linux-kernel - [PATCH] riscv: add rv32 and rv64 randconfig build targets

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Date:   Fri, 16 Jul 2021 21:44:24 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        linux-riscv@...ts.infradead.org
Subject: [PATCH] riscv: add rv32 and rv64 randconfig build targets

Add the ability to do randconfig build targets for both
rv32 and rv64.

Based on a similar patch by Michael Ellerman for PowerPC.

Usage:
  make ARCH=riscv rv32_randconfig
or
  make ARCH=riscv rv64_randconfig

Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Paul Walmsley <paul.walmsley@...ive.com>
Cc: Palmer Dabbelt <palmer@...belt.com>
Cc: Albert Ou <aou@...s.berkeley.edu>
Cc: linux-riscv@...ts.infradead.org

 arch/riscv/Makefile              |   10 ++++++++++
 arch/riscv/configs/32-bit.config |    2 ++
 arch/riscv/configs/64-bit.config |    2 ++
 3 files changed, 14 insertions(+)

--- linux-next-20210715.orig/arch/riscv/Makefile
+++ linux-next-20210715/arch/riscv/Makefile
@@ -132,3 +132,13 @@ zinstall install:
 
 archclean:
 	$(Q)$(MAKE) $(clean)=$(boot)
+
+PHONY += rv32_randconfig
+rv32_randconfig:
+	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/riscv/configs/32-bit.config \
+		-f $(srctree)/Makefile randconfig
+
+PHONY += rv64_randconfig
+rv64_randconfig:
+	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/riscv/configs/64-bit.config \
+		-f $(srctree)/Makefile randconfig
--- /dev/null
+++ linux-next-20210715/arch/riscv/configs/32-bit.config
@@ -0,0 +1,2 @@
+CONFIG_ARCH_RV32I=y
+CONFIG_32BIT=y
--- /dev/null
+++ linux-next-20210715/arch/riscv/configs/64-bit.config
@@ -0,0 +1,2 @@
+CONFIG_ARCH_RV64I=y
+CONFIG_64BIT=y