This is almost a complete rewrite from the old hardware_gen.py.
It separates the 'parse DT' stage from the 'generate output'
devices more strictly, and is hopefully easier to understand and
easier to extend.
We also no longer generate the 'devices' list (in YAML)
or the dev_p_regs array (in C), as the kernel will implicitly
expose all non-RAM untypeds as devices.
On exynos5 platforms the Arm Generic timer is available and is used for
MCS, but the mct.h is still used as the mct device needs to be
configured to implement the Arm Generic timer. mct.h is a common header
for register definitions while exynos4412-mct.h is used for implementing
timer functions on the exynos4 where the mct doesn't support being the
Arm generic timer.
Also remove misplaced initGenericTimer() declaration.
When SMP is enabled, the sscratch register is used to
contain the per-core kernel stack instead of the current
running thread. We get the current running thread from the
top of the kernel stack.
- Remove Remap function from seL4 API for arm, x86, riscv and the
respective invocation implementation.
- Update Map as replacement for Remap
- Update manual
This allows a change of rights if the frame being mapped is already
mapped in at the given vaddr. To map a page to a different address,
unmap it first.
Co-authored-by: Hesham Almatary <hesham.almatary@data61.csiro.au>
Co-authored-by: Anna Lyons <Anna.Lyons@data61.csiro.au>
Co-authored-by: Victor Phan <Victor.Phan@data61.csiro.au>
Co-authored-by: Kent McLeod <Kent.Mcleod@data61.csiro.au>
The ia32 kernel is supposed to pass through type 1 memory that is
outside of the kernel window as device untyped. In a previous refactor
this memory stopped getting created as untypeds. This behaviour is fixed
by pre-clamping the memory before being given to the free region list.
Prior to this commit the kernel would always trigger a full reschedule
on setPriority. This change allows the kernel to attempt a direct
switch, avoiding invoking the scheduler.
- Move location of setPriority call to after any cap deletion
This makes the proof easier as setPriority now changes
ksSchedulerAction, which is required to be ResumeCurrentThread or
ChooseNewThread by the cap delete functions.
- Update to attempt direct switch on set prio.
