On Tue, Aug 1, 2017 at 5:11 PM, Simon Glass <s...@chromium.org> wrote: > On 27 July 2017 at 07:12, Bin Meng <bmeng...@gmail.com> wrote: >> 64-bit U-Boot image is a combination of 32-bit U-Boot (SPL) plus >> 64-bit U-Boot (proper). For the U-Boot proper, it has be compiled >> to 64-bit object codes. Attempting to use a toolchain to compile >> 64-bit U-Boot for qemu-x86_64, like kernel.org 4.9 i386-linux-gcc, >> fails with the following errors: >> >> arch/x86/cpu/intel_common/microcode.c:79:2: error: PIC register >> clobbered by 'ebx' in 'asm' >> >> The issue is because toolchain is preconfigured to generate code >> for the 32-bit architecture (i386), and currently '-m64' is missing >> in the makefile fragment. Using kernel.org 4.9 x86_64-linux-gcc >> works out of the box, since it is preconfigured to generate 64-bit >> codes. >> >> When compiling U-Boot SPL, '-m32' is passed to the toolchain, no >> mater 32-bit (i386-linux-) or 64-bit (x86_64-linux) the toolchain >> is preconfigured to generate. >> >> Signed-off-by: Bin Meng <bmeng...@gmail.com> >> >> --- >> >> Changes in v2: >> - reword the commit message >> >> arch/x86/config.mk | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) > > Reviewed-by: Simon Glass <s...@chromium.org>
applied to u-boot-x86, thanks! _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
