1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <stdint.h> 18 #include <seos.h> 19 20 #define VEC_(nm, pfx) void nm##pfx(void) __attribute__ ((weak, alias ("IntDefaultHandler"))) 21 #define VEC(nm) VEC_(nm, _Handler) 22 #define VECI(nm) VEC_(nm, _IRQHandler) 23 24 25 26 #ifndef OS_STACK_SIZE 27 #define OS_STACK_SIZE 2048 28 #endif 29 30 void __attribute__ ((weak)) IntDefaultHandler(void); 31 VEC(NMI); 32 VEC(HardFault); 33 VEC(MemoryManagemntFault); 34 VEC(BusFault); 35 VEC(UsageFault); 36 VEC(SVC); 37 VEC(DebugMonitor); 38 VEC(PendSV); 39 VEC(SysTick); 40 41 VECI(WWDG); 42 VECI(EXTI16_PVD); 43 VECI(EXTI21_TAMP_STAMP); 44 VECI(EXTI22_RTC_WKUP); 45 VECI(FLASH); 46 VECI(RCC); 47 VECI(EXTI0); 48 VECI(EXTI1); 49 VECI(EXTI2); 50 VECI(EXTI3); 51 VECI(EXTI4); 52 VECI(DMA1_Stream0); 53 VECI(DMA1_Stream1); 54 VECI(DMA1_Stream2); 55 VECI(DMA1_Stream3); 56 VECI(DMA1_Stream4); 57 VECI(DMA1_Stream5); 58 VECI(DMA1_Stream6); 59 VECI(ADC); 60 VECI(EXTI9_5); 61 VECI(TIM1_BRK_TIM9); 62 VECI(TIM1_UP_TIM10); 63 VECI(TIM1_TRG_COM_TIM11); 64 VECI(TIM1_CC); 65 VECI(TIM2); 66 VECI(TIM3); 67 VECI(TIM4); 68 VECI(I2C1_EV); 69 VECI(I2C1_ER); 70 VECI(I2C2_EV); 71 VECI(I2C2_ER); 72 VECI(SPI1); 73 VECI(SPI2); 74 VECI(USART1); 75 VECI(USART2); 76 VECI(EXTI15_10); 77 VECI(EXTI17_RTC_ALARM); 78 VECI(EXTI18_OTG_FS_WKUP); 79 VECI(DMA1_Stream7); 80 VECI(SDIO); 81 VECI(TIM5); 82 VECI(SPI3); 83 VECI(DMA2_Stream0); 84 VECI(DMA2_Stream1); 85 VECI(DMA2_Stream2); 86 VECI(DMA2_Stream3); 87 VECI(DMA2_Stream4); 88 VECI(OTG_FS); 89 VECI(DMA2_Stream5); 90 VECI(DMA2_Stream6); 91 VECI(DMA2_Stream7); 92 VECI(USART6); 93 VECI(I2C3_EV); 94 VECI(I2C3_ER); 95 VECI(FPU); 96 VECI(SPI4); 97 VECI(SPI5); 98 99 100 //stack top (provided by linker) 101 extern uint32_t __stack_top[]; 102 extern uint32_t __data_data[]; 103 extern uint32_t __data_start[]; 104 extern uint32_t __data_end[]; 105 extern uint32_t __bss_start[]; 106 extern uint32_t __bss_end[]; 107 108 109 110 111 //OS stack 112 uint64_t __attribute__ ((section (".stack"))) _STACK[OS_STACK_SIZE / sizeof(uint64_t)]; 113 114 void __attribute__((noreturn)) IntDefaultHandler(void) 115 { 116 while (1) { 117 //ints off 118 asm("cpsid i"); 119 120 //spin/sleep/whatever forever 121 asm("wfi":::"memory"); 122 } 123 } 124 125 void __attribute__((noreturn)) ResetISR(void); 126 void __attribute__((noreturn)) ResetISR(void) 127 { 128 uint32_t *dst, *src, *end; 129 130 //copy data 131 dst = __data_start; 132 src = __data_data; 133 end = __data_end; 134 while(dst != end) 135 *dst++ = *src++; 136 137 //init bss 138 dst = __bss_start; 139 end = __bss_end; 140 while(dst != end) 141 *dst++ = 0; 142 143 //call code 144 osMain(); 145 146 //if main returns => bad 147 while(1); 148 } 149 150 151 //vector table 152 __attribute__ ((section(".vectors"))) __attribute__((naked)) void __VECTORS(void); 153 __attribute__ ((section(".vectors"))) __attribute__((naked)) void __VECTORS(void) 154 { 155 asm volatile ( 156 ".word __stack_top \n" 157 ".word ResetISR + 1 \n" 158 ".word NMI_Handler + 1 \n" 159 ".word HardFault_Handler + 1 \n" 160 ".word MemoryManagemntFault_Handler + 1 \n" 161 ".word BusFault_Handler + 1 \n" 162 ".word UsageFault_Handler + 1 \n" 163 ".word 0 \n" 164 ".word 0 \n" 165 ".word 0 \n" 166 ".word 0 \n" 167 ".word SVC_Handler + 1 \n" 168 ".word DebugMonitor_Handler + 1 \n" 169 ".word 0 \n" 170 ".word PendSV_Handler + 1 \n" 171 ".word SysTick_Handler + 1 \n" 172 173 ".word WWDG_IRQHandler + 1 \n" 174 ".word EXTI16_PVD_IRQHandler + 1 \n" 175 ".word EXTI21_TAMP_STAMP_IRQHandler + 1 \n" 176 ".word EXTI22_RTC_WKUP_IRQHandler + 1 \n" 177 ".word FLASH_IRQHandler + 1 \n" 178 ".word RCC_IRQHandler + 1 \n" 179 ".word EXTI0_IRQHandler + 1 \n" 180 ".word EXTI1_IRQHandler + 1 \n" 181 ".word EXTI2_IRQHandler + 1 \n" 182 ".word EXTI3_IRQHandler + 1 \n" 183 ".word EXTI4_IRQHandler + 1 \n" 184 ".word DMA1_Stream0_IRQHandler + 1 \n" 185 ".word DMA1_Stream1_IRQHandler + 1 \n" 186 ".word DMA1_Stream2_IRQHandler + 1 \n" 187 ".word DMA1_Stream3_IRQHandler + 1 \n" 188 ".word DMA1_Stream4_IRQHandler + 1 \n" 189 ".word DMA1_Stream5_IRQHandler + 1 \n" 190 ".word DMA1_Stream6_IRQHandler + 1 \n" 191 ".word ADC_IRQHandler + 1 \n" 192 ".word 0 \n" 193 ".word 0 \n" 194 ".word 0 \n" 195 ".word 0 \n" 196 ".word EXTI9_5_IRQHandler + 1 \n" 197 ".word TIM1_BRK_TIM9_IRQHandler + 1 \n" 198 ".word TIM1_UP_TIM10_IRQHandler + 1 \n" 199 ".word TIM1_TRG_COM_TIM11_IRQHandler + 1\n" 200 ".word TIM1_CC_IRQHandler + 1 \n" 201 ".word TIM2_IRQHandler + 1 \n" 202 ".word TIM3_IRQHandler + 1 \n" 203 ".word TIM4_IRQHandler + 1 \n" 204 ".word I2C1_EV_IRQHandler + 1 \n" 205 ".word I2C1_ER_IRQHandler + 1 \n" 206 ".word I2C2_EV_IRQHandler + 1 \n" 207 ".word I2C2_ER_IRQHandler + 1 \n" 208 ".word SPI1_IRQHandler + 1 \n" 209 ".word SPI2_IRQHandler + 1 \n" 210 ".word USART1_IRQHandler + 1 \n" 211 ".word USART2_IRQHandler + 1 \n" 212 ".word 0 \n" 213 ".word EXTI15_10_IRQHandler + 1 \n" 214 ".word EXTI17_RTC_ALARM_IRQHandler + 1 \n" 215 ".word EXTI18_OTG_FS_WKUP_IRQHandler + 1\n" 216 ".word 0 \n" 217 ".word 0 \n" 218 ".word 0 \n" 219 ".word 0 \n" 220 ".word DMA1_Stream7_IRQHandler + 1 \n" 221 ".word 0 \n" 222 ".word SDIO_IRQHandler + 1 \n" 223 ".word TIM5_IRQHandler + 1 \n" 224 ".word SPI3_IRQHandler + 1 \n" 225 ".word 0 \n" 226 ".word 0 \n" 227 ".word 0 \n" 228 ".word 0 \n" 229 ".word DMA2_Stream0_IRQHandler + 1 \n" 230 ".word DMA2_Stream1_IRQHandler + 1 \n" 231 ".word DMA2_Stream2_IRQHandler + 1 \n" 232 ".word DMA2_Stream3_IRQHandler + 1 \n" 233 ".word DMA2_Stream4_IRQHandler + 1 \n" 234 ".word 0 \n" 235 ".word 0 \n" 236 ".word 0 \n" 237 ".word 0 \n" 238 ".word 0 \n" 239 ".word 0 \n" 240 ".word OTG_FS_IRQHandler + 1 \n" 241 ".word DMA2_Stream5_IRQHandler + 1 \n" 242 ".word DMA2_Stream6_IRQHandler + 1 \n" 243 ".word DMA2_Stream7_IRQHandler + 1 \n" 244 ".word USART6_IRQHandler + 1 \n" 245 ".word I2C3_EV_IRQHandler + 1 \n" 246 ".word I2C3_ER_IRQHandler + 1 \n" 247 ".word 0 \n" 248 ".word 0 \n" 249 ".word 0 \n" 250 ".word 0 \n" 251 ".word 0 \n" 252 ".word 0 \n" 253 ".word 0 \n" 254 ".word FPU_IRQHandler + 1 \n" 255 ".word 0 \n" 256 ".word 0 \n" 257 ".word SPI4_IRQHandler + 1 \n" 258 ".word SPI5_IRQHandler + 1 \n" 259 ); 260 }; 261 262 263
