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6 commits

Author SHA1 Message Date
Ben Wiederhake
9a7b3c145f Everywhere: Change all XXX into FIXME or remove as appropriate 2023-02-15 23:33:25 +01:00
konrad
5791072280 Kernel: Detect Aarch64 virtual address bit width with CPU ID registers 2023-01-18 22:58:42 +01:00
konrad
401fc6afae Kernel: Detect Aarch64 physical address bit width with CPU ID registers 2023-01-18 22:58:42 +01:00
konrad
66c65f6e2c Kernel: Add and use accessors to read from Aarch64 CPU ID registers
Following registers accessors are updated and put in use:
* ID_AA64ISAR0_EL1, Instruction Set Attribute Register 0

Accessors for following registers are added and put in use:
* ID_AA64ISAR1_EL1, Instruction Set Attribute Register 1
* ID_AA64ISAR2_EL1, Instruction Set Attribute Register 2
* ID_AA64MMFR1_EL1, AArch64 Memory Model Feature Register 1
* ID_AA64MMFR2_EL1, AArch64 Memory Model Feature Register 2
* ID_AA64MMFR3_EL1, AArch64 Memory Model Feature Register 3
* ID_AA64MMFR4_EL1, AArch64 Memory Model Feature Register 4
* ID_AA64PFR0_EL1, AArch64 Processor Feature Register 0
* ID_AA64PFR1_EL1, AArch64 Processor Feature Register 1
* ID_AA64PFR2_EL1, AArch64 Processor Feature Register 2
* ID_AA64ZFR0_EL1, AArch64 SVE Feature ID register 0
* ID_AA64SMFR0_EL1, AArch64 SME Feature ID register 0
* ID_AA64DFR0_EL1, AArch64 Debug Feature Register 0
* ID_AA64DFR1_EL1, AArch64 Debug Feature Register 1

Additionally, there are few CPU features detected with
* TCR_EL1, Translation Control Register

but detection mechanism using it (for LPA/LPA2) is probably wrong as
this is control register, not a id register, and needs further work.

Finally, following registers are provided. Former one is already used,
while latter is given for future use:
* MIDR_EL1, Main ID Register
* AIDR_EL1, Auxiliary ID Register
2023-01-18 22:58:42 +01:00
konrad
97dce5d001 Kernel: Add Aarch64 CPU feature detection 2023-01-18 22:58:42 +01:00
konrad
c08f059340 Kernel: Add CPUFeature enumeration for Aarch64 CPUs
Also, enumeration name & description mappings are provided along.
2023-01-18 22:58:42 +01:00