| Aaron Durbin | 4e6ad1b | 2014-03-10 09:53:34 -0500 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 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. |
| Aaron Durbin | 4e6ad1b | 2014-03-10 09:53:34 -0500 | [diff] [blame] | 14 | */ |
| 15 | #ifndef RMODULE_DEFS_H |
| 16 | #define RMODULE_DEFS_H |
| 17 | |
| 18 | #include <stdint.h> |
| 19 | #include <stddef.h> |
| 20 | |
| 21 | #define RMODULE_MAGIC 0xf8fe |
| 22 | #define RMODULE_VERSION_1 1 |
| 23 | |
| Aaron Durbin | 4e6ad1b | 2014-03-10 09:53:34 -0500 | [diff] [blame] | 24 | /* All fields with '_offset' in the name are byte offsets into the flat blob. |
| 25 | * The linker and the linker script takes are of assigning the values. */ |
| 26 | struct rmodule_header { |
| 27 | uint16_t magic; |
| 28 | uint8_t version; |
| 29 | uint8_t type; |
| 30 | /* The payload represents the program's loadable code and data. */ |
| 31 | uint32_t payload_begin_offset; |
| 32 | uint32_t payload_end_offset; |
| 33 | /* Begin and of relocation information about the program module. */ |
| 34 | uint32_t relocations_begin_offset; |
| 35 | uint32_t relocations_end_offset; |
| 36 | /* The starting address of the linked program. This address is vital |
| 37 | * for determining relocation offsets as the relocation info and other |
| 38 | * symbols (bss, entry point) need this value as a basis to calculate |
| 39 | * the offsets. |
| 40 | */ |
| 41 | uint32_t module_link_start_address; |
| 42 | /* The module_program_size is the size of memory used while running |
| 43 | * the program. The program is assumed to consume a contiguous amount |
| 44 | * of memory. */ |
| 45 | uint32_t module_program_size; |
| 46 | /* This is program's execution entry point. */ |
| 47 | uint32_t module_entry_point; |
| 48 | /* Optional parameter structure that can be used to pass data into |
| 49 | * the module. */ |
| 50 | uint32_t parameters_begin; |
| 51 | uint32_t parameters_end; |
| 52 | /* BSS section information so the loader can clear the bss. */ |
| 53 | uint32_t bss_begin; |
| 54 | uint32_t bss_end; |
| 55 | /* Add some room for growth. */ |
| 56 | uint32_t padding[4]; |
| 57 | } __attribute__ ((packed)); |
| 58 | |
| 59 | #endif /* RMODULE_DEFS_H */ |