1 //*****************************************************************************
2 //  MIMX8MSCALE_M4 startup code for use with MCUXpresso IDE
3 //
4 // Version : 160922
5 //*****************************************************************************
6 //
7 // Copyright 2016, NXP
8 // All rights reserved.
9 //
10 // Software that is described herein is for illustrative purposes only
11 // which provides customers with programming information regarding the
12 // LPC products.  This software is supplied "AS IS" without any warranties of
13 // any kind, and NXP Semiconductors and its licensor disclaim any and
14 // all warranties, express or implied, including all implied warranties of
15 // merchantability, fitness for a particular purpose and non-infringement of
16 // intellectual property rights.  NXP Semiconductors assumes no responsibility
17 // or liability for the use of the software, conveys no license or rights under any
18 // patent, copyright, mask work right, or any other intellectual property rights in
19 // or to any products. NXP Semiconductors reserves the right to make changes
20 // in the software without notification. NXP Semiconductors also makes no
21 // representation or warranty that such application will be suitable for the
22 // specified use without further testing or modification.
23 //
24 // Permission to use, copy, modify, and distribute this software and its
25 // documentation is hereby granted, under NXP Semiconductors' and its
26 // licensor's relevant copyrights in the software, without fee, provided that it
27 // is used in conjunction with NXP Semiconductors microcontrollers.  This
28 // copyright, permission, and disclaimer notice must appear in all copies of
29 // this code.
30 //*****************************************************************************
31 
32 #if defined (DEBUG)
33 #pragma GCC push_options
34 #pragma GCC optimize ("Og")
35 #endif // (DEBUG)
36 
37 #if defined (__cplusplus)
38 #ifdef __REDLIB__
39 #error Redlib does not support C++
40 #else
41 //*****************************************************************************
42 //
43 // The entry point for the C++ library startup
44 //
45 //*****************************************************************************
46 extern "C" {
47     extern void __libc_init_array(void);
48 }
49 #endif
50 #endif
51 
52 #define WEAK __attribute__ ((weak))
53 #define WEAK_AV __attribute__ ((weak, section(".after_vectors")))
54 #define ALIAS(f) __attribute__ ((weak, alias (#f)))
55 
56 //*****************************************************************************
57 #if defined (__cplusplus)
58 extern "C" {
59 #endif
60 
61 //*****************************************************************************
62 // Declaration of external SystemInit function
63 //*****************************************************************************
64 #if defined (__USE_CMSIS)
65 extern void SystemInit(void);
66 #endif // (__USE_CMSIS)
67 
68 //*****************************************************************************
69 // Forward declaration of the core exception handlers.
70 // When the application defines a handler (with the same name), this will
71 // automatically take precedence over these weak definitions
72 //*****************************************************************************
73      void ResetISR(void);
74 WEAK void NMI_Handler(void);
75 WEAK void HardFault_Handler(void);
76 WEAK void MemManage_Handler(void);
77 WEAK void BusFault_Handler(void);
78 WEAK void UsageFault_Handler(void);
79 WEAK void SVC_Handler(void);
80 WEAK void DebugMon_Handler(void);
81 WEAK void PendSV_Handler(void);
82 WEAK void SysTick_Handler(void);
83 WEAK void IntDefaultHandler(void);
84 //*****************************************************************************
85 // Forward declaration of the application IRQ handlers. When the application
86 // defines a handler (with the same name), this will automatically take
87 // precedence over weak definitions below
88 //*****************************************************************************
89 WEAK void CTI0_IRQHandler(void);
90 WEAK void DMA0_0_4_IRQHandler(void);
91 WEAK void DMA0_1_5_IRQHandler(void);
92 WEAK void DMA0_2_6_IRQHandler(void);
93 WEAK void DMA0_3_7_IRQHandler(void);
94 WEAK void DMA0_8_12_IRQHandler(void);
95 WEAK void DMA0_9_13_IRQHandler(void);
96 WEAK void DMA0_10_14_IRQHandler(void);
97 WEAK void DMA0_11_15_IRQHandler(void);
98 WEAK void DMA0_16_20_IRQHandler(void);
99 WEAK void DMA0_17_21_IRQHandler(void);
100 WEAK void DMA0_18_22_IRQHandler(void);
101 WEAK void DMA0_19_23_IRQHandler(void);
102 WEAK void DMA0_24_28_IRQHandler(void);
103 WEAK void DMA0_25_29_IRQHandler(void);
104 WEAK void DMA0_26_30_IRQHandler(void);
105 WEAK void DMA0_27_31_IRQHandler(void);
106 WEAK void DMA0_Error_IRQHandler(void);
107 WEAK void MCM0_IRQHandler(void);
108 WEAK void EWM_IRQHandler(void);
109 WEAK void LLWU0_IRQHandler(void);
110 WEAK void SIM_IRQHandler(void);
111 WEAK void MU_A_IRQHandler(void);
112 WEAK void Reserved39_IRQHandler(void);
113 WEAK void Software1_IRQHandler(void);
114 WEAK void Software2_IRQHandler(void);
115 WEAK void WDOG0_IRQHandler(void);
116 WEAK void SCG0_IRQHandler(void);
117 WEAK void QSPI_IRQHandler(void);
118 WEAK void LTC_IRQHandler(void);
119 WEAK void Reserved46_IRQHandler(void);
120 WEAK void SNVS_IRQHandler(void);
121 WEAK void TRNG0_IRQHandler(void);
122 WEAK void LPIT0_IRQHandler(void);
123 WEAK void PMC0_IRQHandler(void);
124 WEAK void CMC0_IRQHandler(void);
125 WEAK void LPTMR0_IRQHandler(void);
126 WEAK void LPTMR1_IRQHandler(void);
127 WEAK void TPM0_IRQHandler(void);
128 WEAK void TPM1_IRQHandler(void);
129 WEAK void TPM2_IRQHandler(void);
130 WEAK void TPM3_IRQHandler(void);
131 WEAK void FLEXIO0_IRQHandler(void);
132 WEAK void LPI2C0_IRQHandler(void);
133 WEAK void LPI2C1_IRQHandler(void);
134 WEAK void LPI2C2_IRQHandler(void);
135 WEAK void LPI2C3_IRQHandler(void);
136 WEAK void SAI0_IRQHandler(void);
137 WEAK void SAI1_IRQHandler(void);
138 WEAK void LPSPI0_IRQHandler(void);
139 WEAK void LPSPI1_IRQHandler(void);
140 WEAK void LPUART0_IRQHandler(void);
141 WEAK void LPUART1_IRQHandler(void);
