bitbox02-firmware/bootloader-stage1.ld at master · BitBoxSwiss/bitbox02-firmware · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
OUTPUT_ARCH(arm)
SEARCH_DIR(.)

MEMORY
{
  /* Stage1 lives after the 8kB stage0 block and before the factory randomness. */
  rom      (rx)  : ORIGIN = 0x00002000, LENGTH = 0x0000BFE0
  ram      (rwx) : ORIGIN = 0x20000200, LENGTH = 0x0003FE00
  bkupram  (rwx) : ORIGIN = 0x47000000, LENGTH = 0x00002000
  qspi     (rwx) : ORIGIN = 0x04000000, LENGTH = 0x01000000
}

STACK_SIZE = DEFINED(STACK_SIZE) ? STACK_SIZE : DEFINED(__stack_size__) ? __stack_size__ : 0x10000;
HEAP_SIZE = DEFINED(HEAP_SIZE) ? HEAP_SIZE : DEFINED(__heap_size__) ? __heap_size__ : 0x10000;

SECTIONS
{
    .stage1_header ORIGIN(rom) :
    {
        KEEP(*(.stage1_header))
    } > rom

    .vectors ORIGIN(rom) + 0x400 :
    {
        . = ALIGN(4);
        _sfixed = .;
        KEEP(*(.vectors .vectors.*))
    } > rom

    .text :
    {
        . = ALIGN(4);
        *(.text .text.* .gnu.linkonce.t.*)
        *(.glue_7t) *(.glue_7)
        *(.rodata .rodata* .gnu.linkonce.r.*)
        *(.ARM.extab* .gnu.linkonce.armextab.*)

        . = ALIGN(4);
        KEEP(*(.init))
        . = ALIGN(4);
        __preinit_array_start = .;
        KEEP (*(.preinit_array))
        __preinit_array_end = .;

        . = ALIGN(4);
        __init_array_start = .;
        KEEP (*(SORT(.init_array.*)))
        KEEP (*(.init_array))
        __init_array_end = .;

        . = ALIGN(4);
        KEEP (*crtbegin.o(.ctors))
        KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
        KEEP (*(SORT(.ctors.*)))
        KEEP (*crtend.o(.ctors))

        . = ALIGN(4);
        KEEP(*(.fini))

        . = ALIGN(4);
        __fini_array_start = .;
        KEEP (*(.fini_array))
        KEEP (*(SORT(.fini_array.*)))
        __fini_array_end = .;

        KEEP (*crtbegin.o(.dtors))
        KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
        KEEP (*(SORT(.dtors.*)))
        KEEP (*crtend.o(.dtors))

        . = ALIGN(4);
        _efixed = .;
    } > rom

    PROVIDE_HIDDEN (__exidx_start = .);
    .ARM.exidx :
    {
      *(.ARM.exidx* .gnu.linkonce.armexidx.*)
    } > rom
    PROVIDE_HIDDEN (__exidx_end = .);

    . = ALIGN(4);
    _etext = .;

    .rtt (NOLOAD) :
    {
        . = ALIGN(4);
        _srtt = .;
        *(.segger_rtt);
        *(.segger_rtt_buf);
        _ertt = .;
    } > ram

    .relocate :
    {
        . = ALIGN(4);
        _srelocate = .;
        *(.ramfunc .ramfunc.*);
        *(.data .data.*);
        . = ALIGN(4);
        _erelocate = .;
    } > ram AT> rom

    .bkupram (NOLOAD):
    {
        . = ALIGN(8);
        _sbkupram = .;
        *(.bkupram .bkupram.*);
        . = ALIGN(8);
        _ebkupram = .;
    } > bkupram

    .qspi (NOLOAD):
    {
        . = ALIGN(8);
        _sqspi = .;
        *(.qspi .qspi.*);
        . = ALIGN(8);
        _eqspi = .;
    } > qspi

    .bss (NOLOAD) :
    {
        . = ALIGN(4);
        _sbss = .;
        _szero = .;
        *(.bss .bss.*)
        *(COMMON)
        . = ALIGN(4);
        _ebss = .;
        _ezero = .;
    } > ram

    .stack (NOLOAD):
    {
        . = ALIGN(8);
        _sstack = .;
        . = . + STACK_SIZE;
        . = ALIGN(8);
        _estack = .;
    } > ram

    . = ALIGN(4);
    _end = .;

    .heap (NOLOAD):
    {
        . = ALIGN(8);
        _heap_start = .;
        . = . + HEAP_SIZE;
        . = ALIGN(8);
        _heap_end = .;
    } > ram
}

ASSERT(SIZEOF(.stage1_header) == 0x400, "stage1 header size changed")
ASSERT(ADDR(.vectors) == ORIGIN(rom) + 0x400, "stage1 vector table offset changed")
ASSERT(_etext <= ORIGIN(rom) + LENGTH(rom), "stage1 overlaps factory randomness")