[v3,1/4] RISC-V: Add Bitmanip/Scalar Crypto parsing from DT
Commit Message
From: "Hongren (Zenithal) Zheng" <i@zenithal.me>
Parse Zb/Zk related string from DT and output them to cpuinfo.
It is worth noting that the Scalar Crypto extension defines "zk" as a
shorthand for the Zkn, Zkr and Zkt extensions. Since the Zkn one also
implies the Zbkb, Zbkc and Zbkx extensions, simply passing the valid
"zk" extension name through a DT will enable all of the Zbkb, Zbkc,
Zbkx, Zkn, Zkr and Zkt extensions.
Also, since there currently is no mechanism to merge all enabled
extensions, the generated cpuinfo output could be relatively large.
For example, setting the "riscv,isa" DT property to "rv64imafdc_zk_zks"
will generate the following cpuinfo output:
"rv64imafdc_zbkb_zbkc_zbkx_zknd_zkne_zknh_zkr_zksed_zksh_zkt".
Tested-by: Jiatai He <jiatai2021@iscas.ac.cn>
Reviewed-by: Evan Green <evan@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Samuel Ortiz <sameo@rivosinc.com>
Signed-off-by: Hongren (Zenithal) Zheng <i@zenithal.me>
---
arch/riscv/include/asm/hwcap.h | 11 +++++++++++
arch/riscv/kernel/cpu.c | 11 +++++++++++
arch/riscv/kernel/cpufeature.c | 30 ++++++++++++++++++++++++++++++
3 files changed, 52 insertions(+)
Comments
Am Sonntag, 9. Juli 2023, 13:55:43 CEST schrieb Samuel Ortiz:
> From: "Hongren (Zenithal) Zheng" <i@zenithal.me>
>
> Parse Zb/Zk related string from DT and output them to cpuinfo.
>
> It is worth noting that the Scalar Crypto extension defines "zk" as a
> shorthand for the Zkn, Zkr and Zkt extensions. Since the Zkn one also
> implies the Zbkb, Zbkc and Zbkx extensions, simply passing the valid
> "zk" extension name through a DT will enable all of the Zbkb, Zbkc,
> Zbkx, Zkn, Zkr and Zkt extensions.
>
> Also, since there currently is no mechanism to merge all enabled
> extensions, the generated cpuinfo output could be relatively large.
> For example, setting the "riscv,isa" DT property to "rv64imafdc_zk_zks"
> will generate the following cpuinfo output:
> "rv64imafdc_zbkb_zbkc_zbkx_zknd_zkne_zknh_zkr_zksed_zksh_zkt".
>
> Tested-by: Jiatai He <jiatai2021@iscas.ac.cn>
> Reviewed-by: Evan Green <evan@rivosinc.com>
> Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
> Signed-off-by: Samuel Ortiz <sameo@rivosinc.com>
> Signed-off-by: Hongren (Zenithal) Zheng <i@zenithal.me>
Signed-off-by lines should be the other way around (Hongren Zhen first,
then yours), otherwise
Reviewed-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Tested-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Am Sonntag, 9. Juli 2023, 13:55:43 CEST schrieb Samuel Ortiz:
> From: "Hongren (Zenithal) Zheng" <i@zenithal.me>
>
> Parse Zb/Zk related string from DT and output them to cpuinfo.
>
> It is worth noting that the Scalar Crypto extension defines "zk" as a
> shorthand for the Zkn, Zkr and Zkt extensions. Since the Zkn one also
> implies the Zbkb, Zbkc and Zbkx extensions, simply passing the valid
> "zk" extension name through a DT will enable all of the Zbkb, Zbkc,
> Zbkx, Zkn, Zkr and Zkt extensions.
>
> Also, since there currently is no mechanism to merge all enabled
> extensions, the generated cpuinfo output could be relatively large.
> For example, setting the "riscv,isa" DT property to "rv64imafdc_zk_zks"
> will generate the following cpuinfo output:
> "rv64imafdc_zbkb_zbkc_zbkx_zknd_zkne_zknh_zkr_zksed_zksh_zkt".
