Merge tag 'xilinx-for-v2020.07' of https://gitlab.denx.de/u-boot/custodians/u-boot-microblaze into next

Xilinx changes for v2020.07

common:
- Align ENV_FAT_INTERFACE
- Fix MAC address source print log
- Improve based autodetection code

xilinx:
- Enable netconsole

Microblaze:
- Setup default ENV_OFFSET/ENV_SECT_SIZE

Zynq:
- Multiple DT updates/fixes
- Use DEVICE_TREE environment variable for DTB selection
- Switch to single zynq configuration
- Enable NOR flash via DM
- Minor SPL print removal
- Enable i2c mux driver

ZynqMP:
- Print multiboot register
- Enable cache commands in mini mtest
- Multiple DT updates/fixes
- Fix firmware probing when driver is not enabled
- Specify 3rd backup RAM boot mode in SPL
- Add SPL support for zcu102 v1.1 and zcu111 revA
- Redesign debug uart enabling and psu_init delay
- Enable full u-boot run from EL3
- Enable u-boot.itb generation without ATF with U-Boot in EL3

Versal:
- Enable distro default
- Enable others SPI flashes
- Enable systems without DDR

Drivers:
- Gem:
  - Flush memory after freeing
  - Handle mdio bus separately
- Watchdog:
  - Get rid of unused global data pointer
  - Enable window watchdog timer
- Serial:
  - Change reinitialization logic in zynq serial driver

Signed-off-by: Tom Rini <trini@konsulko.com>

Makefile

@@ -3,7 +3,7 @@
 VERSION = 2020
 PATCHLEVEL = 04
 SUBLEVEL =
-EXTRAVERSION = -rc3
+EXTRAVERSION = -rc4
 NAME =
 
 # *DOCUMENTATION*
@@ -485,6 +485,7 @@ endif
 version_h := include/generated/version_autogenerated.h
 timestamp_h := include/generated/timestamp_autogenerated.h
 defaultenv_h := include/generated/defaultenv_autogenerated.h
+dt_h := include/generated/dt.h
 
 no-dot-config-targets := clean clobber mrproper distclean \
 			 help %docs check% coccicheck \
@@ -1654,18 +1655,17 @@ OBJCOPYFLAGS_u-boot-img-spl-at-end.bin := -I binary -O binary \
 u-boot-img-spl-at-end.bin: u-boot.img spl/u-boot-spl.bin FORCE
 	$(call if_changed,pad_cat)
 
-# Create a new ELF from a raw binary file.
-ifndef PLATFORM_ELFENTRY
-  PLATFORM_ELFENTRY = "_start"
-endif
 quiet_cmd_u-boot-elf ?= LD      $@
 	cmd_u-boot-elf ?= $(LD) u-boot-elf.o -o $@ \
-	--defsym=$(PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \
+	-T u-boot-elf.lds --defsym=$(CONFIG_PLATFORM_ELFENTRY)=$(CONFIG_SYS_TEXT_BASE) \
 	-Ttext=$(CONFIG_SYS_TEXT_BASE)
-u-boot.elf: u-boot.bin
+u-boot.elf: u-boot.bin u-boot-elf.lds
 	$(Q)$(OBJCOPY) -I binary $(PLATFORM_ELFFLAGS) $< u-boot-elf.o
 	$(call if_changed,u-boot-elf)
 
+u-boot-elf.lds: arch/u-boot-elf.lds prepare FORCE
+	$(call if_changed_dep,cpp_lds)
+
 # MediaTek's ARM-based u-boot needs a header to contains its load address
 # which is parsed by the BootROM.
 # If the SPL build is enabled, the header will be added to the spl binary,
@@ -1775,7 +1775,7 @@ endif
 # prepare2 creates a makefile if using a separate output directory
 prepare2: prepare3 outputmakefile cfg
 
-prepare1: prepare2 $(version_h) $(timestamp_h) \
+prepare1: prepare2 $(version_h) $(timestamp_h) $(dt_h) \
                    include/config/auto.conf
 ifeq ($(wildcard $(LDSCRIPT)),)
 	@echo >&2 "  Could not find linker script."
@@ -1841,12 +1841,23 @@ define filechk_defaultenv.h
 	 xxd -i ; echo ", 0x00" ; )
 endef
 
+define filechk_dt.h
+	(if test -n "$${DEVICE_TREE}"; then \
+		echo \#define DEVICE_TREE \"$(DEVICE_TREE)\"; \
+	else \
+		echo \#define DEVICE_TREE CONFIG_DEFAULT_DEVICE_TREE; \
+	fi)
+endef
+
 $(version_h): include/config/uboot.release FORCE
 	$(call filechk,version.h)
 
 $(timestamp_h): $(srctree)/Makefile FORCE
 	$(call filechk,timestamp.h)
 
+$(dt_h): $(srctree)/Makefile FORCE
+	$(call filechk,dt.h)
+
 $(defaultenv_h): $(CONFIG_DEFAULT_ENV_FILE:"%"=%) FORCE
 	$(call filechk,defaultenv.h)