1/*
2** ###################################################################
3**     Processor:           MIMX8QX4AVLFZ
4**     Compiler:            GNU C Compiler
5**     Reference manual:    IMX8DQXPRM, Rev. E, 6/2019
6**     Version:             rev. 4.0, 2020-06-19
7**     Build:               b201113
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/* Entry Point */
25ENTRY(Reset_Handler)
26
27HEAP_SIZE  = DEFINED(__heap_size__)  ? __heap_size__  : 0x0400;
28STACK_SIZE = DEFINED(__stack_size__) ? __stack_size__ : 0x0400;
29
30/* Reserved for PFU fetches, which is six 16-bit Thumb instructions */
31SAFE_BOUNDARY_LEN = 12;
32
33/* Specify the memory areas */
34/* M4 always start up from TCM. The SCU will copy the first 32 bytes of the binary to TCM
35if the start address is not TCM. The TCM region [0x1FFE0000-0x1FFE001F] is reserved for this purpose. */
36MEMORY
37{
38  m_interrupts          (RX)  : ORIGIN = DEFINED(__STARTUP_CONFIG_DDR_ALIAS)?0x08000000:0x88000000, LENGTH = 0x00000A00
39  m_text                (RX)  : ORIGIN = DEFINED(__STARTUP_CONFIG_DDR_ALIAS)?0x08000A00:0x88000A00, LENGTH = 0x001FF600
40  m_data                (RW)  : ORIGIN = 0x88200000, LENGTH = 0x00200000
41  m_data2               (RW)  : ORIGIN = 0x88400000, LENGTH = 0x07C00000
42  m_tcml                (RW)  : ORIGIN = 0x1FFE0020, LENGTH = 0x0001FFE0
43  m_tcmu                (RW)  : ORIGIN = 0x20000000, LENGTH = 0x00020000
44}
45
46/* Define output sections */
47SECTIONS
48{
49  /* The startup code goes first into internal RAM */
50  .interrupts :
51  {
52    . = ALIGN(4);
53    KEEP(*(.isr_vector))     /* Startup code */
54    . = ALIGN(4);
55  } > m_interrupts
56
57  .resource_table :
58  {
59    . = ALIGN(8);
60    KEEP(*(.resource_table)) /* Resource table */
61    . = ALIGN(8);
62  } > m_text
63
64  /* The program code and other data goes into internal RAM */
65  .text :
66  {
67    . = ALIGN(4);
68    *(.text)                 /* .text sections (code) */
69    *(.text*)                /* .text* sections (code) */
70    *(.rodata)               /* .rodata sections (constants, strings, etc.) */
71    *(.rodata*)              /* .rodata* sections (constants, strings, etc.) */
72    *(.glue_7)               /* glue arm to thumb code */
73    *(.glue_7t)              /* glue thumb to arm code */
74    *(.eh_frame)
75    KEEP (*(.init))
76    KEEP (*(.fini))
77    . = ALIGN(4);
78  } > m_text
79
80  .ARM.extab :
81  {
82    *(.ARM.extab* .gnu.linkonce.armextab.*)
83  } > m_text
84
85  .ARM :
86  {
87    __exidx_start = .;
88    *(.ARM.exidx*)
89    __exidx_end = .;
90  } > m_text
91
92 .ctors :
93  {
94    __CTOR_LIST__ = .;
95    /* gcc uses crtbegin.o to find the start of
96       the constructors, so we make sure it is
97       first.  Because this is a wildcard, it
98       doesn't matter if the user does not
99       actually link against crtbegin.o; the
100       linker won't look for a file to match a
101       wildcard.  The wildcard also means that it
102       doesn't matter which directory crtbegin.o
103       is in.  */
104    KEEP (*crtbegin.o(.ctors))
105    KEEP (*crtbegin?.o(.ctors))
106    /* We don't want to include the .ctor section from
107       from the crtend.o file until after the sorted ctors.
