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1 | 1 | /* |
2 | | -****************************************************************************** |
3 | | -** |
4 | | -
|
5 | | -** File : LinkerScript.ld |
6 | | -** |
7 | | -** Author : Auto-generated by Ac6 System Workbench |
8 | | -** |
9 | | -** Abstract : Linker script for STM32F411VETx series |
10 | | -** 512Kbytes FLASH and 128Kbytes RAM |
11 | | -** |
12 | | -** Set heap size, stack size and stack location according |
13 | | -** to application requirements. |
14 | | -** |
15 | | -** Set memory bank area and size if external memory is used. |
16 | | -** |
17 | | -** Target : STMicroelectronics STM32 |
18 | | -** |
19 | | -** Distribution: The file is distributed “as is,” without any warranty |
20 | | -** of any kind. |
21 | | -** |
22 | | -***************************************************************************** |
23 | | -** @attention |
24 | | -** |
25 | | -** <h2><center>© COPYRIGHT(c) 2014 Ac6</center></h2> |
26 | | -** |
27 | | -** Redistribution and use in source and binary forms, with or without modification, |
28 | | -** are permitted provided that the following conditions are met: |
29 | | -** 1. Redistributions of source code must retain the above copyright notice, |
30 | | -** this list of conditions and the following disclaimer. |
31 | | -** 2. Redistributions in binary form must reproduce the above copyright notice, |
32 | | -** this list of conditions and the following disclaimer in the documentation |
33 | | -** and/or other materials provided with the distribution. |
34 | | -** 3. Neither the name of Ac6 nor the names of its contributors |
35 | | -** may be used to endorse or promote products derived from this software |
36 | | -** without specific prior written permission. |
37 | | -** |
38 | | -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
39 | | -** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
40 | | -** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
41 | | -** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
42 | | -** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
43 | | -** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
44 | | -** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
45 | | -** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
46 | | -** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
47 | | -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
48 | | -** |
49 | | -***************************************************************************** |
| 2 | + GNU linker script for STM32F411 via Micropython |
50 | 3 | */ |
51 | 4 |
|
52 | | -/* Entry Point */ |
53 | | -ENTRY(Reset_Handler) |
54 | | - |
55 | | -/* Highest address of the user mode stack */ |
56 | | -_estack = 0x20020000; /* end of RAM */ |
57 | | -/* Generate a link error if heap and stack don't fit into RAM */ |
58 | | -_Min_Heap_Size = 0x200; /* required amount of heap */ |
59 | | -_Min_Stack_Size = 0x400; /* required amount of stack */ |
60 | | - |
61 | 5 | /* Specify the memory areas */ |
62 | 6 | MEMORY |
63 | 7 | { |
64 | | -RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K |
65 | | -FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 512K |
| 8 | + FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 512K /* entire flash */ |
| 9 | + FLASH_ISR (rx) : ORIGIN = 0x08000000, LENGTH = 16K /* sector 0 */ |
| 10 | + FLASH_FS (rx) : ORIGIN = 0x08004000, LENGTH = 48K /* sectors 1,2,3 are 16K */ |
| 11 | + FLASH_TEXT (rx) : ORIGIN = 0x08010000, LENGTH = 448K /* sector 4 is 64K, sectors 5,6,7 are 128K */ |
| 12 | + RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K |
66 | 13 | } |
67 | 14 |
|
68 | | -/* Define output sections */ |
