Commit eded8bc6 authored by Damien Le Moal's avatar Damien Le Moal Committed by Paul Walmsley
Browse files

riscv: don't allow selecting SBI based drivers for M-mode 



When running in M-mode we can't use SBI based drivers.  Add a new
CONFIG_RISCV_SBI that drivers that do SBI calls can depend on
instead.

Signed-off-by: default avatarDamien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: default avatarAnup Patel <anup@brainfault.org>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarPaul Walmsley <paul.walmsley@sifive.com>
parent a4c3733d

arch/riscv/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -76,6 +76,12 @@ config ARCH_MMAP_RND_BITS_MAX 
config RISCV_M_MODE

	bool



# set if we are running in S-mode and can use SBI calls

config RISCV_SBI

	bool

	depends on !RISCV_M_MODE

	default y



config MMU

	def_bool y

drivers/tty/hvc/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -89,7 +89,7 @@ config HVC_DCC 


config HVC_RISCV_SBI

	bool "RISC-V SBI console support"

	depends on RISCV

	depends on RISCV_SBI

	select HVC_DRIVER

	help

	  This enables support for console output via RISC-V SBI calls, which

drivers/tty/serial/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -88,7 +88,7 @@ config SERIAL_EARLYCON_ARM_SEMIHOST 


config SERIAL_EARLYCON_RISCV_SBI

	bool "Early console using RISC-V SBI"

	depends on RISCV

	depends on RISCV_SBI

	select SERIAL_CORE

	select SERIAL_CORE_CONSOLE

	select SERIAL_EARLYCON

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