diff options
| author | Anup Patel <anup.patel@wdc.com> | 2019-02-08 12:47:01 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2019-02-12 15:55:15 +0530 |
| commit | c5467fce469f0a5da868f1c9f90f9e4e549cb660 (patch) | |
| tree | 12c4f51bc71fa844d55bfda460ea0692094337ef /Makefile | |
| parent | 84169e2e691183594d0ba3b2acd85024c65b7370 (diff) | |
Makefile: Set ABI, ISA and Code Model in top-level make
This patch introduces following optional PLATFORM options:
PLATFORM_RISCV_XLEN -> RISC-V register width
PLATFORM_RISCV_ABI -> RISC-V GCC ABI
PLATFORM_RISCV_ISA -> RISC-V GCC ISA string
PLATFORM_RISCV_CODE_MODEL -> RISC-V GCC Code Model
If the above options are not provided by platform config.mk
or by command-line parameters then:
1. PLATFORM_RISCV_XLEN will be determined using toolchain
capability
2. PLATFORM_RISCV_ABI, PLATFORM_RISCV_ISA, and
PLATFORM_RISCV_CODE_MODEL is set to value best suited for
generic libsbi.a
As a result of these optional PLATFORM options, the
platform-cflags-y and platform-asflags-y is further
simplified for platform config.mk.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 26 |
1 files changed, 26 insertions, 0 deletions
@@ -119,10 +119,34 @@ DTC = dtc # Guess the compillers xlen OPENSBI_CC_XLEN = `expr substr \`$(CC) -dumpmachine\` 6 2` +# Setup platform XLEN, ABI, ISA and Code Model +ifndef PLATFORM_RISCV_XLEN + ifeq ($(OPENSBI_CC_XLEN), 32) + PLATFORM_RISCV_XLEN = 32 + else + PLATFORM_RISCV_XLEN = 64 + endif +endif +ifndef PLATFORM_RISCV_ABI + ifeq ($(PLATFORM_RISCV_XLEN), 32) + PLATFORM_RISCV_ABI = ilp$(PLATFORM_RISCV_XLEN) + else + PLATFORM_RISCV_ABI = lp$(PLATFORM_RISCV_XLEN) + endif +endif +ifndef PLATFORM_RISCV_ISA + PLATFORM_RISCV_ISA = rv$(PLATFORM_RISCV_XLEN)imafdc +endif +ifndef PLATFORM_RISCV_CODE_MODEL + PLATFORM_RISCV_CODE_MODEL = medany +endif + # Setup compilation commands flags CFLAGS = -g -Wall -Werror -nostdlib -fno-strict-aliasing -O2 CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls CFLAGS += -mno-save-restore -mstrict-align +CFLAGS += -mabi=$(PLATFORM_RISCV_ABI) -march=$(PLATFORM_RISCV_ISA) +CFLAGS += -mcmodel=$(PLATFORM_RISCV_CODE_MODEL) CFLAGS += $(GENFLAGS) CFLAGS += $(platform-cflags-y) CFLAGS += $(firmware-cflags-y) @@ -134,6 +158,8 @@ CPPFLAGS += $(firmware-cppflags-y) ASFLAGS = -g -Wall -nostdlib -D__ASSEMBLY__ ASFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls ASFLAGS += -mno-save-restore -mstrict-align +ASFLAGS += -mabi=$(PLATFORM_RISCV_ABI) -march=$(PLATFORM_RISCV_ISA) +ASFLAGS += -mcmodel=$(PLATFORM_RISCV_CODE_MODEL) ASFLAGS += $(GENFLAGS) ASFLAGS += $(platform-asflags-y) ASFLAGS += $(firmware-asflags-y) |