From: John Crispin <john@phrozen.org>
Subject: hack: kernel: add generic image_cmdline hack to MIPS targets

lede-commit: d59f5b3a987a48508257a0ddbaeadc7909f9f976
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
---
 arch/mips/Kconfig       | 4 ++++
 arch/mips/kernel/head.S | 6 ++++++
 2 files changed, 10 insertions(+)

--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1164,6 +1164,10 @@ config SYNC_R4K
 config MIPS_MACHINE
 	def_bool n
 
+config IMAGE_CMDLINE_HACK
+	bool "OpenWrt specific image command line hack"
+	default n
+
 config NO_IOPORT_MAP
 	def_bool n
 
--- a/arch/mips/kernel/head.S
+++ b/arch/mips/kernel/head.S
@@ -79,6 +79,12 @@ FEXPORT(__kernel_entry)
 	j	kernel_entry
 #endif /* CONFIG_BOOT_RAW */
 
+#ifdef CONFIG_IMAGE_CMDLINE_HACK
+	.ascii	"CMDLINE:"
+EXPORT(__image_cmdline)
+	.fill	0x400
+#endif /* CONFIG_IMAGE_CMDLINE_HACK */
+
 	__REF
 
 NESTED(kernel_entry, 16, sp)			# kernel entry point