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| Original file line number | Diff line number | Diff line change |
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| /* Linker script to configure memory regions. */ | ||
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| MEMORY | ||
| { | ||
| FLASH (rx) : ORIGIN = 0x00018000, LENGTH = 0x28000 | ||
| RAM (rwx) : ORIGIN = 0x20002000, LENGTH = 0x2000 | ||
| } | ||
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| OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm") | ||
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| /* 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 | ||
| * __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) | ||
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| SECTIONS | ||
| { | ||
| .text : | ||
| { | ||
| KEEP(*(.Vectors)) | ||
| *(.text*) | ||
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| KEEP(*(.init)) | ||
| KEEP(*(.fini)) | ||
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| /* .ctors */ | ||
| *crtbegin.o(.ctors) | ||
| *crtbegin?.o(.ctors) | ||
| *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors) | ||
| *(SORT(.ctors.*)) | ||
| *(.ctors) | ||
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| /* .dtors */ | ||
| *crtbegin.o(.dtors) | ||
| *crtbegin?.o(.dtors) | ||
| *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors) | ||
| *(SORT(.dtors.*)) | ||
| *(.dtors) | ||
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| *(.rodata*) | ||
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| KEEP(*(.eh_frame*)) | ||
| } > FLASH | ||
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| .ARM.extab : | ||
| { | ||
| *(.ARM.extab* .gnu.linkonce.armextab.*) | ||
| } > FLASH | ||
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| __exidx_start = .; | ||
| .ARM.exidx : | ||
| { | ||
| *(.ARM.exidx* .gnu.linkonce.armexidx.*) | ||
| } > FLASH | ||
| __exidx_end = .; | ||
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| __etext = .; | ||
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| .data : AT (__etext) | ||
| { | ||
| __data_start__ = .; | ||
| *(vtable) | ||
| *(.data*) | ||
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| . = ALIGN(4); | ||
| /* preinit data */ | ||
| PROVIDE_HIDDEN (__preinit_array_start = .); | ||
| KEEP(*(.preinit_array)) | ||
| PROVIDE_HIDDEN (__preinit_array_end = .); | ||
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| . = ALIGN(4); | ||
| /* init data */ | ||
| PROVIDE_HIDDEN (__init_array_start = .); | ||
| KEEP(*(SORT(.init_array.*))) | ||
| KEEP(*(.init_array)) | ||
| PROVIDE_HIDDEN (__init_array_end = .); | ||
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| . = ALIGN(4); | ||
| /* finit data */ | ||
| PROVIDE_HIDDEN (__fini_array_start = .); | ||
| KEEP(*(SORT(.fini_array.*))) | ||
| KEEP(*(.fini_array)) | ||
| PROVIDE_HIDDEN (__fini_array_end = .); | ||
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| *(.jcr) | ||
| . = ALIGN(4); | ||
| /* All data end */ | ||
| __data_end__ = .; | ||
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| } > RAM | ||
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| .bss : | ||
| { | ||
| . = ALIGN(4); | ||
| __bss_start__ = .; | ||
| *(.bss*) | ||
| *(COMMON) | ||
| . = ALIGN(4); | ||
| __bss_end__ = .; | ||
| } > RAM | ||
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| .heap (COPY): | ||
| { | ||
| __end__ = .; | ||
| end = __end__; | ||
| *(.heap*) | ||
| __HeapLimit = .; | ||
| } > RAM | ||
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| /* .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 | ||
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| /* 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); | ||
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| /* Check if data + heap + stack exceeds RAM limit */ | ||
| ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack") | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,3 @@ | ||
| ## yotta Target Description using GCC to compile for Nordic nRF51822 16KB device. | ||
| ## yotta Target Description using GCC to compile for Nordic nRF51822 16K and 32K device. | ||
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| To choose RAM size use `"RAM_SIZE": "\"32k\""`. Default is set to 16K |