linux/arch/riscv
Greentime Hu da29dbcda4
riscv: Add cache information in AUX vector
There are no standard CSR registers to provide cache information, the
way for RISC-V is to get this information from DT. sysconf syscall
could use them to get information of cache through AUX vector.

The result of 'getconf -a|grep -i cache' as follows:
LEVEL1_ICACHE_SIZE                 32768
LEVEL1_ICACHE_ASSOC                2
LEVEL1_ICACHE_LINESIZE             64
LEVEL1_DCACHE_SIZE                 32768
LEVEL1_DCACHE_ASSOC                4
LEVEL1_DCACHE_LINESIZE             64
LEVEL2_CACHE_SIZE                  524288
LEVEL2_CACHE_ASSOC                 8
LEVEL2_CACHE_LINESIZE              64
LEVEL3_CACHE_SIZE                  4194304
LEVEL3_CACHE_ASSOC                 16
LEVEL3_CACHE_LINESIZE              64
LEVEL4_CACHE_SIZE                  0
LEVEL4_CACHE_ASSOC                 0
LEVEL4_CACHE_LINESIZE              0

Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
Signed-off-by: Zong Li <zong.li@sifive.com>
Suggested-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220913061817.22564-8-zong.li@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-10-13 11:06:56 -07:00
..
boot riscv: dts: microchip: mpfs: remove pci axi address translation property 2022-08-23 22:15:55 +01:00
configs riscv: enable Docker requirements in defconfig 2022-07-22 13:43:28 -07:00
errata riscv: implement Zicbom-based CMO instructions + the t-head variant 2022-08-10 20:49:32 -07:00
include riscv: Add cache information in AUX vector 2022-10-13 11:06:56 -07:00
kernel Merge branch 'riscv-variable_fixes_without_kvm' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux.git into fixes 2022-08-25 16:38:01 -07:00
kvm RISC-V: KVM: Support sstc extension 2022-08-12 07:43:57 -07:00
lib riscv: lib: uaccess: fix CSR_STATUS SR_SUM bit 2022-08-10 14:06:31 -07:00
mm RISC-V: fixups to work with crash tool 2022-08-11 09:04:01 -07:00
net bpf, riscv: Support riscv jit to provide bpf_line_info 2022-06-02 16:26:01 -07:00
purgatory riscv/purgatory: Omit use of bin2c 2022-08-11 09:32:34 -07:00
Kbuild riscv: move errata/ and kvm/ builds to arch/riscv/Kbuild 2022-06-01 22:26:32 -07:00
Kconfig riscv/purgatory: Omit use of bin2c 2022-08-11 09:32:34 -07:00
Kconfig.debug RISC-V: Remove EARLY_PRINTK support 2018-12-17 10:23:46 -08:00
Kconfig.erratas riscv: implement Zicbom-based CMO instructions + the t-head variant 2022-08-10 20:49:32 -07:00
Kconfig.socs riscv: Kconfig: Style cleanups 2022-06-30 19:26:16 -07:00
Makefile arch/riscv: add Zihintpause support 2022-08-11 08:03:49 -07:00