/****************************************************************************//** * @file startup_Nano100Series.S * @version V1.00 * @brief CMSIS Cortex-M0 Core Device Startup File for Nano100 * * SPDX-License-Identifier: Apache-2.0 * @copyright (C) 2018 Nuvoton Technology Corp. All rights reserved. *****************************************************************************/ .syntax unified .arch armv6-m .section .stack .align 3 #ifdef __STACK_SIZE .equ Stack_Size, __STACK_SIZE #else .equ Stack_Size, 0x00000400 #endif .globl __StackTop .globl __StackLimit __StackLimit: .space Stack_Size .size __StackLimit, . - __StackLimit __StackTop: .size __StackTop, . - __StackTop .section .heap .align 3 #ifdef __HEAP_SIZE .equ Heap_Size, __HEAP_SIZE #else .equ Heap_Size, 0x00000100 #endif .globl __HeapBase .globl __HeapLimit __HeapBase: .if Heap_Size .space Heap_Size .endif .size __HeapBase, . - __HeapBase __HeapLimit: .size __HeapLimit, . - __HeapLimit .section .vectors .align 2 .globl __Vectors __Vectors: .long __StackTop /* Top of Stack */ .long Reset_Handler /* Reset Handler */ .long NMI_Handler /* NMI Handler */ .long HardFault_Handler /* Hard Fault Handler */ .long MemManage_Handler /* MPU Fault Handler */ .long BusFault_Handler /* Bus Fault Handler */ .long UsageFault_Handler /* Usage Fault Handler */ .long 0 /* Reserved */ .long 0 /* Reserved */ .long 0 /* Reserved */ .long 0 /* Reserved */ .long SVC_Handler /* SVCall Handler */ .long DebugMon_Handler /* Debug Monitor Handler */ .long 0 /* Reserved */ .long PendSV_Handler /* PendSV Handler */ .long SysTick_Handler /* SysTick Handler */ /* External interrupts */ .long BOD_IRQHandler /* 0: BOD */ .long WDT_IRQHandler /* 1: WDT */ .long EINT0_IRQHandler /* 2: EINT0 */ .long EINT1_IRQHandler /* 3: EINT1 */ .long GPABC_IRQHandler /* 4: GPABC */ .long GPDEF_IRQHandler /* 5: GPDEF */ .long PWM0_IRQHandler /* 6: PWM0 */ .long PWM1_IRQHandler /* 7: PWM1 */ .long TMR0_IRQHandler /* 8: TMR0 */ .long TMR1_IRQHandler /* 9: TMR1 */ .long TMR2_IRQHandler /* 10: TMR2 */ .long TMR3_IRQHandler /* 11: TMR3 */ .long UART0_IRQHandler /* 12: UART0 */ .long UART1_IRQHandler /* 13: UART1 */ .long SPI0_IRQHandler /* 14: SPI0 */ .long SPI1_IRQHandler /* 15: SPI1 */ .long SPI2_IRQHandler /* 16: SPI2 */ .long HIRC_IRQHandler /* 17: HIRC */ .long I2C0_IRQHandler /* 18: I2C0 */ .long I2C1_IRQHandler /* 19: I2C1 */ .long SC2_IRQHandler /* 20: SC2 */ .long SC0_IRQHandler /* 21: SC0 */ .long SC1_IRQHandler /* 22: SC1 */ .long USBD_IRQHandler /* 23: USBD */ .long 0 /* 24: Reserved */ .long LCD_IRQHandler /* 25: LCD */ .long PDMA_IRQHandler /* 26: PDMA */ .long I2S_IRQHandler /* 27: I2S */ .long PDWU_IRQHandler /* 28: PDWU */ .long ADC_IRQHandler /* 29: ADC */ .long DAC_IRQHandler /* 30: DAC */ .long RTC_IRQHandler /* 31: RTC */ .size __Vectors, . - __Vectors .text .thumb .thumb_func .align 2 .globl Reset_Handler .type Reset_Handler, %function Reset_Handler: /* Firstly it copies data from read only memory to RAM. There are two schemes * to copy. One can copy more than one sections. Another can only copy * one section. The former scheme needs more instructions and read-only * data to implement than the latter. * Macro __STARTUP_COPY_MULTIPLE is used to choose between two schemes. */ #ifdef __STARTUP_COPY_MULTIPLE /* Multiple sections scheme. * * Between symbol address __copy_table_start__ and __copy_table_end__, * there are array of triplets, each of which specify: * offset 0: LMA of start of a section to copy from * offset 4: VMA of start of a section to copy to * offset 8: size of the section to copy. Must be multiply of 4 * * All addresses must be aligned to 4 bytes boundary. */ ldr r4, =__copy_table_start__ ldr r5, =__copy_table_end__ .L_loop0: cmp r4, r5 bge .L_loop0_done ldr r1, [r4] ldr r2, [r4, #4] ldr r3, [r4, #8] .L_loop0_0: subs r3, #4 ittt ge ldrge r0, [r1, r3] strge r0, [r2, r3] bge .L_loop0_0 adds r4, #12 b .L_loop0 .L_loop0_done: #else /* Single section scheme. * * The ranges of copy from/to are specified by following symbols * __etext: LMA of start of the section to copy from. Usually end of text * __data_start__: VMA of start of the section to copy to * __data_end__: VMA of end of the section to copy to * * All addresses must be aligned to 4 bytes boundary. */ ldr r1, =__etext ldr r2, =__data_start__ ldr r3, =__data_end__ subs r3, r2 ble .L_loop1_done .L_loop1: subs r3, #4 ldr r0, [r1,r3] str r0, [r2,r3] bgt .L_loop1 .L_loop1_done: #endif /*__STARTUP_COPY_MULTIPLE */ /* This part of work usually is done in C library startup code. Otherwise, * define this macro to enable it in this startup. * * There are two schemes too. One can clear multiple BSS sections. Another * can only clear one section. The former is more size expensive than the * latter. * * Define macro __STARTUP_CLEAR_BSS_MULTIPLE to choose the former. * Otherwise efine macro __STARTUP_CLEAR_BSS to choose the later. */ #ifdef __STARTUP_CLEAR_BSS_MULTIPLE /* Multiple sections scheme. * * Between symbol address __copy_table_start__ and __copy_table_end__, * there are array of tuples specifying: * offset 0: Start of a BSS section * offset 4: Size of this BSS section. Must be multiply of 4 */ ldr r3, =__zero_table_start__ ldr r4, =__zero_table_end__ .L_loop2: cmp r3, r4 bge .L_loop2_done ldr r1, [r3] ldr r2, [r3, #4] movs r0, 0 .L_loop2_0: subs r2, #4 itt ge strge r0, [r1, r2] bge .L_loop2_0 adds r3, #8 b .L_loop2 .L_loop2_done: #elif defined (__STARTUP_CLEAR_BSS) /* Single BSS section scheme. * * The BSS section is specified by following symbols * __bss_start__: start of the BSS section. * __bss_end__: end of the BSS section. * * Both addresses must be aligned to 4 bytes boundary. */ ldr r1, =__bss_start__ ldr r2, =__bss_end__ movs r0, 0 .L_loop3: cmp r1, r2 itt lt strlt r0, [r1], #4 blt .L_loop3 #endif /* __STARTUP_CLEAR_BSS_MULTIPLE || __STARTUP_CLEAR_BSS */ /* Unlock Register */ ldr r0, =0x50000100 ldr r1, =0x59 str r1, [r0] ldr r1, =0x16 str r1, [r0] ldr r1, =0x88 str r1, [r0] /* Init POR */ ldr r0, =0x50000060 ldr r1, =0x00005AA5 str r1, [r0] /* Lock register */ ldr r0, =0x50000100 ldr r1, =0 str r1, [r0] #ifndef __START #define __START _start #endif bl __START .pool .size Reset_Handler, . - Reset_Handler .align 1 .thumb_func .weak Default_Handler .type Default_Handler, %function Default_Handler: b . .size Default_Handler, . - Default_Handler /* Macro to define default handlers. Default handler * will be weak symbol and just dead loops. They can be * overwritten by other handlers */ .macro def_irq_handler handler_name .weak \handler_name .set \handler_name, Default_Handler .endm def_irq_handler NMI_Handler def_irq_handler HardFault_Handler def_irq_handler MemManage_Handler def_irq_handler BusFault_Handler def_irq_handler UsageFault_Handler def_irq_handler SVC_Handler def_irq_handler DebugMon_Handler def_irq_handler PendSV_Handler def_irq_handler SysTick_Handler def_irq_handler BOD_IRQHandler def_irq_handler WDT_IRQHandler def_irq_handler EINT0_IRQHandler def_irq_handler EINT1_IRQHandler def_irq_handler GPABC_IRQHandler def_irq_handler GPDEF_IRQHandler def_irq_handler PWM0_IRQHandler def_irq_handler PWM1_IRQHandler def_irq_handler TMR0_IRQHandler def_irq_handler TMR1_IRQHandler def_irq_handler TMR2_IRQHandler def_irq_handler TMR3_IRQHandler def_irq_handler UART0_IRQHandler def_irq_handler UART1_IRQHandler def_irq_handler SPI0_IRQHandler def_irq_handler SPI1_IRQHandler def_irq_handler SPI2_IRQHandler def_irq_handler HIRC_IRQHandler def_irq_handler I2C0_IRQHandler def_irq_handler I2C1_IRQHandler def_irq_handler SC2_IRQHandler def_irq_handler SC0_IRQHandler def_irq_handler SC1_IRQHandler def_irq_handler USBD_IRQHandler def_irq_handler LCD_IRQHandler def_irq_handler PDMA_IRQHandler def_irq_handler I2S_IRQHandler def_irq_handler PDWU_IRQHandler def_irq_handler ADC_IRQHandler def_irq_handler DAC_IRQHandler def_irq_handler RTC_IRQHandler .end