blob: bf26ad0b70a44612ae3df7816170426c3458c06b (
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
|
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef RMODULE_H
#define RMODULE_H
#include <stdint.h>
#include <stddef.h>
#include <string.h>
#include <commonlib/rmodule-defs.h>
enum {
RMODULE_TYPE_SMM,
RMODULE_TYPE_SIPI_VECTOR,
RMODULE_TYPE_STAGE,
RMODULE_TYPE_VBOOT,
};
struct rmodule;
/* Public API for loading rmodules. */
int rmodule_parse(void *ptr, struct rmodule *m);
void *rmodule_parameters(const struct rmodule *m);
void *rmodule_entry(const struct rmodule *m);
int rmodule_entry_offset(const struct rmodule *m);
int rmodule_memory_size(const struct rmodule *m);
int rmodule_load(void *loc, struct rmodule *m);
int rmodule_load_alignment(const struct rmodule *m);
/* rmodule_calc_region() calculates the region size, offset to place an
* rmodule in memory, and load address offset based off of a region allocator
* with an alignment of region_alignment. This function helps place an rmodule
* in the same location in RAM it will run from. The offset to place the
* rmodule into the region allocated of size region_size is returned. The
* load_offset is the address to load and relocate the rmodule.
* region_alignment must be a power of 2. */
int rmodule_calc_region(unsigned int region_alignment, size_t rmodule_size,
size_t *region_size, int *load_offset);
/* Support for loading rmodule stages. This API is only available when
* using dynamic cbmem because it uses the dynamic cbmem API to obtain
* the backing store region for the stage. */
struct prog;
struct rmod_stage_load {
uint32_t cbmem_id;
struct prog *prog;
void *params;
};
/* Both of the following functions return 0 on success, -1 on error. */
int rmodule_stage_load(struct rmod_stage_load *rsl);
struct rmodule {
void *location;
struct rmodule_header *header;
const void *payload;
int payload_size;
void *relocations;
};
#if CONFIG(RELOCATABLE_MODULES)
/* Rmodules have an entry point of named _start. */
#define RMODULE_ENTRY(entry_) \
void _start(void *) __attribute__((alias(STRINGIFY(entry_))))
#else
#define RMODULE_ENTRY(entry_)
#endif
#endif /* RMODULE_H */
|
