arm: mvebu: Espressobin: Set default value for $fdtfile env variable
On Espressobin board value for $fdtfile cannot be determined at compile
time and is calculated at board runtime code. This change uses a new option
DEFAULT_ENV_IS_RW to allow modifying default_environment[] array at runtime
and set into it correct value.
This change also ensure that 'env default -a' set correct value to $fdtfile.
Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Andre Heider <a.heider@gmail.com>
diff --git a/include/configs/mvebu_armada-37xx.h b/include/configs/mvebu_armada-37xx.h
index 0d58560..6df7023 100644
--- a/include/configs/mvebu_armada-37xx.h
+++ b/include/configs/mvebu_armada-37xx.h
@@ -58,6 +58,11 @@
#define CONFIG_MTD_PARTITIONS /* required for UBI partition support */
/*
+ * Environment
+ */
+#define DEFAULT_ENV_IS_RW /* required for configuring default fdtfile= */
+
+/*
* Ethernet Driver configuration
*/
#define CONFIG_ARP_TIMEOUT 200
@@ -87,6 +92,11 @@
#include <config_distro_bootcmd.h>
+/* filler for default values filled by board_early_init_f() */
+#define ENV_RW_FILLER \
+ "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" /* for fdtfile= */ \
+ ""
+
/* fdt_addr and kernel_addr are needed for existing distribution boot scripts */
#define CONFIG_EXTRA_ENV_SETTINGS \
"scriptaddr=0x6d00000\0" \
@@ -96,6 +106,7 @@
"kernel_addr=0x7000000\0" \
"kernel_addr_r=0x7000000\0" \
"ramdisk_addr_r=0xa000000\0" \
- BOOTENV
+ BOOTENV \
+ ENV_RW_FILLER
#endif /* _CONFIG_MVEBU_ARMADA_37XX_H */