From 47fb4c8b8803c5147e8f6c87d2206dadefc44b17 Mon Sep 17 00:00:00 2001 From: Pixel Date: Sun, 23 Jan 2011 17:23:32 -0800 Subject: Shuffling a few files around, and adding assembly file support. --- arch/arm/lpc17xx/ldscript | 210 +++++++++++++++++++++++++++++++++++++++ arch/arm/lpc17xx/startup.s | 243 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 453 insertions(+) create mode 100644 arch/arm/lpc17xx/ldscript create mode 100644 arch/arm/lpc17xx/startup.s (limited to 'arch/arm') diff --git a/arch/arm/lpc17xx/ldscript b/arch/arm/lpc17xx/ldscript new file mode 100644 index 0000000..f50b993 --- /dev/null +++ b/arch/arm/lpc17xx/ldscript @@ -0,0 +1,210 @@ +/* Linker script for Cortex-M3 + * + * Version:CodeSourcery Sourcery G++ Lite 2007q3-53 + * BugURL:https://support.codesourcery.com/GNUToolchain/ + * + * Copyright 2007 CodeSourcery. + * + * The authors hereby grant permission to use, copy, modify, distribute, + * and license this software and its documentation for any purpose, provided + * that existing copyright notices are retained in all copies and that this + * notice is included verbatim in any distributions. No written agreement, + * license, or royalty fee is required for any of the authorized uses. + * Modifications to this software may be copyrighted by their authors + * and need not follow the licensing terms described here, provided that + * the new terms are clearly indicated on the first page of each file where + * they apply. */ + +OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm") +/*ENTRY(_start)*/ +SEARCH_DIR(.) +GROUP(-lgcc -lc -lcs3 -lcs3unhosted -lcs3micro) + +MEMORY +{ + rom (rx) : ORIGIN = 0x00000000, LENGTH = 512K + ram (rwx) : ORIGIN = 0x10000000, LENGTH = 32K + + ram1(rwx) : ORIGIN = 0x2007C000, LENGTH = 16k + ram2(rwx) : ORIGIN = 0x20080000, LENGTH = 16k + ram3(rwx) : ORIGIN = 0x40038000, LENGTH = 2k +} + +/* These force the linker to search for particular symbols from + * the start of the link process and thus ensure the user's + * overrides are picked up + */ +EXTERN(__cs3_reset_cortex_m) +EXTERN(__cs3_interrupt_vector_cortex_m) +EXTERN(__cs3_start_c main __cs3_stack __cs3_stack_size __cs3_heap_end) + +PROVIDE(__cs3_stack = __cs3_region_start_ram + __cs3_region_size_ram); +PROVIDE(__cs3_stack_size = __cs3_region_start_ram + __cs3_region_size_ram - _end); +PROVIDE(__cs3_heap_start = _end); +PROVIDE(__cs3_heap_end = __cs3_region_start_ram + __cs3_region_size_ram); + +SECTIONS +{ + .text : + { + CREATE_OBJECT_SYMBOLS + __cs3_region_start_rom = .; + *(.cs3.region-head.rom) + __cs3_interrupt_vector = __cs3_interrupt_vector_cortex_m; + *(.cs3.interrupt_vector) + /* Make sure we pulled in an interrupt vector. */ + ASSERT (. != __cs3_interrupt_vector_cortex_m, "No interrupt vector"); + *(.rom) + *(.rom.b) + + __cs3_reset = __cs3_reset_cortex_m; + *(.cs3.reset) + /* Make sure we pulled in some reset code. */ + ASSERT (. != __cs3_reset, "No reset code"); + + *(.text .text.* .gnu.linkonce.t.*) + *(.plt) + *(.gnu.warning) + *(.glue_7t) *(.glue_7) *(.vfp11_veneer) + + *(.rodata .rodata.