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Diffstat (limited to 'src/include/rmodule-defs.h')
| -rw-r--r-- | src/include/rmodule-defs.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/src/include/rmodule-defs.h b/src/include/rmodule-defs.h new file mode 100644 index 0000000000..ee2d3f7bdd --- /dev/null +++ b/src/include/rmodule-defs.h @@ -0,0 +1,87 @@ +/* + * 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 */ |