[U-Boot] [PATCH] nds32: Enable FPU if the version of CPU supported

Some version of Andes core support FPU coprocessor, if this is the case, we should enable it at low level initialization time. Signed-off-by: Kuan-Yu Kuo Cc: Macpaul Lin --- arch/nds32/cpu/n1213/ag101/lowlevel_init.S | 22 ++ arch/nds32/cpu/n1213/ag102/lowlevel_init.S |

Re: [U-Boot] [PATCH] nds32: Enable FPU if the version of CPU supported

Hi Kuan-Yu Kuo, 2013/7/18 Kuan-Yu Kuo : > + /* > +* enable_fpu: > +* Some of Andes CPU version support FPU coprocessor, if so, > +* we should enable it. > +*/ > +enable_fpu: > + mfsr$r0, $CPU_VER /* enable FPU if it exists */ > + sr

Re: [U-Boot] [PATCH] nds32: Enable FPU if the version of CPU supported

Hi Kuan-Yu, 2013/7/18 : > Hi Kuan-Yu Kuo, > ... >> +enable_fpu: >> + mfsr$r0, $CPU_VER /* enable FPU if it exists */ >> + srli$r0, $r0, 3 >> + andi$r0, $r0, 1 >> + beqz$r0, 1f /* skip if >> no COP */ >> +