| 15 | +/* produce a link error if there is not this amount of RAM for these sections */ |
| 16 | +_minimum_stack_size = 2K; |
| 17 | +_minimum_heap_size = 16K; |
| 18 | + |
| 19 | +/* Define tho top end of the stack. The stack is full descending so begins just |
| 20 | + above last byte of RAM. Note that EABI requires the stack to be 8-byte |
| 21 | + aligned for a call. */ |
| 22 | +_estack = ORIGIN(RAM) + LENGTH(RAM); |
| 23 | + |
| 24 | +/* RAM extents for the garbage collector */ |
| 25 | +_ram_start = ORIGIN(RAM); |
| 26 | +_ram_end = ORIGIN(RAM) + LENGTH(RAM); |
| 27 | +_heap_start = _ebss; /* heap starts just after statically allocated memory */ |
| 28 | +_heap_end = 0x2001c000; /* tunable */ |
| 29 | + |
| 30 | +ENTRY(Reset_Handler) |
| 31 | + |
| 32 | +/* define output sections */ |
69 | 33 | SECTIONS |
70 | 34 | { |
71 | | - /* The startup code goes first into FLASH */ |
72 | | - .isr_vector : |
73 | | - { |
74 | | - . = ALIGN(4); |
75 | | - KEEP(*(.isr_vector)) /* Startup code */ |
76 | | - . = ALIGN(4); |
77 | | - } >FLASH |
78 | | - |
79 | | - /* The program code and other data goes into FLASH */ |
80 | | - .text : |
81 | | - { |
82 | | - . = ALIGN(4); |
83 | | - *(.text) /* .text sections (code) */ |
84 | | - *(.text*) /* .text* sections (code) */ |
85 | | - *(.glue_7) /* glue arm to thumb code */ |
86 | | - *(.glue_7t) /* glue thumb to arm code */ |
87 | | - *(.eh_frame) |
88 | | - |
89 | | - KEEP (*(.init)) |
90 | | - KEEP (*(.fini)) |
91 | | - |
92 | | - . = ALIGN(4); |
93 | | - _etext = .; /* define a global symbols at end of code */ |
94 | | - } >FLASH |
95 | | - |
96 | | - /* Constant data goes into FLASH */ |
97 | | - .rodata : |
98 | | - { |
99 | | - . = ALIGN(4); |
100 | | - *(.rodata) /* .rodata sections (constants, strings, etc.) */ |
101 | | - *(.rodata*) /* .rodata* sections (constants, strings, etc.) */ |
102 | | - . = ALIGN(4); |
103 | | - } >FLASH |
104 | | - |
105 | | - .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH |
106 | | - .ARM : { |
107 | | - __exidx_start = .; |
108 | | - *(.ARM.exidx*) |
109 | | - __exidx_end = .; |
110 | | - } >FLASH |
111 | | - |
112 | | - .preinit_array : |
113 | | - { |
114 | | - PROVIDE_HIDDEN (__preinit_array_start = .); |
115 | | - KEEP (*(.preinit_array*)) |
116 | | - PROVIDE_HIDDEN (__preinit_array_end = .); |
117 | | - } >FLASH |
118 | | - .init_array : |
119 | | - { |
120 | | - PROVIDE_HIDDEN (__init_array_start = .); |
121 | | - KEEP (*(SORT(.init_array.*))) |
122 | | - KEEP (*(.init_array*)) |
123 | | - PROVIDE_HIDDEN (__init_array_end = .); |
124 | | - } >FLASH |
125 | | - .fini_array : |
126 | | - { |
127 | | - PROVIDE_HIDDEN (__fini_array_start = .); |
128 | | - KEEP (*(SORT(.fini_array.*))) |
129 | | - KEEP (*(.fini_array*)) |
130 | | - PROVIDE_HIDDEN (__fini_array_end = .); |
131 | | - } >FLASH |
132 | | - |
133 | | - /* used by the startup to initialize data */ |
134 | | - _sidata = LOADADDR(.data); |
135 | | - |
136 | | - /* Initialized data sections goes into RAM, load LMA copy after code */ |
137 | | - .data : |
138 | | - { |
139 | | - . = ALIGN(4); |
140 | | - _sdata = .; /* create a global symbol at data start */ |
141 | | - *(.data) /* .data sections */ |
142 | | - *(.data*) /* .data* sections */ |
143 | | - |
144 | | - . = ALIGN(4); |
145 | | - _edata = .; /* define a global symbol at data end */ |
146 | | - } >RAM AT> FLASH |
147 | | - |
148 | | - |
149 | | - /* Uninitialized data section */ |
150 | | - . = ALIGN(4); |
151 | | - .bss : |
152 | | - { |
153 | | - /* This is used by the startup in order to initialize the .bss secion */ |
154 | | - _sbss = .; /* define a global symbol at bss start */ |
155 | | - __bss_start__ = _sbss; |
