diff options
Diffstat (limited to 'Device/ldscripts/nucleo.ld')
| -rw-r--r-- | Device/ldscripts/nucleo.ld | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/Device/ldscripts/nucleo.ld b/Device/ldscripts/nucleo.ld new file mode 100644 index 0000000..33cfc2a --- /dev/null +++ b/Device/ldscripts/nucleo.ld @@ -0,0 +1,199 @@ +/* Linker script to configure memory regions. + * Need modifying for a specific board. + * FLASH.ORIGIN: starting address of flash + * FLASH.LENGTH: length of flash + * RAM.ORIGIN: starting address of RAM bank 0 + * RAM.LENGTH: length of RAM bank 0 + */ +MEMORY +{ + FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 512K + RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 96K +} + +/* Linker script to place sections and symbol values. Should be used together + * with other linker script that defines memory regions FLASH and RAM. + * It references following symbols, which must be defined in code: + * Reset_Handler : Entry of reset handler + * + * It defines following symbols, which code can use without definition: + * __exidx_start + * __exidx_end + * __copy_table_start__ + * __copy_table_end__ + * __zero_table_start__ + * __zero_table_end__ + * __etext + * __data_start__ + * __preinit_array_start + * __preinit_array_end + * __init_array_start + * __init_array_end + * __fini_array_start + * __fini_array_end + * __data_end__ + * __bss_start__ + * __bss_end__ + * __end__ + * end + * __HeapLimit + * __StackLimit + * __StackTop + * __stack + */ +ENTRY(Reset_Handler) + +_estack = 0x20017FFF; + +SECTIONS +{ + .text : + { + KEEP(*(.isr_vector)) + *(.text*) + + KEEP(*(.init)) + KEEP(*(.fini)) + + /* .ctors */ + *crtbegin.o(.ctors) + *crtbegin?.o(.ctors) + *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors) + *(SORT(.ctors.*)) + *(.ctors) + + /* .dtors */ + *crtbegin.o(.dtors) + *crtbegin?.o(.dtors) + *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors) + *(SORT(.dtors.*)) + *(.dtors) + + *(.rodata*) + + KEEP(*(.eh_frame*)) + } > FLASH + + .ARM.extab : + { + *(.ARM.extab* .gnu.linkonce.armextab.*) + } > FLASH + + __exidx_start = .; + .ARM.exidx : + { + *(.ARM.exidx* .gnu.linkonce.armexidx.*) + } > FLASH + __exidx_end = .; + + /* To copy multiple ROM to RAM sections, + * uncomment .copy.table section and, + * define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */ + /* + .copy.table : + { + . = ALIGN(4); + __copy_table_start__ = .; + LONG (__etext) + LONG (__data_start__) + LONG (__data_end__ - __data_start__) + LONG (__etext2) + LONG (__data2_start__) + LONG (__data2_end__ - __data2_start__) + __copy_table_end__ = .; + } > FLASH + */ + + /* To clear multiple BSS sections, + * uncomment .zero.table section and, + * define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */ + /* + .zero.table : + { + . = ALIGN(4); + __zero_table_start__ = .; + LONG (__bss_start__) + LONG (__bss_end__ - __bss_start__) + LONG (__bss2_start__) + LONG (__bss2_end__ - __bss2_start__) + __zero_table_end__ = .; + } > FLASH + */ + + __etext = .; + + .data : AT (__etext) + { + __data_start__ = .; + _sdata = __data_start__; + *(vtable) + *(.data*) + + . = ALIGN(4); + /* preinit data */ + PROVIDE_HIDDEN (__preinit_array_start = .); + KEEP(*(.preinit_array)) + PROVIDE_HIDDEN (__preinit_array_end = .); + + . = ALIGN(4); + /* init data */ + PROVIDE_HIDDEN (__init_array_start = .); + KEEP(*(SORT(.init_array.*))) + KEEP(*(.init_array)) + PROVIDE_HIDDEN (__init_array_end = .); + + + . = ALIGN(4); + /* finit data */ + PROVIDE_HIDDEN (__fini_array_start = .); + KEEP(*(SORT(.fini_array.*))) + KEEP(*(.fini_array)) + PROVIDE_HIDDEN (__fini_array_end = .); + + KEEP(*(.jcr*)) + . = ALIGN(4); + /* All data end */ + __data_end__ = .; + _edata = __data_end__; + + } > RAM + + _sidata = LOADADDR(.data); + + .bss : + { + . = ALIGN(4); + __bss_start__ = .; + _sbss = __bss_start__; + *(.bss*) + *(COMMON) + . = ALIGN(4); + __bss_end__ = .; + _ebss = __bss_end__; + } > RAM + + .heap (COPY): + { + __end__ = .; + PROVIDE(end = .); + *(.heap*) + __HeapLimit = .; + } > RAM + + /* .stack_dummy section doesn't contains any symbols. It is only + * used for linker to calculate size of stack sections, and assign + * values to stack symbols later */ + .stack_dummy (COPY): + { + *(.stack*) + } > RAM + + /* Set stack top to end of RAM, and stack limit move down by + * size of stack_dummy section */ + __StackTop = ORIGIN(RAM) + LENGTH(RAM); + __StackLimit = __StackTop - SIZEOF(.stack_dummy); + PROVIDE(__stack = __StackTop); + + /* Check if data + heap + stack exceeds RAM limit */ + ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack") +} |