This triggered a out of range count overflow warning when
building for RV32 (calling the macro with `ticks >> 32`)
since the truncation happened before the shift.
port_group_remove() used to return without unlocking a thread if no
matching read port is found, which is not correct. This patch adds a
call to THREAD_UNLOCK before it returns ERR_BAD_HANDLE.
Rearrange some of the cpu initialization code to be runnable on each cpu
as they come up. Complete the 64bit bootstrap mechanism and call into C
code.
Makes it as far as trying to reschedule via an IPI. Need to implement
local apic based IPI mechanism.
It's getting too hard to maintain a single layout that works with both,
so go ahead and split it. Also redo the layout so it should be usable
with user space and syscall and sysenter instructions from either mode.
I hadn't noticed this before, but you can directly reference a global
variable in a load/store in assembly, which combines a lla + ld/sd into
a 2 instruction pair instead of 3 due to the 12 bit offset provided in
the load/store.
This fixes a problem if the text segment gets larger than ~1MB where the
raw jal instruction cannot reach. Using 'call' or 'tail' allows the
assembler to emit a 2 instruction sequence that the linker later
relaxes if it can.
When dropping from EL2 (or EL3), load vmpidr_el2 and vpidr_el2 with the
correct values to make sure EL1 sees the 'real' mpidr_el1 and midr_el1.
Though in most cases they're already configured by whatever firmware ran
before, there's no actual guarantee that it is, and it may be full of
random garbage.
This change introduces $LK_ROOT/toolchain as an official installation
directory for toolchains, as well as a new script for conveniently
installing them there (versus manual GETs + untarring).
getting_started.md is updated to suggest its use.
On mac qemu, trying to use the physical timer does not seem to work, but
really the virtual timer is what you should be using most of the time,
especially when running under emulation.
This change updates the `help` console command to list the available
commands alphabetically, but only when we're not panicking. This makes
`help`'s helping more helpful.
Move common logic into a default routine in platform/power that other
platforms can reuse to implement the general default shutdown logic.
Add helper routines to print the cause.
Refactor the platforms that had substantial halt logic to reuse the
default implementation.
Initialize the uart by passing in the base and irq, as well as a flag
specifying if it's the debug uart and should directly put data into the
console buffer (if present).
