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Lines 303-308
static void __init efi_clean_memmap(void)
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} |
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} |
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} |
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} |
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/* |
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* On EFI systems, a bootloader or EFI stub converts the EFI memory map to |
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* the E820 map consumed by Linux, typically making E820_TYPE_RESERVED |
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* entries for EFI_MEMORY_MAPPED_IO regions. |
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*/ |
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static void __init efi_clean_e820(void) |
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{ |
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efi_memory_desc_t *md; |
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u64 size, start, end; |
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for_each_efi_memory_desc(md) { |
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if (md->type == EFI_MEMORY_MAPPED_IO) { |
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size = md->num_pages << EFI_PAGE_SHIFT; |
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start = md->phys_addr; |
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end = start + size - 1; |
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pr_info("removing MMIO range=[0x%016llx-0x%016llx] (%lluMB) from E820 reservations\n", |
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start, end, size >> 20); |
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e820__range_remove(start, size, E820_TYPE_RESERVED, 1); |
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} |
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} |
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} |
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void __init efi_print_memmap(void) |
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void __init efi_print_memmap(void) |
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{ |
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{ |
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efi_memory_desc_t *md; |
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efi_memory_desc_t *md; |
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Lines 474-479
void __init efi_init(void)
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set_bit(EFI_RUNTIME_SERVICES, &efi.flags); |
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set_bit(EFI_RUNTIME_SERVICES, &efi.flags); |
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efi_clean_memmap(); |
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efi_clean_memmap(); |
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efi_clean_e820(); |
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if (efi_enabled(EFI_DBG)) |
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if (efi_enabled(EFI_DBG)) |
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efi_print_memmap(); |
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efi_print_memmap(); |
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} |
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} |