* .gnu.linkonce.r.*) + + *(.ARM.extab* .gnu.linkonce.armextab.*) + *(.gcc_except_table) + *(.eh_frame_hdr) + *(.eh_frame) + + . = ALIGN(4); + KEEP(*(.init)) + + . = ALIGN(4); + __preinit_array_start = .; + KEEP (*(.preinit_array)) + __preinit_array_end = .; + + . = ALIGN(4); + __init_array_start = .; + KEEP (*(SORT(.init_array.*))) + KEEP (*(.init_array)) + __init_array_end = .; + + . = ALIGN(0x4); + KEEP (*crtbegin.o(.ctors)) + KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) + KEEP (*(SORT(.ctors.*))) + KEEP (*crtend.o(.ctors)) + + . = ALIGN(4); + KEEP(*(.fini)) + + . = ALIGN(4); + __fini_array_start = .; + KEEP (*(.fini_array)) + KEEP (*(SORT(.fini_array.*))) + __fini_array_end = .; + + KEEP (*crtbegin.o(.dtors)) + KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) + KEEP (*(SORT(.dtors.*))) + KEEP (*crtend.o(.dtors)) + + . = ALIGN(4); + __cs3_regions = .; + LONG (0) + LONG (__cs3_region_init_ram) + LONG (__cs3_region_start_ram) + LONG (__cs3_region_init_size_ram) + LONG (__cs3_region_zero_size_ram) + } + + /* .ARM.exidx is sorted, so has to go in its own output section. */ + __exidx_start = .; + .ARM.exidx : + { + *(.ARM.exidx* .gnu.linkonce.armexidx.*) + } >rom + __exidx_end = .; + .text.align : + { + . = ALIGN(8); + _etext = .; + } >rom + __cs3_region_size_rom = LENGTH(rom); + __cs3_region_num = 1; + + .data : + { + __cs3_region_start_ram = .; + *(.cs3.region-head.ram) + KEEP(*(.jcr)) + *(.got.plt) *(.got) + *(.shdata) + *(.data .data.* .gnu.linkonce.d.*) + *(.ram) + . = ALIGN (8); + _edata = .; + } >ram AT>rom + .bss : + { + *(.shbss) + *(.bss .bss.* .gnu.linkonce.b.*) + *(COMMON) + *(.ram.b) + . = ALIGN (8); + _end = .; + __end = .; + } >ram AT>rom + /* This used for USB RAM section */ + .usb_ram (NOLOAD): + { + *.o (USB_RAM) + } > ram2 + .heap (NOLOAD) : + { + *(.heap) + } >ram + .stack (__cs3_stack - __cs3_stack_size) (NOLOAD): + { + *(.stack) + _estack = .; + PROVIDE(estack = .); + } >ram + + __cs3_region_init_ram = LOADADDR (.data); + __cs3_region_init_size_ram = _edata - __cs3_region_start_ram; + __cs3_region_zero_size_ram = _end - _edata; + __cs3_region_size_ram = LENGTH(ram); + __cs3_region_num = 1; + + .stab 0 (NOLOAD) : { *(.stab) } + .stabstr 0 (NOLOAD) : { *(.stabstr) } + /* DWARF debug sections. + * Symbols in the DWARF debugging sections are relative to the beginning + * of the section so we begin them at 0. */ + /* DWARF 1 */ + .debug 0 : { *(.debug) } + .line 0 : { *(.line) } + /* GNU DWARF 1 extensions */ + .debug_srcinfo 0 : { *(.debug_srcinfo) } + .debug_sfnames 0 : { *(.debug_sfnames) } + /* DWARF 1.1 and DWARF 2 */ + .debug_aranges 0 : { *(.debug_aranges) } + .debug_pubnames 0 : { *(.debug_pubnames) } + /* DWARF 2 */ + .