From: Michal Simek <michal.simek@xilinx.com>
Date: Thu, 19 Mar 2020 09:23:56 +0000 (+0100)
Subject: arm64: xilinx: Never touch DDR if system has no DDR
X-Git-Tag: v2020.10~292^2~4^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=453bb77d09c993a0690a045308aee9813b7dd58b;p=platform%2Fkernel%2Fu-boot.git

arm64: xilinx: Never touch DDR if system has no DDR

If DDR is not mapped do not touch it. Default
XILINX_OF_BOARD_DTB_ADDR is pointing to DDR.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

diff --git a/board/xilinx/common/board.c b/board/xilinx/common/board.c
index f87e2e9..e83c692 100644
--- a/board/xilinx/common/board.c
+++ b/board/xilinx/common/board.c
@@ -41,12 +41,16 @@ int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
 #if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
 void *board_fdt_blob_setup(void)
 {
-	static void *fdt_blob = (void *)CONFIG_XILINX_OF_BOARD_DTB_ADDR;
+	static void *fdt_blob;
+
+#if !defined(CONFIG_VERSAL_NO_DDR) && !defined(CONFIG_ZYNQMP_NO_DDR)
+	fdt_blob = (void *)CONFIG_XILINX_OF_BOARD_DTB_ADDR;
 
 	if (fdt_magic(fdt_blob) == FDT_MAGIC)
 		return fdt_blob;
 
 	debug("DTB is not passed via %p\n", fdt_blob);
+#endif
 
 #ifdef CONFIG_SPL_BUILD
 	/* FDT is at end of BSS unless it is in a different memory region */