156 | | - *(.bss) |
157 | | - *(.bss*) |
158 | | - *(COMMON) |
159 | | - |
160 | | - . = ALIGN(4); |
161 | | - _ebss = .; /* define a global symbol at bss end */ |
162 | | - __bss_end__ = _ebss; |
163 | | - } >RAM |
164 | | - |
165 | | - /* User_heap_stack section, used to check that there is enough RAM left */ |
166 | | - ._user_heap_stack : |
167 | | - { |
168 | | - . = ALIGN(8); |
169 | | - PROVIDE ( end = . ); |
170 | | - PROVIDE ( _end = . ); |
171 | | - . = . + _Min_Heap_Size; |
172 | | - . = . + _Min_Stack_Size; |
173 | | - . = ALIGN(8); |
174 | | - } >RAM |
175 | | - |
176 | | - |
177 | | - |
178 | | - /* Remove information from the standard libraries */ |
179 | | - /DISCARD/ : |
180 | | - { |
181 | | - libc.a ( * ) |
182 | | - libm.a ( * ) |
183 | | - libgcc.a ( * ) |
184 | | - } |
185 | | - |
186 | | - .ARM.attributes 0 : { *(.ARM.attributes) } |
| 35 | + /* The startup code goes first into FLASH */ |
| 36 | + .isr_vector : |
| 37 | + { |
| 38 | + . = ALIGN(4); |
| 39 | + KEEP(*(.isr_vector)) /* Startup code */ |
| 40 | + |
| 41 | + /* This first flash block is 16K annd the isr vectors only take up |
| 42 | + about 400 bytes. Micropython pads this with files, but this didn't |
| 43 | + work with the size of Circuitpython's ff object. */ |
| 44 | + |
| 45 | + . = ALIGN(4); |
| 46 | + } >FLASH_ISR |
| 47 | + |
| 48 | + /* The program code and other data goes into FLASH */ |
| 49 | + .text : |
| 50 | + { |
| 51 | + . = ALIGN(4); |
| 52 | + *(.text*) /* .text* sections (code) */ |
| 53 | + *(.rodata*) /* .rodata* sections (constants, strings, etc.) */ |
| 54 | + /* *(.glue_7) */ /* glue arm to thumb code */ |
| 55 | + /* *(.glue_7t) */ /* glue thumb to arm code */ |
| 56 | + |
| 57 | + . = ALIGN(4); |
| 58 | + _etext = .; /* define a global symbol at end of code */ |
| 59 | + } >FLASH_TEXT |
| 60 | + |
| 61 | + /* used by the startup to initialize data */ |
| 62 | + _sidata = LOADADDR(.data); |
| 63 | + |
| 64 | + /* This is the initialized data section |
| 65 | + The program executes knowing that the data is in the RAM |
| 66 | + but the loader puts the initial values in the FLASH (inidata). |
| 67 | + It is one task of the startup to copy the initial values from FLASH to RAM. */ |
| 68 | + .data : |
| 69 | + { |
| 70 | + . = ALIGN(4); |
| 71 | + _sdata = .; /* create a global symbol at data start; used by startup code in order to initialise the .data section in RAM */ |
| 72 | + *(.data*) /* .data* sections */ |
| 73 | + |
| 74 | + . = ALIGN(4); |
| 75 | + _edata = .; /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */ |
| 76 | + } >RAM AT> FLASH_TEXT |
| 77 | + |
| 78 | + /* Uninitialized data section */ |
| 79 | + .bss : |
| 80 | + { |
| 81 | + . = ALIGN(4); |
| 82 | + _sbss = .; /* define a global symbol at bss start; used by startup code */ |
| 83 | + *(.bss*) |
| 84 | + *(COMMON) |
| 85 | + |
| 86 | + . = ALIGN(4); |
| 87 | + _ebss = .; /* define a global symbol at bss end; used by startup code and GC */ |
| 88 | + } >RAM |
| 89 | + |
| 90 | + /* this is to define the start of the heap, and make sure we have a minimum size */ |
| 91 | + .heap : |
| 92 | + { |
| 93 | + . = ALIGN(4); |
| 94 | + . = . + _minimum_heap_size; |
| 95 | + . = ALIGN(4); |
| 96 | + } >RAM |
| 97 | + |
| 98 | + /* this just checks there is enough RAM for the stack */ |
| 99 | + .stack : |
| 100 | + { |
| 101 | + . = ALIGN(4); |
| 102 | + . = . + _minimum_stack_size; |
| 103 | + . = ALIGN(4); |
| 104 | + } >RAM |
| 105 | + |
| 106 | + .ARM.attributes 0 : { *(.ARM.attributes) } |
187 | 107 | } |
188 | 108 |
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189 | 109 |
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