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) } + .debug_abbrev 0 : { *(.debug_abbrev) } + .debug_line 0 : { *(.debug_line) } + .debug_frame 0 : { *(.debug_frame) } + .debug_str 0 : { *(.debug_str) } + .debug_loc 0 : { *(.debug_loc) } + .debug_macinfo 0 : { *(.debug_macinfo) } + /* SGI/MIPS DWARF 2 extensions */ + .debug_weaknames 0 : { *(.debug_weaknames) } + .debug_funcnames 0 : { *(.debug_funcnames) } + .debug_typenames 0 : { *(.debug_typenames) } + .debug_varnames 0 : { *(.debug_varnames) } + + .note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) } + .ARM.attributes 0 : { KEEP (*(.ARM.attributes)) } + /DISCARD/ : { *(.note.GNU-stack) } +} diff --git a/arch/arm/lpc17xx/startup.s b/arch/arm/lpc17xx/startup.s new file mode 100644 index 0000000..b195a18 --- /dev/null +++ b/arch/arm/lpc17xx/startup.s @@ -0,0 +1,243 @@ +/*****************************************************************************/ +/* startup_LPC17xx.s: Startup file for LPC17xx device series */ +/*****************************************************************************/ +/* Version: CodeSourcery Sourcery G++ Lite (with CS3) */ +/*****************************************************************************/ + + +/* +//*** <<< Use Configuration Wizard in Context Menu >>> *** +*/ + + +/* +// Stack Configuration +// Stack Size (in Bytes) <0x0-0xFFFFFFFF:8> +// +*/ + + .equ Stack_Size, 0x00000100 + .section ".stack", "w" + .align 3 + .globl __cs3_stack_mem + .globl __cs3_stack_size +__cs3_stack_mem: + .if Stack_Size + .space Stack_Size + .endif + .size __cs3_stack_mem, . - __cs3_stack_mem + .set __cs3_stack_size, . - __cs3_stack_mem + + +/* +// Heap Configuration +// Heap Size (in Bytes) <0x0-0xFFFFFFFF:8> +// +*/ + + .equ Heap_Size, 0x00001000 + + .section ".heap", "w" + .align 3 + .globl __cs3_heap_start + .globl __cs3_heap_end +__cs3_heap_start: + .if Heap_Size + .space Heap_Size + .endif +__cs3_heap_end: + + +/* Vector Table */ + + .section ".cs3.interrupt_vector" + .globl __cs3_interrupt_vector_cortex_m + .type __cs3_interrupt_vector_cortex_m, %object + +__cs3_interrupt_vector_cortex_m: + .long __cs3_stack /* Top of Stack */ + .long __cs3_reset /* 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 WDT_IRQHandler /* 16: Watchdog Timer */ + .long TIMER0_IRQHandler /* 17: Timer0 */ + .long TIMER1_IRQHandler /* 18: Timer1 */ + .long TIMER2_IRQHandler /* 19: Timer2 */ + .long TIMER3_IRQHandler /* 20: Timer3 */ + .long UART0_IRQHandler /* 21: UART0 */ + .long UART1_IRQHandler /* 22: UART1 */ + .long UART2_IRQHandler /* 23: UART2 */ + .long UART3_IRQHandler /* 24: UART3 */ + .long PWM1_IRQHandler /* 25: PWM1 */ + .long I2C0_IRQHandler /* 26: I2C0 */ + .long I2C1_IRQHandler /* 27: I2C1 */ + .long I2C2_IRQHandler /* 28: I2C2 */ + .long SPI_IRQHandler /* 29: SPI */ + .long SSP0_IRQHandler /* 30: SSP0 */ + .long SSP1_IRQHandler /* 31: SSP1 */ + .long PLL0_IRQHandler /* 32: PLL0 Lock (Main PLL) */ + .long RTC_IRQHandler /* 33: Real Time Clock */ + .long EINT0_IRQHandler /* 34: External Interrupt 0 */ + .long EINT1_IRQHandler /* 35: External Interrupt 1 */ + .long EINT2_IRQHandler /* 36: External Interrupt 2 */ + .long EINT3_IRQHandler /* 37: External Interrupt 3 */ + .long ADC_IRQHandler /* 38: A/D Converter */ + .long BOD_IRQHandler /* 39: Brown-Out Detect */ + .long USB_IRQHandler /* 40: USB */ + .long CAN_IRQHandler /* 41: CAN */ + .long DMA_IRQHandler /* 42: General Purpose DMA */ + .long I2S_IRQHandler /* 43: I2S */ + .long ENET_IRQHandler /* 44: Ethernet */ + .long RIT_IRQHandler /* 45: Repetitive Interrupt Timer */ + .long MCPWM_IRQHandler /* 46: Motor Control PWM */ + .long QEI_IRQHandler /* 47: Quadrature Encoder Interface */ + .long PLL1_IRQHandler /* 48: PLL1 Lock (USB PLL) */ + .long USBActivity_IRQHandler /* 49: USB Activity */ + .long CANActivity_IRQHandler /* 50: CAN Activity */ + + .size __cs3_interrupt_vector_cortex_m, . - __cs3_interrupt_vector_cortex_m + + + .thumb + + +/* Reset Handler */ + + .section .cs3.reset,"x",%progbits + .thumb_func + .globl __cs3_reset_cortex_m + .type __cs3_reset_cortex_m, %function +__cs3_reset_cortex_m: + .fnstart + LDR R0, =SystemInit + BLX R0 + LDR R0,=_start + BX R0 + .pool + .cantunwind + .fnend + .size __cs3_reset_cortex_m,.-__cs3_reset_cortex_m + + .section ".text" + +/* Exception Handlers */ + + .weak NMI_Handler + .type NMI_Handler, %function +NMI_Handler: + B . + .size NMI_Handler, . - NMI_Handler + + .weak HardFault_Handler + .type HardFault_Handler, %function +HardFault_Handler: + B . + .size HardFault_Handler, . - HardFault_Handler + + .weak MemManage_Handler + .type MemManage_Handler, %function +MemManage_Handler: + B . + .size MemManage_Handler, . - MemManage_Handler + + .weak BusFault_Handler + .type BusFault_Handler, %function +BusFault_Handler: + B . + .size BusFault_Handler, . - BusFault_Handler + + .weak UsageFault_Handler + .type UsageFault_Handler, %function +UsageFault_Handler: + B . + .size UsageFault_Handler, . - UsageFault_Handler + + .weak SVC_Handler + .type SVC_Handler, %function +SVC_Handler: + B . + .size SVC_Handler, . - SVC_Handler + + .weak DebugMon_Handler + .type DebugMon_Handler, %function +DebugMon_Handler: + B . + .size DebugMon_Handler, . - DebugMon_Handler + + .weak PendSV_Handler + .type PendSV_Handler, %function +PendSV_Handler: + B . + .size PendSV_Handler, . - PendSV_Handler + + .weak SysTick_Handler + .type SysTick_Handler, %function +SysTick_Handler: + B . + .size SysTick_Handler, . - SysTick_Handler + + +/* IRQ Handlers */ + + .globl Default_Handler + .type Default_Handler, %function +Default_Handler: + B . + .size Default_Handler, . - Default_Handler + + .macro IRQ handler + .weak \handler + .set \handler, Default_Handler + .endm + + IRQ WDT_IRQHandler + IRQ TIMER0_IRQHandler + IRQ TIMER1_IRQHandler + IRQ TIMER2_IRQHandler + IRQ TIMER3_IRQHandler + IRQ UART0_IRQHandler + IRQ UART1_IRQHandler + IRQ UART2_IRQHandler + IRQ UART3_IRQHandler + IRQ PWM1_IRQHandler + IRQ I2C0_IRQHandler + IRQ I2C1_IRQHandler + IRQ I2C2_IRQHandler + IRQ SPI_IRQHandler + IRQ SSP0_IRQHandler + IRQ SSP1_IRQHandler + IRQ PLL0_IRQHandler + IRQ RTC_IRQHandler + IRQ EINT0_IRQHandler + IRQ EINT1_IRQHandler + IRQ EINT2_IRQHandler + IRQ EINT3_IRQHandler + IRQ ADC_IRQHandler + IRQ BOD_IRQHandler + IRQ USB_IRQHandler + IRQ CAN_IRQHandler + IRQ DMA_IRQHandler + IRQ I2S_IRQHandler + IRQ ENET_IRQHandler + IRQ RIT_IRQHandler + IRQ MCPWM_IRQHandler + IRQ QEI_IRQHandler + IRQ PLL1_IRQHandler + IRQ USBActivity_IRQHandler + IRQ CANActivity_IRQHandler + + .end -- cgit v1.2.3