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/* Linker script to configure memory regions. */
MEMORY {
FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 256K
SRAM (rwx) : ORIGIN = 0x20000000, LENGTH = 96K
}
SECTIONS {
.text :
{
_text = .;
KEEP(*(.isr_vector))
*(.text*) /* program code */
*(.rodata*) /* read-only data: "const" */
KEEP(*(.init))
KEEP(*(.fini))
/* C++ Exception handling */
KEEP(*(.eh_frame*))
/* section information for finsh shell */
. = ALIGN(4);
__fsymtab_start = .;
KEEP(*(FSymTab))
__fsymtab_end = .;
. = ALIGN(4);
__vsymtab_start = .;
KEEP(*(VSymTab))
__vsymtab_end = .;
/* section information for initial. */
. = ALIGN(4);
__rt_init_start = .;
KEEP(*(SORT(.rti_fn*)))
__rt_init_end = .;
. = ALIGN(4);
PROVIDE(__ctors_start__ = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
PROVIDE(__ctors_end__ = .);
. = ALIGN(4);
_etext = .;
} > FLASH
/* it's used for C++ exception handling */
/* we need to keep this to avoid overlapping */
.ARM.exidx :
{
__exidx_start = .;
*(.ARM.exidx*)
__exidx_end = .;
} > FLASH
.data :
{
_data = ALIGN(., 4);
*(.data*) /*read-write initialized data: initialized global variable*/
*(.spix_config*) /* SPIX configuration functions need to be run from SRAM */
/* These array sections are used by __libc_init_array to call static C++ constructors */
. = 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 = .);
_edata = ALIGN(., 4);
} > SRAM AT>FLASH
__load_data = LOADADDR(.data);
.bss :
{
. = ALIGN(4);
_bss = .;
*(.bss*) /*read-write zero initialized data: uninitialzed global variable*/
*(COMMON)
_ebss = ALIGN(., 4);
} > SRAM
/* Set stack top to end of RAM, and stack limit move down by
* size of stack_dummy section */
__StackTop = ORIGIN(SRAM) + LENGTH(SRAM);
__StackLimit = __StackTop - SIZEOF(.stack_dummy);
/* .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*)
} > SRAM
.heap (COPY):
{
. = ALIGN(4);
*(.heap*)
__HeapLimit = ABSOLUTE(__StackLimit);
} > SRAM
PROVIDE(__stack = __StackTop);
/* Check if data + heap + stack exceeds RAM limit */
ASSERT(__StackLimit >= _ebss, "region RAM overflowed with stack")
}
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