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| author |  Marc Zyngier <maz@kernel.org>
| 2023-01-12 11:38:46 +0900 |
|---|---|---|
| committer |  Oliver Upton <oliver.upton@linux.dev>
| 2023-01-12 21:07:43 +0000 |
| commit | e2c0b51f1c9dacc68292ce9ebffbfd4204d1ca58 (patch) | |
| tree | bf6566fea3cd957b06ca4c5667b0f0329e0adb50 /arch/arm64/tools/sysreg | |
| parent | Linux 6.2-rc3 (diff) | |
| download | linux-e2c0b51f1c9dacc68292ce9ebffbfd4204d1ca58.tar.gz linux-e2c0b51f1c9dacc68292ce9ebffbfd4204d1ca58.tar.bz2 linux-e2c0b51f1c9dacc68292ce9ebffbfd4204d1ca58.zip | |
arm64: Allow the definition of UNKNOWN system register fields
The CCSIDR_EL1 register contains an UNKNOWN field (which replaces
fields that were actually defined in previous revisions of the
architecture).
Define an 'Unkn' field type modeled after the Res0/Res1 types
to allow such description. This allows the generation of
#define CCSIDR_EL1_UNKN (UL(0) | GENMASK_ULL(31, 28))
which may have its use one day. Hopefully the architecture doesn't
add too many of those in the future.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230112023852.42012-2-akihiko.odaki@daynix.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/tools/sysreg')
| -rw-r--r-- | arch/arm64/tools/sysreg | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg index 184e58fd5631..f754265aec5f 100644 --- a/arch/arm64/tools/sysreg +++ b/arch/arm64/tools/sysreg @@ -15,6 +15,8 @@ # Res1 <msb>[:<lsb>] +# Unkn <msb>[:<lsb>] + # Field <msb>[:<lsb>] <name> # Enum <msb>[:<lsb>] <name> |