142 WEAK void LPUART2_IRQHandler(void);
143 WEAK void LPUART3_IRQHandler(void);
144 WEAK void DPM_IRQHandler(void);
145 WEAK void PCTLA_IRQHandler(void);
146 WEAK void PCTLB_IRQHandler(void);
147 WEAK void ADC0_IRQHandler(void);
148 WEAK void ADC1_IRQHandler(void);
149 WEAK void CMP0_IRQHandler(void);
150 WEAK void CMP1_IRQHandler(void);
151 WEAK void DAC0_IRQHandler(void);
152 WEAK void DAC1_IRQHandler(void);
153 WEAK void WDOG1_IRQHandler(void);
154 WEAK void USB0_IRQHandler(void);
155 WEAK void USB1_IRQHandler(void);
156 WEAK void Reserved83_IRQHandler(void);
157 WEAK void WDOG2_IRQHandler(void);
158 WEAK void USBPHY_IRQHandler(void);
159 WEAK void CMC1_IRQHandler(void);
160 
161 //*****************************************************************************
162 // Forward declaration of the driver IRQ handlers. These are aliased
163 // to the IntDefaultHandler, which is a 'forever' loop. When the driver
164 // defines a handler (with the same name), this will automatically take
165 // precedence over these weak definitions
166 //*****************************************************************************
167 void CTI0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
168 void DMA0_0_4_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
169 void DMA0_1_5_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
170 void DMA0_2_6_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
171 void DMA0_3_7_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
172 void DMA0_8_12_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
173 void DMA0_9_13_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
174 void DMA0_10_14_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
175 void DMA0_11_15_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
176 void DMA0_16_20_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
177 void DMA0_17_21_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
178 void DMA0_18_22_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
179 void DMA0_19_23_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
180 void DMA0_24_28_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
181 void DMA0_25_29_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
182 void DMA0_26_30_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
183 void DMA0_27_31_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
184 void DMA0_Error_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
185 void MCM0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
186 void EWM_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
187 void LLWU0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
188 void SIM_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
189 void MU_A_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
190 void Reserved39_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
191 void Software1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
192 void Software2_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
193 void WDOG0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
194 void SCG0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
195 void QSPI_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
196 void LTC_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
197 void Reserved46_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
198 void SNVS_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
199 void TRNG0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
200 void LPIT0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
201 void PMC0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
202 void CMC0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
203 void LPTMR0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
204 void LPTMR1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
205 void TPM0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
206 void TPM1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
207 void TPM2_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
208 void TPM3_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
209 void FLEXIO0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
210 void LPI2C0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
211 void LPI2C1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
212 void LPI2C2_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
213 void LPI2C3_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
214 void SAI0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
215 void SAI1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
216 void LPSPI0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
217 void LPSPI1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
218 void LPUART0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
219 void LPUART1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
220 void LPUART2_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
221 void LPUART3_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
222 void DPM_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
223 void PCTLA_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
224 void PCTLB_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
225 void ADC0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
226 void ADC1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
227 void CMP0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
228 void CMP1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
229 void DAC0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
230 void DAC1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
231 void WDOG1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
232 void USB0_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
233 void USB1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
234 void Reserved83_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
235 void WDOG2_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
236 void USBPHY_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
237 void CMC1_DriverIRQHandler(void) ALIAS(IntDefaultHandler);
238 
239 //*****************************************************************************
240 // The entry point for the application.
