From 5bd5ee02b23be2062c5e0c194355534eaa7e7854 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Thu, 19 Aug 2021 11:07:59 +0200 Subject: [PATCH] xilinx: zynqmp: Check that DT is 64bit aligned DT needs to be 64bit aligned. If it is not fdt64_to_cpu will fail when try to read information about reserved memory. The system ends in exception without any clue what's going it. That's why detect not aligned DT and panic to show where the issue is coming from. Signed-off-by: Michal Simek --- board/xilinx/zynqmp/zynqmp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c index e43177e..ea15e62 100644 --- a/board/xilinx/zynqmp/zynqmp.c +++ b/board/xilinx/zynqmp/zynqmp.c @@ -470,6 +470,9 @@ ulong board_get_usable_ram_top(ulong total_size) phys_addr_t reg; struct lmb lmb; + if (!IS_ALIGNED((ulong)gd->fdt_blob, 0x8)) + panic("Not 64bit aligned DT location: %p\n", gd->fdt_blob); + /* found enough not-reserved memory to relocated U-Boot */ lmb_init(&lmb); lmb_add(&lmb, gd->ram_base, gd->ram_size); -- 2.7.4