arm64: Add function to create identity mappings

At boot time, before switching to a virtual UEFI memory map, firmware
expects UEFI memory and IO regions to be identity mapped whenever
kernel makes runtime services calls. The existing early boot code
creates an identity map of kernel text/data but this is not sufficient
for UEFI. This patch adds a create_id_mapping() function which reuses
the core code of the existing create_mapping().

Signed-off-by: Mark Salter <[email protected]>
[ Fixed error message formatting (%pa). ]
Signed-off-by: Mark Rutland <[email protected]>
Signed-off-by: Leif Lindholm <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Signed-off-by: Matt Fleming <[email protected]>

0 files changed, 0 insertions, 0 deletions