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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [CORTEX_MPU_LPC1768_GCC_RedSuite/] [src/] [cr_startup_lpc17.c] - Rev 598
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//***************************************************************************** // +--+ // | ++----+ // +-++ | // | | // +-+--+ | // | +--+--+ // +----+ Copyright (c) 2009 Code Red Technologies Ltd. // // Microcontroller Startup code for use with Red Suite // // Software License Agreement // // The software is owned by Code Red Technologies and/or its suppliers, and is // protected under applicable copyright laws. All rights are reserved. Any // use in violation of the foregoing restrictions may subject the user to criminal // sanctions under applicable laws, as well as to civil liability for the breach // of the terms and conditions of this license. // // THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED // OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. // USE OF THIS SOFTWARE FOR COMMERCIAL DEVELOPMENT AND/OR EDUCATION IS SUBJECT // TO A CURRENT END USER LICENSE AGREEMENT (COMMERCIAL OR EDUCATIONAL) WITH // CODE RED TECHNOLOGIES LTD. // //***************************************************************************** #define WEAK __attribute__ ((weak)) #define ALIAS(f) __attribute__ ((weak, alias (#f))) //***************************************************************************** // // Forward declaration of the default handlers. // //***************************************************************************** void Reset_Handler(void); void ResetISR(void) ALIAS(Reset_Handler); static void NMI_Handler(void); static void HardFault_Handler(void); static void MemManage_Handler(void) __attribute__((naked)); static void BusFault_Handler(void) __attribute__((naked)); static void UsageFault_Handler(void) __attribute__((naked)); static void DebugMon_Handler(void); //***************************************************************************** // // Forward declaration of the specific IRQ handlers. These are aliased // to the IntDefaultHandler, which is a 'forever' loop. When the application // defines a handler (with the same name), this will automatically take // precedence over these weak definitions // //***************************************************************************** void WDT_IRQHandler(void) ALIAS(IntDefaultHandler); void TIMER0_IRQHandler(void) ALIAS(IntDefaultHandler); void TIMER1_IRQHandler(void) ALIAS(IntDefaultHandler); void TIMER2_IRQHandler(void) ALIAS(IntDefaultHandler); void TIMER3_IRQHandler(void) ALIAS(IntDefaultHandler); void UART0_IRQHandler(void) ALIAS(IntDefaultHandler); void UART1_IRQHandler(void) ALIAS(IntDefaultHandler); void UART2_IRQHandler(void) ALIAS(IntDefaultHandler); void UART3_IRQHandler(void) ALIAS(IntDefaultHandler); void PWM1_IRQHandler(void) ALIAS(IntDefaultHandler); void I2C0_IRQHandler(void) ALIAS(IntDefaultHandler); void I2C1_IRQHandler(void) ALIAS(IntDefaultHandler); void I2C2_IRQHandler(void) ALIAS(IntDefaultHandler); void SPI_IRQHandler(void) ALIAS(IntDefaultHandler); void SSP0_IRQHandler(void) ALIAS(IntDefaultHandler); void SSP1_IRQHandler(void) ALIAS(IntDefaultHandler); void PLL0_IRQHandler(void) ALIAS(IntDefaultHandler); void RTC_IRQHandler(void) ALIAS(IntDefaultHandler); void EINT0_IRQHandler(void) ALIAS(IntDefaultHandler); void EINT1_IRQHandler(void) ALIAS(IntDefaultHandler); void EINT2_IRQHandler(void) ALIAS(IntDefaultHandler); void EINT3_IRQHandler(void) ALIAS(IntDefaultHandler); void ADC_IRQHandler(void) ALIAS(IntDefaultHandler); void BOD_IRQHandler(void) ALIAS(IntDefaultHandler); void USB_IRQHandler(void) ALIAS(IntDefaultHandler); void CAN_IRQHandler(void) ALIAS(IntDefaultHandler); void DMA_IRQHandler(void) ALIAS(IntDefaultHandler); void I2S_IRQHandler(void) ALIAS(IntDefaultHandler); void