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ArmPkg/ArmLib: Add ArmHasEte () helper function

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Create a helper function to query whether ID_AA64MFR1_EL1 indicates
presence of the Embedded Trace Extension (ETE). This feature is only
visible in AARCH64 state.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Reviewed-by: Pierre Gondois <pierre.gondois@arm.com>
This commit is contained in:
Sami Mujawar
2023-09-22 15:35:16 +01:00
committed by mergify[bot]
parent 08431081a3
commit a671a14e63
3 changed files with 30 additions and 1 deletions
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3
ArmPkg/Include/Chipset/AArch64.h
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@@ -32,7 +32,8 @@
#define AARCH64_PFR0_GIC (0xF << 24)
// ID_AA64DFR0 - AArch64 Debug Feature Register 0 definitions
#define AARCH64_DFR0_TRBE (0xFULL << 44)
#define AARCH64_DFR0_TRACEVER (0xFULL << 4)
#define AARCH64_DFR0_TRBE (0xFULL << 44)
// SCR - Secure Configuration Register definitions
#define SCR_NS (1 << 0)