Commit Graph

3 Commits

Author SHA1 Message Date
Matthias Welwarsky 946958cb72 aarch64: fix mode switching
DCPS only allows to enter higher ELs, for lower ELs you need to
use DRPS. Also, of course the encoding differs between A64 and T32.
Both DCPS and DRPS also clobber DLR and DSPSR, which then need to be
restored on resume.

Change-Id: Ifa3dcfa94212702e57170bd59fd0bb25495fb6fd
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
2017-02-10 14:18:34 +01:00
Matthias Welwarsky 79c4c22e15 aarch64: register access rewrite
All register access is now performed through common read/write
functions, which delegate the actual register access to the
armv8_common object. armv8_common contains function pointers
to direct read and write requests to the respective low-level
functions for each PE state.

The respective read/write functions are selected on debug state
entry.

At the same time, T32 opcodes are now formatted for ITR in
dpmv8_exec_opcode() and the T32_FMTITR macro is removed from global
visibility.

Change-Id: I9eaef017c7cc9e0c531e693c534901bfdbdb842c
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
2017-02-10 14:18:34 +01:00
Matthias Welwarsky a3b9e12aec aarch64: introduce dpm extension for ARMv8
Add or move ARMv8 related dpm function to their own source module

Change-Id: Id93d50be0b8635bd40ddb2a74fe8746ff840d736
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
2017-02-10 14:01:38 +01:00