tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_NORDIC/TARGET_MCU_NRF51822/TOOLCHAIN_GCC_ARM/startup_NRF51822.s

   1 /*
   2 Copyright (c) 2013, Nordic Semiconductor ASA
   3 All rights reserved.
   4
   5 Redistribution and use in source and binary forms, with or without
   6 modification, are permitted provided that the following conditions are met:
   7
   8 * Redistributions of source code must retain the above copyright notice, this
   9   list of conditions and the following disclaimer.
  10
  11 * Redistributions in binary form must reproduce the above copyright notice,
  12   this list of conditions and the following disclaimer in the documentation
  13   and/or other materials provided with the distribution.
  14
  15 * Neither the name of Nordic Semiconductor ASA nor the names of its
  16   contributors may be used to endorse or promote products derived from
  17   this software without specific prior written permission.
  18
  19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  20 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  23 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  25 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  26 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  27 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29 */
  30
  31 /*
  32 NOTE: Template files (including this one) are application specific and therefore
  33 expected to be copied into the application project folder prior to its use!
  34 */
  35
  36     .syntax unified
  37     .arch armv6-m
  38
  39     .section .stack
  40     .align 3
  41 #ifdef __STACK_SIZE
  42     .equ    Stack_Size, __STACK_SIZE
  43 #else
  44     .equ    Stack_Size, 2048
  45 #endif
  46     .globl    __StackTop
  47     .globl    __StackLimit
  48 __StackLimit:
  49     .space    Stack_Size
  50     .size __StackLimit, . - __StackLimit
  51 __StackTop:
  52     .size __StackTop, . - __StackTop
  53
  54     .section .heap
  55     .align 3
  56 #ifdef __HEAP_SIZE
  57     .equ    Heap_Size, __HEAP_SIZE
  58 #else
  59     .equ    Heap_Size, 2048
  60 #endif
  61     .globl    __HeapBase
  62     .globl    __HeapLimit
  63 __HeapBase:
  64     .if    Heap_Size
  65     .space    Heap_Size
  66     .endif
  67     .size __HeapBase, . - __HeapBase
  68 __HeapLimit:
  69     .size __HeapLimit, . - __HeapLimit
  70
  71     .section .Vectors
  72     .align 2
  73     .globl __Vectors
  74 __Vectors:
  75     .long    __StackTop            /* Top of Stack */
  76     .long   Reset_Handler               /* Reset Handler */
  77     .long   NMI_Handler                 /* NMI Handler */
  78     .long   HardFault_Handler           /* Hard Fault Handler */
  79     .long   0                           /* Reserved */
  80     .long   0                           /* Reserved */
  81     .long   0                           /* Reserved */
  82     .long   0                           /* Reserved */
  83     .long   0                           /* Reserved */
  84     .long   0                           /* Reserved */
  85     .long   0                           /* Reserved */
  86     .long   SVC_Handler                 /* SVCall Handler */
  87     .long   0                           /* Reserved */
  88     .long   0                           /* Reserved */
  89     .long   PendSV_Handler              /* PendSV Handler */
  90     .long   SysTick_Handler             /* SysTick Handler */
  91
  92   /* External Interrupts */
  93     .long       POWER_CLOCK_IRQHandler           /*POWER_CLOCK */
  94     .long       RADIO_IRQHandler                 /*RADIO */
  95     .long       UART0_IRQHandler                 /*UART0 */
  96     .long       SPI0_TWI0_IRQHandler             /*SPI0_TWI0 */
  97     .long       SPI1_TWI1_IRQHandler             /*SPI1_TWI1 */
  98     .long       0                /*Reserved */
  99     .long       GPIOTE_IRQHandler                /*GPIOTE */
 100     .long       ADC_IRQHandler           /*ADC */
 101     .long       TIMER0_IRQHandler                /*TIMER0 */
 102     .long       TIMER1_IRQHandler                /*TIMER1 */
 103     .long       TIMER2_IRQHandler                /*TIMER2 */
 104     .long       RTC0_IRQHandler          /*RTC0 */
 105     .long       TEMP_IRQHandler          /*TEMP */
 106     .long       RNG_IRQHandler           /*RNG */
 107     .long       ECB_IRQHandler           /*ECB */
 108     .long       CCM_AAR_IRQHandler               /*CCM_AAR */
 109     .long       WDT_IRQHandler           /*WDT */
 110     .long       RTC1_IRQHandler          /*RTC1 */
 111     .long       QDEC_IRQHandler          /*QDEC */
 112     .long       LPCOMP_IRQHandler                /*LPCOMP */
 113     .long       SWI0_IRQHandler          /*SWI0 */
 114     .long       SWI1_IRQHandler          /*SWI1 */
 115     .long       SWI2_IRQHandler          /*SWI2 */
 116     .long       SWI3_IRQHandler          /*SWI3 */
 117     .long       SWI4_IRQHandler          /*SWI4 */
 118     .long       SWI5_IRQHandler          /*SWI5 */
 119     .long       0                /*Reserved */
 120     .long       0                /*Reserved */
 121     .long       0                /*Reserved */
 122     .long       0                /*Reserved */
 123     .long       0                /*Reserved */
 124     .long       0                /*Reserved */
 125
 126
 127     .size    __Vectors, . - __Vectors
 128
 129 /* Reset Handler */
 130
 131     .equ    NRF_POWER_RAMON_ADDRESS,            0x40000524
 132     .equ    NRF_POWER_RAMON_RAMxON_ONMODE_Msk,  0x3
 133
 134     .text
 135     .thumb
 136     .thumb_func
 137     .align 1
 138     .globl    Reset_Handler
 139     .type    Reset_Handler, %function
 140 Reset_Handler:
 141     .fnstart
 142
 143 /* Make sure ALL RAM banks are powered on */
 144     LDR     R0, =NRF_POWER_RAMON_ADDRESS
 145     LDR     R2, [R0]
 146     MOVS    R1, #NRF_POWER_RAMON_RAMxON_ONMODE_Msk
 147     ORRS    R2, R1
 148     STR     R2, [R0]
 149
 150 /*     Loop to copy data from read only memory to RAM. The ranges
 151  *      of copy from/to are specified by following symbols evaluated in
 152  *      linker script.
