efi: x86: make efi_lookup_mapped_addr() a common function

[deliverable/linux.git] / arch / x86 / platform / efi / efi.c

diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index ed2be58ea3f1a93e3cce2652c9fb423bca68288b..fbc1d70188f8fcd017c74961d335c9f50e10d0a2 100644 (file)
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -393,6 +393,8 @@ int __init efi_memblock_x86_reserve_range(void)
 
        memblock_reserve(pmap, memmap.nr_map * memmap.desc_size);
 
+       efi.memmap = &memmap;
+
        return 0;
 }
 
@@ -736,34 +738,6 @@ static void __init runtime_code_page_mkexec(void)
        }
 }
 
-/*
- * We can't ioremap data in EFI boot services RAM, because we've already mapped
- * it as RAM.  So, look it up in the existing EFI memory map instead.  Only
- * callable after efi_enter_virtual_mode and before efi_free_boot_services.
- */
-void __iomem *efi_lookup_mapped_addr(u64 phys_addr)
-{
-       void *p;
-       if (WARN_ON(!memmap.map))
-               return NULL;
-       for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
-               efi_memory_desc_t *md = p;
-               u64 size = md->num_pages << EFI_PAGE_SHIFT;
-               u64 end = md->phys_addr + size;
-               if (!(md->attribute & EFI_MEMORY_RUNTIME) &&
-                   md->type != EFI_BOOT_SERVICES_CODE &&
-                   md->type != EFI_BOOT_SERVICES_DATA)
-                       continue;
-               if (!md->virt_addr)
-                       continue;
-               if (phys_addr >= md->phys_addr && phys_addr < end) {
-                       phys_addr += md->virt_addr - md->phys_addr;
-                       return (__force void __iomem *)(unsigned long)phys_addr;
-               }
-       }
-       return NULL;
-}
-
 void efi_memory_uc(u64 addr, unsigned long size)
 {
        unsigned long page_shift = 1UL << EFI_PAGE_SHIFT;