241 // __main() is the entry point for Redlib based applications
242 // main() is the entry point for Newlib based applications
243 //*****************************************************************************
244 #if defined (__REDLIB__)
245 extern void __main(void);
246 #endif
247 extern int main(void);
248 
249 //*****************************************************************************
250 // External declaration for the pointer to the stack top from the Linker Script
251 //*****************************************************************************
252 extern void _vStackTop(void);
253 
254 //*****************************************************************************
255 #if defined (__cplusplus)
256 } // extern "C"
257 #endif
258 
259 //*****************************************************************************
260 // The vector table.
261 // This relies on the linker script to place at correct location in memory.
262 //*****************************************************************************
263 extern void (* const g_pfnVectors[])(void);
264 __attribute__ ((section(".isr_vector")))
265 void (* const g_pfnVectors[])(void) = {
266      &_vStackTop,                                  // The initial stack pointer
267      ResetISR,                                      // The reset handler
268      NMI_Handler,                                   //NMI Handler
269      HardFault_Handler,                             //Hard Fault Handler
270      MemManage_Handler,                             //MPU Fault Handler
271      BusFault_Handler,                              //Bus Fault Handler
272      UsageFault_Handler,                            //Usage Fault Handler
273      0,                                             //Reserved
274      0,                                             //Reserved
275      0,                                             //Reserved
276      0,                                             //Reserved
277      SVC_Handler,                                   //SVCall Handler
278      DebugMon_Handler,                              //Debug Monitor Handler
279      0,                                             //Reserved
280      PendSV_Handler,                                //PendSV Handler
281      SysTick_Handler,                               //SysTick Handler
282      //External Interrupts
283      CTI0_IRQHandler,                               //Cross Trigger Interface for CM4
284      DMA0_0_4_IRQHandler,                           //DMA Channel 0, 4 Transfer Complete
285      DMA0_1_5_IRQHandler,                           //DMA Channel 1, 5 Transfer Complete
286      DMA0_2_6_IRQHandler,                           //DMA Channel 2, 6 Transfer Complete
287      DMA0_3_7_IRQHandler,                           //DMA Channel 3, 7 Transfer Complete
288      DMA0_8_12_IRQHandler,                          //DMA Channel 8, 12 Transfer Complete
289      DMA0_9_13_IRQHandler,                          //DMA Channel 9, 13 Transfer Complete
290      DMA0_10_14_IRQHandler,                         //DMA Channel 10, 14 Transfer Complete
291      DMA0_11_15_IRQHandler,                         //DMA Channel 11, 15 Transfer Complete
292      DMA0_16_20_IRQHandler,                         //DMA Channel 16, 20 Transfer Complete
293      DMA0_17_21_IRQHandler,                         //DMA Channel 17, 21 Transfer Complete
294      DMA0_18_22_IRQHandler,                         //DMA Channel 18, 22 Transfer Complete
295      DMA0_19_23_IRQHandler,                         //DMA Channel 19, 23 Transfer Complete
296      DMA0_24_28_IRQHandler,                         //DMA Channel 24, 28 Transfer Complete
297      DMA0_25_29_IRQHandler,                         //DMA Channel 25, 29 Transfer Complete
298      DMA0_26_30_IRQHandler,                         //DMA Channel 26, 30 Transfer Complete
299      DMA0_27_31_IRQHandler,                         //DMA Channel 27, 31 Transfer Complete
300      DMA0_Error_IRQHandler,                         //DMA Error Interrupt - All Channels
301      MCM0_IRQHandler,                               //MCM Interrupt
302      EWM_IRQHandler,                                //External Watchdog Monitor Interrupt
303      LLWU0_IRQHandler,                              //Low Leakage Wake Up
304      SIM_IRQHandler,                                //System Integation Module
305      MU_A_IRQHandler,                               //Messaging Unit - Side A
306      Reserved39_IRQHandler,                         //Secured JTAG Controller
307      Software1_IRQHandler,                          //Software Interrupt
308      Software2_IRQHandler,                          //Software Interrupt
309      WDOG0_IRQHandler,                              //Watchdog Interrupt
310      SCG0_IRQHandler,                               //System Clock Generator for M4 domain
311      QSPI_IRQHandler,                               //Quad Serial Peripheral Interface
312      LTC_IRQHandler,                                //Low Power Trusted Cryptography
313      Reserved46_IRQHandler,                         //Reserved
314      SNVS_IRQHandler,                               //Secure Non-Volatile Storage Consolidated Interrupt
315      TRNG0_IRQHandler,                              //Random Number Generator
316      LPIT0_IRQHandler,                              //Low Power Periodic Interrupt Timer
317      PMC0_IRQHandler,                               //Power Management  Control interrupts for M4 domain
