1/* 2 3Copyright (c) 2009-2018 ARM Limited. All rights reserved. 4 5 SPDX-License-Identifier: Apache-2.0 6 7Licensed under the Apache License, Version 2.0 (the License); you may 8not use this file except in compliance with the License. 9You may obtain a copy of the License at 10 11 www.apache.org/licenses/LICENSE-2.0 12 13Unless required by applicable law or agreed to in writing, software 14distributed under the License is distributed on an AS IS BASIS, WITHOUT 15WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16See the License for the specific language governing permissions and 17limitations under the License. 18 19NOTICE: This file has been modified by Nordic Semiconductor ASA. 20 21*/ 22 23 .syntax unified 24 .arch armv7e-m 25 26#ifdef __STARTUP_CONFIG 27#include "startup_config.h" 28#ifndef __STARTUP_CONFIG_STACK_ALIGNEMENT 29#define __STARTUP_CONFIG_STACK_ALIGNEMENT 3 30#endif 31#endif 32 33 .section .stack 34#if defined(__STARTUP_CONFIG) 35 .align __STARTUP_CONFIG_STACK_ALIGNEMENT 36 .equ Stack_Size, __STARTUP_CONFIG_STACK_SIZE 37#elif defined(__STACK_SIZE) 38 .align 3 39 .equ Stack_Size, __STACK_SIZE 40#else 41 .align 3 42 .equ Stack_Size, 8192 43#endif 44 .globl __StackTop 45 .globl __StackLimit 46__StackLimit: 47 .space Stack_Size 48 .size __StackLimit, . - __StackLimit 49__StackTop: 50 .size __StackTop, . - __StackTop 51 52 .section .heap 53 .align 3 54#if defined(__STARTUP_CONFIG) 55 .equ Heap_Size, __STARTUP_CONFIG_HEAP_SIZE 56#elif defined(__HEAP_SIZE) 57 .equ Heap_Size, __HEAP_SIZE 58#else 59 .equ Heap_Size, 8192 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 .isr_vector 72 .align 2 73 .globl __isr_vector 74__isr_vector: 75 .long __StackTop /* Top of Stack */ 76 .long Reset_Handler 77 .long NMI_Handler 78 .long HardFault_Handler 79 .long MemoryManagement_Handler 80 .long BusFault_Handler 81 .long UsageFault_Handler 82 .long 0 /*Reserved */ 83 .long 0 /*Reserved */ 84 .long 0 /*Reserved */ 85 .long 0 /*Reserved */ 86 .long SVC_Handler 87 .long DebugMon_Handler 88 .long 0 /*Reserved */ 89 .long PendSV_Handler 90 .long SysTick_Handler 91 92 /* External Interrupts */ 93 .long POWER_CLOCK_IRQHandler 94 .long RADIO_IRQHandler 95 .long UARTE0_UART0_IRQHandler 96 .long SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler 97 .long SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler 98 .long NFCT_IRQHandler 99 .long GPIOTE_IRQHandler 100 .long SAADC_IRQHandler 101 .long TIMER0_IRQHandler 102 .long TIMER1_IRQHandler 103 .long TIMER2_IRQHandler 104 .long RTC0_IRQHandler 105 .long TEMP_IRQHandler 106 .long RNG_IRQHandler 107 .long ECB_IRQHandler 108 .long CCM_AAR_IRQHandler 109 .long WDT_IRQHandler 110 .long RTC1_IRQHandler 111 .long QDEC_IRQHandler 112 .long COMP_LPCOMP_IRQHandler 113 .long SWI0_EGU0_IRQHandler 114 .long SWI1_EGU1_IRQHandler 115 .long SWI2_EGU2_IRQHandler 116 .long SWI3_EGU3_IRQHandler 117 .long SWI4_EGU4_IRQHandler 118 .long SWI5_EGU5_IRQHandler 119 .long TIMER3_IRQHandler 120 .long TIMER4_IRQHandler 121 .long PWM0_IRQHandler 122 .long PDM_IRQHandler 123 .long 0 /*Reserved */ 124 .long 0 /*Reserved */ 125 .long MWU_IRQHandler 126 .long PWM1_IRQHandler 127 .long PWM2_IRQHandler 128 .long SPIM2_SPIS2_SPI2_IRQHandler 129 .long RTC2_IRQHandler 130 .long I2S_IRQHandler 131 .long FPU_IRQHandler 132 .long 0 /*Reserved */ 133 .long 0 /*Reserved */ 134 .long 0 /*Reserved */ 135 .long 0 /*Reserved */ 136 .long 0 /*Reserved */ 137 .long 0 /*Reserved */ 138 .long 0 /*Reserved */ 139 .long 0 /*Reserved */ 140 .long 0 /*Reserved */ 141 .long 0 /*Reserved */ 142 .long 0 /*Reserved */ 143 .long 0 /*Reserved */ 144 .long 0 /*Reserved */ 145 .long 0 /*Reserved */ 146 .long 0 /*Reserved */ 147 .long 0 /*Reserved */ 148 .long 0 /*Reserved */ 149 .long 0 /*Reserved */ 150 .long 0 /*Reserved */ 151 .long 0 /*Reserved */ 152 .long 0 /*Reserved */ 153 .long 0 /*Reserved */ 154 .long 0 /*Reserved */ 155 .long 0 /*Reserved */ 156 .long 0 /*Reserved */ 157 .long 0 /*Reserved */ 158 .long 0 /*Reserved */ 159 .long 0 /*Reserved */ 160 .long 0 /*Reserved */ 161 .long 0 /*Reserved */ 162 .long 0 /*Reserved */ 163 .long 0 /*Reserved */ 164 .long 0 /*Reserved */ 165 .long 0 /*Reserved */ 166 .long 0 /*Reserved */ 167 .long 0 /*Reserved */ 168 .long 0 /*Reserved */ 169 .long 0 /*Reserved */ 170 .long 0 /*Reserved */ 171 .long 0 /*Reserved */ 172 .long 0 /*Reserved */ 173 .long 0 /*Reserved */ 174 .long 0 /*Reserved */ 175 .long 0 /*Reserved */ 176 .long 0 /*Reserved */ 177 .long 0 /*Reserved */ 178 .long 0 /*Reserved */ 179 .long 0 /*Reserved */ 180 .long 0 /*Reserved */ 181 .long 0 /*Reserved */ 182 .long 0 /*Reserved */ 183 .long 0 /*Reserved */ 184 .long 0 /*Reserved */ 185 .long 0 /*Reserved */ 186 .long 0 /*Reserved */ 187 .long 0 /*Reserved */ 188 .long 0 /*Reserved */ 189 .long 0 /*Reserved */ 190 .long 0 /*Reserved */ 191 .long 0 /*Reserved */ 192 .long 0 /*Reserved */ 193 .long 0 /*Reserved */ 194 .long 0 /*Reserved */ 195 .long 0 /*Reserved */ 196 .long 0 /*Reserved */ 197 .long 0 /*Reserved */ 198 .long 0 /*Reserved */ 199 .long 0 /*Reserved */ 200 .long 0 /*Reserved */ 201 .long 0 /*Reserved */ 202 .long 0 /*Reserved */ 203 .long 0 /*Reserved */ 204 .long 0 /*Reserved */ 205 206 .size __isr_vector, . - __isr_vector 207 208/* Reset Handler */ 209 210 211 .text 212 .thumb 213 .thumb_func 214 .align 1 215 .globl Reset_Handler 216 .type Reset_Handler, %function 217Reset_Handler: 218 219 220/* Loop to copy data from read only memory to RAM. 221 * The ranges of copy from/to are specified by following symbols: 222 * __etext: LMA of start of the section to copy from. Usually end of text 223 * __data_start__: VMA of start of the section to copy to. 224 * __bss_start__: VMA of end of the section to copy to. Normally __data_end__ is used, but by using __bss_start__ 225 * the user can add their own initialized data section before BSS section with the INTERT AFTER command. 226 * 227 * All addresses must be aligned to 4 bytes boundary. 228 */ 229 ldr r1, =__etext 230 ldr r2, =__data_start__ 231 ldr r3, =__bss_start__ 232 233 subs r3, r3, r2 234 ble .L_loop1_done 235 236.L_loop1: 237 subs r3, r3, #4 238 ldr r0, [r1,r3] 239 str r0, [r2,r3] 240 bgt .L_loop1 241 242.L_loop1_done: 243 244/* This part of work usually is done in C library startup code. Otherwise, 245 * define __STARTUP_CLEAR_BSS to enable it in this startup. This section 246 * clears the RAM where BSS data is located. 247 * 248 * The BSS section is specified by following symbols 249 * __bss_start__: start of the BSS section. 250 * __bss_end__: end of the BSS section. 251 * 252 * All addresses must be aligned to 4 bytes boundary. 