[PATCH 1/2] MIPS: ath79: Add support for DTB passed using the UHI boot protocol

[Alban Bedel <albeu@xxxxxxx>]

This is needed for bootloader supporting UHI and to support appended
DTB.

Signed-off-by: Alban Bedel <albeu@xxxxxxx>
---
 arch/mips/ath79/setup.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index 2fdba24..2895e45 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -203,6 +203,8 @@ void __init plat_mem_setup(void)
 	fdt_start = fw_getenvl("fdt_start");
 	if (fdt_start)
 		__dt_setup_arch((void *)KSEG0ADDR(fdt_start));
+	else if (fw_arg0 == -2)
+		__dt_setup_arch((void *)KSEG0ADDR(fw_arg1));
 #ifdef CONFIG_BUILTIN_DTB
 	else
 		__dt_setup_arch(__dtb_start);
-- 
2.0.0