From eed9d40133fe6468cc253d0345c7d7332d2aaa7c Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Thu, 26 Apr 2018 20:04:48 +0200 Subject: [PATCH] ar71xx: Ubiquiti Airmax M: add relocate-kernel to invalidate cache Some Ubiquiti U-boot versions, in particular the "U-Boot 1.1.4.2-s956 (Jun 10 2015 - 10:54:50)" found with AirOS 5.6, do not correctly flush the caches for the whole kernel address range after decompressing the kernel image, leading to hard to debug boot failures, depending on kernel version and configuration. As a workaround, prepend the relocate-kernels loader, which will invalidate the caches after moving the kernel to the correct load address. Reported-by: Andreas Ziegler Signed-off-by: Matthias Schiffer --- target/linux/ar71xx/image/ubnt.mk | 1 + 1 file changed, 1 insertion(+) diff --git a/target/linux/ar71xx/image/ubnt.mk b/target/linux/ar71xx/image/ubnt.mk index 65ed708459..899d5d030e 100644 --- a/target/linux/ar71xx/image/ubnt.mk +++ b/target/linux/ar71xx/image/ubnt.mk @@ -47,6 +47,7 @@ define Device/ubnt-xm UBNT_TYPE := XM UBNT_BOARD := XM UBNT_CHIP := ar7240 + KERNEL := kernel-bin | patch-cmdline | relocate-kernel | lzma | uImage lzma IMAGES := sysupgrade.bin factory.bin IMAGE/factory.bin = $$(IMAGE/sysupgrade.bin) | mkubntimage-split IMAGE/sysupgrade.bin = append-kernel | pad-to $$$$(BLOCKSIZE) | append-rootfs | pad-rootfs | check-size $$$$(IMAGE_SIZE)