linux-kernel - [PATCH] riscv: add Andes SoC family Kconfig support

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Message-ID: <20250305030526.1986062-1-ben717@andestech.com>
Date: Wed, 5 Mar 2025 11:05:26 +0800
From: Ben Zong-You Xie <ben717@...estech.com>
To: <linux-riscv@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
CC: <paul.walmsley@...ive.com>, <palmer@...belt.com>, <aou@...s.berkeley.edu>,
        <alex@...ti.fr>, Ben Zong-You Xie <ben717@...estech.com>
Subject: [PATCH] riscv: add Andes SoC family Kconfig support

The first SoC in the Andes series is QiLai. It includes a high-performance
quad-core RISC-V AX45MP cluster and one NX27V vector processor.

For further information, refer to [1].

[1] https://www.andestech.com/en/products-solutions/andeshape-platforms/qilai-chip/

Signed-off-by: Ben Zong-You Xie <ben717@...estech.com>
---
 arch/riscv/Kconfig.errata | 2 +-
 arch/riscv/Kconfig.socs   | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/Kconfig.errata b/arch/riscv/Kconfig.errata
index e318119d570d..be76883704a6 100644
--- a/arch/riscv/Kconfig.errata
+++ b/arch/riscv/Kconfig.errata
@@ -12,7 +12,7 @@ config ERRATA_ANDES
 
 config ERRATA_ANDES_CMO
 	bool "Apply Andes cache management errata"
-	depends on ERRATA_ANDES && ARCH_R9A07G043
+	depends on ERRATA_ANDES && (ARCH_R9A07G043 || ARCH_ANDES)
 	select RISCV_DMA_NONCOHERENT
 	default y
 	help
diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index 1916cf7ba450..b89b6e0d1bc9 100644
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -1,5 +1,14 @@
 menu "SoC selection"
 
+config ARCH_ANDES
+	bool "Andes SoCs"
+	depends on MMU && !XIP_KERNEL
+	select ERRATA_ANDES
+	select ERRATA_ANDES_CMO
+	select AX45MP_L2_CACHE
+	help
+	  This enables support for Andes SoC platform hardware.
+
 config ARCH_MICROCHIP_POLARFIRE
 	def_bool ARCH_MICROCHIP
 
-- 
2.34.1