[PATCH v1] RISC-V: make ARCH_THEAD preclude XIP_KERNEL

* [PATCH v1] RISC-V: make ARCH_THEAD preclude XIP_KERNEL
@ 2023-06-21 19:00 ` Conor Dooley
  0 siblings, 0 replies; 10+ messages in thread
From: Conor Dooley @ 2023-06-21 19:00 UTC (permalink / raw)
  To: linux-riscv
  Cc: conor, Conor Dooley, Randy Dunlap, Paul Walmsley, Palmer Dabbelt,
	Albert Ou, Jisheng Zhang, linux-kernel

From: Conor Dooley <conor.dooley@microchip.com>

Randy reported build errors in linux-next where XIP_KERNEL was enabled.
ARCH_THEAD requires alternatives to support the non-standard ISA
extensions used by the THEAD cores, which are mutually exclusive with
XIP kernels. Clone the dependency list from the Allwinner entry, since
Allwinner's D1 uses T-Head cores with the same non-standard extensions.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Link: https://lore.kernel.org/all/ab38f6af-cb68-a918-1a63-2e7c927a8ffc@infradead.org/
Fixes: da47ce003963 ("riscv: Add the T-HEAD SoC family Kconfig option")
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
---
CC: Paul Walmsley <paul.walmsley@sifive.com>
CC: Palmer Dabbelt <palmer@dabbelt.com>
CC: Albert Ou <aou@eecs.berkeley.edu>
CC: Jisheng Zhang <jszhang@kernel.org>
CC: linux-riscv@lists.infradead.org
CC: linux-kernel@vger.kernel.org
---
 arch/riscv/Kconfig.socs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index ce10a38dff37..6833d01e2e70 100644
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -43,6 +43,7 @@ config ARCH_SUNXI
 
 config ARCH_THEAD
 	bool "T-HEAD RISC-V SoCs"
+	depends on MMU && !XIP_KERNEL
 	select ERRATA_THEAD
 	help
 	  This enables support for the RISC-V based T-HEAD SoCs.
-- 
2.39.2


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