2020-04-02 23:48:27 +02:00
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/* SPDX-License-Identifier: GPL-2.0-only */
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/* This file is part of the coreboot project. */
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2012-12-24 21:28:37 +01:00
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#ifndef RMODULE_H
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#define RMODULE_H
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#include <stdint.h>
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2013-02-09 00:05:36 +01:00
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#include <stddef.h>
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2014-03-10 22:13:58 +01:00
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#include <string.h>
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2015-09-08 20:34:43 +02:00
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#include <commonlib/rmodule-defs.h>
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2012-12-24 21:28:37 +01:00
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enum {
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RMODULE_TYPE_SMM,
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2013-01-12 07:41:44 +01:00
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RMODULE_TYPE_SIPI_VECTOR,
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2013-02-06 22:47:31 +01:00
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RMODULE_TYPE_STAGE,
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2013-03-02 00:10:28 +01:00
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RMODULE_TYPE_VBOOT,
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2012-12-24 21:28:37 +01:00
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};
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struct rmodule;
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/* Public API for loading rmdoules. */
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int rmodule_parse(void *ptr, struct rmodule *m);
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void *rmodule_parameters(const struct rmodule *m);
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void *rmodule_entry(const struct rmodule *m);
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int rmodule_entry_offset(const struct rmodule *m);
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int rmodule_memory_size(const struct rmodule *m);
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int rmodule_load(void *loc, struct rmodule *m);
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int rmodule_load_alignment(const struct rmodule *m);
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2013-02-28 05:50:12 +01:00
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/* rmodule_calc_region() calculates the region size, offset to place an
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* rmodule in memory, and load address offset based off of a region allocator
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* with an alignment of region_alignment. This function helps place an rmodule
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2016-07-28 21:25:21 +02:00
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* in the same location in RAM it will run from. The offset to place the
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2013-02-28 05:50:12 +01:00
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* rmodule into the region allocated of size region_size is returned. The
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* load_offset is the address to load and relocate the rmodule.
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* region_alignment must be a power of 2. */
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int rmodule_calc_region(unsigned int region_alignment, size_t rmodule_size,
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2017-03-07 21:18:53 +01:00
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size_t *region_size, int *load_offset);
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2012-12-24 21:28:37 +01:00
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2013-10-24 17:14:06 +02:00
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/* Support for loading rmodule stages. This API is only available when
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* using dynamic cbmem because it uses the dynamic cbmem API to obtain
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* the backing store region for the stage. */
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2015-03-28 03:17:22 +01:00
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struct prog;
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2013-10-24 17:14:06 +02:00
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struct rmod_stage_load {
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uint32_t cbmem_id;
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2015-03-28 03:17:22 +01:00
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struct prog *prog;
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2016-03-18 05:13:34 +01:00
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void *params;
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};
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/* Both of the following functions return 0 on success, -1 on error. */
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2015-05-16 06:39:23 +02:00
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int rmodule_stage_load(struct rmod_stage_load *rsl);
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2012-12-24 21:28:37 +01:00
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struct rmodule {
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void *location;
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struct rmodule_header *header;
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const void *payload;
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int payload_size;
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void *relocations;
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};
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2019-03-06 01:53:33 +01:00
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#if CONFIG(RELOCATABLE_MODULES)
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2015-09-05 19:59:26 +02:00
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/* Rmodules have an entry point of named _start. */
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2014-03-10 22:13:58 +01:00
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#define RMODULE_ENTRY(entry_) \
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2017-03-08 00:31:49 +01:00
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void _start(void *) __attribute__((alias(STRINGIFY(entry_))))
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2014-03-10 22:13:58 +01:00
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#else
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#define RMODULE_ENTRY(entry_)
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#endif
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2012-12-24 21:28:37 +01:00
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#endif /* RMODULE_H */
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