| Message ID | 20181030125553.5230-6-lukas.auer@aisec.fraunhofer.de |
|---|---|
| State | Superseded |
| Delegated to: | Andes |
| Headers | show |
| Series | General fixes / cleanup for RISC-V and improvements to qemu-riscv | expand |
On Tue, Oct 30, 2018 at 8:57 PM Lukas Auer <lukas.auer@aisec.fraunhofer.de> wrote: > > Add Kconfig entries for the C (compressed instructions) and A (atomic > instructions) ISA extensions. Only the C ISA extension is selectable. > This matches the configuration in Linux. > > The Kconfig entries are not used yet. A follow-up patch will select the > appropriate compiler flags based on the Kconfig configuration. > > Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de> > --- > > Changes in v2: > - Replace the description of RISCV_ISA_C with that of the Linux kernel, > as suggested by Bin Meng > > arch/riscv/Kconfig | 11 +++++++++++ > 1 file changed, 11 insertions(+) > Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index b81e0d990a..0de77a75d7 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -38,6 +38,17 @@ config ARCH_RV64I endchoice +config RISCV_ISA_C + bool "Emit compressed instructions" + default y + help + Adds "C" to the ISA subsets that the toolchain is allowed to emit + when building U-Boot, which results in compressed instructions in the + U-Boot binary. + +config RISCV_ISA_A + def_bool y + config 32BIT bool
Add Kconfig entries for the C (compressed instructions) and A (atomic instructions) ISA extensions. Only the C ISA extension is selectable. This matches the configuration in Linux. The Kconfig entries are not used yet. A follow-up patch will select the appropriate compiler flags based on the Kconfig configuration. Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de> --- Changes in v2: - Replace the description of RISCV_ISA_C with that of the Linux kernel, as suggested by Bin Meng arch/riscv/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+)