1/*******************************************************************************
2 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included
12 * in all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Except as contained in this notice, the name of Maxim Integrated
23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
24 * Products, Inc. Branding Policy.
25 *
26 * The mere transfer of this software does not imply any licenses
27 * of trade secrets, proprietary technology, copyrights, patents,
28 * trademarks, maskwork rights, or any other form of intellectual
29 * property whatsoever. Maxim Integrated Products, Inc. retains all
30 * ownership rights.
31 *
32 * $Date: 2018-12-18 15:37:22 -0600 (Tue, 18 Dec 2018) $
33 * $Revision: 40072 $
34 *
35 ******************************************************************************/
36
37MEMORY {
38    FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 256K
39    SRAM (rwx) : ORIGIN = 0x20000000, LENGTH = 96K
40}
41
42SECTIONS {
43    .text :
44    {
45        _text = .;
46        KEEP(*(.isr_vector))
47        *(.text*)    /* program code */
48        *(.rodata*)  /* read-only data: "const" */
49
50        KEEP(*(.init))
51        KEEP(*(.fini))
52
53        /* C++ Exception handling */
54        KEEP(*(.eh_frame*))
55        _etext = .;
56    } > FLASH
57
58    /* it's used for C++ exception handling      */
59    /* we need to keep this to avoid overlapping */
60    .ARM.exidx :
61    {
62        __exidx_start = .;
63        *(.ARM.exidx*)
64        __exidx_end = .;
65    } > FLASH
66
67    .data :
68    {
69        _data = ALIGN(., 4);
70        *(.data*)           /*read-write initialized data: initialized global variable*/
71        *(.spix_config*)    /* SPIX configuration functions need to be run from SRAM */
72
73        /* These array sections are used by __libc_init_array to call static C++ constructors */
74        . = ALIGN(4);
75        /* preinit data */
76        PROVIDE_HIDDEN (__preinit_array_start = .);
77        KEEP(*(.preinit_array))
78        PROVIDE_HIDDEN (__preinit_array_end = .);
79
80        . = ALIGN(4);
81        /* init data */
82        PROVIDE_HIDDEN (__init_array_start = .);
83        KEEP(*(SORT(.init_array.*)))
84        KEEP(*(.init_array))
85        PROVIDE_HIDDEN (__init_array_end = .);
86
87        . = ALIGN(4);
88        /* finit data */
89        PROVIDE_HIDDEN (__fini_array_start = .);
90        KEEP(*(SORT(.fini_array.*)))
91        KEEP(*(.fini_array))
92        PROVIDE_HIDDEN (__fini_array_end = .);
93
94        _edata = ALIGN(., 4);
95    } > SRAM AT>FLASH
96    __load_data = LOADADDR(.data);
97
98    .bss :
99    {
100        . = ALIGN(4);
101        _bss = .;
102        *(.bss*)     /*read-write zero initialized data: uninitialzed global variable*/
103        *(COMMON)
104        _ebss = ALIGN(., 4);
105    } > SRAM
106
107    /* Set stack top to end of RAM, and stack limit move down by
108     * size of stack_dummy section */
109    __StackTop = ORIGIN(SRAM) + LENGTH(SRAM);
110    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
111
112    /* .stack_dummy section doesn't contains any symbols. It is only
113     * used for linker to calculate size of stack sections, and assign
114     * values to stack symbols later */
115    .stack_dummy (COPY):
116    {
117        *(.stack*)
118    } > SRAM
119
120    .heap (COPY):
121    {
122        . = ALIGN(4);
123        *(.heap*)
124        __HeapLimit = ABSOLUTE(__StackLimit);
125    } > SRAM
126
127    PROVIDE(__stack = __StackTop);
128
129    /* Check if data + heap + stack exceeds RAM limit */
130    ASSERT(__StackLimit >= _ebss, "region RAM overflowed with stack")
131}
132