mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
Diff: targets/cmsis/TARGET_NXP/TARGET_LPC43XX/TOOLCHAIN_GCC_CR/startup_LPC43xx.cpp
- Revision:
- 256:76fd9a263045
- Parent:
- 67:78dfdb5b4d9e
--- a/targets/cmsis/TARGET_NXP/TARGET_LPC43XX/TOOLCHAIN_GCC_CR/startup_LPC43xx.cpp Fri Jul 11 10:00:08 2014 +0100 +++ b/targets/cmsis/TARGET_NXP/TARGET_LPC43XX/TOOLCHAIN_GCC_CR/startup_LPC43xx.cpp Tue Jul 15 07:45:08 2014 +0100 @@ -1,10 +1,10 @@ -// ***************************************************************************** -// +--+ -// | ++----+ -// +-++ | -// | | -// +-+--+ | -// | +--+--+ +//***************************************************************************** +// +--+ +// | ++----+ +// +-++ | +// | | +// +-+--+ | +// | +--+--+ // +----+ Copyright (c) 2011-12 Code Red Technologies Ltd. // // LPC43xx Microcontroller Startup code for use with Red Suite @@ -12,62 +12,58 @@ // Version : 120430 // // 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 +// 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. +// CODE RED TECHNOLOGIES LTD. // -// ***************************************************************************** -#if defined(__cplusplus) +//***************************************************************************** +#if defined (__cplusplus) #ifdef __REDLIB__ #error Redlib does not support C++ #else -// ***************************************************************************** +//***************************************************************************** // // The entry point for the C++ library startup // -// ***************************************************************************** +//***************************************************************************** extern "C" { -extern void __libc_init_array(void); - + extern void __libc_init_array(void); } #endif #endif #define WEAK __attribute__ ((weak)) -#define ALIAS(f) __attribute__ ((weak, alias(# f))) +#define ALIAS(f) __attribute__ ((weak, alias (#f))) -//#if defined (__USE_CMSIS) +// Code Red - if CMSIS is being used, then SystemInit() routine +// will be called by startup code rather than in application's main() +#if defined (__USE_CMSIS) #include "LPC43xx.h" -//#endif - -#if defined(OS_UCOS_III) -extern void OS_CPU_PendSVHandler(void); -extern void OS_CPU_SysTickHandler (void); #endif -// ***************************************************************************** -#if defined(__cplusplus) +//***************************************************************************** +#if defined (__cplusplus) extern "C" { #endif -// ***************************************************************************** +//***************************************************************************** // // Forward declaration of the default handlers. These are aliased. -// When the application defines a handler (with the same name), this will +// When the application defines a handler (with the same name), this will // automatically take precedence over these weak definitions // -// ***************************************************************************** -void ResetISR(void); +//***************************************************************************** + void ResetISR(void); WEAK void NMI_Handler(void); WEAK void HardFault_Handler(void); WEAK void MemManage_Handler(void); @@ -79,18 +75,19 @@ WEAK void SysTick_Handler(void); WEAK void IntDefaultHandler(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 +// defines a handler (with the same name), this will automatically take // precedence over these weak definitions // -// ***************************************************************************** +//***************************************************************************** void DAC_IRQHandler(void) ALIAS(IntDefaultHandler); -void MX_CORE_IRQHandler(void) ALIAS(IntDefaultHandler); +void M0CORE_IRQHandler(void) ALIAS(IntDefaultHandler); void DMA_IRQHandler(void) ALIAS(IntDefaultHandler); -void FLASHEEPROM_IRQHandler(void) ALIAS(IntDefaultHandler); +void EZH_IRQHandler(void) ALIAS(IntDefaultHandler); +void FLASH_EEPROM_IRQHandler(void) ALIAS(IntDefaultHandler); void ETH_IRQHandler(void) ALIAS(IntDefaultHandler); void SDIO_IRQHandler(void) ALIAS(IntDefaultHandler); void LCD_IRQHandler(void) ALIAS(IntDefaultHandler); @@ -105,8 +102,8 @@ void MCPWM_IRQHandler(void) ALIAS(IntDefaultHandler); void