[PATCH 10/22] microblaze: Enable REMAKE_ELF

[Michal Simek]

Enable u-boot.elf recreation from u-boot.bin to prepare for removing manul
relocation. Enable option for big endian configuration but it is not used
too much that's why it is completely untested.
By supporting this system there is a need to define LITTLE/BIG endian
Kconfig options to pass -EL/-EB flags.

Full command line for u-boot.elf recreation looks like this:
microblazeel-xilinx-linux-gnu-objcopy -I binary -B microblaze \
 -O elf32-microblazeel u-boot.bin u-boot-elf.o

Signed-off-by: Michal Simek <michal.simek at amd.com>
---

There are two Kconfig warnings and don't know how to fix it now.

arch/mips/Kconfig:192:warning: choice value used outside its choice group
arch/mips/Kconfig:196:warning: choice value used outside its choice group

---
 arch/microblaze/Kconfig              | 16 ++++++++++++++++
 arch/microblaze/config.mk            |  6 ++++++
 configs/microblaze-generic_defconfig |  1 +
 3 files changed, 23 insertions(+)

diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index d7d1b219704e..f1fc46e774e5 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -4,6 +4,22 @@ menu "MicroBlaze architecture"
 config SYS_ARCH
 	default "microblaze"
 
+# Endianness selection
+choice
+	prompt "Endianness selection"
+	default SYS_LITTLE_ENDIAN
+	help
+	  Microblaze architectures can be configured for either little or
+	  big endian formats. Be sure to select the appropriate mode.
+
+config SYS_BIG_ENDIAN
+	bool "Big endian"
+
+config SYS_LITTLE_ENDIAN
+	bool "Little endian"
+
+endchoice
+
 choice
 	prompt "Target select"
 	optional
diff --git a/arch/microblaze/config.mk b/arch/microblaze/config.mk
index de5b97e719cc..3e84a832fc12 100644
--- a/arch/microblaze/config.mk
+++ b/arch/microblaze/config.mk
@@ -16,3 +16,9 @@ LDFLAGS_FINAL += --gc-sections
 ifeq ($(CONFIG_SPL_BUILD),)
 PLATFORM_CPPFLAGS += -fPIC
 endif
+
+ifeq ($(CONFIG_SYS_LITTLE_ENDIAN),y)
+PLATFORM_ELFFLAGS += -B microblaze $(OBJCOPYFLAGS) -O elf32-microblazeel
+else
+PLATFORM_ELFFLAGS += -B microblaze $(OBJCOPYFLAGS) -O elf32-microblaze
+endif
diff --git a/configs/microblaze-generic_defconfig b/configs/microblaze-generic_defconfig
index c0f5d4c9a1cf..c2d25ea460b2 100644
--- a/configs/microblaze-generic_defconfig
+++ b/configs/microblaze-generic_defconfig
@@ -18,6 +18,7 @@ CONFIG_XILINX_MICROBLAZE0_USE_DIV=1
 CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL=2
 CONFIG_DEBUG_UART=y
 CONFIG_DISTRO_DEFAULTS=y
+CONFIG_REMAKE_ELF=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_BOOTDELAY=-1
-- 
2.36.0