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https://github.com/projectacrn/acrn-hypervisor.git
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22e08d541f
The e820 module could get the RAM info on run time, but the RAM size and MAX address was limited by CONFIG_PLATFORM_RAM_SIZE which was predefined by config tool. Current solution can't support single binary for different boards or platforms and the CONFIG_PLATFORM_RAM_SIZE can't matching the RAM size if user have not update config tools setting after the device changed. So this patch remove the CONFIG_PLATFORM_RAM_SIZE and calculate ram size on run time. Tracked-On: #6690 Acked-by: Anthony Xu <anthony.xu@intel.com> Signed-off-by: Chenli Wei <chenli.wei@linux.intel.com>
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef E820_H
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#define E820_H
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#include <types.h>
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/* E820 memory types */
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#define E820_TYPE_RAM 1U /* EFI 1, 2, 3, 4, 5, 6, 7 */
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#define E820_TYPE_RESERVED 2U
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/* EFI 0, 11, 12, 13 (everything not used elsewhere) */
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#define E820_TYPE_ACPI_RECLAIM 3U /* EFI 9 */
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#define E820_TYPE_ACPI_NVS 4U /* EFI 10 */
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#define E820_TYPE_UNUSABLE 5U /* EFI 8 */
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#define E820_MAX_ENTRIES 64U
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/** Defines a single entry in an E820 memory map. */
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struct e820_entry {
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/** The base address of the memory range. */
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uint64_t baseaddr;
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/** The length of the memory range. */
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uint64_t length;
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/** The type of memory region. */
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uint32_t type;
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} __packed;
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struct mem_range {
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uint64_t mem_bottom;
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uint64_t mem_top;
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uint64_t total_mem_size;
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};
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/* HV read multiboot header to get e820 entries info and calc total RAM info */
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void init_e820(void);
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uint64_t e820_alloc_memory(uint64_t size_arg, uint64_t max_addr);
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uint64_t get_e820_ram_size(void);
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/* get total number of the e820 entries */
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uint32_t get_e820_entries_count(void);
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/* get the e802 entiries */
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const struct e820_entry *get_e820_entry(void);
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#endif
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