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[pxeprefix] Ignore errors from PXENV_FILE_CMDLINE

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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>
This commit is contained in:
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 $PXENV_FILE_CMDLINE, %bx
call pxe_call
jnc 1f
call print_pxe_error
jmp 99f
1: /* Check for non-NULL command line */
jc 99f /* Suppress errors; this is an iPXE extension API call */
/* Check for non-NULL command line */
movw ( pxe_parameter_structure + 0x02 ), %ax
testw %ax, %ax
jz 99f