Messages in this thread Patch in this message | | | From | Christoph Hellwig <> | Subject | [PATCH 09/20] riscv: don't allow selecting SBI based drivers for M-mode | Date | Tue, 3 Sep 2019 11:32:28 +0200 |
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From: Damien Le Moal <damien.lemoal@wdc.com>
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: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de> --- arch/riscv/Kconfig | 6 ++++++ drivers/tty/hvc/Kconfig | 2 +- drivers/tty/serial/Kconfig | 2 +- 3 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index e4a4bebdbcf3..86fcf608f193 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -61,6 +61,12 @@ config RISCV 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 diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig index 4d22b911111f..4487a6b9acc8 100644 --- a/drivers/tty/hvc/Kconfig +++ b/drivers/tty/hvc/Kconfig @@ -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 diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 3083dbae35f7..530cb966092f 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -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 -- 2.20.1
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