[edk2-devel] [PATCH 6/7] ArmPkg: handle SVE/SME in ArmCpuInfo
Marcin Juszkiewicz
marcin.juszkiewicz at linaro.org
Thu May 4 14:24:39 UTC 2023
If cpu supports SVE or SME then display information of supported
features.
Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz at linaro.org>
---
ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c | 344 +++++++++++++++++++++
1 file changed, 344 insertions(+)
diff --git a/ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c b/ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c
index c2ed6b93d968..ab1cc70933e1 100644
--- a/ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c
+++ b/ArmPkg/Application/ArmCpuInfo/ArmCpuInfo.c
@@ -2353,6 +2353,333 @@ HandleAa64Pfr1 (
// 63:40 are reserved
}
+/**
+ Handle ID_AA64SMFR0_EL1 system register.
+
+ @param[in] Aa64Smfr0, value of ID_AA64SMFR0_EL1 system register
+**/
+VOID
+HandleAa64Smfr0 (
+ CONST UINT64 Aa64Smfr0
+ )
+{
+ UINT64 Value;
+ STATIC CONST CHAR8 RegName[] = "SMFR0";
+ CONST CHAR8 *Description;
+ CONST CHAR8 *Bits;
+
+ // 31:0 reserved
+
+ Bits = " 32";
+ Value = (Aa64Smfr0 >> 32) & 0x1;
+ switch (Value) {
+ case 0:
+ Description = "SME F32F32 not implemented.";
+ break;
+ case 1:
+ Description = "SME F32F32 implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ // 33 reserved
+
+ Bits = " 34";
+ Value = (Aa64Smfr0 >> 34) & 0x1;
+ switch (Value) {
+ case 0:
+ Description = "SME B16F32 not implemented.";
+ break;
+ case 1:
+ Description = "SME B16F32 implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ Bits = " 35";
+ Value = (Aa64Smfr0 >> 35) & 0x1;
+ switch (Value) {
+ case 0:
+ Description = "SME F16F32 not implemented.";
+ break;
+ case 1:
+ Description = "SME F16F32 implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ Bits = "39:36";
+ Value = (Aa64Smfr0 >> 36) & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "SME I8I32 not implemented.";
+ break;
+ case b1111:
+ Description = "SME I8I32 implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ // 47:40 reserved
+
+ Bits = " 48";
+ Value = (Aa64Smfr0 >> 48) & 0x1;
+ switch (Value) {
+ case 0:
+ Description = "SME F64F64 not implemented.";
+ break;
+ case 1:
+ Description = "SME F64F64 implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ // 51:49 reserved
+
+ Bits = "55:52";
+ Value = (Aa64Smfr0 >> 52) & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "SME I16I64 not implemented";
+ break;
+ case b1111:
+ Description = "SME I16I64 implemented";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ Bits = "59:56";
+ Value = (Aa64Smfr0 >> 56) & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "Mandatory SME instructions are implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ // 62:60 reserved
+
+ Bits = " 63";
+ Value = (Aa64Smfr0 >> 63) & 0x1;
+ switch (Value) {
+ case 0:
+ Description = "SME_FA64 not implemented.";
+ break;
+ case 1:
+ Description = "SME_FA64 implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+}
+
+/**
+ Handle ID_AA64ZFR0_EL1 system register.
