efi_loader: use library memcpy() in helloworld.efi

Helloworld does not need its own memcpy() implementation anymore. Use the
one provided in efi_freestanding.c.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

diff --git a/lib/efi_loader/helloworld.c b/lib/efi_loader/helloworld.c
index 2905479..426f276 100644 (file)
--- a/lib/efi_loader/helloworld.c
+++ b/lib/efi_loader/helloworld.c
@@ -17,30 +17,6 @@ static const efi_guid_t fdt_guid = EFI_FDT_GUID;
 static const efi_guid_t acpi_guid = EFI_ACPI_TABLE_GUID;
 static const efi_guid_t smbios_guid = SMBIOS_TABLE_GUID;
 
-/**
- * hw_memcmp() - compare memory areas
- *
- * @buf1:      pointer to first area
- * @buf2:      pointer to second area
- * @length:    number of bytes to compare
- * Return:     0 if both memory areas are the same, otherwise the sign of the
- *             result value is the same as the sign of ghe difference between
- *             the first differing pair of bytes taken as u8.
- */
-static int hw_memcmp(const void *buf1, const void *buf2, size_t length)
-{
-       const u8 *pos1 = buf1;
-       const u8 *pos2 = buf2;
-
-       for (; length; --length) {
-               if (*pos1 != *pos2)
-                       return *pos1 - *pos2;
-               ++pos1;
-               ++pos2;
-       }
-       return 0;
-}
-
 /**
  * efi_main() - entry point of the EFI application.
  *
@@ -88,16 +64,16 @@ efi_status_t EFIAPI efi_main(efi_handle_t handle,
        }
        /* Find configuration tables */
        for (i = 0; i < systable->nr_tables; ++i) {
-               if (!hw_memcmp(&systable->tables[i].guid, &fdt_guid,
-                              sizeof(efi_guid_t)))
+               if (!memcmp(&systable->tables[i].guid, &fdt_guid,
+                           sizeof(efi_guid_t)))
                        con_out->output_string
                                        (con_out, L"Have device tree\r\n");
-               if (!hw_memcmp(&systable->tables[i].guid, &acpi_guid,
-                              sizeof(efi_guid_t)))
+               if (!memcmp(&systable->tables[i].guid, &acpi_guid,
+                           sizeof(efi_guid_t)))
                        con_out->output_string
                                        (con_out, L"Have ACPI 2.0 table\r\n");
-               if (!hw_memcmp(&systable->tables[i].guid, &smbios_guid,
-                              sizeof(efi_guid_t)))
+               if (!memcmp(&systable->tables[i].guid, &smbios_guid,
+                           sizeof(efi_guid_t)))
                        con_out->output_string
                                        (con_out, L"Have SMBIOS table\r\n");
        }