From 659c244a0b67f2a5020869aa97fd87be33cfe429 Mon Sep 17 00:00:00 2001
From: Mateusz Holenko <mholenko@antmicro.com>
Date: Mon, 17 Feb 2020 16:52:08 +0100
Subject: [PATCH] bios/boot: allow to customize flash offsets of Linux images

---
 litex/soc/software/bios/boot.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/litex/soc/software/bios/boot.c b/litex/soc/software/bios/boot.c
index 6a8285060..f49d89e49 100644
--- a/litex/soc/software/bios/boot.c
+++ b/litex/soc/software/bios/boot.c
@@ -409,10 +409,18 @@ static int copy_image_from_flash_to_ram(unsigned int flash_address, unsigned int
 }
 #endif
 
-#define KERNEL_IMAGE_FLASH_OFFSET      0x00000000 //  0MB
-#define ROOTFS_IMAGE_FLASH_OFFSET      0x00500000 //  5MB
-#define DEVICE_TREE_IMAGE_FLASH_OFFSET 0x00D00000 // 13MB
-#define EMULATOR_IMAGE_FLASH_OFFSET    0x00E00000 // 14MB
+#ifndef KERNEL_IMAGE_FLASH_OFFSET
+	#define KERNEL_IMAGE_FLASH_OFFSET      0x00000000 //  0MB
+#endif
+#ifndef ROOTFS_IMAGE_FLASH_OFFSET
+	#define ROOTFS_IMAGE_FLASH_OFFSET      0x00500000 //  5MB
+#endif
+#ifndef DEVICE_TREE_IMAGE_FLASH_OFFSET
+	#define DEVICE_TREE_IMAGE_FLASH_OFFSET 0x00D00000 // 13MB
+#endif
+#ifndef EMULATOR_IMAGE_FLASH_OFFSET
+	#define EMULATOR_IMAGE_FLASH_OFFSET    0x00E00000 // 14MB
+#endif
 
 void flashboot(void)
 {