On ARM platforms, the maximum size of the address space is limited to 32-bits as defined in arm_def.h. In order to access DRAM2, which is defined beyond the 32-bit address space, the maximum address space is increased to 36-bits in AArch64. It is possible to increase the virtual space for AArch32, but it is more difficult and not supported for now. NOTE - the actual maximum memory address space is platform dependent and is checked at run-time by querying the PARange field in the ID_AA64MMFR0_EL1 register. Change-Id: I6cb05c78a63b1fed96db9a9773faca04a5b93d67 Signed-off-by: Roberto Vargas <roberto.vargas@arm.com> |
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aarch64 | ||
arm_config.h | ||
arm_def.h | ||
arm_sip_svc.h | ||
arm_xlat_tables.h | ||
plat_arm.h |