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MEMORY {
HEADER (rx): ORIGIN = 0x10000000, LENGTH = 0x200
FLASH (rx) : ORIGIN = 0x10000200, LENGTH = 0x002FFE00 /* 3MB flash */
SRAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00100000 /* 1MB SRAM */
}
/* Added Oct 9, 2018 to go to correct reset vector. */
ENTRY(Reset_Handler)
PROVIDE( _start_SWAP = (((Reset_Handler) >> 24) | (((Reset_Handler) & 0x00FF0000) >> 8) | (((Reset_Handler) & 0x0000FF00) << 8) | ((Reset_Handler) << 24)));
PROVIDE_HIDDEN( _SLA_Size = _endimage - __end_header );
PROVIDE( _SLA_Size_SWAP = (((_SLA_Size) >> 24) | (((_SLA_Size) & 0x00FF0000) >> 8) | (((_SLA_Size) & 0x0000FF00) << 8) | ((_SLA_Size) << 24)));
/* Sections Definitions */
SECTIONS {
.sb_sla_header : ALIGN(4)
{
FILL(0xFF)
KEEP(*(.sb_sla_header)) /* Header for ROM code */
__end_header = . ;
. = ALIGN(512);
} > HEADER
.text :
{
_text = .;
KEEP(*(.isr_vector))
*(.text*) /* program code */
*(.rodata*) /* read-only data: "const" */
KEEP(*(.init))
KEEP(*(.fini))
/* C++ Exception handling */
KEEP(*(.eh_frame*))
_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 */
*(.flashprog*) /* Flash program */
/* 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);
_enddata = LOADADDR(.data)+SIZEOF(.data);
.sb_sla_trailer : AT(_enddata)
{
KEEP(*(.sb_sla_trailer))
/* Align image with 16 byte boundary to conform to flash encryption block size. */
FILL(0xDEADC0DE);
/* NOTE: The FILL and ALIGN will not work unless something is written to the section. So, we use LONG. */
LONG(0xDEADC0DE);
. = ALIGN(16);
} > FLASH
_endimage = LOADADDR(.sb_sla_trailer)+SIZEOF(.sb_sla_trailer);
.sig :
{
KEEP(*(.sig))
LONG(0xDEADBEEF);
} > FLASH
.bss :
{
. = ALIGN(4);
_bss = .;
*(.bss*) /*read-write zero initialized data: uninitialized 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);
PROVIDE ( end = . );
PROVIDE ( _end = . );
*(.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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