ADC0_IRQHandler(void) ALIAS(IntDefaultHandler); void I2C0_IRQHandler(void) ALIAS(IntDefaultHandler); +void SPI_IRQHandler (void) ALIAS(IntDefaultHandler); void I2C1_IRQHandler(void) ALIAS(IntDefaultHandler); -void SPI_IRQHandler (void) ALIAS(IntDefaultHandler); void ADC1_IRQHandler(void) ALIAS(IntDefaultHandler); void SSP0_IRQHandler(void) ALIAS(IntDefaultHandler); void SSP1_IRQHandler(void) ALIAS(IntDefaultHandler); @@ -130,157 +127,130 @@ void GINT1_IRQHandler(void) ALIAS(IntDefaultHandler); void EVRT_IRQHandler(void) ALIAS(IntDefaultHandler); void CAN1_IRQHandler(void) ALIAS(IntDefaultHandler); +void VADC_IRQHandler(void) ALIAS(IntDefaultHandler); void ATIMER_IRQHandler(void) ALIAS(IntDefaultHandler); void RTC_IRQHandler(void) ALIAS(IntDefaultHandler); void WDT_IRQHandler(void) ALIAS(IntDefaultHandler); +void M0s_IRQHandler(void) ALIAS(IntDefaultHandler); void CAN0_IRQHandler(void) ALIAS(IntDefaultHandler); void QEI_IRQHandler(void) ALIAS(IntDefaultHandler); -// ***************************************************************************** + +//***************************************************************************** // // The entry point for the application. // __main() is the entry point for Redlib based applications // main() is the entry point for Newlib based applications // -// ***************************************************************************** -#if defined(__REDLIB__) +//***************************************************************************** +#if defined (__REDLIB__) extern void __main(void); - #endif extern int main(void); - -// ***************************************************************************** +//***************************************************************************** // // External declaration for the pointer to the stack top from the Linker Script // -// ***************************************************************************** +//***************************************************************************** extern void _vStackTop(void); -// ***************************************************************************** -// -// Application can define Stack size (If not defined, default stack size will -// used -// -// ***************************************************************************** -#ifndef STACK_SIZE -#define STACK_SIZE (0x200) +//***************************************************************************** +#if defined (__cplusplus) +} // extern "C" #endif - -// ***************************************************************************** -// -// Application can define Heap size (If not defined, default Heap size will -// used -// -// ***************************************************************************** -#ifndef HEAP_SIZE -#define HEAP_SIZE (0x4000) -#endif - -unsigned int __vStack[STACK_SIZE / sizeof(unsigned int)] __attribute__((section("STACK,\"aw\",%nobits@"))); -unsigned int __vHeap[HEAP_SIZE / sizeof(unsigned int)] __attribute__((section("HEAP,\"aw\",%nobits@"))); - -// ***************************************************************************** -#if defined(__cplusplus) -} // extern "C" -#endif -// ***************************************************************************** +//***************************************************************************** // // The vector table. // This relies on the linker script to place at correct location in memory. // -// ***************************************************************************** -extern void(*const g_pfnVectors[]) (void); +//***************************************************************************** +extern void (* const g_pfnVectors[])(void); __attribute__ ((section(".isr_vector"))) -void(*const g_pfnVectors[]) (void) = { - // Core Level - CM4/CM3 - &_vStackTop, // The initial stack pointer - ResetISR, // 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 - SVC_Handler, // SVCall handler - DebugMon_Handler, // Debug monitor handler - 0, // Reserved -#if defined(OS_UCOS_III) - OS_CPU_PendSVHandler, // uCOS-III PendSV handler - OS_CPU_SysTickHandler, // uCOS-III SysTick handler -#else - PendSV_Handler, // The PendSV handler - SysTick_Handler, // The SysTick handler -#endif +void (* const g_pfnVectors[])(void) = { + // Core Level - CM4 + &_vStackTop, // The initial stack pointer + ResetISR, // 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 + SVC_Handler, // SVCall handler + DebugMon_Handler, // Debug monitor handler + 0, // Reserved + PendSV_Handler, // The PendSV handler + SysTick_Handler, // The SysTick handler - // Chip Level - LPC18xx/43xx - DAC_IRQHandler, // 16 D/A Converter - MX_CORE_IRQHandler, // 17 CortexM4/M0 (LPC43XX ONLY) - DMA_IRQHandler, // 18 General Purpose DMA - 0, // 19 Reserved - FLASHEEPROM_IRQHandler, // 20 ORed flash Bank A, flash Bank B, EEPROM interrupts - ETH_IRQHandler, // 21 Ethernet - SDIO_IRQHandler, // 22 SD/MMC - LCD_IRQHandler, // 23 LCD - USB0_IRQHandler, // 24 USB0 - USB1_IRQHandler, // 25 USB1 - SCT_IRQHandler, // 26 State Configurable Timer - RIT_IRQHandler, // 27 Repetitive Interrupt Timer - TIMER0_IRQHandler, // 28 Timer0 - TIMER1_IRQHandler, // 29 Timer 1 - TIMER2_IRQHandler, // 30 Timer 2 - TIMER3_IRQHandler, // 31 Timer 3 - MCPWM_IRQHandler, // 32 Motor Control PWM - ADC0_IRQHandler, // 33 A/D Converter 0 - I2C0_IRQHandler, // 34 I2C0 - I2C1_IRQHandler, // 35 I2C1 - SPI_IRQHandler, // 36 SPI (LPC43XX ONLY) - ADC1_IRQHandler, // 37 A/D Converter 1 - SSP0_IRQHandler, // 38 SSP0 - SSP1_IRQHandler, // 39 SSP1 - UART0_IRQHandler, // 40 UART0 - UART1_IRQHandler, // 41 UART1 - UART2_IRQHandler, // 42 UART2 - UART3_IRQHandler, // 43 USRT3 - I2S0_IRQHandler, // 44 I2S0 - I2S1_IRQHandler, // 45 I2S1 - SPIFI_IRQHandler, // 46 SPI Flash Interface - SGPIO_IRQHandler, // 47 SGPIO (LPC43XX ONLY) - GPIO0_IRQHandler, // 48 GPIO0 - GPIO1_IRQHandler, // 49 GPIO1 - GPIO2_IRQHandler, // 50 GPIO2 - GPIO3_IRQHandler, // 51 GPIO3 - GPIO4_IRQHandler, // 52 GPIO4 - GPIO5_IRQHandler, // 53 GPIO5 - GPIO6_IRQHandler, // 54 GPIO6 - GPIO7_IRQHandler, // 55 GPIO7 - GINT0_IRQHandler, // 56 GINT0 - GINT1_IRQHandler, // 57 GINT1 - EVRT_IRQHandler, // 58 Event Router - CAN1_IRQHandler, // 59 C_CAN1 - 0, // 60 Reserved - 0, // 61 Reserved - ATIMER_IRQHandler, // 62 ATIMER - RTC_IRQHandler, // 63 RTC - 0, // 64 Reserved - WDT_IRQHandler, // 65 WDT - 0, // 66 Reserved - CAN0_IRQHandler, // 67 C_CAN0 - QEI_IRQHandler, // 68 QEI -}; + // Chip Level - LPC43 + DAC_IRQHandler, // 16 + M0CORE_IRQHandler, // 17 + DMA_IRQHandler, // 18 + EZH_IRQHandler, // 19 + FLASH_EEPROM_IRQHandler, // 20 + ETH_IRQHandler, // 21 + SDIO_IRQHandler, // 22 + LCD_IRQHandler, // 23 + USB0_IRQHandler, // 24 + USB1_IRQHandler, // 25 + SCT_IRQHandler, // 26 + RIT_IRQHandler, // 27 + TIMER0_IRQHandler, // 28 + TIMER1_IRQHandler, // 29 + TIMER2_IRQHandler, // 30 + TIMER3_IRQHandler, // 31 + MCPWM_IRQHandler, // 32 + ADC0_IRQHandler, // 33 + I2C0_IRQHandler, // 34 + I2C1_IRQHandler, // 35 + SPI_IRQHandler, // 36 + ADC1_IRQHandler, // 37 + SSP0_IRQHandler, // 38 + SSP1_IRQHandler, // 39 + UART0_IRQHandler, // 40 + UART1_IRQHandler, // 41 + UART2_IRQHandler, // 42 + UART3_IRQHandler, // 43 + I2S0_IRQHandler, // 44 + I2S1_IRQHandler, // 45 + SPIFI_IRQHandler, // 46 + SGPIO_IRQHandler, // 47 + GPIO0_IRQHandler, // 48 + GPIO1_IRQHandler, // 49 + GPIO2_IRQHandler, // 50 + GPIO3_IRQHandler, // 51 + GPIO4_IRQHandler, // 52 + GPIO5_IRQHandler, // 53 + GPIO6_IRQHandler, // 54 + GPIO7_IRQHandler, // 55 + GINT0_IRQHandler, // 56 + GINT1_IRQHandler, // 57 + EVRT_IRQHandler, // 58 + CAN1_IRQHandler, // 59 + 0, // 60 + VADC_IRQHandler, // 61 + ATIMER_IRQHandler, // 62 + RTC_IRQHandler, // 63 + 0, // 64 + WDT_IRQHandler, // 65 + M0s_IRQHandler, // 66 + CAN0_IRQHandler, // 67 + QEI_IRQHandler, // 68 + }; -// ***************************************************************************** +//***************************************************************************** // Functions to carry out the initialization of RW and BSS data sections. These // are written as separate functions rather than being inlined within the // ResetISR() function in order to cope with MCUs with multiple banks of // memory. -// ***************************************************************************** +//***************************************************************************** __attribute__ ((section(".after_vectors"))) void data_init(unsigned int romstart, unsigned int start, unsigned int len) { - unsigned int *pulDest = (unsigned int *) start; - unsigned int *pulSrc = (unsigned int *) romstart; + unsigned int *pulDest = (unsigned int*) start; + unsigned int *pulSrc = (unsigned int*) romstart; unsigned int loop; for (loop = 0; loop < len; loop = loop + 4) *pulDest++ = *pulSrc++; @@ -288,49 +258,94 @@ __attribute__ ((section(".after_vectors"))) void bss_init(unsigned int start, unsigned int len) { - unsigned int *pulDest = (unsigned int *) start; + unsigned int *pulDest = (unsigned int*) start; unsigned int loop; for (loop = 0; loop < len; loop = loop + 4) *pulDest++ = 0; } -// ***************************************************************************** +//***************************************************************************** // The following symbols are constructs generated by the linker, indicating // the location of various points in the "Global Section Table". This table is // created by the linker via the Code Red managed linker script mechanism. It // contains the load address, execution address and length of each RW data // section and the execution and length of each BSS (zero initialized) section. -// ***************************************************************************** +//***************************************************************************** extern unsigned int __data_section_table; extern unsigned int __data_section_table_end; extern unsigned int __bss_section_table; extern unsigned int __bss_section_table_end; -// ***************************************************************************** +//***************************************************************************** // Reset entry point for your code. // Sets up a simple runtime environment and initializes the C/C++ // library. // -// ***************************************************************************** - -extern "C" void software_init_hook(void) __attribute__((weak)); - +//***************************************************************************** void ResetISR(void) { - // - // Copy the data sections from flash to SRAM. - // +// ************************************************************* +// The following conditional block of code manually resets as +// much of the peripheral set of the LPC43 as possible. This is +// done because the LPC43 does not provide a means of triggering +// a full system reset under debugger control, which can cause +// problems in certain circumstances when debugging. +// +// You can prevent this code block being included if you require +// (for example when creating a final executable which you will +// not debug) by setting the define 'DONT_RESET_ON_RESTART'. +// +#ifndef DONT_RESET_ON_RESTART + + // Disable interrupts + __asm volatile ("cpsid i"); + // equivalent to CMSIS '__disable_irq()' function + + unsigned int *RESET_CONTROL = (unsigned int *) 0x40053100; + // LPC_RGU->RESET_CTRL0 @ 0x40053100 + // LPC_RGU->RESET_CTRL1 @ 0x40053104 + // Note that we do not use the CMSIS register access mechanism, + // as there is no guarantee that the project has been configured + // to use CMSIS. + + // Write to LPC_RGU->RESET_CTRL0 + *(RESET_CONTROL+0) = 0x10DF0000; + // GPIO_RST|AES_RST|ETHERNET_RST|SDIO_RST|DMA_RST| + // USB1_RST|USB0_RST|LCD_RST + + // Write to LPC_RGU->RESET_CTRL1 + *(RESET_CONTROL+1) = 0x01DFF7FF; + // M0APP_RST|CAN0_RST|CAN1_RST|I2S_RST|SSP1_RST|SSP0_RST| + // I2C1_RST|I2C0_RST|UART3_RST|UART1_RST|UART1_RST|UART0_RST| + // DAC_RST|ADC1_RST|ADC0_RST|QEI_RST|MOTOCONPWM_RST|SCT_RST| + // RITIMER_RST|TIMER3_RST|TIMER2_RST|TIMER1_RST|TIMER0_RST + + // Clear all pending interrupts in the NVIC + volatile unsigned int *NVIC_ICPR = (unsigned int *) 0xE000E280; + unsigned int irqpendloop; + for (irqpendloop = 0; irqpendloop < 8; irqpendloop++) { + *(NVIC_ICPR+irqpendloop)= 0xFFFFFFFF; + } + + // Reenable interrupts + __asm volatile ("cpsie i"); + // equivalent to CMSIS '__enable_irq()' function + +#endif // ifndef DONT_RESET_ON_RESTART +// ************************************************************* + + + // + // Copy the data sections from flash to SRAM. + // unsigned int LoadAddr, ExeAddr, SectionLen; unsigned int *SectionTableAddr; - /* Call SystemInit() for clocking/memory setup prior to scatter load */ - SystemInit(); - // Load base address of Global Section Table SectionTableAddr = &__data_section_table; - // Copy the data sections from flash to SRAM. + // Copy the data sections from flash to SRAM. while (SectionTableAddr < &__data_section_table_end) { LoadAddr = *SectionTableAddr++; ExeAddr = *SectionTableAddr++; @@ -345,107 +360,141 @@ bss_init(ExeAddr, SectionLen); } - if (software_init_hook) // give control to the RTOS - software_init_hook(); // this will