1/*
2** ###################################################################
3**     Processor:           LPC54018J4MET180
4**     Compiler:            GNU C Compiler
5**     Reference manual:    LPC54018JxM/LPC54S018JxM User manual Rev.1.0 20 September 2018
6**     Version:             rev. 1.2, 2017-06-08
7**     Build:               b200611
8**
9**     Abstract:
10**         Linker file for the GNU C Compiler
11**
12**     Copyright 2016 Freescale Semiconductor, Inc.
13**     Copyright 2016-2020 NXP
14**     All rights reserved.
15**
16**     SPDX-License-Identifier: BSD-3-Clause
17**
18**     http:                 www.nxp.com
19**     mail:                 support@nxp.com
20**
21** ###################################################################
22*/
23
24
25
26/* Entry Point */
27ENTRY(Reset_Handler)
28
29HEAP_SIZE  = DEFINED(__heap_size__)  ? __heap_size__  : 0x0400;
30STACK_SIZE = DEFINED(__stack_size__) ? __stack_size__ : 0x0800;
31
32/* Specify the memory areas */
33MEMORY
34{
35  m_interrupts          (RX)  : ORIGIN = 0x00000000, LENGTH = 0x00000200
36  m_text                (RX)  : ORIGIN = 0x00000200, LENGTH = 0x0002FE00
37  m_data                (RW)  : ORIGIN = 0x20000000, LENGTH = 0x00028000
38  m_usb_sram            (RW)  : ORIGIN = 0x40100000, LENGTH = 0x00002000
39}
40
41/* Define output sections */
42SECTIONS
43{
44  /* The startup code goes first into internal flash */
45  .interrupts :
46  {
47    . = ALIGN(4);
48    KEEP(*(.isr_vector))     /* Startup code */
49    . = ALIGN(4);
50  } > m_interrupts
51
52  /* The program code and other data goes into internal flash */
53  .text :
54  {
55    . = ALIGN(4);
56    *(.text)                 /* .text sections (code) */
57    *(.text*)                /* .text* sections (code) */
58    *(.rodata)               /* .rodata sections (constants, strings, etc.) */
59    *(.rodata*)              /* .rodata* sections (constants, strings, etc.) */
60    *(.glue_7)               /* glue arm to thumb code */
61    *(.glue_7t)              /* glue thumb to arm code */
62    *(.eh_frame)
63    KEEP (*(.init))
64    KEEP (*(.fini))
65    . = ALIGN(4);
66  } > m_text
67
68  .ARM.extab :
69  {
70    *(.ARM.extab* .gnu.linkonce.armextab.*)
71  } > m_text
72
73  .ARM :
74  {
75    __exidx_start = .;
76    *(.ARM.exidx*)
77    __exidx_end = .;
78  } > m_text
79
80 .ctors :
81  {
82    __CTOR_LIST__ = .;
83    /* gcc uses crtbegin.o to find the start of
84       the constructors, so we make sure it is
85       first.  Because this is a wildcard, it
86       doesn't matter if the user does not
87       actually link against crtbegin.o; the
88       linker won't look for a file to match a
89       wildcard.  The wildcard also means that it
90       doesn't matter which directory crtbegin.o
91       is in.  */
92    KEEP (*crtbegin.o(.ctors))
93    KEEP (*crtbegin?.o(.ctors))
94    /* We don't want to include the .ctor section from
95       from the crtend.o file until after the sorted ctors.
96       The .ctor section from the crtend file contains the
97       end of ctors marker and it must be last */
98    KEEP (*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors))
99    KEEP (*(SORT(.ctors.*)))
100    KEEP (*(.ctors))
101    __CTOR_END__ = .;
102  } > m_text
103
104  .dtors :
105  {
106    __DTOR_LIST__ = .;
107    KEEP (*crtbegin.o(.dtors))
108    KEEP (*crtbegin?.o(.dtors))
109    KEEP (*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors))
110    KEEP (*(SORT(.dtors.*)))
111    KEEP (*(.dtors))
112    __DTOR_END__ = .;
113  } > m_text
114
115  .preinit_array :
116  {
117    PROVIDE_HIDDEN (__preinit_array_start = .);
118    KEEP (*(.preinit_array*))
119    PROVIDE_HIDDEN (__preinit_array_end = .);
120  } > m_text
121
122  .init_array :
123  {
124    PROVIDE_HIDDEN (__init_array_start = .);
125    KEEP (*(SORT(.init_array.*)))
126    KEEP (*(.init_array*))
127    PROVIDE_HIDDEN (__init_array_end = .);
128  } > m_text
129
130  .fini_array :
131  {
132    PROVIDE_HIDDEN (__fini_array_start = .);
133    KEEP (*(SORT(.fini_array.*)))
134    KEEP (*(.fini_array*))
135    PROVIDE_HIDDEN (__fini_array_end = .);
136  } > m_text
137
138  __etext = .;    /* define a global symbol at end of code */
139  __DATA_ROM = .; /* Symbol is used by startup for data initialization */
140
141  .data : AT(__DATA_ROM)
142  {
143    . = ALIGN(4);
144    __DATA_RAM = .;
145    __data_start__ = .;      /* create a global symbol at data start */
146    *(.ramfunc*)             /* for functions in ram */
147    *(.data)                 /* .data sections */
148    *(.data*)                /* .data* sections */
149    KEEP(*(.jcr*))
150    . = ALIGN(4);
151    __data_end__ = .;        /* define a global symbol at data end */
152  } > m_data
153
154  __DATA_END = __DATA_ROM + (__data_end__ - __data_start__);
155  __IMAGE_START = LOADADDR(.interrupts);
156  __IMAGE_END = LOADADDR(.data) + SIZEOF(.data);
157  __IMAGE_SIZE = __IMAGE_END - __IMAGE_START;
158  text_end = ORIGIN(m_text) + LENGTH(m_text);
159  ASSERT(__DATA_END <= text_end, "region m_text overflowed with text and data")
160
161  /* Uninitialized data section */
162  .bss :
163  {
164    /* This is used by the startup in order to initialize the .bss section */
165    . = ALIGN(4);
166    __START_BSS = .;
167    __bss_start__ = .;
168    *(.bss)
169    *(.bss*)
170    *(COMMON)
171    . = ALIGN(4);
172    __bss_end__ = .;
173    __END_BSS = .;
174  } > m_data
175
176  .heap :
177  {
178    . = ALIGN(8);
179    __end__ = .;
180    PROVIDE(end = .);
181    __HeapBase = .;
182    . += HEAP_SIZE;
183    __HeapLimit = .;
184    __heap_limit = .; /* Add for _sbrk */
185  } > m_data
186
187  .stack :
188  {
189    . = ALIGN(8);
190    . += STACK_SIZE;
191  } > m_data
192
193  m_usb_bdt (NOLOAD) :
194  {
195    . = ALIGN(512);
196    *(m_usb_bdt)
197  } > m_usb_sram
198
199  m_usb_global (NOLOAD) :
200  {
201    *(m_usb_global)
202  } > m_usb_sram
203
204  /* Initializes stack on the end of block */
205  __StackTop   = ORIGIN(m_data) + LENGTH(m_data);
206  __StackLimit = __StackTop - STACK_SIZE;
207  PROVIDE(__stack = __StackTop);
208
209  .ARM.attributes 0 : { *(.ARM.attributes) }
210
211  ASSERT(__StackLimit >= __HeapLimit, "region m_data overflowed with stack and heap")
212}
213
214