Additional L2 tables for dart-dcp/disp0 need to be from carveout memory
so they can kept after m1n1 exist. iboot has "pt-region-X" and "l2-tt-X"
in the ADT. For DCP on M2 we have to start installing them at "vm-base"
which is 0x8_0000_0000.
This probably causes problems on M2 Pro which uses 1 << 40 as vm-base
for dart-dcp0.
Signed-off-by: Janne Grunau <j@jannau.net>
U-Boot is moving to a new set of tags to indicate devices that
should be bound/probed in early bootstrap phases. Add 'bootph-all'
tags from the new bindings such that probing the serial port
early on in U-Boot continues to work and doesn't hang the system.
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
This is in preparation for the next commit to use "framebuffer" as
compatible string for the boot framebuffer. This is in line with a
proposed change for boot framebuffer handling on Nvidia Tegra SoCs.
It will allow removing simpledrm via
drm_aperture_remove_conflicting_framebuffers().
Signed-off-by: Janne Grunau <j@jannau.net>
This is in preparation for the next commit to use "framebuffer" as
compatible string for the boot framebuffer. This is in line with a
proposed change for boot framebuffer handling on Nvidia Tegra SoCs.
It will allow removing simpledrm via
drm_aperture_remove_conflicting_framebuffers().
Signed-off-by: Janne Grunau <j@jannau.net>
The main part of function will be used to add a reserved memory region
for the framebuffer from "/vram" instead of the carveout.
Signed-off-by: Janne Grunau <j@jannau.net>
Add some minimal implementation of virtio peripherals. At the level
of on-target hypervisor code we implement the MMIO layout and
maintain virtqueues. Once a buffer is available, we break into the
host proxyclient to deal with it.
Specific device-classes of the virtio spec ought to be implemented in
the proxyclient. Here the one device implemented is 9P transport,
exporting the m1n1 source directory.
Signed-off-by: Martin Povišer <povik@cutebit.org>
This includes mapping it to 12.3.0 for compat in both DCP and GPU.
Added for machines with replaced logic boards that trigger the 12.3
bootloop issue.
Also fix the 12.5/12.6 version arrays which were wrong.
Signed-off-by: Hector Martin <marcan@marcan.st>
dcp_txt is mapped on dart-dcp and dart-dcpext so check if its reserved
memory node already exist before adding it.
Signed-off-by: Janne Grunau <j@jannau.net>
This avoids having duplicate calls for dcpext* on each mayor SoC
variant. Fixes setting firmware versions for dcpext on t8103 and t8112.
Signed-off-by: Janne Grunau <j@jannau.net>
This uses a similar algorithm to t600x, but with different constants and
exponents. The current limit also engages here, so add it, and add the
t600x one too (even though it is never hit).
Signed-off-by: Asahi Lina <lina@asahilina.net>
Devicetrees with dart-disp0 will have it disabled to avoid breaking
scanout off the boot framebuffer when booting via m1n1 version which
does not lock dart-disp0.
Signed-off-by: Janne Grunau <j@jannau.net>
DCP and disp0 need their bootloader iommu mappings maintained until
an OS driver can take over. DCP's mappings have to be kept
indefinitively since it's unknown if or how it can be restarted.
Bindings based on
https://lore.kernel.org/asahi/20220923123557.866972-1-thierry.reding@gmail.com
Signed-off-by: Janne Grunau <j@jannau.net>
This prevents older systems from resetting dart-disp0 on init when they
encounter device trees with DCP/disp nodes.
Signed-off-by: Janne Grunau <j@jannau.net>
0 is a valid and used device virtual address. Daart functions returning
device address can not use 0 to indicate errors.
Signed-off-by: Janne Grunau <j@jannau.net>
It seems unclean startup sometimes takes longer. On top of that, if we
don't do a clean shutdown in the error path, the next startup will
continue failing (we know hard-disable triggers races and crashes the
ASC).
Signed-off-by: Hector Martin <marcan@marcan.st>
"simple-bus" restricts the node names to predefined list. "soc" looks
like the most appropiate name considering the dies are M1 Max SoCs.
Signed-off-by: Janne Grunau <j@jannau.net>
This is for things that xnu hard-codes. This first one for AGX is
required to make coprocessor TLB coherency work properly...
Signed-off-by: Asahi Lina <lina@asahilina.net>
Turns out CTRR does not like working with huge pages, and just throws up
its hands in the air with an L2 address size fault if a huge page
overlaps the CTRR region.
Signed-off-by: Asahi Lina <lina@asahilina.net>
This is usually a race that happens when the Python side has just
removed a hook, but there was already a CPU core faulting on an access.
Signed-off-by: Asahi Lina <lina@asahilina.net>
This should fix the issue where console writes from another CPU in the
middle of events/etc corrupt data
Signed-off-by: Hector Martin <marcan@marcan.st>
Some of these errors are apparently sticky / write-1-to-clear, and if we
don't do this, then the SError behaves as level-triggered and just continues
to fire.
Signed-off-by: Asahi Lina <lina@asahilina.net>
Seems -v stopped being filtered (or never was?). Explicitly check boot
policy, so we don't depend on boot-args filtering directly (which can
change). -v still makes things verbose unconditionally, but the proxy
backdoor now requires that plus full SIP disable (sip0=127).
Signed-off-by: Hector Martin <marcan@marcan.st>
These are from a public Apple source that shall remain unidentified
(because it's utterly silly that they keep trying to hide these).
Signed-off-by: Hector Martin <marcan@marcan.st>
Unlike the MAC addresses Bluetooth addresses have to be stored
in little-endian byte order (see devicetree/bindings/net/bluetooth.txt)
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Depending on the chip stepping (stored in the OTP) either the blob for
beamforming or the normal calibration blob has to be used.
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Writing to the IPI register causes a trap, which sets the event...
causing every CPU to go into a tight loop of traps contended on the BHL.
We don't need to clear IPIs in WFE mode, so don't do that.
Signed-off-by: Hector Martin <marcan@marcan.st>