also call __libc_init_array - else { - #if defined(__cplusplus) - // - // Call C++ library initialisation - // - __libc_init_array(); - #endif +#if defined (__VFP_FP__) && !defined (__SOFTFP__) +/* + * Code to enable the Cortex-M4 FPU only included + * if appropriate build options have been selected. + * Code taken from Section 7.1, Cortex-M4 TRM (DDI0439C) + */ + // CPACR is located at address 0xE000ED88 + asm("LDR.W R0, =0xE000ED88"); + // Read CPACR + asm("LDR R1, [R0]"); + // Set bits 20-23 to enable CP10 and CP11 coprocessors + asm(" ORR R1, R1, #(0xF << 20)"); + // Write back the modified value to the CPACR + asm("STR R1, [R0]"); +#endif // (__VFP_FP__) && !(__SOFTFP__) + + // ****************************** + // Check to see if we are running the code from a non-zero + // address (eg RAM, external flash), in which case we need + // to modify the VTOR register to tell the CPU that the + // vector table is located at a non-0x0 address. - #if defined(__REDLIB__) - // Call the Redlib library, which in turn calls main() - __main(); - #else - main(); - #endif - } + // Note that we do not use the CMSIS register access mechanism, + // as there is no guarantee that the project has been configured + // to use CMSIS. + unsigned int * pSCB_VTOR = (unsigned int *) 0xE000ED08; + if ((unsigned int *)g_pfnVectors!=(unsigned int *) 0x00000000) { + // CMSIS : SCB->VTOR = <address of vector table> + *pSCB_VTOR = (unsigned int)g_pfnVectors; + } + +#ifdef __USE_CMSIS + SystemInit(); +#endif + +#if defined (__cplusplus) + // + // Call C++ library initialisation // - // main() shouldn't return, but if it does, we'll just enter an infinite loop + __libc_init_array(); +#endif + +#if defined (__REDLIB__) + // Call the Redlib library, which in turn calls main() + __main() ; +#else + main(); +#endif + // - while (1) {} + // main() shouldn't return, but if it does, we'll just enter an infinite loop + // + while (1) { + ; + } } -// ***************************************************************************** +//***************************************************************************** // Default exception handlers. Override the ones here by defining your own // handler routines in your application code. -// ***************************************************************************** +//***************************************************************************** __attribute__ ((section(".after_vectors"))) void NMI_Handler(void) { - while (1) {} + while(1) + { + } } - __attribute__ ((section(".after_vectors"))) void HardFault_Handler(void) { - while (1) {} + while(1) + { + } } - __attribute__ ((section(".after_vectors"))) void MemManage_Handler(void) { - while (1) {} + while(1) + { + } } - __attribute__ ((section(".after_vectors"))) void BusFault_Handler(void) { - while (1) {} + while(1) + { + } } - __attribute__ ((section(".after_vectors"))) void UsageFault_Handler(void) { - while (1) {} + while(1) + { + } } - __attribute__ ((section(".after_vectors"))) void SVC_Handler(void) { - while (1) {} + while(1) + { + } } - __attribute__ ((section(".after_vectors"))) void DebugMon_Handler(void) { - while (1) {} + while(1) + { + } } - __attribute__ ((section(".after_vectors"))) void PendSV_Handler(void) { - while (1) {} + while(1) + { + } } - __attribute__ ((section(".after_vectors"))) void SysTick_Handler(void) { - while (1) {} + while(1) + { + } } -// ***************************************************************************** +//***************************************************************************** // // Processor ends up here if an unexpected interrupt occurs or a specific // handler is not present in the application code. // -// ***************************************************************************** +//***************************************************************************** __attribute__ ((section(".after_vectors"))) void IntDefaultHandler(void) { - while (1) {} + while(1) + { + } } - -// ***************************************************************************** -// -// Heap overflow check function required by REDLib_V2 library -// -// ***************************************************************************** -extern unsigned int *_pvHeapStart; -unsigned int __check_heap_overflow (void * new_end_of_heap) -{ - return (new_end_of_heap >= (void *)&__vHeap[HEAP_SIZE/sizeof(unsigned int)]); -} -