firmware: remove copy-base relocation

Remove copy-base relocations that are no longer needed.

Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Tested-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>

Makefile

@@ -179,6 +179,10 @@ CC_SUPPORT_STRICT_ALIGN := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) -nostdlib
 # Check whether the assembler and the compiler support the Zicsr and Zifencei extensions
 CC_SUPPORT_ZICSR_ZIFENCEI := $(shell $(CC) $(CLANG_TARGET) $(RELAX_FLAG) -nostdlib -march=rv$(OPENSBI_CC_XLEN)imafd_zicsr_zifencei -x c /dev/null -o /dev/null 2>&1 | grep "zicsr\|zifencei" > /dev/null && echo n || echo y)
 
+ifneq ($(OPENSBI_LD_PIE),y)
+$(error Your linker does not support creating PIEs, opensbi requires this.)
+endif
+
 # Build Info:
 # OPENSBI_BUILD_TIME_STAMP -- the compilation time stamp
 # OPENSBI_BUILD_COMPILER_VERSION -- the compiler version info
@@ -356,7 +360,7 @@ CFLAGS		+=	-mcmodel=$(PLATFORM_RISCV_CODE_MODEL)
 CFLAGS		+=	$(RELAX_FLAG)
 CFLAGS		+=	$(GENFLAGS)
 CFLAGS		+=	$(platform-cflags-y)
-CFLAGS		+=	-fno-pie -no-pie
+CFLAGS		+=	-fPIE -pie
 CFLAGS		+=	$(firmware-cflags-y)
 
 CPPFLAGS	+=	$(GENFLAGS)
@@ -365,6 +369,7 @@ CPPFLAGS	+=	$(firmware-cppflags-y)
 
 ASFLAGS		=	-g -Wall -nostdlib
 ASFLAGS		+=	-fno-omit-frame-pointer -fno-optimize-sibling-calls
+ASFLAGS		+=	-fPIE
 # Optionally supported flags
 ifeq ($(CC_SUPPORT_SAVE_RESTORE),y)
 ASFLAGS		+=	-mno-save-restore
@@ -391,6 +396,7 @@ ifeq ($(OPENSBI_LD_EXCLUDE_LIBS),y)
 ELFFLAGS	+=	-Wl,--exclude-libs,ALL
 endif
 ELFFLAGS	+=	-Wl,--build-id=none
+ELFFLAGS	+=	-Wl,--no-dynamic-linker -Wl,-pie
 ELFFLAGS	+=	$(platform-ldflags-y)
 ELFFLAGS	+=	$(firmware-ldflags-y)