318      CMC0_IRQHandler,                               //Core Mode Controller interrupts for M4 domain
319      LPTMR0_IRQHandler,                             //Low Power Timer
320      LPTMR1_IRQHandler,                             //Low Power Timer
321      TPM0_IRQHandler,                               //Timer PWM module
322      TPM1_IRQHandler,                               //Timer PWM module
323      TPM2_IRQHandler,                               //Timer PWM module
324      TPM3_IRQHandler,                               //Timer PWM module
325      FLEXIO0_IRQHandler,                            //Flexible IO
326      LPI2C0_IRQHandler,                             //Inter-integrated circuit 0
327      LPI2C1_IRQHandler,                             //Inter-integrated circuit 1
328      LPI2C2_IRQHandler,                             //Inter-integrated circuit 2
329      LPI2C3_IRQHandler,                             //Inter-integrated circuit 3
330      SAI0_IRQHandler,                               //Serial Audio Interface
331      SAI1_IRQHandler,                               //Serial Audio Interface 1
332      LPSPI0_IRQHandler,                             //Low Power Serial Peripheral Interface
333      LPSPI1_IRQHandler,                             //Low Power Serial Peripheral Interface
334      LPUART0_IRQHandler,                            //Low Power UART
335      LPUART1_IRQHandler,                            //Low Power UART
336      LPUART2_IRQHandler,                            //Low Power UART
337      LPUART3_IRQHandler,                            //Low Power UART
338      DPM_IRQHandler,                                //Dynamic Process Monitor
339      PCTLA_IRQHandler,                              //Port A pin interrupt
340      PCTLB_IRQHandler,                              //Port B pin interrupt
341      ADC0_IRQHandler,                               //Analog to Digital Convertor
342      ADC1_IRQHandler,                               //Analog to Digital Convertor
343      CMP0_IRQHandler,                               //Comparator
344      CMP1_IRQHandler,                               //Comparator
345      DAC0_IRQHandler,                               //Digital to Analog Convertor
346      DAC1_IRQHandler,                               //Digital to Analog Convertor
347      WDOG1_IRQHandler,                              //Watchdog Interrupt from A7 subsystem
348      USB0_IRQHandler,                               //USB 0 Interrupt from A7 subsystem
349      USB1_IRQHandler,                               //USB 1 Interrupt from A7 subsystem
350      Reserved83_IRQHandler,                         //
351      WDOG2_IRQHandler,                              //Watchdog Interrupt from A7 subsystem
352      USBPHY_IRQHandler,                             //USB PHY (used in conjunction with USBOTG0)
353      CMC1_IRQHandler,                               //A7 resets
354 }; /* End of g_pfnVectors */
355 
356 //*****************************************************************************
357 // Functions to carry out the initialization of RW and BSS data sections. These
358 // are written as separate functions rather than being inlined within the
359 // ResetISR() function in order to cope with MCUs with multiple banks of
360 // memory.
361 //*****************************************************************************
362 __attribute__ ((section(".after_vectors.init_data")))
data_init(unsigned int romstart,unsigned int start,unsigned int len)363 void data_init(unsigned int romstart, unsigned int start, unsigned int len) {
364 	unsigned int *pulDest = (unsigned int*) start;
365 	unsigned int *pulSrc = (unsigned int*) romstart;
366 	unsigned int loop;
367 	for (loop = 0; loop < len; loop = loop + 4)
368 		*pulDest++ = *pulSrc++;
369 }
370 
371 __attribute__ ((section(".after_vectors.init_bss")))
bss_init(unsigned int start,unsigned int len)372 void bss_init(unsigned int start, unsigned int len) {
373 	unsigned int *pulDest = (unsigned int*) start;
374 	unsigned int loop;
375 	for (loop = 0; loop < len; loop = loop + 4)
376 		*pulDest++ = 0;
377 }
378 
379 //*****************************************************************************
380 // The following symbols are constructs generated by the linker, indicating
381 // the location of various points in the "Global Section Table". This table is
382 // created by the linker via the Code Red managed linker script mechanism. It
383 // contains the load address, execution address and length of each RW data
384 // section and the execution and length of each BSS (zero initialized) section.
385 //*****************************************************************************
386 extern unsigned int __data_section_table;
387 extern unsigned int __data_section_table_end;
388 extern unsigned int __bss_section_table;
389 extern unsigned int __bss_section_table_end;
390 
391 //*****************************************************************************
392 // Reset entry point for your code.
393 // Sets up a simple runtime environment and initializes the C/C++
394 // library.
395 //*****************************************************************************
396 __attribute__ ((naked, section(".after_vectors.reset")))
397 void
ResetISR(void)398 ResetISR(void) {
399     // Disable interrupts
400     __asm volatile ("cpsid i");
401 
402 #if defined (__USE_CMSIS)
403 // If __USE_CMSIS defined, then call CMSIS SystemInit code
404     SystemInit();
405 #endif // (__USE_CMSIS)
406 
407     //
408     // Copy the data sections from flash to SRAM.
