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145 lines
2.9 KiB
145 lines
2.9 KiB
10 years ago
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/* Linker script to configure memory regions. */
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MEMORY
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{
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FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 1024K
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SRAM1 (xrw) : ORIGIN = 0x20000000, LENGTH = 112K
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SRAM2 (xrw) : ORIGIN = 0x2001C000, LENGTH = 16K
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CCMRAM (rw) : ORIGIN = 0x10000000, LENGTH = 64K
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}
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/* Library configurations */
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GROUP(libgcc.a libc.a libm.a libnosys.a)
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/* Linker script to place sections and symbol values. Should be used together
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* with other linker script that defines memory regions FLASH and RAM.
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* It references following symbols, which must be defined in code:
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* Reset_Handler : Entry of reset handler
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*
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* It defines following symbols, which code can use without definition:
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* __exidx_start
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* __exidx_end
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* __copy_table_start__
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* __copy_table_end__
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* __zero_table_start__
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* __zero_table_end__
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* __etext
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* __data_start__
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* __preinit_array_start
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* __preinit_array_end
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* __init_array_start
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* __init_array_end
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* __fini_array_start
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* __fini_array_end
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* __data_end__
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* __bss_start__
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* __bss_end__
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* __end__
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* end
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* __HeapLimit
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* __StackLimit
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* __StackTop
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* __stack
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* __Vectors_End
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* __Vectors_Size
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*/
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ENTRY(Reset_Handler)
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SECTIONS
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{
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.text :
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{
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KEEP(*(.vectors))
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__Vectors_End = .;
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__Vectors_Size = __Vectors_End - __Vectors;
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__end__ = .;
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*(.text*)
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KEEP(*(.init))
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KEEP(*(.fini))
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*(.rodata*)
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KEEP(*(.eh_frame*))
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} > FLASH
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__etext = .;
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.data : AT (__etext)
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{
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__data_start__ = .;
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*(vtable)
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*(.data*)
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/* All data end */
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__data_end__ = .;
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} > SRAM1
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.bss :
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{
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. = ALIGN(4);
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__bss_start__ = .;
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*(.bss*)
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*(COMMON)
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. = ALIGN(4);
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__bss_end__ = .;
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} > SRAM1
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.heap (COPY):
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{
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__HeapBase = .;
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__end__ = .;
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end = __end__;
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KEEP(*(.heap*))
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__HeapLimit = .;
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} > SRAM1
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/* .stack_dummy section doesn't contains any symbols. It is only
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* used for linker to calculate size of stack sections, and assign
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* values to stack symbols later */
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.stack_dummy (COPY):
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{
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KEEP(*(.stack*))
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} > SRAM1
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/* Set stack top to end of RAM, and stack limit move down by
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* size of stack_dummy section */
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__StackTop = ORIGIN(SRAM1) + LENGTH(SRAM1);
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__StackLimit = __StackTop - SIZEOF(.stack_dummy);
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PROVIDE(__stack = __StackTop);
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/* Check if data + heap + stack exceeds RAM limit */
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ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
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/* TODO: Place DMA buffers here.
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* SRAM1 and SRAM2 can be accessed simultaneously.
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* Startup file does not initialise this area. */
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.sram2 :
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{
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. = ALIGN(4);
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*(.sram2)
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*(.sram2*)
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. = ALIGN(4);
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} >SRAM2
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_siccmram = LOADADDR(.ccmram);
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/* CCM-RAM section
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* Use for stack and heap if SRAM1 & SRAM2 is full.
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*/
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.ccmram :
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{
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. = ALIGN(4);
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_sccmram = .;
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*(.ccmram)
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*(.ccmram*)
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. = ALIGN(4);
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_eccmram = .;
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} >CCMRAM /* AT> FLASH */
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}
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