ARM: add virt_to_idmap for interconnect aliasing
On some PAE systems (e.g. TI Keystone), memory is above the 32-bit addressible
limit, and the interconnect provides an aliased view of parts of physical
memory in the 32-bit addressible space. This alias is strictly for boot time
usage, and is not otherwise usable because of coherency limitations.
On such systems, the idmap mechanism needs to take this aliased mapping into
account. This patch introduces a virt_to_idmap() macro, which can be used on
such sub-architectures to represent the interconnect supported boot time
alias. Most other systems would leave this macro untouched, i.e., do a simply
virt_to_phys() and nothing more.
Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
3 files changed
