3eb8eb7eba
Start using the rmodtool for generating rmodules. rmodule_link() has been changed to create 2 rules: one for the passed in <name>, the other for creating <name>.rmod which is an ELF file in the format of an rmodule. Since the header is not compiled and linked together with an rmodule there needs to be a way of marking which symbol is the entry point. __rmodule_entry is the symbol used for knowing the entry point. There was a little churn in SMM modules to ensure an rmodule entry point symbol takes a single argument. Change-Id: Ie452ed866f6596bf13f137f5b832faa39f48d26e Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5379 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
63 lines
2.2 KiB
C
63 lines
2.2 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2014 Google Inc
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef RMODULE_DEFS_H
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#define RMODULE_DEFS_H
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#include <stdint.h>
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#include <stddef.h>
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#define RMODULE_MAGIC 0xf8fe
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#define RMODULE_VERSION_1 1
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/* All fields with '_offset' in the name are byte offsets into the flat blob.
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* The linker and the linker script takes are of assigning the values. */
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struct rmodule_header {
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uint16_t magic;
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uint8_t version;
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uint8_t type;
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/* The payload represents the program's loadable code and data. */
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uint32_t payload_begin_offset;
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uint32_t payload_end_offset;
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/* Begin and of relocation information about the program module. */
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uint32_t relocations_begin_offset;
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uint32_t relocations_end_offset;
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/* The starting address of the linked program. This address is vital
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* for determining relocation offsets as the relocation info and other
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* symbols (bss, entry point) need this value as a basis to calculate
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* the offsets.
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*/
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uint32_t module_link_start_address;
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/* The module_program_size is the size of memory used while running
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* the program. The program is assumed to consume a contiguous amount
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* of memory. */
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uint32_t module_program_size;
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/* This is program's execution entry point. */
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uint32_t module_entry_point;
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/* Optional parameter structure that can be used to pass data into
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* the module. */
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uint32_t parameters_begin;
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uint32_t parameters_end;
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/* BSS section information so the loader can clear the bss. */
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uint32_t bss_begin;
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uint32_t bss_end;
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/* Add some room for growth. */
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uint32_t padding[4];
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} __attribute__ ((packed));
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#endif /* RMODULE_DEFS_H */
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