409     //
410     unsigned int LoadAddr, ExeAddr, SectionLen;
411     unsigned int *SectionTableAddr;
412 
413     // Load base address of Global Section Table
414     SectionTableAddr = &__data_section_table;
415 
416     // Copy the data sections from flash to SRAM.
417     while (SectionTableAddr < &__data_section_table_end) {
418         LoadAddr = *SectionTableAddr++;
419         ExeAddr = *SectionTableAddr++;
420         SectionLen = *SectionTableAddr++;
421         data_init(LoadAddr, ExeAddr, SectionLen);
422     }
423 
424     // At this point, SectionTableAddr = &__bss_section_table;
425     // Zero fill the bss segment
426     while (SectionTableAddr < &__bss_section_table_end) {
427         ExeAddr = *SectionTableAddr++;
428         SectionLen = *SectionTableAddr++;
429         bss_init(ExeAddr, SectionLen);
430     }
431 
432 #if !defined (__USE_CMSIS)
433 // Assume that if __USE_CMSIS defined, then CMSIS SystemInit code
434 // will enable the FPU
435 #if defined (__VFP_FP__) && !defined (__SOFTFP__)
436     //
437     // Code to enable the Cortex-M4 FPU only included
438     // if appropriate build options have been selected.
439     // Code taken from Section 7.1, Cortex-M4 TRM (DDI0439C)
440     //
441     // Read CPACR (located at address 0xE000ED88)
442     // Set bits 20-23 to enable CP10 and CP11 coprocessors
443     // Write back the modified value to the CPACR
444     asm volatile ("LDR.W R0, =0xE000ED88\n\t"
445                   "LDR R1, [R0]\n\t"
446                   "ORR R1, R1, #(0xF << 20)\n\t"
447                   "STR R1, [R0]");
448 #endif // (__VFP_FP__) && !(__SOFTFP__)
449 #endif // (__USE_CMSIS)
450 
451 #if !defined (__USE_CMSIS)
452 // Assume that if __USE_CMSIS defined, then CMSIS SystemInit code
453 // will setup the VTOR register
454 
455     // Check to see if we are running the code from a non-zero
456     // address (eg RAM, external flash), in which case we need
457     // to modify the VTOR register to tell the CPU that the
458     // vector table is located at a non-0x0 address.
459     unsigned int * pSCB_VTOR = (unsigned int *) 0xE000ED08;
460     if ((unsigned int *)g_pfnVectors!=(unsigned int *) 0x00000000) {
461         *pSCB_VTOR = (unsigned int)g_pfnVectors;
462     }
463 #endif // (__USE_CMSIS)
464 
465 #if defined (__cplusplus)
466     //
467     // Call C++ library initialisation
468     //
469     __libc_init_array();
470 #endif
471 
472 
473     // Reenable interrupts
474     __asm volatile ("cpsie i");
475 
476 #if defined (__REDLIB__)
477     // Call the Redlib library, which in turn calls main()
478     __main() ;
479 #else
480     main();
481 #endif
482 
483     //
484     // main() shouldn't return, but if it does, we'll just enter an infinite loop
485     //
486     while (1) {
487         ;
488     }
489 }
490 
491 //*****************************************************************************
492 // Default core exception handlers. Override the ones here by defining your own
493 // handler routines in your application code.
494 //*****************************************************************************
NMI_Handler(void)495 WEAK void NMI_Handler(void)                                   //NMI Handler
496 { while(1) {}
497 }
498 
HardFault_Handler(void)499 WEAK void HardFault_Handler(void)                             //Hard Fault Handler
500 { while(1) {}
501 }
502 
MemManage_Handler(void)503 WEAK void MemManage_Handler(void)                             //MPU Fault Handler
504 { while(1) {}
505 }
506 
BusFault_Handler(void)507 WEAK void BusFault_Handler(void)                              //Bus Fault Handler
508 { while(1) {}
509 }
510 
UsageFault_Handler(void)511 WEAK void UsageFault_Handler(void)                            //Usage Fault Handler
512 { while(1) {}
513 }
514 
SVC_Handler(void)515 WEAK void SVC_Handler(void)                                   //SVCall Handler
516 { while(1) {}
517 }
518 
DebugMon_Handler(void)519 WEAK void DebugMon_Handler(void)                              //Debug Monitor Handler
520 { while(1) {}
521 }
522 
PendSV_Handler(void)523 WEAK void PendSV_Handler(void)                                //PendSV Handler
524 { while(1) {}
525 }
526 
SysTick_Handler(void)527 WEAK void SysTick_Handler(void)                               //SysTick Handler
528 { while(1) {}
529 }
530 
531 //*****************************************************************************
532 // Processor ends up here if an unexpected interrupt occurs or a specific
533 // handler is not present in the application code.
