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https://github.com/projectacrn/acrn-hypervisor.git
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9dfac7a7a3
Hypervisor use e820_alloc_memory() api to allocate memory for trampoline code and ept pages, whereas the usable ram in hv_e820 might include efi boot service region if system boot from uefi environment, this would result in some uefi service broken in SOS. These boot service region should be filtered from hv_e820. This patch will parse the efi memory descriptor entries info from efi memory map pointer when system boot from uefi environment, and then initialize hv_e820 accordingly, that all efi boot service region would be kept as reserved in hv_e820. Please note the original efi memory map could be above 4GB address space, so the efi memory parsing process must be done after enable_paging(). Tracked-On: #5626 Signed-off-by: Victor Sun <victor.sun@intel.com> Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/*
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* Copyright (C) 2020 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 EFI_H
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#define EFI_H
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/* EFI Memory Attribute values: */
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#define EFI_MEMORY_UC 0x0000000000000001UL /* uncached */
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#define EFI_MEMORY_WC 0x0000000000000002UL /* write-coalescing */
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#define EFI_MEMORY_WT 0x0000000000000004UL /* write-through */
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#define EFI_MEMORY_WB 0x0000000000000008UL /* write-back */
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/*
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#define EFI_MEMORY_UCE 0x0000000000000010UL
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#define EFI_MEMORY_WP 0x0000000000001000UL
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#define EFI_MEMORY_RP 0x0000000000002000UL
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#define EFI_MEMORY_XP 0x0000000000004000UL
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#define EFI_MEMORY_NV 0x0000000000008000UL
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#define EFI_MEMORY_MORE_RELIABLE 0x0000000000010000UL
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#define EFI_MEMORY_RO 0x0000000000020000UL
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#define EFI_MEMORY_SP 0x0000000000040000UL
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#define EFI_MEMORY_CPU_CRYPTO 0x0000000000080000UL
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#define EFI_MEMORY_RUNTIME 0x8000000000000000UL
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*/
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enum efi_memory_type {
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EFI_RESERVED_MEMORYTYPE,
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EFI_LOADER_CODE,
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EFI_LOADER_DATA,
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EFI_BOOT_SERVICES_CODE,
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EFI_BOOT_SERVICES_DATA,
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EFI_RUNTIME_SERVICES_CODE,
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EFI_RUNTIME_SERVICES_DATA,
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EFI_CONVENTIONAL_MEMORY,
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EFI_UNUSABLE_MEMORY,
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EFI_ACPI_RECLAIM_MEMORY,
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EFI_ACPI_MEMORY_NVS,
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EFI_MEMORYMAPPED_IO,
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EFI_MEMORYMAPPED_IOPORTSPACE,
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EFI_PALCODE,
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EFI_PERSISTENT_MEMORY,
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EFI_MAX_MEMORYTYPE
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};
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struct efi_memory_desc {
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uint32_t type;
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uint32_t pad;
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uint64_t phys_addr;
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uint64_t virt_addr;
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uint64_t num_pages;
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uint64_t attribute;
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};
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struct efi_info {
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uint32_t loader_signature; /* 0x1c0 */
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uint32_t systab; /* 0x1c4 */
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uint32_t memdesc_size; /* 0x1c8 */
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uint32_t memdesc_version; /* 0x1cc */
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uint32_t memmap; /* 0x1d0 */
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uint32_t memmap_size; /* 0x1d4 */
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uint32_t systab_hi; /* 0x1d8 */
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uint32_t memmap_hi; /* 0x1dc */
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} __packed;
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#endif
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