[lkrnprefix] Fix lost command line passed by grub

iPXE specifies a value of 0 for cmdline_size, causing GRUB to not pass
in a command line.  Fix by setting cmdline_size to the maximum value
of 2047.

Signed-off-by: Valentine Barshak <gvaxon@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/arch/i386/prefix/lkrnprefix.S b/src/arch/i386/prefix/lkrnprefix.S
index f87ef85a9d5b59cd7a9af75306f4d28d5227e0a7..338ffa3d424e9321b0200d497f5084f1dce47e70 100644 (file)
--- a/src/arch/i386/prefix/lkrnprefix.S
+++ b/src/arch/i386/prefix/lkrnprefix.S
@@ -160,7 +160,7 @@ relocatable_kernel:
 pad2:
        .byte   0, 0, 0
 cmdline_size:
-       .long   0
+       .long   0x7ff
 hardware_subarch:
        .long   0
 hardware_subarch_data: