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83a938bae6
The coding guideline rules C-TY-27 and C-TY-28, combined, requires that assignment and arithmetic operations shall be applied only on operands of the same kind. This patch either adds explicit type casts or adjust types of variables to align the types of operands. The only semantic change introduced by this patch is the promotion of the second argument of set_vmcs_bit() and clear_vmcs_bit() to uint64_t (formerly uint32_t). This avoids clear_vmcs_bit() to accidentally clears the upper 32 bits of the requested VMCS field. Other than that, this patch has no semantic change. Specifically this patch is not meant to fix buggy narrowing operations, only to make these operations explicit. Tracked-On: #6776 Signed-off-by: Junjie Mao <junjie.mao@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/*
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* Copyright (C) 2021 Intel Corporation.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <types.h>
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#include <boot.h>
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#include <efi.h>
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#include <efi_mmap.h>
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#include <logmsg.h>
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static uint32_t hv_memdesc_nr;
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static struct efi_memory_desc hv_memdesc[CONFIG_MAX_EFI_MMAP_ENTRIES];
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static void sort_efi_mmap_entries(void)
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{
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uint32_t i, j;
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struct efi_memory_desc tmp_memdesc;
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/* Bubble sort */
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for (i = 0U; i < (hv_memdesc_nr - 1U); i++) {
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for (j = 0U; j < (hv_memdesc_nr - i - 1U); j++) {
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if (hv_memdesc[j].phys_addr > hv_memdesc[j + 1U].phys_addr) {
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tmp_memdesc = hv_memdesc[j];
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hv_memdesc[j] = hv_memdesc[j + 1U];
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hv_memdesc[j + 1U] = tmp_memdesc;
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}
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}
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}
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}
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void init_efi_mmap_entries(struct efi_info *uefi_info)
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{
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void *efi_memmap = (void *)((uint64_t)uefi_info->memmap | ((uint64_t)uefi_info->memmap_hi << 32U));
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struct efi_memory_desc *efi_memdesc = (struct efi_memory_desc *)efi_memmap;
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uint32_t entry = 0U;
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while ((void *)efi_memdesc < (efi_memmap + uefi_info->memmap_size)) {
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if (entry >= CONFIG_MAX_EFI_MMAP_ENTRIES) {
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pr_err("Too many efi memmap entries, entries up %d are ignored.", CONFIG_MAX_EFI_MMAP_ENTRIES);
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break;
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}
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hv_memdesc[entry] = *efi_memdesc;
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/* Per UEFI spec, EFI_MEMORY_DESCRIPTOR array element returned in MemoryMap.
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* The size is returned to allow for future expansion of the EFI_MEMORY_DESCRIPTOR
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* in response to hardware innovation. The structure of the EFI_MEMORY_DESCRIPTOR
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* may be extended in the future but it will remain backwards compatible with the
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* current definition. Thus OS software must use the DescriptorSize to find the
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* start of each EFI_MEMORY_DESCRIPTOR in the MemoryMap array.
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*/
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efi_memdesc = (struct efi_memory_desc *)((void *)efi_memdesc + uefi_info->memdesc_size);
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entry ++;
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}
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hv_memdesc_nr = entry;
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sort_efi_mmap_entries();
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}
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uint32_t get_efi_mmap_entries_count(void)
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{
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return hv_memdesc_nr;
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}
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const struct efi_memory_desc *get_efi_mmap_entry(void)
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{
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return hv_memdesc;
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}
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