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+/* Linker script to configure memory regions.
+ * Need modifying for a specific board.
+ * FLASH.ORIGIN: starting address of flash
+ * FLASH.LENGTH: length of flash
+ * RAM.ORIGIN: starting address of RAM bank 0
+ * RAM.LENGTH: length of RAM bank 0
+ */
+MEMORY
+{
+ FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 128K
+ RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
+}
+
+/* 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
+ * __copy_table_start__
+ * __copy_table_end__
+ * __zero_table_start__
+ * __zero_table_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)
+
+_estack = 0x2000FFFF;
+
+SECTIONS
+{
+ .text :
+ {
+ KEEP(*(.isr_vector))
+ *(.text*)
+
+ 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)
+
+ *(.rodata*)
+
+ KEEP(*(.eh_frame*))
+ } > FLASH
+
+ .ARM.extab :
+ {
+ *(.ARM.extab* .gnu.linkonce.armextab.*)
+ } > FLASH
+
+ __exidx_start = .;
+ .ARM.exidx :
+ {
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ } > FLASH
+ __exidx_end = .;
+
+ /* To copy multiple ROM to RAM sections,
+ * uncomment .copy.table section and,
+ * define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
+ /*
+ .copy.table :
+ {
+ . = ALIGN(4);
+ __copy_table_start__ = .;
+ LONG (__etext)
+ LONG (__data_start__)
+ LONG (__data_end__ - __data_start__)
+ LONG (__etext2)
+ LONG (__data2_start__)
+ LONG (__data2_end__ - __data2_start__)
+ __copy_table_end__ = .;
+ } > FLASH
+ */
+
+ /* To clear multiple BSS sections,
+ * uncomment .zero.table section and,
+ * define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
+ /*
+ .zero.table :
+ {
+ . = ALIGN(4);
+ __zero_table_start__ = .;
+ LONG (__bss_start__)
+ LONG (__bss_end__ - __bss_start__)
+ LONG (__bss2_start__)
+ LONG (__bss2_end__ - __bss2_start__)
+ __zero_table_end__ = .;
+ } > FLASH
+ */
+
+ __etext = .;
+
+ .data : AT (__etext)
+ {
+ __data_start__ = .;
+ _sdata = __data_start__;
+ *(vtable)
+ *(.data*)
+
+ . = 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 = .);
+
+ KEEP(*(.jcr*))
+ . = ALIGN(4);
+ /* All data end */
+ __data_end__ = .;
+ _edata = __data_end__;
+
+ } > RAM
+
+ _sidata = LOADADDR(.data);
+
+ .bss :
+ {
+ . = ALIGN(4);
+ __bss_start__ = .;
+ _sbss = __bss_start__;
+ *(.bss*)
+ *(COMMON)
+ . = ALIGN(4);
+ __bss_end__ = .;
+ _ebss = __bss_end__;
+ } > RAM
+
+ .heap (COPY):
+ {
+ __end__ = .;
+ PROVIDE(end = .);
+ *(.heap*)
+ __HeapLimit = .;
+ } > RAM
+
+ /* .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
+
+ /* 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);
+
+ /* Check if data + heap + stack exceeds RAM limit */
+ ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}