These are currently not supported. Calling 64-bit code from 64-bit U-Boot is much simpler, so this code is not needed. setjmp() is not yet implemented for 64-bit.
Signed-off-by: Simon Glass sjg@chromium.org ---
arch/x86/cpu/Makefile | 6 +++++- arch/x86/lib/bootm.c | 2 ++ 2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/x86/cpu/Makefile b/arch/x86/cpu/Makefile index 7f89ff0..f0135a7 100644 --- a/arch/x86/cpu/Makefile +++ b/arch/x86/cpu/Makefile @@ -14,7 +14,11 @@ else extra-y = start.o endif extra-$(CONFIG_$(SPL_)X86_16BIT_INIT) += resetvec.o start16.o -obj-y += cpu.o cpu_x86.o call64.o setjmp.o +ifndef CONFIG_$(SPL_)X86_64 +obj-y += call64.o setjmp.o +endif + +obj-y += cpu.o cpu_x86.o
AFLAGS_REMOVE_call32.o := -mregparm=3 \ $(if $(CONFIG_EFI_STUB_64BIT),-march=i386 -m32) diff --git a/arch/x86/lib/bootm.c b/arch/x86/lib/bootm.c index 7cf9de4..b7ed1e6 100644 --- a/arch/x86/lib/bootm.c +++ b/arch/x86/lib/bootm.c @@ -146,7 +146,9 @@ int boot_linux_kernel(ulong setup_base, ulong load_address, bool image_64bit) puts("Cannot boot 64-bit kernel on 32-bit machine\n"); return -EFAULT; } +#if !CONFIG_IS_ENABLED(X86_64) return cpu_jump_to_64bit(setup_base, load_address); +#endif } else { /* * Set %ebx, %ebp, and %edi to 0, %esi to point to the