u-boot-brain/board/synopsys/emsdp/config.mk

PLATFORM_CPPFLAGS += -mcpu=arcem -mlittle-endian -mnorm -mswap -mmpy-option=3 \
                     -mbarrel-shifter -mfpu=fpuda_all -mcode-density
ARC: rework setting of ARC CPU specific compiler options It's a very rare if at all existing occasion when ARC CPU template is used as is w/o any changes - in the end it's a beauty and competitive advantage of ARC cores to be tailored for a particular use-case - and so it doesn't make a lot of sense to offer template-based "-mcpu" selection. Given for each and every platform we end-up adding quite a few more flags it's logical to move "-mcpu" selection to platform's definition as well which we exactly do here. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> 2020-02-12 20:23:54 +09:00			`PLATFORM_CPPFLAGS += -mcpu=arcem -mlittle-endian -mnorm -mswap -mmpy-option=3 \`
arc: emsdp: Add more platform-specific compiler options Even though EM SDP is FPGA-based board and different FPGA images (known as .bit-files) are awailable for the board still there's a common subset of options we may rely on for all configs. These are: * Normalizer * Swap instructions * Simple multiplier * Barrel-shifter * Floating-point unit * Shorter instructions (code density) This among other improvements allows to compile code with 64-bit divisions, see [1]. [1] https://patchwork.ozlabs.org/patch/1156541/ Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Kever Yang <kever.yang@rock-chips.com> 2019-09-02 21:02:14 +09:00			`-mbarrel-shifter -mfpu=fpuda_all -mcode-density`