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

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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>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
This commit is contained in:
Damien Le Moal
2019-10-28 13:10:33 +01:00
committed by Paul Walmsley
parent a4c3733d32
commit eded8bc66a
3 changed files with 8 additions and 2 deletions
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2
drivers/tty/hvc/Kconfig
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@@ -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