 153  *      __etext: End of code section, i.e., begin of data sections to copy from.
 154  *      __data_start__/__data_end__: RAM address range that data should be
 155  *      copied to. Both must be aligned to 4 bytes boundary.  */
 156
 157     ldr    r1, =__etext
 158     ldr    r2, =__data_start__
 159     ldr    r3, =__data_end__
 160
 161     subs    r3, r2
 162     ble     .LC0
 163
 164 .LC1:
 165     subs    r3, 4
 166     ldr    r0, [r1,r3]
 167     str    r0, [r2,r3]
 168     bgt    .LC1
 169 .LC0:
 170
 171     LDR     R0, =SystemInit
 172     BLX     R0
 173     LDR     R0, =_start
 174     BX      R0
 175
 176     .pool
 177     .cantunwind
 178     .fnend
 179     .size   Reset_Handler,.-Reset_Handler
 180
 181     .section ".text"
 182
 183
 184 /* Dummy Exception Handlers (infinite loops which can be modified) */
 185
 186     .weak   NMI_Handler
 187     .type   NMI_Handler, %function
 188 NMI_Handler:
 189     B       .
 190     .size   NMI_Handler, . - NMI_Handler
 191
 192
 193     .weak   HardFault_Handler
 194     .type   HardFault_Handler, %function
 195 HardFault_Handler:
 196     B       .
 197     .size   HardFault_Handler, . - HardFault_Handler
 198
 199
 200     .weak   SVC_Handler
 201     .type   SVC_Handler, %function
 202 SVC_Handler:
 203     B       .
 204     .size   SVC_Handler, . - SVC_Handler
 205
 206
 207     .weak   PendSV_Handler
 208     .type   PendSV_Handler, %function
 209 PendSV_Handler:
 210     B       .
 211     .size   PendSV_Handler, . - PendSV_Handler
 212
 213
 214     .weak   SysTick_Handler
 215     .type   SysTick_Handler, %function
 216 SysTick_Handler:
 217     B       .
 218     .size   SysTick_Handler, . - SysTick_Handler
 219
 220
 221 /* IRQ Handlers */
 222
 223     .globl  Default_Handler
 224     .type   Default_Handler, %function
 225 Default_Handler:
 226     B       .
 227     .size   Default_Handler, . - Default_Handler
 228
 229     .macro  IRQ handler
 230     .weak   \handler
 231     .set    \handler, Default_Handler
 232     .endm
 233
 234     IRQ  POWER_CLOCK_IRQHandler
 235     IRQ  RADIO_IRQHandler
 236     IRQ  UART0_IRQHandler
 237     IRQ  SPI0_TWI0_IRQHandler
 238     IRQ  SPI1_TWI1_IRQHandler
 239     IRQ  GPIOTE_IRQHandler
 240     IRQ  ADC_IRQHandler
 241     IRQ  TIMER0_IRQHandler
 242     IRQ  TIMER1_IRQHandler
 243     IRQ  TIMER2_IRQHandler
 244     IRQ  RTC0_IRQHandler
 245     IRQ  TEMP_IRQHandler
 246     IRQ  RNG_IRQHandler
 247     IRQ  ECB_IRQHandler
 248     IRQ  CCM_AAR_IRQHandler
 249     IRQ  WDT_IRQHandler
 250     IRQ  RTC1_IRQHandler
 251     IRQ  QDEC_IRQHandler
 252     IRQ  LPCOMP_IRQHandler
 253     IRQ  SWI0_IRQHandler
 254     IRQ  SWI1_IRQHandler
 255     IRQ  SWI2_IRQHandler
 256     IRQ  SWI3_IRQHandler
 257     IRQ  SWI4_IRQHandler
 258     IRQ  SWI5_IRQHandler
 259
 260
 261   .end
 262