108       The .ctor section from the crtend file contains the
109       end of ctors marker and it must be last */
110    KEEP (*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors))
111    KEEP (*(SORT(.ctors.*)))
112    KEEP (*(.ctors))
113    __CTOR_END__ = .;
114  } > m_text
115
116  .dtors :
117  {
118    __DTOR_LIST__ = .;
119    KEEP (*crtbegin.o(.dtors))
120    KEEP (*crtbegin?.o(.dtors))
121    KEEP (*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors))
122    KEEP (*(SORT(.dtors.*)))
123    KEEP (*(.dtors))
124    __DTOR_END__ = .;
125  } > m_text
126
127  .preinit_array :
128  {
129    PROVIDE_HIDDEN (__preinit_array_start = .);
130    KEEP (*(.preinit_array*))
131    PROVIDE_HIDDEN (__preinit_array_end = .);
132  } > m_text
133
134  .init_array :
135  {
136    PROVIDE_HIDDEN (__init_array_start = .);
137    KEEP (*(SORT(.init_array.*)))
138    KEEP (*(.init_array*))
139    PROVIDE_HIDDEN (__init_array_end = .);
140  } > m_text
141
142  .fini_array :
143  {
144    PROVIDE_HIDDEN (__fini_array_start = .);
145    KEEP (*(SORT(.fini_array.*)))
146    KEEP (*(.fini_array*))
147    PROVIDE_HIDDEN (__fini_array_end = .);
148  } > m_text
149
150  __etext = .;    /* define a global symbol at end of code */
151  __DATA_ROM = .; /* Symbol is used by startup for data initialization */
152
153  .data : AT(__DATA_ROM)
154  {
155    . = ALIGN(4);
156    __DATA_RAM = .;
157    __data_start__ = .;      /* create a global symbol at data start */
158    *(.data)                 /* .data sections */
159    *(.data*)                /* .data* sections */
160    KEEP(*(.jcr*))
161    . = ALIGN(4);
162    __data_end__ = .;        /* define a global symbol at data end */
163  } > m_data
164
165  __TDATA_ROM = __DATA_ROM + SIZEOF(.data); /* Symbol is used by startup for TCM data initialization */
166  .quickaccess : AT(__TDATA_ROM)
167  {
168    __quickaccess_start__ = .;
169    . = ALIGN(32);
170    *(CodeQuickAccess)
171    . += SAFE_BOUNDARY_LEN;
172    *(DataQuickAccess)
173    . = ALIGN(128);
174    __quickaccess_end__ = .;
175  } > m_tcml
176
177  __CACHE_REGION_START = DEFINED(__STARTUP_CONFIG_DDR_ALIAS) ? ORIGIN(m_data) : ORIGIN(m_interrupts);
178  __CACHE_REGION_SIZE = DEFINED(__STARTUP_CONFIG_DDR_ALIAS) ? LENGTH(m_data) : LENGTH(m_interrupts) + LENGTH(m_text) + LENGTH(m_data);
179
180
181  __NDATA_ROM = __TDATA_ROM + SIZEOF(.quickaccess); /* Symbol is used by startup for ncache data initialization */
182
183  .ncache.init : AT(__NDATA_ROM)
184  {
185    __noncachedata_start__ = .;   /* create a global symbol at ncache data start */
186    *(NonCacheable.init)
187    . = ALIGN(4);
188    __noncachedata_init_end__ = .;   /* create a global symbol at initialized ncache data end */
189  } > m_data2
190
191  . = __noncachedata_init_end__;
192  .ncache :
193  {
194    *(NonCacheable)
195    . = ALIGN(4);
196    __noncachedata_end__ = .;     /* define a global symbol at ncache data end */
197  } > m_data2
198
199  __DATA_END = __NDATA_ROM + SIZEOF(.ncache.init);
200  text_end = ORIGIN(m_text) + LENGTH(m_text);
201  ASSERT(__DATA_END <= text_end, "region m_text overflowed with text and data")
202
203  /* Uninitialized data section */
204  .bss :
205  {
206    /* This is used by the startup in order to initialize the .bss section */
207    . = ALIGN(4);
208    __START_BSS = .;
209    __bss_start__ = .;
210    *(.bss)
211    *(.bss*)
212    *(COMMON)
213    . = ALIGN(4);
214    __bss_end__ = .;
215    __END_BSS = .;
216  } > m_data
217
218  .heap :
219  {
220    . = ALIGN(8);
221    __end__ = .;
222    PROVIDE(end = .);
223    __HeapBase = .;
224    . += HEAP_SIZE;
225    __HeapLimit = .;
226    __heap_limit = .; /* Add for _sbrk */
227  } > m_data
228
229  .stack :
230  {
231    . = ALIGN(8);
232    . += STACK_SIZE;
233  } > m_data
234
235  /* Initializes stack on the end of block */
236  __StackTop   = ORIGIN(m_data) + LENGTH(m_data);
237  __StackLimit = __StackTop - STACK_SIZE;
238  PROVIDE(__stack = __StackTop);
239
240  .ARM.attributes 0 : { *(.ARM.attributes) }
241
242  ASSERT(__StackLimit >= __HeapLimit, "region m_data overflowed with stack and heap")
243}
244
245