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review.coreboot.org / coreboot / e46dbcc53a10491f53a0c80c4e3c59404982b42d / . / src / include / symbols.h
blob: d7cb35c0efde25d87be053a8e575d106e9458d35 [file] [log] [blame]
Julius Wernerec5e5e02014-08-20 15:29:56 -0700[diff] [blame]1/*
2 * This file is part of the coreboot project.
3 *
4 * Copyright 2014 Google Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
Julius Wernerec5e5e02014-08-20 15:29:56 -0700[diff] [blame]14 */
15
16#ifndef __SYMBOLS_H
17#define __SYMBOLS_H
18
19#include <types.h>
20
21extern u8 _sram[];
22extern u8 _esram[];
23#define _sram_size (_esram - _sram)
24
25extern u8 _dram[];
26
Aaron Durbin1936f6c2015-07-03 17:04:21 -0500[diff] [blame]27extern u8 _timestamp[];
28extern u8 _etimestamp[];
29#define _timestamp_size (_etimestamp - _timestamp)
30
Julius Wernerec5e5e02014-08-20 15:29:56 -0700[diff] [blame]31extern u8 _preram_cbmem_console[];
32extern u8 _epreram_cbmem_console[];
33#define _preram_cbmem_console_size \
34 (_epreram_cbmem_console - _preram_cbmem_console)
35
Kyösti Mälkki4fbac462015-01-07 04:48:43 +0200[diff] [blame]36extern u8 _cbmem_init_hooks[];
37extern u8 _ecbmem_init_hooks[];
38#define _cbmem_init_hooks_size (_ecbmem_init_hooks - _cbmem_init_hooks)
39
Julius Wernerec5e5e02014-08-20 15:29:56 -0700[diff] [blame]40extern u8 _stack[];
41extern u8 _estack[];
42#define _stack_size (_estack - _stack)
43
Julius Werner757943c2015-12-16 16:07:39 -0800[diff] [blame]44extern u8 _preram_cbfs_cache[];
45extern u8 _epreram_cbfs_cache[];
46#define _preram_cbfs_cache_size (_epreram_cbfs_cache - _preram_cbfs_cache)
47
Mary Ruthvena8aef3a2015-11-24 09:43:27 -0800[diff] [blame]48extern u8 _postram_cbfs_cache[];
49extern u8 _epostram_cbfs_cache[];
50#define _postram_cbfs_cache_size (_epostram_cbfs_cache - _postram_cbfs_cache)
Mary Ruthvenf82e8ab2015-11-13 14:05:27 -0800[diff] [blame]51
Julius Wernerec5e5e02014-08-20 15:29:56 -0700[diff] [blame]52extern u8 _cbfs_cache[];
53extern u8 _ecbfs_cache[];
54#define _cbfs_cache_size (_ecbfs_cache - _cbfs_cache)
55
56extern u8 _payload[];
57extern u8 _epayload[];
58#define _payload_size (_epayload - _payload)
59
Aaron Durbin4de29d42015-09-03 22:49:36 -0500[diff] [blame]60/* "program" always refers to the current execution unit. */
Julius Wernerec5e5e02014-08-20 15:29:56 -0700[diff] [blame]61extern u8 _program[];
62extern u8 _eprogram[];
63#define _program_size (_eprogram - _program)
64
Julius Werner862c3852016-02-18 15:46:15 -0800[diff] [blame]65/* _<stage>_size is always the maximum amount allocated in memlayout, whereas
66 * _program_size gives the actual memory footprint *used* by current stage. */
67extern u8 _bootblock[];
68extern u8 _ebootblock[];
69#define _bootblock_size (_ebootblock - _bootblock)
70
71extern u8 _romstage[];
72extern u8 _eromstage[];
73#define _romstage_size (_eromstage - _romstage)
74
75extern u8 _ramstage[];
76extern u8 _eramstage[];
77#define _ramstage_size (_eramstage - _ramstage)
78
79extern u8 _verstage[];
80extern u8 _everstage[];
81#define _verstage_size (_everstage - _verstage)
82
Julius Wernerec5e5e02014-08-20 15:29:56 -0700[diff] [blame]83/* Arch-specific, move to <arch/symbols.h> if they become too many. */
84
85extern u8 _ttb[];
86extern u8 _ettb[];
87#define _ttb_size (_ettb - _ttb)
88
Julius Werner108548a2014-10-09 17:31:45 -0700[diff] [blame]89extern u8 _ttb_subtables[];
90extern u8 _ettb_subtables[];
91#define _ttb_subtables_size (_ettb_subtables - _ttb_subtables)
92
Julius Wernerec5e5e02014-08-20 15:29:56 -0700[diff] [blame]93extern u8 _dma_coherent[];
94extern u8 _edma_coherent[];
95#define _dma_coherent_size (_edma_coherent - _dma_coherent)
96
Ionela Voinescu7100cf22015-07-24 14:29:06 +0100[diff] [blame]97extern u8 _soc_registers[];
98extern u8 _esoc_registers[];
99#define _soc_registers_size (_esoc_registers - _soc_registers)
100
Julius Werner249f9cc2015-01-14 14:53:59 -0800[diff] [blame]101extern u8 _framebuffer[];
102extern u8 _eframebuffer[];
103#define _framebuffer_size (_eframebuffer - _framebuffer)
104
Julius Werner8c093772016-02-09 16:09:15 -0800[diff] [blame]105/* Put this into a .c file accessing a linker script region to mark that region
106 * as "optional". If it is defined in memlayout.ld (or anywhere else), the
107 * values from that definition will be used. If not, start, end and size will
108 * all evaluate to 0. (We can't explicitly assign the symbols to 0 in the
109 * assembly due to https://sourceware.org/bugzilla/show_bug.cgi?id=1038.) */
110#define DECLARE_OPTIONAL_REGION(name) asm (".weak _" #name ", _e" #name )
111
Julius Wernerec5e5e02014-08-20 15:29:56 -0700[diff] [blame]112#endif /* __SYMBOLS_H */