tree fca74b95f921af67e2aba412d3ff697692756228
parent 88f965d720b745431a1fbe9107c561b7f381026c
author Stephen Warren <swarren@nvidia.com> 1444068540 -0600
committer Albert ARIBAUD <albert.u.boot@aribaud.net> 1447175021 +0100

armv8: allow custom MMU setup routines on ARMv8

In order for noncached_init() to operate correctly, SoCs must set up a
custom page table with fine-grained (2MiB) sections, which can be
configured from noncached_init().

This is currently performed by arch/arm/cpu/armv8/{fsl-lsch3,zynqmp}/cpu.c
by cut/pasting and re-implementing mmu_setup, enable_caches(), etc. There
are some other reasons for the duplication there though, such as enabling
icache early, and enabling dcaching earlier with a different configuration.

This change makes mmu_setup() a weak implementation, so that the MMU setup
code can be replaced without having to duplicate other code that calls it.

Signed-off-by: Stephen Warren <swarren@nvidia.com>