>
> Tested-by: Jiatai He <jiatai2021@iscas.ac.cn>
> Reviewed-by: Evan Green <evan@rivosinc.com>
> Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
> Signed-off-by: Samuel Ortiz <sameo@rivosinc.com>
> Signed-off-by: Hongren (Zenithal) Zheng <i@zenithal.me>
Signed-off-by lines should be the other way around (Hongren Zhen first,
then yours), otherwise
Reviewed-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Tested-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
@@ -53,6 +53,17 @@
#define RISCV_ISA_EXT_ZICSR 40
#define RISCV_ISA_EXT_ZIFENCEI 41
#define RISCV_ISA_EXT_ZIHPM 42
+#define RISCV_ISA_EXT_ZBC 43
+#define RISCV_ISA_EXT_ZBKB 44
+#define RISCV_ISA_EXT_ZBKC 45
+#define RISCV_ISA_EXT_ZBKX 46
+#define RISCV_ISA_EXT_ZKND 47
+#define RISCV_ISA_EXT_ZKNE 48
+#define RISCV_ISA_EXT_ZKNH 49
+#define RISCV_ISA_EXT_ZKR 50
+#define RISCV_ISA_EXT_ZKSED 51
+#define RISCV_ISA_EXT_ZKSH 52
+#define RISCV_ISA_EXT_ZKT 53
#define RISCV_ISA_EXT_MAX 64
#define RISCV_ISA_EXT_NAME_LEN_MAX 32
@@ -215,7 +215,18 @@ static struct riscv_isa_ext_data isa_ext_arr[] = {
__RISCV_ISA_EXT_DATA(zihpm, RISCV_ISA_EXT_ZIHPM),
__RISCV_ISA_EXT_DATA(zba, RISCV_ISA_EXT_ZBA),
__RISCV_ISA_EXT_DATA(zbb, RISCV_ISA_EXT_ZBB),
+ __RISCV_ISA_EXT_DATA(zbc, RISCV_ISA_EXT_ZBC),
+ __RISCV_ISA_EXT_DATA(zbkb, RISCV_ISA_EXT_ZBKB),
+ __RISCV_ISA_EXT_DATA(zbkc, RISCV_ISA_EXT_ZBKC),
+ __RISCV_ISA_EXT_DATA(zbkx, RISCV_ISA_EXT_ZBKX),
__RISCV_ISA_EXT_DATA(zbs, RISCV_ISA_EXT_ZBS),
+ __RISCV_ISA_EXT_DATA(zknd, RISCV_ISA_EXT_ZKND),
+ __RISCV_ISA_EXT_DATA(zkne, RISCV_ISA_EXT_ZKNE),
+ __RISCV_ISA_EXT_DATA(zknh, RISCV_ISA_EXT_ZKNH),
+ __RISCV_ISA_EXT_DATA(zkr, RISCV_ISA_EXT_ZKR),
+ __RISCV_ISA_EXT_DATA(zksed, RISCV_ISA_EXT_ZKSED),
+ __RISCV_ISA_EXT_DATA(zksh, RISCV_ISA_EXT_ZKSH),
+ __RISCV_ISA_EXT_DATA(zkt, RISCV_ISA_EXT_ZKT),
__RISCV_ISA_EXT_DATA(smaia, RISCV_ISA_EXT_SMAIA),
__RISCV_ISA_EXT_DATA(ssaia, RISCV_ISA_EXT_SSAIA),
__RISCV_ISA_EXT_DATA(sscofpmf, RISCV_ISA_EXT_SSCOFPMF),
@@ -309,10 +309,40 @@ void __init riscv_fill_hwcap(void)
SET_ISA_EXT_MAP("svpbmt", RISCV_ISA_EXT_SVPBMT);
SET_ISA_EXT_MAP("zba", RISCV_ISA_EXT_ZBA);
SET_ISA_EXT_MAP("zbb", RISCV_ISA_EXT_ZBB);
+ SET_ISA_EXT_MAP("zbc", RISCV_ISA_EXT_ZBC);
+ SET_ISA_EXT_MAP("zbkb", RISCV_ISA_EXT_ZBKB);
+ SET_ISA_EXT_MAP("zbkc", RISCV_ISA_EXT_ZBKC);
+ SET_ISA_EXT_MAP("zbkx", RISCV_ISA_EXT_ZBKX);
SET_ISA_EXT_MAP("zbs", RISCV_ISA_EXT_ZBS);
SET_ISA_EXT_MAP("zicbom", RISCV_ISA_EXT_ZICBOM);
SET_ISA_EXT_MAP("zicboz", RISCV_ISA_EXT_ZICBOZ);
SET_ISA_EXT_MAP("zihintpause", RISCV_ISA_EXT_ZIHINTPAUSE);
+ SET_ISA_EXT_MAP("zk", RISCV_ISA_EXT_ZBKB);
+ SET_ISA_EXT_MAP("zk", RISCV_ISA_EXT_ZBKC);
+ SET_ISA_EXT_MAP("zk", RISCV_ISA_EXT_ZBKX);
+ SET_ISA_EXT_MAP("zk", RISCV_ISA_EXT_ZKND);
+ SET_ISA_EXT_MAP("zk", RISCV_ISA_EXT_ZKNE);
+ SET_ISA_EXT_MAP("zk", RISCV_ISA_EXT_ZKNH);
+ SET_ISA_EXT_MAP("zk", RISCV_ISA_EXT_ZKR);
+ SET_ISA_EXT_MAP("zk", RISCV_ISA_EXT_ZKT);
+ SET_ISA_EXT_MAP("zkn", RISCV_ISA_EXT_ZBKB);
+ SET_ISA_EXT_MAP("zkn", RISCV_ISA_EXT_ZBKC);
+ SET_ISA_EXT_MAP("zkn", RISCV_ISA_EXT_ZBKX);
+ SET_ISA_EXT_MAP("zkn", RISCV_ISA_EXT_ZKND);
+ SET_ISA_EXT_MAP("zkn", RISCV_ISA_EXT_ZKNE);
+ SET_ISA_EXT_MAP("zkn", RISCV_ISA_EXT_ZKNH);
+ SET_ISA_EXT_MAP("zknd", RISCV_ISA_EXT_ZKND);
+ SET_ISA_EXT_MAP("zkne", RISCV_ISA_EXT_ZKNE);
+ SET_ISA_EXT_MAP("zknh", RISCV_ISA_EXT_ZKNH);
+ SET_ISA_EXT_MAP("zks", RISCV_ISA_EXT_ZBKB);
+ SET_ISA_EXT_MAP("zks", RISCV_ISA_EXT_ZBKC);
+ SET_ISA_EXT_MAP("zks", RISCV_ISA_EXT_ZBKX);
+ SET_ISA_EXT_MAP("zks", RISCV_ISA_EXT_ZKSED);
+ SET_ISA_EXT_MAP("zks", RISCV_ISA_EXT_ZKSH);
+ SET_ISA_EXT_MAP("zksed", RISCV_ISA_EXT_ZKSED);
+ SET_ISA_EXT_MAP("zksh", RISCV_ISA_EXT_ZKSH);
+ SET_ISA_EXT_MAP("zkr", RISCV_ISA_EXT_ZKR);
+ SET_ISA_EXT_MAP("zkt", RISCV_ISA_EXT_ZKT);
}
#undef SET_ISA_EXT_MAP
}