microblaze: Enable REMAKE_ELF

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@amd.com>
Link: https://lore.kernel.org/r/7e242a519fcd1c693b9103c5599b515af555ca43.1655299267.git.michal.simek@amd.com

diff --git a/arch/Kconfig b/arch/Kconfig
index 4851300..02de32f 100644 (file)
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -448,7 +448,7 @@ source "arch/riscv/Kconfig"
 
 source "board/keymile/Kconfig"
 
-if MIPS
+if MIPS || MICROBLAZE
 
 choice
        prompt "Endianness selection"
@@ -460,11 +460,11 @@ choice
 
 config SYS_BIG_ENDIAN
        bool "Big endian"
-       depends on SUPPORTS_BIG_ENDIAN
+       depends on (SUPPORTS_BIG_ENDIAN && MIPS) || MICROBLAZE
 
 config SYS_LITTLE_ENDIAN
        bool "Little endian"
-       depends on SUPPORTS_LITTLE_ENDIAN
+       depends on (SUPPORTS_LITTLE_ENDIAN && MIPS) || MICROBLAZE
 
 endchoice
 

diff --git a/arch/microblaze/config.mk b/arch/microblaze/config.mk
index de5b97e..3e84a83 100644 (file)
--- 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 7994110..35e3246 100644 (file)
--- a/configs/microblaze-generic_defconfig
+++ b/configs/microblaze-generic_defconfig
@@ -14,6 +14,7 @@ CONFIG_XILINX_MICROBLAZE0_USE_BARREL=1
 CONFIG_XILINX_MICROBLAZE0_USE_DIV=1
 CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL=1
 CONFIG_DISTRO_DEFAULTS=y
+CONFIG_REMAKE_ELF=y
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_BOOTDELAY=-1