+
+ @param[in] Aa64Zfr0, value of ID_AA64ZFR0_EL1 system register
+**/
+VOID
+HandleAa64Zfr0 (
+ CONST UINT64 Aa64Zfr0
+ )
+{
+ UINT64 Value;
+ STATIC CONST CHAR8 RegName[] = "ZFR0";
+ CONST CHAR8 *Description;
+ CONST CHAR8 *Bits;
+
+ Bits = "3:0 ";
+ Value = Aa64Zfr0 & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "FEAT_SVE implemented.";
+ break;
+ case b0001:
+ Description = "FEAT_SVE2 implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ Bits = "7:4 ";
+ Value = (Aa64Zfr0 >> 4) & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "FEAT_SVE_AES not implemented.";
+ break;
+ case b0001:
+ Description = "FEAT_SVE_AES implemented.";
+ break;
+ case b0010:
+ Description = "FEAT_SVE_AES and FEAT_SVE_PMULL128 implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ // 15:8 reserved
+
+ Bits = "19:16";
+ Value = (Aa64Zfr0 >> 16) & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "FEAT_SVE_BitPerm not implemented.";
+ break;
+ case b0001:
+ Description = "FEAT_SVE_BitPerm implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ Bits = "23:20";
+ Value = (Aa64Zfr0 >> 20) & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "SVE BFloat16 not implemented.";
+ break;
+ case b0001:
+ Description = "FEAT_BF16 SVE implemented.";
+ break;
+ case b0010:
+ Description = "FEAT_EBF16 SVE implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ // 31:24 reserved
+
+ Bits = "35:32";
+ Value = (Aa64Zfr0 >> 32) & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "FEAT_SVE_SHA3 not implemented.";
+ break;
+ case b0001:
+ Description = "FEAT_SVE_SHA3 implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ // 39:36 reserved
+
+ Bits = "43:40";
+ Value = (Aa64Zfr0 >> 40) & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "FEAT_SVE_SM4 not implemented.";
+ break;
+ case b0001:
+ Description = "FEAT_SVE_SM4 implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ Bits = "47:44";
+ Value = (Aa64Zfr0 >> 44) & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "FEAT_I8MM SVE not implemented.";
+ break;
+ case b0001:
+ Description = "FEAT_I8MM SVE implemented.";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ // 51:48 reserved
+
+ Bits = "55:52";
+ Value = (Aa64Zfr0 >> 52) & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "FEAT_F32MM SVE not implemented";
+ break;
+ case b0001:
+ Description = "FEAT_F32MM SVE implemented";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ Bits = "59:56";
+ Value = (Aa64Zfr0 >> 56) & 0xf;
+ switch (Value) {
+ case b0000:
+ Description = "FEAT_F64MM SVE not implemented";
+ break;
+ case b0001:
+ Description = "FEAT_F64MM SVE implemented";
+ break;
+ default:
+ Description = "unknown";
+ break;
+ }
+
+ PrintValues (RegName, Bits, Value, Description);
+
+ // 63:60 reserved
+}
+
/**
The user Entry Point for Application. The user code starts with this function
as the real entry point for the application.
@@ -2380,6 +2707,8 @@ UefiMain (
UINT64 Aa64Mmfr2;
UINT64 Aa64Pfr0;
UINT64 Aa64Pfr1;
+ UINT64 Aa64Smfr0;
+ UINT64 Aa64Zfr0;
Aa64Dfr0 = ArmReadIdAA64Dfr0 ();
Aa64Isar0 = ArmReadIdAA64Isar0 ();
@@ -2390,6 +2719,8 @@ UefiMain (
Aa64Mmfr2 = ArmReadIdAA64Mmfr2 ();
Aa64Pfr0 = ArmReadIdAA64Pfr0 ();
Aa64Pfr1 = ArmReadIdAA64Pfr1 ();
+ Aa64Smfr0 = ArmReadIdAA64Smfr0 ();
+ Aa64Zfr0 = ArmReadIdAA64Zfr0 ();
AsciiPrint ("ID_AA64MMFR0_EL1 = 0x%016lx\n", Aa64Mmfr0);
AsciiPrint ("ID_AA64MMFR1_EL1 = 0x%016lx\n", Aa64Mmfr1);
@@ -2400,6 +2731,8 @@ UefiMain (
AsciiPrint ("ID_AA64ISAR1_EL1 = 0x%016lx\n", Aa64Isar1);
AsciiPrint ("ID_AA64ISAR2_EL1 = 0x%016lx\n", Aa64Isar2);
AsciiPrint ("ID_AA64DFR0_EL1 = 0x%016lx\n", Aa64Dfr0);
+ AsciiPrint ("ID_AA64SMFR0_EL1 = 0x%016lx\n", Aa64Smfr0);
+ AsciiPrint ("ID_AA64ZFR0_EL1 = 0x%016lx\n", Aa64Zfr0);
AsciiPrint ("\n");
PrintText ("Register", "Bits", "Value", "Feature");
@@ -2440,6 +2773,17 @@ UefiMain (
}
HandleAa64Dfr0 (Aa64Dfr0);
+ PrintSpacer ();
+
+ if (Aa64Smfr0) {
+ HandleAa64Smfr0 (Aa64Smfr0);
+ PrintSpacer ();
+ }
+
+ if (Aa64Zfr0) {
+ HandleAa64Zfr0 (Aa64Zfr0);
+ PrintSpacer ();
+ }
return EFI_SUCCESS;
}
--
2.40.1
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