diff mbox series

[06/10] xilinx: zynqmp: Check that DT is 64bit aligned

Message ID 1b7f2726c54f1a8cc3cab22a1e4084dc86da1063.1629371983.git.michal.simek@xilinx.com
State Superseded
Delegated to: Michal Simek
Headers show
Series xilinx: Add support for DTB reselection | expand

Commit Message

Michal Simek Aug. 19, 2021, 11:19 a.m. UTC 
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 <michal.simek@xilinx.com>
---

 board/xilinx/zynqmp/zynqmp.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index e43177ea4e48..ea15e62eb21e 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);