1/*
2 * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7/* Simplified memory map for the bootloader.
8 *
9 * The main purpose is to make sure the bootloader can load into main memory
10 * without overwriting itself.
11 */
12
13MEMORY
14{
15#ifdef CONFIG_ESP_MULTI_PROCESSOR_BOOT
16  iram_loader_seg (RWX) :           org = 0x400AB900, len = 0x6500
17#else
18  /* iram_loader_seg is currently placed on APP_CPU cache IRAM address range */
19  iram_loader_seg (RWX) :           org = 0x40078000, len = 0x6500
20#endif
21  iram_seg (RWX) :                  org = 0x40090000, len = 0x9000
22  dram_seg (RW) :                   org = 0x3FFF4700, len = 0xB900
23}
24
25/*  Default entry point:  */
26ENTRY(main);
27
28SECTIONS
29{
30  .iram_loader.text :
31  {
32    . = ALIGN (16);
33    _loader_text_start = ABSOLUTE(.);
34    *(.stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
35    *(.iram1 .iram1.*) /* catch stray IRAM_ATTR */
36    *libhal.a:*.*(.literal .text .literal.* .text.*)
37    *esp_mcuboot.*(.literal .text .literal.* .text.*)
38    *esp_loader.*(.literal .text .literal.* .text.*)
39    *main.*(.literal .text .literal.* .text.*)
40    *(.fini.literal)
41    *(.fini)
42    *(.gnu.version)
43    _loader_text_end = ABSOLUTE(.);
44  } > iram_loader_seg
45  .iram.text :
46  {
47    . = ALIGN (16);
48    *(.entry.text)
49    *(.init.literal)
50    *(.init)
51  } > iram_seg
52  .dram0.bss (NOLOAD) :
53  {
54    . = ALIGN (8);
55    _dram_start = ABSOLUTE(.);
56    _bss_start = ABSOLUTE(.);
57    *(.dynsbss)
58    *(.sbss)
59    *(.sbss.*)
60    *(.gnu.linkonce.sb.*)
61    *(.scommon)
62    *(.sbss2)
63    *(.sbss2.*)
64    *(.gnu.linkonce.sb2.*)
65    *(.dynbss)
66    *(.bss)
67    *(.bss.*)
68    *(.gnu.linkonce.b.*)
69    *(COMMON)
70    . = ALIGN (8);
71    _bss_end = ABSOLUTE(.);
72  } >dram_seg
73  .dram0.data :
74  {
75    _data_start = ABSOLUTE(.);
76    *(.data)
77    *(.data.*)
78    *(.gnu.linkonce.d.*)
79    *(.data1)
80    *(.sdata)
81    *(.sdata.*)
82    *(.gnu.linkonce.s.*)
83    *(.sdata2)
84    *(.sdata2.*)
85    *(.gnu.linkonce.s2.*)
86    *(.jcr)
87    _data_end = ABSOLUTE(.);
88  } >dram_seg
89  .dram0.rodata :
90  {
91    _rodata_start = ABSOLUTE(.);
92    *(.rodata)
93    *(.rodata.*)
94    *(.gnu.linkonce.r.*)
95    *(.rodata1)
96    __XT_EXCEPTION_TABLE_ = ABSOLUTE(.);
97    *(.xt_except_table)
98    *(.gcc_except_table)
99    *(.gnu.linkonce.e.*)
100    *(.gnu.version_r)
101    *(.eh_frame)
102    . = (. + 3) & ~ 3;
103    /*  C++ constructor and destructor tables, properly ordered:  */
104    __init_array_start = ABSOLUTE(.);
105    KEEP (*crtbegin.*(.ctors))
106    KEEP (*(EXCLUDE_FILE (*crtend.*) .ctors))
107    KEEP (*(SORT(.ctors.*)))
108    KEEP (*(.ctors))
109    __init_array_end = ABSOLUTE(.);
110    KEEP (*crtbegin.*(.dtors))
111    KEEP (*(EXCLUDE_FILE (*crtend.*) .dtors))
112    KEEP (*(SORT(.dtors.*)))
113    KEEP (*(.dtors))
114    /*  C++ exception handlers table:  */
115    __XT_EXCEPTION_DESCS_ = ABSOLUTE(.);
116    *(.xt_except_desc)
117    *(.gnu.linkonce.h.*)
118    __XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
119    *(.xt_except_desc_end)
120    *(.dynamic)
121    *(.gnu.version_d)
122    _rodata_end = ABSOLUTE(.);
123    /* Literals are also RO data. */
124    _lit4_start = ABSOLUTE(.);
125    *(*.lit4)
126    *(.lit4.*)
127    *(.gnu.linkonce.lit4.*)
128    _lit4_end = ABSOLUTE(.);
129    . = ALIGN(4);
130    _dram_end = ABSOLUTE(.);
131  } >dram_seg
132  .iram.text :
133  {
134    _stext = .;
135    _text_start = ABSOLUTE(.);
136    *(.literal .text .literal.* .text.* .stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
137    *(.iram .iram.*) /* catch stray IRAM_ATTR */
138    *(.fini.literal)
139    *(.fini)
140    *(.gnu.version)
141    _text_end = ABSOLUTE(.);
142    _etext = .;
143  } > iram_seg
144}
145