534 //*****************************************************************************
IntDefaultHandler(void)535 WEAK_AV void IntDefaultHandler(void)
536 { while(1) {}
537 }
538 
539 //*****************************************************************************
540 // Default application exception handlers. Override the ones here by defining
541 // your own handler routines in your application code. These routines call
542 // driver exception handlers or IntDefaultHandler() if no driver exception
543 // handler is included.
544 //*****************************************************************************
CTI0_IRQHandler(void)545 WEAK void CTI0_IRQHandler(void)                               //Cross Trigger Interface for CM4
546 {   CTI0_DriverIRQHandler();
547 }
548 
DMA0_0_4_IRQHandler(void)549 WEAK void DMA0_0_4_IRQHandler(void)                           //DMA Channel 0, 4 Transfer Complete
550 {   DMA0_0_4_DriverIRQHandler();
551 }
552 
DMA0_1_5_IRQHandler(void)553 WEAK void DMA0_1_5_IRQHandler(void)                           //DMA Channel 1, 5 Transfer Complete
554 {   DMA0_1_5_DriverIRQHandler();
555 }
556 
DMA0_2_6_IRQHandler(void)557 WEAK void DMA0_2_6_IRQHandler(void)                           //DMA Channel 2, 6 Transfer Complete
558 {   DMA0_2_6_DriverIRQHandler();
559 }
560 
DMA0_3_7_IRQHandler(void)561 WEAK void DMA0_3_7_IRQHandler(void)                           //DMA Channel 3, 7 Transfer Complete
562 {   DMA0_3_7_DriverIRQHandler();
563 }
564 
DMA0_8_12_IRQHandler(void)565 WEAK void DMA0_8_12_IRQHandler(void)                          //DMA Channel 8, 12 Transfer Complete
566 {   DMA0_8_12_DriverIRQHandler();
567 }
568 
DMA0_9_13_IRQHandler(void)569 WEAK void DMA0_9_13_IRQHandler(void)                          //DMA Channel 9, 13 Transfer Complete
570 {   DMA0_9_13_DriverIRQHandler();
571 }
572 
DMA0_10_14_IRQHandler(void)573 WEAK void DMA0_10_14_IRQHandler(void)                         //DMA Channel 10, 14 Transfer Complete
574 {   DMA0_10_14_DriverIRQHandler();
575 }
576 
DMA0_11_15_IRQHandler(void)577 WEAK void DMA0_11_15_IRQHandler(void)                         //DMA Channel 11, 15 Transfer Complete
578 {   DMA0_11_15_DriverIRQHandler();
579 }
580 
DMA0_16_20_IRQHandler(void)581 WEAK void DMA0_16_20_IRQHandler(void)                         //DMA Channel 16, 20 Transfer Complete
582 {   DMA0_16_20_DriverIRQHandler();
583 }
584 
DMA0_17_21_IRQHandler(void)585 WEAK void DMA0_17_21_IRQHandler(void)                         //DMA Channel 17, 21 Transfer Complete
586 {   DMA0_17_21_DriverIRQHandler();
587 }
588 
DMA0_18_22_IRQHandler(void)589 WEAK void DMA0_18_22_IRQHandler(void)                         //DMA Channel 18, 22 Transfer Complete
590 {   DMA0_18_22_DriverIRQHandler();
591 }
592 
DMA0_19_23_IRQHandler(void)593 WEAK void DMA0_19_23_IRQHandler(void)                         //DMA Channel 19, 23 Transfer Complete
594 {   DMA0_19_23_DriverIRQHandler();
595 }
596 
DMA0_24_28_IRQHandler(void)597 WEAK void DMA0_24_28_IRQHandler(void)                         //DMA Channel 24, 28 Transfer Complete
598 {   DMA0_24_28_DriverIRQHandler();
599 }
600 
DMA0_25_29_IRQHandler(void)601 WEAK void DMA0_25_29_IRQHandler(void)                         //DMA Channel 25, 29 Transfer Complete
602 {   DMA0_25_29_DriverIRQHandler();
603 }
604 
DMA0_26_30_IRQHandler(void)605 WEAK void DMA0_26_30_IRQHandler(void)                         //DMA Channel 26, 30 Transfer Complete
606 {   DMA0_26_30_DriverIRQHandler();
607 }
608 
DMA0_27_31_IRQHandler(void)609 WEAK void DMA0_27_31_IRQHandler(void)                         //DMA Channel 27, 31 Transfer Complete
610 {   DMA0_27_31_DriverIRQHandler();
611 }
612 
DMA0_Error_IRQHandler(void)613 WEAK void DMA0_Error_IRQHandler(void)                         //DMA Error Interrupt - All Channels
614 {   DMA0_Error_DriverIRQHandler();
615 }
616 
MCM0_IRQHandler(void)617 WEAK void MCM0_IRQHandler(void)                               //MCM Interrupt
618 {   MCM0_DriverIRQHandler();
619 }
620 
