diff options
| author | Anup Patel <anup.patel@wdc.com> | 2020-10-20 10:29:43 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2020-11-02 09:21:50 +0530 |
| commit | 914f81fbee28da409eac680ab3e76f1d5982c6e7 (patch) | |
| tree | a9302c40e5d61927ed6195719ad963dab3c87e2b /Makefile | |
| parent | a809f406b97cdd699f49a977f031ae9c864fe5c3 (diff) | |
Makefile: Add option to use toolchain default ABI and ISA string
When PLATFORM_RISCV_ABI and PLATFORM_RISCV_ISA are not specified,
we force "-mabi=lp64 -march=rv64gc" for RV64 and force "-mabi=ilp32
-march=rv32gc" for RV32. This can prevent users from using the
toolchain default "-mabi" and "-march" options.
To allow using toolchain defaults, we add compile-time option
PLATFORM_RISCV_TOOLCHAIN_DEFAULT which when enabled forces the
top-level makefile to use toolchain default ABI and ISA string.
To enable the option, pass "PLATFORM_RISCV_TOOLCHAIN_DEFAULT=1"
to top-level make.
Reported-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 18 |
1 files changed, 14 insertions, 4 deletions
@@ -94,6 +94,8 @@ DTC = dtc # Guess the compillers xlen OPENSBI_CC_XLEN := $(shell TMP=`$(CC) -dumpmachine | sed 's/riscv\([0-9][0-9]\).*/\1/'`; echo $${TMP}) +OPENSBI_CC_ABI := $(shell TMP=`$(CC) -v 2>&1 | sed -n 's/.*\(with\-abi=\([a-zA-Z0-9]*\)\).*/\2/p'`; echo $${TMP}) +OPENSBI_CC_ISA := $(shell TMP=`$(CC) -v 2>&1 | sed -n 's/.*\(with\-arch=\([a-zA-Z0-9]*\)\).*/\2/p'`; echo $${TMP}) # Setup platform XLEN ifndef PLATFORM_RISCV_XLEN @@ -143,14 +145,22 @@ deps-y+=$(firmware-objs-path-y:.o=.dep) # Setup platform ABI, ISA and Code Model ifndef PLATFORM_RISCV_ABI - ifeq ($(PLATFORM_RISCV_XLEN), 32) - PLATFORM_RISCV_ABI = ilp$(PLATFORM_RISCV_XLEN) + ifneq ($(PLATFORM_RISCV_TOOLCHAIN_DEFAULT), 1) + ifeq ($(PLATFORM_RISCV_XLEN), 32) + PLATFORM_RISCV_ABI = ilp$(PLATFORM_RISCV_XLEN) + else + PLATFORM_RISCV_ABI = lp$(PLATFORM_RISCV_XLEN) + endif else - PLATFORM_RISCV_ABI = lp$(PLATFORM_RISCV_XLEN) + PLATFORM_RISCV_ABI = $(OPENSBI_CC_ABI) endif endif ifndef PLATFORM_RISCV_ISA - PLATFORM_RISCV_ISA = rv$(PLATFORM_RISCV_XLEN)imafdc + ifneq ($(PLATFORM_RISCV_TOOLCHAIN_DEFAULT), 1) + PLATFORM_RISCV_ISA = rv$(PLATFORM_RISCV_XLEN)imafdc + else + PLATFORM_RISCV_ISA = $(OPENSBI_CC_ISA) + endif endif ifndef PLATFORM_RISCV_CODE_MODEL PLATFORM_RISCV_CODE_MODEL = medany |