253 */ 254#ifdef __STARTUP_CLEAR_BSS 255 ldr r1, =__bss_start__ 256 ldr r2, =__bss_end__ 257 258 movs r0, 0 259 260 subs r2, r2, r1 261 ble .L_loop3_done 262 263.L_loop3: 264 subs r2, r2, #4 265 str r0, [r1, r2] 266 bgt .L_loop3 267 268.L_loop3_done: 269#endif /* __STARTUP_CLEAR_BSS */ 270 271/* Execute SystemInit function. */ 272 bl SystemInit 273 274/* Call _start function provided by libraries. 275 * If those libraries are not accessible, define __START as your entry point. 276 */ 277#ifndef __START 278#define __START _start 279#endif 280 bl __START 281 282 .pool 283 .size Reset_Handler,.-Reset_Handler 284 285 .section ".text" 286 287 288/* Dummy Exception Handlers (infinite loops which can be modified) */ 289 290 .weak NMI_Handler 291 .type NMI_Handler, %function 292NMI_Handler: 293 b . 294 .size NMI_Handler, . - NMI_Handler 295 296 297 .weak HardFault_Handler 298 .type HardFault_Handler, %function 299HardFault_Handler: 300 b . 301 .size HardFault_Handler, . - HardFault_Handler 302 303 304 .weak MemoryManagement_Handler 305 .type MemoryManagement_Handler, %function 306MemoryManagement_Handler: 307 b . 308 .size MemoryManagement_Handler, . - MemoryManagement_Handler 309 310 311 .weak BusFault_Handler 312 .type BusFault_Handler, %function 313BusFault_Handler: 314 b . 315 .size BusFault_Handler, . - BusFault_Handler 316 317 318 .weak UsageFault_Handler 319 .type UsageFault_Handler, %function 320UsageFault_Handler: 321 b . 322 .size UsageFault_Handler, . - UsageFault_Handler 323 324 325 .weak SVC_Handler 326 .type SVC_Handler, %function 327SVC_Handler: 328 b . 329 .size SVC_Handler, . - SVC_Handler 330 331 332 .weak DebugMon_Handler 333 .type DebugMon_Handler, %function 334DebugMon_Handler: 335 b . 336 .size DebugMon_Handler, . - DebugMon_Handler 337 338 339 .weak PendSV_Handler 340 .type PendSV_Handler, %function 341PendSV_Handler: 342 b . 343 .size PendSV_Handler, . - PendSV_Handler 344 345 346 .weak SysTick_Handler 347 .type SysTick_Handler, %function 348SysTick_Handler: 349 b . 350 .size SysTick_Handler, . - SysTick_Handler 351 352 353/* IRQ Handlers */ 354 355 .globl Default_Handler 356 .type Default_Handler, %function 357Default_Handler: 358 b . 359 .size Default_Handler, . - Default_Handler 360 361 .macro IRQ handler 362 .weak \handler 363 .set \handler, Default_Handler 364 .endm 365 366 IRQ POWER_CLOCK_IRQHandler 367 IRQ RADIO_IRQHandler 368 IRQ UARTE0_UART0_IRQHandler 369 IRQ SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler 370 IRQ SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1_IRQHandler 371 IRQ NFCT_IRQHandler 372 IRQ GPIOTE_IRQHandler 373 IRQ SAADC_IRQHandler 374 IRQ TIMER0_IRQHandler 375 IRQ TIMER1_IRQHandler 376 IRQ TIMER2_IRQHandler 377 IRQ RTC0_IRQHandler 378 IRQ TEMP_IRQHandler 379 IRQ RNG_IRQHandler 380 IRQ ECB_IRQHandler 381 IRQ CCM_AAR_IRQHandler 382 IRQ WDT_IRQHandler 383 IRQ RTC1_IRQHandler 384 IRQ QDEC_IRQHandler 385 IRQ COMP_LPCOMP_IRQHandler 386 IRQ SWI0_EGU0_IRQHandler 387 IRQ SWI1_EGU1_IRQHandler 388 IRQ SWI2_EGU2_IRQHandler 389 IRQ SWI3_EGU3_IRQHandler 390 IRQ SWI4_EGU4_IRQHandler 391 IRQ SWI5_EGU5_IRQHandler 392 IRQ TIMER3_IRQHandler 393 IRQ TIMER4_IRQHandler 394 IRQ PWM0_IRQHandler 395 IRQ PDM_IRQHandler 396 IRQ MWU_IRQHandler 397 IRQ PWM1_IRQHandler 398 IRQ PWM2_IRQHandler 399 IRQ SPIM2_SPIS2_SPI2_IRQHandler 400 IRQ RTC2_IRQHandler 401 IRQ I2S_IRQHandler 402 IRQ FPU_IRQHandler 403 404 .end 405