linux/arch/riscv/Kconfig.socs
Heiko Stuebner e64f737ad7
riscv: integrate alternatives better into the main architecture
Right now the alternatives need to be explicitly enabled and
erratas are limited to SiFive ones.

We want to use alternatives not only for patching soc erratas,
but in the future also for handling different behaviour depending
on the existence of future extensions.

So move the core alternatives over to the kernel subdirectory
and move the CONFIG_RISCV_ALTERNATIVE to be a hidden symbol
which we expect relevant erratas and extensions to just select
if needed.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Philipp Tomsich <philipp.tomsich@vrull.eu>
Link: https://lore.kernel.org/r/20220511192921.2223629-2-heiko@sntech.de
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-05-11 21:36:31 -07:00

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menu "SoC selection"
config SOC_MICROCHIP_POLARFIRE
bool "Microchip PolarFire SoCs"
select MCHP_CLK_MPFS
select SIFIVE_PLIC
help
This enables support for Microchip PolarFire SoC platforms.
config SOC_SIFIVE
bool "SiFive SoCs"
select SERIAL_SIFIVE if TTY
select SERIAL_SIFIVE_CONSOLE if TTY
select CLK_SIFIVE
select CLK_SIFIVE_PRCI
select SIFIVE_PLIC
select ERRATA_SIFIVE if !XIP_KERNEL
help
This enables support for SiFive SoC platform hardware.
config SOC_STARFIVE
bool "StarFive SoCs"
select PINCTRL
select RESET_CONTROLLER
select SIFIVE_PLIC
help
This enables support for StarFive SoC platform hardware.
config SOC_VIRT
bool "QEMU Virt Machine"
select CLINT_TIMER if RISCV_M_MODE
select POWER_RESET
select POWER_RESET_SYSCON
select POWER_RESET_SYSCON_POWEROFF
select GOLDFISH
select RTC_DRV_GOLDFISH if RTC_CLASS
select SIFIVE_PLIC
select PM_GENERIC_DOMAINS if PM
select PM_GENERIC_DOMAINS_OF if PM && OF
select RISCV_SBI_CPUIDLE if CPU_IDLE
help
This enables support for QEMU Virt Machine.
config SOC_CANAAN
bool "Canaan Kendryte K210 SoC"
depends on !MMU
select CLINT_TIMER if RISCV_M_MODE
select SERIAL_SIFIVE if TTY
select SERIAL_SIFIVE_CONSOLE if TTY
select SIFIVE_PLIC
select ARCH_HAS_RESET_CONTROLLER
select PINCTRL
select COMMON_CLK
select COMMON_CLK_K210
help
This enables support for Canaan Kendryte K210 SoC platform hardware.
if SOC_CANAAN
config SOC_CANAAN_K210_DTB_BUILTIN
bool "Builtin device tree for the Canaan Kendryte K210"
depends on SOC_CANAAN
default y
select OF
select BUILTIN_DTB
help
Build a device tree for the Kendryte K210 into the Linux image.
This option should be selected if no bootloader is being used.
If unsure, say Y.
config SOC_CANAAN_K210_DTB_SOURCE
string "Source file for the Canaan Kendryte K210 builtin DTB"
depends on SOC_CANAAN
depends on SOC_CANAAN_K210_DTB_BUILTIN
default "k210_generic"
help
Base name (without suffix, relative to arch/riscv/boot/dts/canaan)
for the DTS file that will be used to produce the DTB linked into the
kernel.
endif
endmenu