From: Anshuman Khandual anshuman.khandual@arm.com
maillist inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8EC9K CVE: NA
Reference: https://lore.kernel.org/linux-arm-kernel/20240613061731.3109448-1-anshuman.k...
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This patch adds definitions related to the Branch Record Buffer Extension (BRBE) as per ARM DDI 0487K.a. These will be used by KVM and a BRBE driver in subsequent patches.
Some existing BRBE definitions in asm/sysreg.h are replaced with equivalent generated definitions.
Cc: Catalin Marinas catalin.marinas@arm.com Cc: Will Deacon will@kernel.org Cc: Marc Zyngier maz@kernel.org Cc: Mark Rutland mark.rutland@arm.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Mark Rutland mark.rutland@arm.com Reviewed-by: Mark Brown broonie@kernel.org Signed-off-by: Anshuman Khandual anshuman.khandual@arm.com Signed-off-by: Junhao He hejunhao3@huawei.com --- arch/arm64/include/asm/sysreg.h | 14 ++-- arch/arm64/tools/sysreg | 131 ++++++++++++++++++++++++++++++++ 2 files changed, 137 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 5e036fb4a4bf..faba73f948b1 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -197,16 +197,8 @@ #define SYS_DBGVCR32_EL2 sys_reg(2, 4, 0, 7, 0)
#define SYS_BRBINF_EL1(n) sys_reg(2, 1, 8, (n & 15), (((n & 16) >> 2) | 0)) -#define SYS_BRBINFINJ_EL1 sys_reg(2, 1, 9, 1, 0) #define SYS_BRBSRC_EL1(n) sys_reg(2, 1, 8, (n & 15), (((n & 16) >> 2) | 1)) -#define SYS_BRBSRCINJ_EL1 sys_reg(2, 1, 9, 1, 1) #define SYS_BRBTGT_EL1(n) sys_reg(2, 1, 8, (n & 15), (((n & 16) >> 2) | 2)) -#define SYS_BRBTGTINJ_EL1 sys_reg(2, 1, 9, 1, 2) -#define SYS_BRBTS_EL1 sys_reg(2, 1, 9, 0, 2) - -#define SYS_BRBCR_EL1 sys_reg(2, 1, 9, 0, 0) -#define SYS_BRBFCR_EL1 sys_reg(2, 1, 9, 0, 1) -#define SYS_BRBIDR0_EL1 sys_reg(2, 1, 9, 2, 0)
#define SYS_TRCITECR_EL1 sys_reg(3, 0, 1, 2, 3) #define SYS_TRCACATR(m) sys_reg(2, 1, 2, ((m & 7) << 1), (2 | (m >> 3))) @@ -795,6 +787,12 @@ #define OP_DVP_RCTX sys_insn(1, 3, 7, 3, 5) #define OP_CPP_RCTX sys_insn(1, 3, 7, 3, 7)
+/* + * BRBE Instructions + */ +#define BRB_IALL_INSN __emit_inst(0xd5000000 | OP_BRB_IALL | (0x1f)) +#define BRB_INJ_INSN __emit_inst(0xd5000000 | OP_BRB_INJ | (0x1f)) + /* Common SCTLR_ELx flags. */ #define SCTLR_ELx_ENTP2 (BIT(60)) #define SCTLR_ELx_DSSBS (BIT(44)) diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg index 0e7d7f327410..17286210625b 100644 --- a/arch/arm64/tools/sysreg +++ b/arch/arm64/tools/sysreg @@ -1002,6 +1002,137 @@ UnsignedEnum 3:0 BT EndEnum EndSysreg
+ +SysregFields BRBINFx_EL1 +Res0 63:47 +Field 46 CCU +Field 45:32 CC +Res0 31:18 +Field 17 LASTFAILED +Field 16 T +Res0 15:14 +Enum 13:8 TYPE + 0b000000 DIRECT_UNCOND + 0b000001 INDIRECT + 0b000010 DIRECT_LINK + 0b000011 INDIRECT_LINK + 0b000101 RET + 0b000111 ERET + 0b001000 DIRECT_COND + 0b100001 DEBUG_HALT + 0b100010 CALL + 0b100011 TRAP + 0b100100 SERROR + 0b100110 INSN_DEBUG + 0b100111 DATA_DEBUG + 0b101010 ALIGN_FAULT + 0b101011 INSN_FAULT + 0b101100 DATA_FAULT + 0b101110 IRQ + 0b101111 FIQ + 0b110000 IMPDEF_TRAP_EL3 + 0b111001 DEBUG_EXIT +EndEnum +Enum 7:6 EL + 0b00 EL0 + 0b01 EL1 + 0b10 EL2 + 0b11 EL3 +EndEnum +Field 5 MPRED +Res0 4:2 +Enum 1:0 VALID + 0b00 NONE + 0b01 TARGET + 0b10 SOURCE + 0b11 FULL +EndEnum +EndSysregFields + +SysregFields BRBCR_ELx +Res0 63:24 +Field 23 EXCEPTION +Field 22 ERTN +Res0 21:10 +Field 9 FZPSS +Field 8 FZP +Res0 7 +Enum 6:5 TS + 0b01 VIRTUAL + 0b10 GUEST_PHYSICAL + 0b11 PHYSICAL +EndEnum +Field 4 MPRED +Field 3 CC +Res0 2 +Field 1 ExBRE +Field 0 E0BRE +EndSysregFields + +Sysreg BRBCR_EL1 2 1 9 0 0 +Fields BRBCR_ELx +EndSysreg + +Sysreg BRBFCR_EL1 2 1 9 0 1 +Res0 63:30 +Enum 29:28 BANK + 0b00 BANK_0 + 0b01 BANK_1 +EndEnum +Res0 27:23 +Field 22 CONDDIR +Field 21 DIRCALL +Field 20 INDCALL +Field 19 RTN +Field 18 INDIRECT +Field 17 DIRECT +Field 16 EnI +Res0 15:8 +Field 7 PAUSED +Field 6 LASTFAILED +Res0 5:0 +EndSysreg + +Sysreg BRBTS_EL1 2 1 9 0 2 +Field 63:0 TS +EndSysreg + +Sysreg BRBINFINJ_EL1 2 1 9 1 0 +Fields BRBINFx_EL1 +EndSysreg + +Sysreg BRBSRCINJ_EL1 2 1 9 1 1 +Field 63:0 ADDRESS +EndSysreg + +Sysreg BRBTGTINJ_EL1 2 1 9 1 2 +Field 63:0 ADDRESS +EndSysreg + +Sysreg BRBIDR0_EL1 2 1 9 2 0 +Res0 63:16 +Enum 15:12 CC + 0b0101 20_BIT +EndEnum +Enum 11:8 FORMAT + 0b0000 FORMAT_0 +EndEnum +Enum 7:0 NUMREC + 0b00001000 8 + 0b00010000 16 + 0b00100000 32 + 0b01000000 64 +EndEnum +EndSysreg + +Sysreg BRBCR_EL2 2 4 9 0 0 +Fields BRBCR_ELx +EndSysreg + +Sysreg BRBCR_EL12 2 5 9 0 0 +Fields BRBCR_ELx +EndSysreg + Sysreg ID_AA64ZFR0_EL1 3 0 0 4 4 Res0 63:60 UnsignedEnum 59:56 F64MM