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MEMORY {
ROM (rx) : ORIGIN = 0x00000000, LENGTH = 0x00010000 /* 64 kB ROM */
FLASH (rx) : ORIGIN = 0x10000000, LENGTH = 0x00280000 /* 2.5 MB Flash */
SRAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00060000 /* 384 kB SRAM */
/*CSI2 (rwx) : ORIGIN = 0x2001F000, LENGTH = 0x00001000 4096 B CSI2 Buffer */
}
SECTIONS {
.rom :
{
KEEP(*(.rom_vector))
*(.rom_handlers*)
} > ROM
.text :
{
_text = .;
KEEP(*(.isr_vector))
EXCLUDE_FILE (*riscv.o) *(.text*) /* Program code (exclude RISCV code) */
*(.rodata*) /* read-only data: "const" */
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)
/* C++ Exception handling */
KEEP(*(.eh_frame*))
_etext = .;
} > FLASH
.ARM.extab :
{
*(.ARM.extab* .gnu.linkonce.armextab.*)
} > FLASH
/* Binary import */
.bin_storage :
{
FILL(0xFF)
_bin_start_ = .;
KEEP(*(.bin_storage_img))
_bin_end_ = .;
. = ALIGN(4);
} > FLASH
.rom_code :
{
. = ALIGN(16);
_sran_code = .;
*(.rom_code_section)
_esran_code = .;
} > ROM
.flash_code :
{
. = ALIGN(16);
_sran_code = .;
*(.flash_code_section)
_esran_code = .;
} > FLASH
.sram_code :
{
. = ALIGN(16);
_sran_code = .;
*(.sram_code_section)
_esran_code = .;
} > SRAM
/* it's used for C++ exception handling */
/* we need to keep this to avoid overlapping */
.ARM.exidx :
{
__exidx_start = .;
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
__exidx_end = .;
} > FLASH
.data :
{
_data = ALIGN(., 4);
_csi = . + 0x20000;
*(vtable)
*(.data*) /*read-write initialized data: initialized global variable*/
/* 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: uninitialized global variable*/
*(COMMON)
_ebss = ALIGN(., 4);
} > SRAM
.shared :
{
. = ALIGN(4);
_shared = .;
*(.mailbox*)
. = ALIGN(4);
*(.shared*) /*read-write zero initialized data: uninitialized global variable*/
_eshared = ALIGN(., 4);
} > SRAM
__shared_data = LOADADDR(.shared);
/* 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")
/* Section used by RISCV loader projects. See RISCV_LOAD documentation in the build system. */
.riscv_flash :
{
/* Align address to mod 256 with a small offset. This is required to match the flash page size.*/
. = ALIGN(256); /* ALIGN operatator is used here. Note that (. & 0x1FFFFF00) was used in the past, but a strange bug was seen on Windows where the & did not behave as expected.*/
. += 0x100;
_riscv_boot = .;
KEEP(*riscv.o (.text*))
} > FLASH
}
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