blob: fe3f46ab807824d2c01d6fa57a2c357eafba46c8 (
plain)
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
|
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __SYMBOLS_H
#define __SYMBOLS_H
#include <types.h>
extern u8 _dram[];
#define REGION_SIZE(name) (_e##name - _##name)
#define DECLARE_REGION(name) \
extern u8 _##name[]; \
extern u8 _e##name[];
DECLARE_REGION(sram)
DECLARE_REGION(timestamp)
DECLARE_REGION(preram_cbmem_console)
DECLARE_REGION(cbmem_init_hooks)
DECLARE_REGION(stack)
DECLARE_REGION(preram_cbfs_cache)
DECLARE_REGION(postram_cbfs_cache)
DECLARE_REGION(cbfs_cache)
DECLARE_REGION(fmap_cache)
DECLARE_REGION(tpm_tcpa_log)
#if ENV_ROMSTAGE && CONFIG(ASAN_IN_ROMSTAGE)
DECLARE_REGION(bss)
DECLARE_REGION(asan_shadow)
#endif
#if ENV_RAMSTAGE && CONFIG(ASAN_IN_RAMSTAGE)
DECLARE_REGION(data)
DECLARE_REGION(heap)
DECLARE_REGION(asan_shadow)
#endif
/* Regions for execution units. */
DECLARE_REGION(payload)
/* "program" always refers to the current execution unit. */
DECLARE_REGION(program)
/* _<stage>_size is always the maximum amount allocated in memlayout, whereas
_program_size gives the actual memory footprint *used* by current stage. */
DECLARE_REGION(decompressor)
DECLARE_REGION(bootblock)
DECLARE_REGION(verstage)
DECLARE_REGION(romstage)
DECLARE_REGION(postcar)
DECLARE_REGION(ramstage)
/* Arch-specific, move to <arch/symbols.h> if they become too many. */
DECLARE_REGION(pagetables)
DECLARE_REGION(ttb)
DECLARE_REGION(ttb_subtables)
DECLARE_REGION(dma_coherent)
DECLARE_REGION(soc_registers)
DECLARE_REGION(framebuffer)
DECLARE_REGION(pdpt)
DECLARE_REGION(opensbi)
DECLARE_REGION(bl31)
DECLARE_REGION(transfer_buffer)
/*
* Put this into a .c file accessing a linker script region to mark that region
* as "optional". If it is defined in memlayout.ld (or anywhere else), the
* values from that definition will be used. If not, start, end and size will
* all evaluate to 0. (We can't explicitly assign the symbols to 0 in the
* assembly due to https://sourceware.org/bugzilla/show_bug.cgi?id=1038.)
*/
#define DECLARE_OPTIONAL_REGION(name) asm (".weak _" #name ", _e" #name)
/* Returns true when pre-RAM symbols are known to the linker.
* (Does not necessarily mean that the memory is accessible.) */
static inline int preram_symbols_available(void)
{
return !ENV_X86 || ENV_ROMSTAGE_OR_BEFORE;
}
#endif /* __SYMBOLS_H */
|
