efi: use efi_get_memory_map() to get final map for x86

Replace the open-coded memory map getting with the
efi_get_memory_map() that is now general enough to use.

Signed-off-by: Roy Franz <roy.franz@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>

diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 5e708c0..bf2c35d 100644 (file)
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -527,25 +527,12 @@ static efi_status_t exit_boot(struct boot_params *boot_params,
        u8 nr_entries;
        int i;
 
-       size = sizeof(*mem_map) * 32;
-
-again:
-       size += sizeof(*mem_map) * 2;
-       _size = size;
-       status = efi_low_alloc(sys_table, size, 1, (unsigned long *)&mem_map);
-       if (status != EFI_SUCCESS)
-               return status;
-
 get_map:
-       status = efi_call_phys5(sys_table->boottime->get_memory_map, &size,
-                               mem_map, &key, &desc_size, &desc_version);
-       if (status == EFI_BUFFER_TOO_SMALL) {
-               efi_free(sys_table, _size, (unsigned long)mem_map);
-               goto again;
-       }
+       status = efi_get_memory_map(sys_table, &mem_map, &size, &desc_size,
+                                   &desc_version, &key);
 
        if (status != EFI_SUCCESS)
-               goto free_mem_map;
+               return status;
 
        memcpy(&efi->efi_loader_signature, EFI_LOADER_SIGNATURE, sizeof(__u32));
        efi->efi_systab = (unsigned long)sys_table;
@@ -574,6 +561,7 @@ get_map:
                        goto free_mem_map;
 
                called_exit = true;
+               efi_call_phys1(sys_table->boottime->free_pool, mem_map);
                goto get_map;
        }
 
@@ -642,7 +630,7 @@ get_map:
        return EFI_SUCCESS;
 
 free_mem_map:
-       efi_free(sys_table, _size, (unsigned long)mem_map);
+       efi_call_phys1(sys_table->boottime->free_pool, mem_map);
        return status;
 }