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   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/elf.h>
  16 #include <asm/pgtable-hwdef.h>
  17 #include <asm/pgtable.h>
  18 #include <asm/ptrace.h>
  19
  20         .text
  21 /*
  22  * cpu_arm7tdmi_proc_init()
  23  * cpu_arm7tdmi_do_idle()
  24  * cpu_arm7tdmi_dcache_clean_area()
  25  * cpu_arm7tdmi_switch_mm()
  26  *
  27  * These are not required.
  28  */
  29 ENTRY(cpu_arm7tdmi_proc_init)
  30 ENTRY(cpu_arm7tdmi_do_idle)
  31 ENTRY(cpu_arm7tdmi_dcache_clean_area)
  32 ENTRY(cpu_arm7tdmi_switch_mm)
  33                 mov     pc, lr
  34
  35 /*
  36  * cpu_arm7tdmi_proc_fin()
  37  */
  38 ENTRY(cpu_arm7tdmi_proc_fin)
  39                 mov     r0, #PSR_F_BIT | PSR_I_BIT | SVC_MODE
  40                 msr     cpsr_c, r0
  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 ENTRY(cpu_arm7tdmi_reset)
  49                 mov     pc, r0
  50
  51                 __INIT
  52
  53                 .type   __arm7tdmi_setup, #function
  54 __arm7tdmi_setup:
  55                 mov     pc, lr
  56                 .size   __arm7tdmi_setup, . - __arm7tdmi_setup
  57
  58                 __INITDATA
  59
  60 /*
  61  * Purpose : Function pointers used to access above functions - all calls
  62  *           come through these
  63  */
  64                 .type   arm7tdmi_processor_functions, #object
  65 ENTRY(arm7tdmi_processor_functions)
  66                 .word   v4t_late_abort
  67                 .word   pabort_noifar
  68                 .word   cpu_arm7tdmi_proc_init
  69                 .word   cpu_arm7tdmi_proc_fin
  70                 .word   cpu_arm7tdmi_reset
  71                 .word   cpu_arm7tdmi_do_idle
  72                 .word   cpu_arm7tdmi_dcache_clean_area
  73                 .word   cpu_arm7tdmi_switch_mm
  74                 .word   0               @ cpu_*_set_pte
  75                 .size   arm7tdmi_processor_functions, . - arm7tdmi_processor_functions
  76
  77                 .section ".rodata"
  78
  79                 .type   cpu_arch_name, #object
  80 cpu_arch_name:
  81                 .asciz  "armv4t"
  82                 .size   cpu_arch_name, . - cpu_arch_name
  83
  84                 .type   cpu_elf_name, #object
  85 cpu_elf_name:
  86                 .asciz  "v4"
  87                 .size   cpu_elf_name, . - cpu_elf_name
  88
  89                 .type   cpu_arm7tdmi_name, #object
  90 cpu_arm7tdmi_name:
  91                 .asciz  "ARM7TDMI"
  92                 .size   cpu_arm7tdmi_name, . - cpu_arm7tdmi_name
  93
  94                 .type   cpu_triscenda7_name, #object
  95 cpu_triscenda7_name:
  96                 .asciz  "Triscend-A7x"
  97                 .size   cpu_triscenda7_name, . - cpu_triscenda7_name
  98
  99                 .type   cpu_at91_name, #object
 100 cpu_at91_name:
 101                 .asciz  "Atmel-AT91M40xxx"
 102                 .size   cpu_at91_name, . - cpu_at91_name
 103
 104                 .type   cpu_s3c3410_name, #object
 105 cpu_s3c3410_name:
 106                 .asciz  "Samsung-S3C3410"
 107                 .size   cpu_s3c3410_name, . - cpu_s3c3410_name
 108
 109                 .type   cpu_s3c44b0x_name, #object
 110 cpu_s3c44b0x_name:
 111                 .asciz  "Samsung-S3C44B0x"
 112                 .size   cpu_s3c44b0x_name, . - cpu_s3c44b0x_name
 113
 114                 .type   cpu_s3c4510b, #object
 115 cpu_s3c4510b_name:
 116                 .asciz  "Samsung-S3C4510B"
 117                 .size   cpu_s3c4510b_name, . - cpu_s3c4510b_name
 118
 119                 .type   cpu_s3c4530_name, #object
 120 cpu_s3c4530_name:
 121                 .asciz  "Samsung-S3C4530"
 122                 .size   cpu_s3c4530_name, . - cpu_s3c4530_name
 123
 124                 .type   cpu_netarm_name, #object
 125 cpu_netarm_name:
 126                 .asciz  "NETARM"
 127                 .size   cpu_netarm_name, . - cpu_netarm_name
 128
 129                 .align
 130
 131                 .section ".proc.info.init", #alloc, #execinstr
 132
 133                 .type   __arm7tdmi_proc_info, #object
 134 __arm7tdmi_proc_info:
 135                 .long   0x41007700
 136                 .long   0xfff8ff00
 137                 .long   0
 138                 .long   0
 139                 b       __arm7tdmi_setup
 140                 .long   cpu_arch_name
 141                 .long   cpu_elf_name
 142                 .long   HWCAP_SWP | HWCAP_26BIT
 143                 .long   cpu_arm7tdmi_name
 144                 .long   arm7tdmi_processor_functions
