_fin)
  41                 mov     pc, lr
  42
  43 /*
  44  * Function: cpu_arm7tdmi_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_arm7tdmi_reset)
  50                 mov     pc, r0
  51 ENDPROC(cpu_arm7tdmi_reset)
  52                 .popsection
  53
  54                 .type   __arm7tdmi_setup, #function
  55 __arm7tdmi_setup:
  56                 mov     pc, lr
  57                 .size   __arm7tdmi_setup, . - __arm7tdmi_setup
  58
  59                 __INITDATA
  60
  61                 @ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
  62                 define_processor_functions arm7tdmi, dabort=v4t_late_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_arm7tdmi_name, "ARM7TDMI"
  69                 string  cpu_triscenda7_name, "Triscend-A7x"
  70                 string  cpu_at91_name, "Atmel-AT91M40xxx"
  71                 string  cpu_s3c3410_name, "Samsung-S3C3410"
  72                 string  cpu_s3c44b0x_name, "Samsung-S3C44B0x"
  73                 string  cpu_s3c4510b_name, "Samsung-S3C4510B"
  74                 string  cpu_s3c4530_name, "Samsung-S3C4530"
  75                 string  cpu_netarm_name, "NETARM"
  76
  77                 .align
  78
  79                 .section ".proc.info.init", #alloc, #execinstr
  80
  81 .macro arm7tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, \
  82         extra_hwcaps=0
  83                 .type   __\name\()_proc_info, #object
  84 __\name\()_proc_info:
  85                 .long   \cpu_val
  86                 .long   \cpu_mask
  87                 .long   0
  88                 .long   0
  89                 b       __arm7tdmi_setup
  90                 .long   cpu_arch_name
  91                 .long   cpu_elf_name
  92                 .long   HWCAP_SWP | HWCAP_26BIT | ( \extra_hwcaps )
  93                 .long   \cpu_name
  94                 .long   arm7tdmi_processor_functions
  95                 .long   0
  96                 .long   0
  97                 .long   v4_cache_fns
  98                 .size   __\name\()_proc_info, . - __\name\()_proc_info
  99 .endm
 100
 101                 arm7tdmi_proc_info arm7tdmi, 0x41007700, 0xfff8ff00, \
 102                         cpu_arm7tdmi_name
 103                 arm7tdmi_proc_info triscenda7, 0x0001d2ff, 0x0001ffff, \
 104                         cpu_triscenda7_name, extra_hwcaps=HWCAP_THUMB
 105                 arm7tdmi_proc_info at91, 0x14000040, 0xfff000e0, \
 106                         cpu_at91_name, extra_hwcaps=HWCAP_THUMB
 107                 arm7tdmi_proc_info s3c4510b, 0x36365000, 0xfffff000, \
 108                         cpu_s3c4510b_name, extra_hwcaps=HWCAP_THUMB
 109                 arm7tdmi_proc_info s3c4530, 0x4c000000, 0xfff000e0, \
 110                         cpu_s3c4530_name, extra_hwcaps=HWCAP_THUMB
 111                 arm7tdmi_proc_info s3c3410, 0x34100000, 0xffff0000, \
 112                         cpu_s3c3410_name, extra_hwcaps=HWCAP_THUMB
 113                 arm7tdmi_proc_info s3c44b0x, 0x44b00000, 0xffff0000, \
 114                         cpu_s3c44b0x_name, extra_hwcaps=HWCAP_THUMB