ENET_IRQHandler(void) ALIAS(IntDefaultHandler); void RIT_IRQHandler(void) ALIAS(IntDefaultHandler); void MCPWM_IRQHandler(void) ALIAS(IntDefaultHandler); void QEI_IRQHandler(void) ALIAS(IntDefaultHandler); void PLL1_IRQHandler(void) ALIAS(IntDefaultHandler); extern void xPortSysTickHandler(void); extern void xPortPendSVHandler(void); extern void vPortSVCHandler( void ); //***************************************************************************** // // The entry point for the C++ library startup // //***************************************************************************** extern WEAK void __libc_init_array(void); //***************************************************************************** // // The entry point for the application. // __main() is the entry point for redlib based applications // main() is the entry point for newlib based applications // //***************************************************************************** extern WEAK void __main(void); extern WEAK void main(void); //***************************************************************************** // // External declaration for the pointer to the stack top from the Linker Script // //***************************************************************************** extern void _vStackTop; //***************************************************************************** // // The vector table. // This relies on the linker script to place at correct location in memory. // //***************************************************************************** __attribute__ ((section(".isr_vector"))) void (* const g_pfnVectors[])(void) = { // Core Level - CM3 (void *)&_vStackTop, // The initial stack pointer Reset_Handler, // The reset handler NMI_Handler, // The NMI handler HardFault_Handler, // The hard fault handler MemManage_Handler, // The MPU fault handler BusFault_Handler, // The bus fault handler UsageFault_Handler, // The usage fault handler 0, // Reserved 0, // Reserved 0, // Reserved 0, // Reserved vPortSVCHandler, // SVCall handler DebugMon_Handler, // Debug monitor handler 0, // Reserved xPortPendSVHandler, // The PendSV handler xPortSysTickHandler, // The SysTick handler // Chip Level - LPC17 WDT_IRQHandler, // 16, 0x40 - WDT TIMER0_IRQHandler, // 17, 0x44 - TIMER0 TIMER1_IRQHandler, // 18, 0x48 - TIMER1 TIMER2_IRQHandler, // 19, 0x4c - TIMER2 TIMER3_IRQHandler, // 20, 0x50 - TIMER3 UART0_IRQHandler, // 21, 0x54 - UART0 UART1_IRQHandler, // 22, 0x58 - UART1 UART2_IRQHandler, // 23, 0x5c - UART2 UART3_IRQHandler, // 24, 0x60 - UART3 PWM1_IRQHandler, // 25, 0x64 - PWM1 I2C0_IRQHandler, // 26, 0x68 - I2C0 I2C1_IRQHandler, // 27, 0x6c - I2C1 I2C2_IRQHandler, // 28, 0x70 - I2C2 SPI_IRQHandler, // 29, 0x74 - SPI SSP0_IRQHandler, // 30, 0x78 - SSP0 SSP1_IRQHandler, // 31, 0x7c - SSP1 PLL0_IRQHandler, // 32, 0x80 - PLL0 (Main PLL) RTC_IRQHandler, // 33, 0x84 - RTC EINT0_IRQHandler, // 34, 0x88 - EINT0 EINT1_IRQHandler, // 35, 0x8c - EINT1 EINT2_IRQHandler, // 36, 0x90 - EINT2 EINT3_IRQHandler, // 37, 0x94 - EINT3 ADC_IRQHandler, // 38, 0x98 - ADC BOD_IRQHandler, // 39, 0x9c - BOD USB_IRQHandler, // 40, 0xA0 - USB CAN_IRQHandler, // 41, 0xa4 - CAN DMA_IRQHandler, // 42, 0xa8 - GP DMA I2S_IRQHandler, // 43, 0xac - I2S ENET_IRQHandler, // Ethernet. RIT_IRQHandler, // 45, 0xb4 - RITINT MCPWM_IRQHandler, // 46, 0xb8 - Motor Control PWM QEI_IRQHandler, // 47, 0xbc - Quadrature Encoder PLL1_IRQHandler, // 48, 0xc0 - PLL1 (USB PLL) }; //***************************************************************************** // // The following are constructs created by the linker, indicating where the // the "data" and "bss" segments reside in memory. The initializers for the // for the "data" segment resides immediately following the "text" segment. // //***************************************************************************** extern unsigned long _etext; extern unsigned long _data; extern unsigned long _edata; extern unsigned long _bss; extern unsigned long _ebss; extern unsigned long __privileged_data_start__; extern unsigned long __privileged_data_end__; //***************************************************************************** // Reset entry point for your code. // Sets up a simple runtime environment and initializes the C/C++ // library. // //***************************************************************************** void Reset_Handler(void) { unsigned long *pulSrc, *pulDest; // // Copy the data segment initializers from flash to SRAM. // pulSrc = &_etext; for(pulDest = &_data; pulDest < &_edata; ) { *pulDest++ = *pulSrc++; } // // Zero fill the bss segment. This is done with inline assembly since this // will clear the value of pulDest if it is not kept in a register. // __asm(" ldr r0, =_bss\n" " ldr r1, =_ebss\n" " mov r2, #0\n" " .thumb_func\n" "zero_loop_bss:\n" " cmp r0, r1\n" " it lt\n" " strlt r2, [r0], #4\n" " blt zero_loop_bss"); // // Call C++ library initilisation, if present // if (__libc_init_array) __libc_init_array() ; // // Call the application's entry point. // __main() is the entry point for redlib based applications (which calls main()) // main() is the entry point for newlib based applications // if (__main) __main() ; else main() ; // // main() shouldn't return, but if it does, we'll just enter an infinite loop // while (1) { ; } } //***************************************************************************** // // This is the code that gets called when the processor receives a NMI. This // simply enters an infinite loop, preserving the system state for examination // by a debugger. // //***************************************************************************** static void NMI_Handler(void) { while(1) { } } static void HardFault_Handler(void) { for( ;; ); } void pop_registers_from_fault_stack(unsigned int * hardfault_args) { unsigned int stacked_r0; unsigned int stacked_r1; unsigned int stacked_r2; unsigned int stacked_r3; unsigned int stacked_r12; unsigned int stacked_lr; unsigned int stacked_pc; unsigned int stacked_psr; stacked_r0 = ((unsigned long) hardfault_args[0]); stacked_r1 = ((unsigned long) hardfault_args[1]); stacked_r2 = ((unsigned long) hardfault_args[2]); stacked_r3 = ((unsigned long) hardfault_args[3]); stacked_r12 = ((unsigned long) hardfault_args[4]); stacked_lr = ((unsigned long) hardfault_args[5]); stacked_pc = ((unsigned long) hardfault_args[6]); stacked_psr = ((unsigned long) hardfault_args[7]); /* Inspect stacked_pc to locate the offending instruction. */ for( ;; ); } static void MemManage_Handler(void) { __asm volatile ( " tst lr, #4 \n" " ite eq \n" " mrseq r0, msp \n" " mrsne r0, psp \n" " ldr r1, [r0, #24] \n" " ldr r2, handler2_address_const \n" " bx r2 \n" " handler2_address_const: .word pop_registers_from_fault_stack \n" ); } static void BusFault_Handler(void) { __asm volatile ( " tst lr, #4 \n" " ite eq \n" " mrseq r0, msp \n" " mrsne r0, psp \n" " ldr r1, [r0, #24] \n" " ldr r2, handler3_address_const \n" " bx r2 \n" " handler3_address_const: .word pop_registers_from_fault_stack \n" ); } static void UsageFault_Handler(void) { __asm volatile ( " tst lr, #4 \n" " ite eq \n" " mrseq r0, msp \n" " mrsne r0, psp \n" " ldr r1, [r0, #24] \n" " ldr r2, handler4_address_const \n" " bx r2 \n" " handler4_address_const: .word pop_registers_from_fault_stack \n" ); } static void DebugMon_Handler(void) { while(1) { } } //***************************************************************************** // // Processor ends up here if an unexpected interrupt occurs or a handler // is not present in the application code. // //***************************************************************************** static void IntDefaultHandler(void) { // // Go into an infinite loop. // while(1) { } }
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