linux-kernel - [PATCH v3 1/5] ARM: Kconfig: move platform selection into its own Kconfig file

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Message-ID: <20230713185252.27797-1-afd@ti.com>
Date:   Thu, 13 Jul 2023 13:52:48 -0500
From:   Andrew Davis <afd@...com>
To:     Russell King <linux@...linux.org.uk>,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Jonas Jensen <jonas.jensen@...il.com>,
        Andreas Färber <afaerber@...e.de>
CC:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, Andrew Davis <afd@...com>
Subject: [PATCH v3 1/5] ARM: Kconfig: move platform selection into its own Kconfig file

Mostly just for better organization for now. This matches what is done on
some other platforms including ARM64. This also lets us start to reduce
the number of mach- directories that only exist to store the platform
selection.

Start with "Platform selection" and ARCH_VIRT.

Signed-off-by: Andrew Davis <afd@...com>
---

Changes from v1/v2:
 - Rebased on latest master

 arch/arm/Kconfig           | 67 +------------------------------------
 arch/arm/Kconfig.platforms | 68 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 69 insertions(+), 66 deletions(-)
 create mode 100644 arch/arm/Kconfig.platforms

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7a27550ff3c1f..1c49cd5c308db 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -339,72 +339,7 @@ config ARCH_MULTIPLATFORM
 	  Selecting N here allows using those options, including
 	  DEBUG_UNCOMPRESS, XIP_KERNEL and ZBOOT_ROM. If unsure, say Y.
 
-menu "Platform selection"
-	depends on MMU
-
-comment "CPU Core family selection"
-
-config ARCH_MULTI_V4
-	bool "ARMv4 based platforms (FA526, StrongARM)"
-	depends on !ARCH_MULTI_V6_V7
-	# https://github.com/llvm/llvm-project/issues/50764
-	depends on !LD_IS_LLD || LLD_VERSION >= 160000
-	select ARCH_MULTI_V4_V5
-	select CPU_FA526 if !(CPU_SA110 || CPU_SA1100)
-
-config ARCH_MULTI_V4T
-	bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
-	depends on !ARCH_MULTI_V6_V7
-	# https://github.com/llvm/llvm-project/issues/50764
-	depends on !LD_IS_LLD || LLD_VERSION >= 160000
-	select ARCH_MULTI_V4_V5
-	select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
-		CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
-		CPU_ARM925T || CPU_ARM940T)
-
-config ARCH_MULTI_V5
-	bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
-	depends on !ARCH_MULTI_V6_V7
-	select ARCH_MULTI_V4_V5
-	select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
-		CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
-		CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
-
-config ARCH_MULTI_V4_V5
-	bool
-
-config ARCH_MULTI_V6
-	bool "ARMv6 based platforms (ARM11)"
-	select ARCH_MULTI_V6_V7
-	select CPU_V6K
-
-config ARCH_MULTI_V7
-	bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
-	default y
-	select ARCH_MULTI_V6_V7
-	select CPU_V7
-	select HAVE_SMP
-
-config ARCH_MULTI_V6_V7
-	bool
-	select MIGHT_HAVE_CACHE_L2X0
-
-config ARCH_MULTI_CPU_AUTO
-	def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
-	select ARCH_MULTI_V5
-
-endmenu
-
-config ARCH_VIRT
-	bool "Dummy Virtual Machine"
-	depends on ARCH_MULTI_V7
-	select ARM_AMBA
-	select ARM_GIC
-	select ARM_GIC_V2M if PCI
-	select ARM_GIC_V3
-	select ARM_GIC_V3_ITS if PCI
-	select ARM_PSCI
-	select HAVE_ARM_ARCH_TIMER
+source "arch/arm/Kconfig.platforms"
 
 config ARCH_AIROHA
 	bool "Airoha SoC Support"
diff --git a/arch/arm/Kconfig.platforms b/arch/arm/Kconfig.platforms
new file mode 100644
index 0000000000000..ed1f6da11e243
--- /dev/null
+++ b/arch/arm/Kconfig.platforms
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+menu "Platform selection"
+	depends on MMU
+
+comment "CPU Core family selection"
+
+config ARCH_MULTI_V4
+	bool "ARMv4 based platforms (FA526, StrongARM)"
+	depends on !ARCH_MULTI_V6_V7
+	# https://github.com/llvm/llvm-project/issues/50764
+	depends on !LD_IS_LLD || LLD_VERSION >= 160000
+	select ARCH_MULTI_V4_V5
+	select CPU_FA526 if !(CPU_SA110 || CPU_SA1100)
+
+config ARCH_MULTI_V4T
+	bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
+	depends on !ARCH_MULTI_V6_V7
+	# https://github.com/llvm/llvm-project/issues/50764
+	depends on !LD_IS_LLD || LLD_VERSION >= 160000
+	select ARCH_MULTI_V4_V5
+	select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
+		CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
+		CPU_ARM925T || CPU_ARM940T)
+
+config ARCH_MULTI_V5
+	bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
+	depends on !ARCH_MULTI_V6_V7
+	select ARCH_MULTI_V4_V5
+	select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
+		CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
+		CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
+
+config ARCH_MULTI_V4_V5
+	bool
+
+config ARCH_MULTI_V6
+	bool "ARMv6 based platforms (ARM11)"
+	select ARCH_MULTI_V6_V7
+	select CPU_V6K
+
+config ARCH_MULTI_V7
+	bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
+	default y
+	select ARCH_MULTI_V6_V7
+	select CPU_V7
+	select HAVE_SMP
+
+config ARCH_MULTI_V6_V7
+	bool
+	select MIGHT_HAVE_CACHE_L2X0
+
+config ARCH_MULTI_CPU_AUTO
+	def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
+	select ARCH_MULTI_V5
+
+endmenu
+
+config ARCH_VIRT
+	bool "Dummy Virtual Machine"
+	depends on ARCH_MULTI_V7
+	select ARM_AMBA
+	select ARM_GIC
+	select ARM_GIC_V2M if PCI
+	select ARM_GIC_V3
+	select ARM_GIC_V3_ITS if PCI
+	select ARM_PSCI
+	select HAVE_ARM_ARCH_TIMER
-- 
2.39.2