EWM_IRQHandler(void)621 WEAK void EWM_IRQHandler(void)                                //External Watchdog Monitor Interrupt
622 {   EWM_DriverIRQHandler();
623 }
624 
LLWU0_IRQHandler(void)625 WEAK void LLWU0_IRQHandler(void)                              //Low Leakage Wake Up
626 {   LLWU0_DriverIRQHandler();
627 }
628 
SIM_IRQHandler(void)629 WEAK void SIM_IRQHandler(void)                                //System Integation Module
630 {   SIM_DriverIRQHandler();
631 }
632 
MU_A_IRQHandler(void)633 WEAK void MU_A_IRQHandler(void)                               //Messaging Unit - Side A
634 {   MU_A_DriverIRQHandler();
635 }
636 
Software1_IRQHandler(void)637 WEAK void Software1_IRQHandler(void)                          //Software Interrupt
638 {   Software1_DriverIRQHandler();
639 }
640 
Software2_IRQHandler(void)641 WEAK void Software2_IRQHandler(void)                          //Software Interrupt
642 {   Software2_DriverIRQHandler();
643 }
644 
WDOG0_IRQHandler(void)645 WEAK void WDOG0_IRQHandler(void)                              //Watchdog Interrupt
646 {   WDOG0_DriverIRQHandler();
647 }
648 
SCG0_IRQHandler(void)649 WEAK void SCG0_IRQHandler(void)                               //System Clock Generator for M4 domain
650 {   SCG0_DriverIRQHandler();
651 }
652 
QSPI_IRQHandler(void)653 WEAK void QSPI_IRQHandler(void)                               //Quad Serial Peripheral Interface
654 {   QSPI_DriverIRQHandler();
655 }
656 
LTC_IRQHandler(void)657 WEAK void LTC_IRQHandler(void)                                //Low Power Trusted Cryptography
658 {   LTC_DriverIRQHandler();
659 }
660 
SNVS_IRQHandler(void)661 WEAK void SNVS_IRQHandler(void)                               //Secure Non-Volatile Storage Consolidated Interrupt
662 {   SNVS_DriverIRQHandler();
663 }
664 
TRNG0_IRQHandler(void)665 WEAK void TRNG0_IRQHandler(void)                              //Random Number Generator
666 {   TRNG0_DriverIRQHandler();
667 }
668 
LPIT0_IRQHandler(void)669 WEAK void LPIT0_IRQHandler(void)                              //Low Power Periodic Interrupt Timer
670 {   LPIT0_DriverIRQHandler();
671 }
672 
PMC0_IRQHandler(void)673 WEAK void PMC0_IRQHandler(void)                               //Power Management  Control interrupts for M4 domain
674 {   PMC0_DriverIRQHandler();
675 }
676 
CMC0_IRQHandler(void)677 WEAK void CMC0_IRQHandler(void)                               //Core Mode Controller interrupts for M4 domain
678 {   CMC0_DriverIRQHandler();
679 }
680 
LPTMR0_IRQHandler(void)681 WEAK void LPTMR0_IRQHandler(void)                             //Low Power Timer
682 {   LPTMR0_DriverIRQHandler();
683 }
684 
LPTMR1_IRQHandler(void)685 WEAK void LPTMR1_IRQHandler(void)                             //Low Power Timer
686 {   LPTMR1_DriverIRQHandler();
687 }
688 
TPM0_IRQHandler(void)689 WEAK void TPM0_IRQHandler(void)                               //Timer PWM module
690 {   TPM0_DriverIRQHandler();
691 }
692 
TPM1_IRQHandler(void)693 WEAK void TPM1_IRQHandler(void)                               //Timer PWM module
694 {   TPM1_DriverIRQHandler();
695 }
696 
TPM2_IRQHandler(void)697 WEAK void TPM2_IRQHandler(void)                               //Timer PWM module
698 {   TPM2_DriverIRQHandler();
699 }
700 
TPM3_IRQHandler(void)701 WEAK void TPM3_IRQHandler(void)                               //Timer PWM module
702 {   TPM3_DriverIRQHandler();
703 }
704 
FLEXIO0_IRQHandler(void)705 WEAK void FLEXIO0_IRQHandler(void)                            //Flexible IO
706 {   FLEXIO0_DriverIRQHandler();
707 }
708 
LPI2C0_IRQHandler(void)709 WEAK void LPI2C0_IRQHandler(void)                             //Inter-integrated circuit 0
710 {   LPI2C0_DriverIRQHandler();
711 }
712 
LPI2C1_IRQHandler(void)713 WEAK void LPI2C1_IRQHandler(void)                             //Inter-integrated circuit 1
714 {   LPI2C1_DriverIRQHandler();
715 }
716 
LPI2C2_IRQHandler(void)717 WEAK void LPI2C2_IRQHandler(void)                             //Inter-integrated circuit 2
718 {   LPI2C2_DriverIRQHandler();
719 }
720 
