Caesar Wang | b400374 | 2016-10-12 08:10:12 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
dp-arm | fa3cf0b | 2017-05-03 09:38:09 +0100 | [diff] [blame] | 4 | * SPDX-License-Identifier: BSD-3-Clause |
Caesar Wang | b400374 | 2016-10-12 08:10:12 +0800 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include "rk3399_mcu.h" |
| 8 | |
| 9 | /* Stack configuration */ |
Lin Huang | 00960ba | 2018-04-20 15:55:21 +0800 | [diff] [blame^] | 10 | #define STACK_SIZE 0x00000040 |
Caesar Wang | b400374 | 2016-10-12 08:10:12 +0800 | [diff] [blame] | 11 | __attribute__ ((section(".co_stack"))) |
| 12 | unsigned long pstack[STACK_SIZE]; |
| 13 | |
| 14 | /* Macro definition */ |
| 15 | #define WEAK __attribute__ ((weak)) |
| 16 | |
| 17 | /* System exception vector handler */ |
| 18 | __attribute__ ((used)) |
| 19 | void WEAK reset_handler(void); |
| 20 | void WEAK nmi_handler(void); |
| 21 | void WEAK hardware_fault_handler(void); |
| 22 | void WEAK svc_handler(void); |
| 23 | void WEAK pend_sv_handler(void); |
| 24 | void WEAK systick_handler(void); |
| 25 | |
| 26 | extern int main(void); |
| 27 | |
| 28 | /* Function prototypes */ |
| 29 | static void default_reset_handler(void); |
| 30 | static void default_handler(void); |
| 31 | |
| 32 | /* |
| 33 | * The minimal vector table for a Cortex M3. Note that the proper constructs |
| 34 | * must be placed on this to ensure that it ends up at physical address |
| 35 | * 0x00000000. |
| 36 | */ |
| 37 | __attribute__ ((used, section(".isr_vector"))) |
| 38 | void (* const g_pfnVectors[])(void) = { |
| 39 | /* core Exceptions */ |
| 40 | (void *)&pstack[STACK_SIZE], /* the initial stack pointer */ |
| 41 | reset_handler, |
| 42 | nmi_handler, |
| 43 | hardware_fault_handler, |
| 44 | 0, 0, 0, 0, 0, 0, 0, |
| 45 | svc_handler, |
| 46 | 0, 0, |
| 47 | pend_sv_handler, |
| 48 | systick_handler, |
| 49 | |
| 50 | /* external exceptions */ |
| 51 | 0, 0, 0, 0, 0, 0, 0, |
| 52 | 0, 0, 0, 0, 0, 0, 0, |
| 53 | 0, 0, 0, 0, 0, 0, 0, |
| 54 | 0, 0, 0, 0, 0, 0, 0, |
| 55 | 0, 0, 0, 0 |
| 56 | }; |
| 57 | |
| 58 | /** |
| 59 | * This is the code that gets called when the processor first |
| 60 | * starts execution following a reset event. Only the absolutely |
| 61 | * necessary set is performed, after which the application |
| 62 | * supplied main() routine is called. |
| 63 | */ |
| 64 | static void default_reset_handler(void) |
| 65 | { |
| 66 | /* call the application's entry point */ |
| 67 | main(); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Provide weak aliases for each Exception handler to the Default_Handler. |
| 72 | * As they are weak aliases, any function with the same name will override |
| 73 | * this definition. |
| 74 | */ |
| 75 | #pragma weak reset_handler = default_reset_handler |
| 76 | #pragma weak nmi_handler = default_handler |
| 77 | #pragma weak hardware_fault_handler = default_handler |
| 78 | #pragma weak svc_handler = default_handler |
| 79 | #pragma weak pend_sv_handler = default_handler |
| 80 | #pragma weak systick_handler = default_handler |
| 81 | |
| 82 | /** |
| 83 | * This is the code that gets called when the processor receives |
| 84 | * an unexpected interrupt. This simply enters an infinite loop, |
| 85 | * preserving the system state for examination by a debugger. |
| 86 | */ |
| 87 | static void default_handler(void) |
| 88 | { |
| 89 | /* go into an infinite loop. */ |
| 90 | while (1) |
| 91 | ; |
| 92 | } |