efi: x86: Handle arbitrary Unicode characters

Instead of truncating UTF-16 assuming all characters is ASCII,
properly convert it to UTF-8.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
[ Bug and style fixes. ]
Signed-off-by: Roy Franz <roy.franz@linaro.org>
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 4703a6c4b8e3..0331d765c2bb 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -1087,8 +1087,7 @@ struct boot_params *make_boot_params(struct efi_config *c)
         hdr->type_of_loader = 0x21;
 
         /* Convert unicode cmdline to ascii */
-        cmdline_ptr = efi_convert_cmdline_to_ascii(sys_table, image,
-                                                   &options_size);
+        cmdline_ptr = efi_convert_cmdline(sys_table, image, &options_size);
         if (!cmdline_ptr)
                 goto fail;
         hdr->cmd_line_ptr = (unsigned long)cmdline_ptr;