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| author | Palmer Dabbelt <palmer@sifive.com> | 2018-10-22 17:38:26 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@sifive.com> | 2018-10-22 17:38:26 -0700 |
| commit | 4e4101cfefd382176b05356c5ef112561ae10384 (patch) | |
| tree | b60173dc3824f7da801b33d5d1d172c4a6f9e41f /arch/riscv/Kconfig | |
| parent | aef53f97b505ff94190ce3a06dcd0ded6cf5c0ca (diff) | |
| parent | 9411ec60c23d868124d9c1b1d491937aebe07afa (diff) | |
| download | linux-4e4101cfefd382176b05356c5ef112561ae10384.tar.gz linux-4e4101cfefd382176b05356c5ef112561ae10384.tar.bz2 linux-4e4101cfefd382176b05356c5ef112561ae10384.zip | |
riscv: Add support to no-FPU systems
This patchset adds an option, CONFIG_FPU, to enable/disable floating-
point support within the kernel. The kernel's new behavior will be as
follows:
* with CONFIG_FPU=y
All FPU codes are reserved. If no FPU is found during booting, a
global flag will be set, and those functions will be bypassed with
condition check to that flag.
* with CONFIG_FPU=n
No floating-point instructions in kernel and all related settings
are excluded.
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 6c8329beb936..4198759f6798 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -210,6 +210,15 @@ config RISCV_BASE_PMU endmenu +config FPU + bool "FPU support" + default y + help + Say N here if you want to disable all floating-point related procedure + in the kernel. + + If you don't know what to do here, say Y. + endmenu menu "Kernel features" |