riscv64: Do not use global pointer register

common/GNUmakefile

@@ -195,6 +195,7 @@ endif
 ifeq ($(TARGET),uefi-riscv64)
     override LDFLAGS_FOR_TARGET += \
         -m elf64lriscv \
+        --no-relax \
         -static \
         -pie \
         --no-dynamic-linker \

common/efi_thunk.asm_uefi_riscv64

@@ -3,10 +3,6 @@
 .global efi_main
 .extern uefi_entry
 efi_main:
-.option push
-.option norelax
-        lla     gp, __global_pointer$
-.option pop
         mv      fp, zero
         mv      ra, zero
         j       uefi_entry

common/linker_uefi_riscv64.ld.in

@@ -1,5 +1,5 @@
 OUTPUT_FORMAT(elf64-littleriscv)
-OUTPUT_ARCH(riscv)
+OUTPUT_ARCH(riscv:rv64)
 ENTRY(_start)
 
 PHDRS
@@ -60,9 +60,6 @@ SECTIONS
 
    data_begin = .;
         *(.data .data.*)
-        __global_pointer$ = . + 0x800;
-        *(.sdata .sdata.*)
-        *(.sbss .sbss.*)
         *(.bss .bss.*)
         *(COMMON)
    data_end = .;