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The TTBR0_EL1 holds the base address of translation table 0, and information about the memory it occupies. This is one of the translation tables for the stage 1 translation of memory accesses from modes other than Hyp mode.
TTBR0_EL1 is 64-bit register.
An ASID for the translation table base address. The TCR_EL1.A1 field selects either TTBR0_EL1.ASID or TTBR1_EL1.ASID.
Translation table base address, bits[47:x]. Bits [x-1:1] are RES0.
x is based on the value of TCR_EL1.T0SZ, the stage of translation, and the memory translation granule size.
For instructions on how to calculate it, see the Arm® Architecture Reference Manual Armv8, for Armv8-A architecture profile.
The value of x determines the required alignment of the translation table, that must be aligned to 2x bytes.
If bits [x-1:1] are not all zero, this is a misaligned translation table base address. Its effects are CONSTRAINED UNPREDICTABLE, where bits [x-1:1] are treated as if all the bits are zero. The value read back from those bits is the value written.
Common not Private. The possible values are:
|CnP is not supported.|
CnP is supported.