| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2012 ChromeOS Authors |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc. |
| */ |
| #ifndef RMODULE_H |
| #define RMODULE_H |
| |
| #include <stdint.h> |
| #include <stddef.h> |
| #include <string.h> |
| #include <rmodule-defs.h> |
| |
| enum { |
| RMODULE_TYPE_SMM, |
| RMODULE_TYPE_SIPI_VECTOR, |
| RMODULE_TYPE_STAGE, |
| RMODULE_TYPE_VBOOT, |
| }; |
| |
| struct rmodule; |
| |
| /* Public API for loading rmdoules. */ |
| 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; |
| }; |
| |
| /* 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 IS_ENABLED(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 */ |