4904802efc
The write_coreboot_table() in coreboot_table.c was already using struct memrange for managing and building up the entries that eventually go into the lb_memory table. Abstract that concept out to a bootmem memory map. The bootmem concept can then be used as a basis for loading payloads, for example. Change-Id: I7edbbca6bbd0568f658fde39ca93b126cab88367 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5302 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
48 lines
1.6 KiB
C
48 lines
1.6 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 BOOTMEM_H
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#define BOOTMEM_H
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#include <memrange.h>
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#include <stdint.h>
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#include <boot/coreboot_tables.h>
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/*
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* Initialize the memory address space prior to payload loading. The bootmem
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* serves as the source for the lb_mem table.
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*/
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void bootmem_init(void);
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/* Add a range of a given type to the bootmem address space. */
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void bootmem_add_range(uint64_t start, uint64_t size, uint32_t type);
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/* Write memory coreboot table. */
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void bootmem_write_memory_table(struct lb_memory *mem);
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/* Print current range map of boot memory. */
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void bootmem_dump_ranges(void);
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/* Return 1 if region targets usable RAM, 0 otherwise. */
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int bootmem_region_targets_usable_ram(uint64_t start, uint64_t size);
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/* Allocate a temporary buffer from the unused RAM areas. */
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void *bootmem_allocate_buffer(size_t size);
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#endif /* BOOTMEM_H */
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