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[pxeprefix] Ignore errors from PXENV_FILE_CMDLINE 

PXENV_FILE_CMDLINE is an iPXE extension, and will not be supported by
most PXE stacks.  Do not report any errors to the user, since in
almost all cases the error will mean simply "not loaded by iPXE".

Reported-by: Patrick Domack <patrickdk@patrickdk.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/598/head
Michael Brown 2012-07-18 18:18:28 +01:00
parent 2d7c966e77
commit 9200049c80
1 changed files with 2 additions and 4 deletions
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6
src/arch/i386/prefix/pxeprefix.S
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@ -396,10 +396,8 @@ get_cmdline:
movw $0xffff, ( pxe_parameter_structure + 0x02 ) movw $0xffff, ( pxe_parameter_structure + 0x02 )
movw $PXENV_FILE_CMDLINE, %bx movw $PXENV_FILE_CMDLINE, %bx
call pxe_call call pxe_call
jnc 1f jc 99f /* Suppress errors; this is an iPXE extension API call */
call print_pxe_error /* Check for non-NULL command line */
jmp 99f
1: /* Check for non-NULL command line */
movw ( pxe_parameter_structure + 0x02 ), %ax movw ( pxe_parameter_structure + 0x02 ), %ax
testw %ax, %ax testw %ax, %ax
jz 99f jz 99f