--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -770,6 +770,9 @@ config SYNC_R4K
 
 config MIPS_MACHINE
 	def_bool n
+	
+config PROM_EMU
+	def_bool n
 
 config IMAGE_CMDLINE_HACK
 	bool "OpenWrt specific image command line hack"
--- a/arch/mips/kernel/head.S
+++ b/arch/mips/kernel/head.S
@@ -149,6 +149,15 @@ EXPORT(__image_cmdline)
 	.fill	0x400
 #endif /* CONFIG_IMAGE_CMDLINE_HACK */
 
+#ifdef CONFIG_PROM_EMU
+EXPORT(prom_emu_argv)
+	.word	0
+	.word	prom_emu_cmdline
+	.ascii	"CMDLINE:"
+EXPORT(prom_emu_cmdline)
+	.fill	0x400
+#endif
+
 	__REF
 
 NESTED(kernel_entry, 16, sp)			# kernel entry point
@@ -189,6 +198,19 @@ NESTED(kernel_entry, 16, sp)			# kernel 
 	LONG_S		zero, (t0)
 	bne		t0, t1, 1b
 
+#ifdef CONFIG_PROM_EMU
+	PTR_LA		t0, prom_emu_cmdline
+	LONG_L		t1, 0(t0)
+	beqz		t1, 1f
+
+	li		a0, 2
+	PTR_LA		a1, prom_emu_argv
+	move		a2, zero
+	move		a3, zero
+
+1:
+#endif /* CONFIG_PROM_EMU */
+
 	LONG_S		a0, fw_arg0		# firmware arguments
 	LONG_S		a1, fw_arg1
 	LONG_S		a2, fw_arg2