a8a8e9af57
For debugging purposes it is helpful to dump the E820 table. Reviewed by: markj MFC after: 1 week Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D39549
46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2021 Beckhoff Automation GmbH & Co. KG
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* Author: Corvin Köhne <c.koehne@beckhoff.com>
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*/
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#pragma once
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#include <vmmapi.h>
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#include "qemu_fwcfg.h"
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enum e820_memory_type {
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E820_TYPE_MEMORY = 1,
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E820_TYPE_RESERVED = 2,
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E820_TYPE_ACPI = 3,
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E820_TYPE_NVS = 4
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};
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enum e820_allocation_strategy {
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/* allocate any address */
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E820_ALLOCATE_ANY,
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/* allocate lowest address larger than address */
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E820_ALLOCATE_LOWEST,
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/* allocate highest address lower than address */
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E820_ALLOCATE_HIGHEST,
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/* allocate a specific address */
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E820_ALLOCATE_SPECIFIC
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};
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struct e820_entry {
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uint64_t base;
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uint64_t length;
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uint32_t type;
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} __packed;
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#define E820_ALIGNMENT_NONE 1
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uint64_t e820_alloc(const uint64_t address, const uint64_t length,
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const uint64_t alignment, const enum e820_memory_type type,
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const enum e820_allocation_strategy strategy);
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void e820_dump_table(void);
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struct qemu_fwcfg_item *e820_get_fwcfg_item(void);
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int e820_init(struct vmctx *const ctx);
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