LPI2C3_IRQHandler(void)721 WEAK void LPI2C3_IRQHandler(void)                             //Inter-integrated circuit 3
722 {   LPI2C3_DriverIRQHandler();
723 }
724 
SAI0_IRQHandler(void)725 WEAK void SAI0_IRQHandler(void)                               //Serial Audio Interface
726 {   SAI0_DriverIRQHandler();
727 }
728 
SAI1_IRQHandler(void)729 WEAK void SAI1_IRQHandler(void)                               //Serial Audio Interface 1
730 {   SAI1_DriverIRQHandler();
731 }
732 
LPSPI0_IRQHandler(void)733 WEAK void LPSPI0_IRQHandler(void)                             //Low Power Serial Peripheral Interface
734 {   LPSPI0_DriverIRQHandler();
735 }
736 
LPSPI1_IRQHandler(void)737 WEAK void LPSPI1_IRQHandler(void)                             //Low Power Serial Peripheral Interface
738 {   LPSPI1_DriverIRQHandler();
739 }
740 
LPUART0_IRQHandler(void)741 WEAK void LPUART0_IRQHandler(void)                            //Low Power UART
742 {   LPUART0_DriverIRQHandler();
743 }
744 
LPUART1_IRQHandler(void)745 WEAK void LPUART1_IRQHandler(void)                            //Low Power UART
746 {   LPUART1_DriverIRQHandler();
747 }
748 
LPUART2_IRQHandler(void)749 WEAK void LPUART2_IRQHandler(void)                            //Low Power UART
750 {   LPUART2_DriverIRQHandler();
751 }
752 
LPUART3_IRQHandler(void)753 WEAK void LPUART3_IRQHandler(void)                            //Low Power UART
754 {   LPUART3_DriverIRQHandler();
755 }
756 
DPM_IRQHandler(void)757 WEAK void DPM_IRQHandler(void)                                //Dynamic Process Monitor
758 {   DPM_DriverIRQHandler();
759 }
760 
PCTLA_IRQHandler(void)761 WEAK void PCTLA_IRQHandler(void)                              //Port A pin interrupt
762 {   PCTLA_DriverIRQHandler();
763 }
764 
PCTLB_IRQHandler(void)765 WEAK void PCTLB_IRQHandler(void)                              //Port B pin interrupt
766 {   PCTLB_DriverIRQHandler();
767 }
768 
ADC0_IRQHandler(void)769 WEAK void ADC0_IRQHandler(void)                               //Analog to Digital Convertor
770 {   ADC0_DriverIRQHandler();
771 }
772 
ADC1_IRQHandler(void)773 WEAK void ADC1_IRQHandler(void)                               //Analog to Digital Convertor
774 {   ADC1_DriverIRQHandler();
775 }
776 
CMP0_IRQHandler(void)777 WEAK void CMP0_IRQHandler(void)                               //Comparator
778 {   CMP0_DriverIRQHandler();
779 }
780 
CMP1_IRQHandler(void)781 WEAK void CMP1_IRQHandler(void)                               //Comparator
782 {   CMP1_DriverIRQHandler();
783 }
784 
DAC0_IRQHandler(void)785 WEAK void DAC0_IRQHandler(void)                               //Digital to Analog Convertor
786 {   DAC0_DriverIRQHandler();
787 }
788 
DAC1_IRQHandler(void)789 WEAK void DAC1_IRQHandler(void)                               //Digital to Analog Convertor
790 {   DAC1_DriverIRQHandler();
791 }
792 
WDOG1_IRQHandler(void)793 WEAK void WDOG1_IRQHandler(void)                              //Watchdog Interrupt from A7 subsystem
794 {   WDOG1_DriverIRQHandler();
795 }
796 
USB0_IRQHandler(void)797 WEAK void USB0_IRQHandler(void)                               //USB 0 Interrupt from A7 subsystem
798 {   USB0_DriverIRQHandler();
799 }
800 
USB1_IRQHandler(void)801 WEAK void USB1_IRQHandler(void)                               //USB 1 Interrupt from A7 subsystem
802 {   USB1_DriverIRQHandler();
803 }
804 
WDOG2_IRQHandler(void)805 WEAK void WDOG2_IRQHandler(void)                              //Watchdog Interrupt from A7 subsystem
806 {   WDOG2_DriverIRQHandler();
807 }
808 
USBPHY_IRQHandler(void)809 WEAK void USBPHY_IRQHandler(void)                             //USB PHY (used in conjunction with USBOTG0)
810 {   USBPHY_DriverIRQHandler();
811 }
812 
CMC1_IRQHandler(void)813 WEAK void CMC1_IRQHandler(void)                               //A7 resets
814 {  CMC1_DriverIRQHandler();
815 }
816 
817 //*****************************************************************************
818 
819 #if defined (DEBUG)
820 #pragma GCC pop_options
821 #endif // (DEBUG)
822