 145                 .long   0
 146                 .long   0
 147                 .long   v4_cache_fns
 148                 .size   __arm7tdmi_proc_info, . - __arm7dmi_proc_info
 149
 150                 .type   __triscenda7_proc_info, #object
 151 __triscenda7_proc_info:
 152                 .long   0x0001d2ff
 153                 .long   0x0001ffff
 154                 .long   0
 155                 .long   0
 156                 b       __arm7tdmi_setup
 157                 .long   cpu_arch_name
 158                 .long   cpu_elf_name
 159                 .long   HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
 160                 .long   cpu_triscenda7_name
 161                 .long   arm7tdmi_processor_functions
 162                 .long   0
 163                 .long   0
 164                 .long   v4_cache_fns
 165                 .size   __triscenda7_proc_info, . - __triscenda7_proc_info
 166
 167                 .type   __at91_proc_info, #object
 168 __at91_proc_info:
 169                 .long   0x14000040
 170                 .long   0xfff000e0
 171                 .long   0
 172                 .long   0
 173                 b       __arm7tdmi_setup
 174                 .long   cpu_arch_name
 175                 .long   cpu_elf_name
 176                 .long   HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
 177                 .long   cpu_at91_name
 178                 .long   arm7tdmi_processor_functions
 179                 .long   0
 180                 .long   0
 181                 .long   v4_cache_fns
 182                 .size   __at91_proc_info, . - __at91_proc_info
 183
 184                 .type   __s3c4510b_proc_info, #object
 185 __s3c4510b_proc_info:
 186                 .long   0x36365000
 187                 .long   0xfffff000
 188                 .long   0
 189                 .long   0
 190                 b       __arm7tdmi_setup
 191                 .long   cpu_arch_name
 192                 .long   cpu_elf_name
 193                 .long   HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
 194                 .long   cpu_s3c4510b_name
 195                 .long   arm7tdmi_processor_functions
 196                 .long   0
 197                 .long   0
 198                 .long   v4_cache_fns
 199                 .size   __s3c4510b_proc_info, . - __s3c4510b_proc_info
 200
 201                 .type   __s3c4530_proc_info, #object
 202 __s3c4530_proc_info:
 203                 .long   0x4c000000
 204                 .long   0xfff000e0
 205                 .long   0
 206                 .long   0
 207                 b       __arm7tdmi_setup
 208                 .long   cpu_arch_name
 209                 .long   cpu_elf_name
 210                 .long   HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
 211                 .long   cpu_s3c4530_name
 212                 .long   arm7tdmi_processor_functions
 213                 .long   0
 214                 .long   0
 215                 .long   v4_cache_fns
 216                 .size   __s3c4530_proc_info, . - __s3c4530_proc_info
 217
 218                 .type   __s3c3410_proc_info, #object
 219 __s3c3410_proc_info:
 220                 .long   0x34100000
 221                 .long   0xffff0000
 222                 .long   0
 223                 .long   0
 224                 b       __arm7tdmi_setup
 225                 .long   cpu_arch_name
 226                 .long   cpu_elf_name
 227                 .long   HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
 228                 .long   cpu_s3c3410_name
 229                 .long   arm7tdmi_processor_functions
 230                 .long   0
 231                 .long   0
 232                 .long   v4_cache_fns
 233                 .size   __s3c3410_proc_info, . - __s3c3410_proc_info
 234
 235                 .type   __s3c44b0x_proc_info, #object
 236 __s3c44b0x_proc_info:
 237                 .long   0x44b00000
 238                 .long   0xffff0000
 239                 .long   0
 240                 .long   0
 241                 b       __arm7tdmi_setup
 242                 .long   cpu_arch_name
 243                 .long   cpu_elf_name
 244                 .long   HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
 245                 .long   cpu_s3c44b0x_name
 246                 .long   arm7tdmi_processor_functions
 247                 .long   0
 248                 .long   0
 249                 .long   v4_cache_fns
 250                 .size   __s3c44b0x_proc_info, . - __s3c44b0x_proc_info