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46 lines
902 B
46 lines
902 B
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (c) 2015 Google, Inc |
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* |
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* Access to the EFI information table |
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*/ |
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#include <common.h> |
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#include <efi.h> |
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#include <errno.h> |
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#include <mapmem.h> |
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int efi_info_get(enum efi_entry_t type, void **datap, int *sizep) |
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{ |
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struct efi_entry_hdr *entry; |
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struct efi_info_hdr *info; |
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int ret; |
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if (!gd->arch.table) |
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return -ENODATA; |
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info = map_sysmem(gd->arch.table, 0); |
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if (info->version != EFI_TABLE_VERSION) { |
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ret = -EPROTONOSUPPORT; |
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goto err; |
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} |
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entry = (struct efi_entry_hdr *)((ulong)info + info->hdr_size); |
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while (entry->type != EFIET_END) { |
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if (entry->type == type) { |
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if (entry->addr) |
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*datap = map_sysmem(entry->addr, entry->size); |
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else |
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*datap = entry + 1; |
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*sizep = entry->size; |
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return 0; |
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} |
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entry = (struct efi_entry_hdr *)((ulong)entry + entry->link); |
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} |
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ret = -ENOENT; |
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err: |
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unmap_sysmem(info); |
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return ret; |
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}
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