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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef RMODULE_DEFS_H
#define RMODULE_DEFS_H
#include <stdint.h>
#include <stddef.h>
#define RMODULE_MAGIC 0xf8fe
#define RMODULE_VERSION_1 1
#define FIELD_ENTRY(x_) ((uint32_t)&x_)
#define RMODULE_HEADER(entry_, type_) \
{ \
.magic = RMODULE_MAGIC, \
.version = RMODULE_VERSION_1, \
.type = type_, \
.payload_begin_offset = FIELD_ENTRY(_payload_begin_offset), \
.payload_end_offset = FIELD_ENTRY(_payload_end_offset), \
.relocations_begin_offset = \
FIELD_ENTRY(_relocations_begin_offset), \
.relocations_end_offset = \
FIELD_ENTRY(_relocations_end_offset), \
.module_link_start_address = \
FIELD_ENTRY(_module_link_start_addr), \
.module_program_size = FIELD_ENTRY(_module_program_size), \
.module_entry_point = FIELD_ENTRY(entry_), \
.parameters_begin = FIELD_ENTRY(_module_params_begin), \
.parameters_end = FIELD_ENTRY(_module_params_end), \
.bss_begin = FIELD_ENTRY(_bss), \
.bss_end = FIELD_ENTRY(_ebss), \
}
/* Private data structures below should not be used directly. */
/* All fields with '_offset' in the name are byte offsets into the flat blob.
* The linker and the linker script takes are of assigning the values. */
struct rmodule_header {
uint16_t magic;
uint8_t version;
uint8_t type;
/* The payload represents the program's loadable code and data. */
uint32_t payload_begin_offset;
uint32_t payload_end_offset;
/* Begin and of relocation information about the program module. */
uint32_t relocations_begin_offset;
uint32_t relocations_end_offset;
/* The starting address of the linked program. This address is vital
* for determining relocation offsets as the relocation info and other
* symbols (bss, entry point) need this value as a basis to calculate
* the offsets.
*/
uint32_t module_link_start_address;
/* The module_program_size is the size of memory used while running
* the program. The program is assumed to consume a contiguous amount
* of memory. */
uint32_t module_program_size;
/* This is program's execution entry point. */
uint32_t module_entry_point;
/* Optional parameter structure that can be used to pass data into
* the module. */
uint32_t parameters_begin;
uint32_t parameters_end;
/* BSS section information so the loader can clear the bss. */
uint32_t bss_begin;
uint32_t bss_end;
/* Add some room for growth. */
uint32_t padding[4];
} __attribute__ ((packed));
#endif /* RMODULE_DEFS_H */
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