fb_console_reserve_lines() in mmu_shutdown() was causing a blit from the
freed framebuffer, putting heap metadata junk at the top left corner.
Signed-off-by: Hector Martin <marcan@marcan.st>
t8103 and t600x use "asc-dram-mask" in iop-dcp-nub to mask bits out of
DMA addresses. This needs to be used in the firmware mappings
check/remap since the segments have maskable bits sets.
Fixes: 8332e24 ("dcp: Undo carnage from bad stage1 DART code")
Signed-off-by: Janne Grunau <j@jannau.net>
A bug in our DART code was wiping and aliasing page tables. Go through
the segment ranges for DCP and redo any missing mappings. If we redid
any mappings, then PMGR reset DCP so it can recover from having faulted
on the previous boot.
Signed-off-by: Hector Martin <marcan@marcan.st>
We were assuming L2 tables were always allocated consecutively at low
IOVAs. 14.5 broke this, causing all kinds of explosions.
The new code looks for the first unused L2 PT, and also checks whether
the first 2 entries are aliased to latter entries (which is what the old
code caused). If so, it clears them and reallocates them. This doesn't
undo the PT wipe from stage1 though, so downstream code has to redo any
missing mappings...
Signed-off-by: Hector Martin <marcan@marcan.st>
Use a struct instead of global variable to hold the necessary setup
information. This allows executing the setup for both sio instances.
In addition change the status to "okay" so that sio can remain disabled
if the setup fails.
Signed-off-by: Janne Grunau <j@jannau.net>
Not much to see here, most of the juice is over at:
https://github.com/eiln/avd.git
The kernel driver (m1n1.fw.avd) only really pipes the instruction stream
into the respective hardware FIFOs and then hushes the interrupt lines.
Most of the work (bitstream syntax parsing and instruction generation)
is done in the avid repo above.
I'm hoping to keep this userland-kernel separation in the very imminent
actual driver.
experiments/avd.py: Decode on the command line. Read file for usage.
experiments/avd_e.py: Decode via emulated instruction stream.
experiments/avd_f.py: Decode via Cortex-M3 firmware (for debugging).
hv/trace_avd.py: Tracer. Read file for usage.
m1n1/fw/avd/__init__.py: Driver base class (power, tunables, etc).
m1n1/fw/avd/decoder.py: Codec-specific decode logic + mini media player.
Signed-off-by: Eileen Yoon <eyn@gmx.com>
For some reason the ans node for t602x devices has an empty
"clock-gates" property. Use the MMIO address instead to determine on
which die the device is.
Fixes: 34f49a5 ("nvme: assume die 0 if clock-gates not set")
Signed-off-by: Janne Grunau <j@jannau.net>
M3+ have a new USB power controller and it works over SPMI.
However, the USB ports work (at least within m1n1) if we ignore
this and just init the phys directly.
This detects the case where we are not on an I2C based USB machine,
and initializes the phys directly.
Eventually we should support SPMI properly.
Signed-off-By: Daniel Berlin <dberlin@dberlin.org>
On m3, these previouly expected-to-be-constant fields have exciting
non-constant values. This updates adt.py to allow them to be
non-constant. The second field is also really a flags field,
though i could not tell you all the flags involved.
Signed-off-by: Daniel Berlin <dberlin@dberlin.org>
The UART base has moved from the M2 chips.
Everest settings introduce some changes to unknown registers
The MCC data has changed as well.
There is a drive-by change where I discovered what some of the unknown
HID18 bits are and documented them.
Signed-off-by: Daniel Berlin <dberlin@dberlin.org>
Right now, we assume the boot cpu is cpu0. That is not true on m3 max,
where it is CPU 4.
To figure out which CPU is the boot CPU, we check to see which CPU
is running before we start any other CPUs, and record the MPIDR/idx.
Without this patch, four issues happen on m3 max:
1. We try to start the boot CPU again, crashing it
2. We skip the real CPU 0
3. We start m1n1 again on CPU0 when we boot it
4. We enable interrupts on CPU0 because we think it's the primary CPU.
Signed-off-by: Daniel Berlin <dberlin@dberlin.org>
Only observed with dcp/dptx in linux after initialisation and reset in
m1n1. On the initial startup dcp sends two D576 (hotPlug_notify_gated)
presumendly due to state confusion due to the multiple dptx
connections.
Signed-off-by: Janne Grunau <j@jannau.net>
dcpext0 behaves like dcp on M1* devices and can sleep after display
init. This has the advantage of not breaking macOS when starting with an
initialized display.
dcpext* are according to Apple's tech specs slightly more powerful than
dcp. They are advertised as 6K at 60Hz while dcp seems to be limited to
5K at 60Hz.
Signed-off-by: Janne Grunau <j@jannau.net>
Apperently just informative as display init on M2 Ultra in m1n1 worked
as expected despite passing '0' as die number.
Signed-off-by: Janne Grunau <j@jannau.net>
Required for stage 1 loader to allow chainloaded display/dcp experiments
to start with the state left by iboot.
Signed-off-by: Janne Grunau <j@jannau.net>
Same value as the arm64 kernel build uses.
Avoids following warning:
| src/tinf/tinflate.c: In function ‘tinf_uncompress’:
| src/tinf/tinflate.c:559:5: warning: stack usage is 1712 bytes [-Wstack-usage=]
| 559 | int tinf_uncompress(void *dest, unsigned int *destLen,
Signed-off-by: Janne Grunau <j@jannau.net>
