Fix fdt_find_node(). We should make sure we match the full name when
matching path components (but we do allow matches with the @unit bit).

This fixes a problem on the Milk-V Pioneer where /soc/ser

Fix fdt_find_node(). We should make sure we match the full name when
matching path components (but we do allow matches with the @unit bit).

This fixes a problem on the Milk-V Pioneer where /soc/serial@123456
accidentally match a /socket0-clocks node and we would fail to find the
serial console.

ok miod@

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Fix my email address.

Change OF_getnodebyname() such that looking up a node using just the name
without a unit number (so without the @1234 bit) works as well.

This is a re-commit of the backed out change with the endles

Change OF_getnodebyname() such that looking up a node using just the name
without a unit number (so without the @1234 bit) works as well.

This is a re-commit of the backed out change with the endless loop fixed.

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Revert previous it prevents the PinebookPro and the Rockpro64 to reach userland.

Found by kn@ and myself, ok deraadt@

Change OF_getnodebyname() such that lokking up a node using just the name
without a unit number (so without the @1234 bit) works as well.

ok patrick@, gkoehler@

prevent buffer overflow in OF_getpropint64array()
just like -r1.28 did for OF_getpropintarray()

ok kettenis@

Prevent buffer overflow in OF_getpropintarray().

ok jsg@

spelling
feedback and ok tb@ jmc@ ok ratchov@

Add OF_getpropbool(9).

ok visa@

Enter power-saving mode on POWER9 (ISA v3)

When opal(4) attaches, look in the device tree for a psscr value. In
cpu_idle_cycle(), use this psscr value and the stop instruction to
wait for the next

Enter power-saving mode on POWER9 (ISA v3)

When opal(4) attaches, look in the device tree for a psscr value. In
cpu_idle_cycle(), use this psscr value and the stop instruction to
wait for the next interrupt. In mp kernels, cpu_unidle() now sends an
interrupt. In "sysctl hw.sensors", the power and temperature sensors
from opalsens(4) may show lower values.

The cpu may exit stop at the system reset vector after losing user
registers. If so, restore some registers. For now, ignore deeper
stop states that would lose hypervisor registers.

Our mp kernel uses only the first hardware thread of each core. Take
the extra threads from the firmware and stop them forever; this may
switch the core from SMT4 to single-thread mode and increase
performance.

partly by kettenis@, ok kettenis@

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Add functions to set/add properties on an FDT node.

ok visa@

IEEE1275 (Open Firmware) defines that parameter name strings can have a
length of up to 31 characters. This limit is also present in the
flattened device tree specification/ Unfortunately this limi

IEEE1275 (Open Firmware) defines that parameter name strings can have a
length of up to 31 characters. This limit is also present in the
flattened device tree specification/ Unfortunately this limit isn't enforced
by the tooling and there are systems in the wild that use longer strings.
This includes the device trees used on POWER9 systems and has been seen
on some ARM systems as well.

So bump the buffer size from 32 bytes (31 + terminating NUL) to 64 bytes.
Centrally define OFMAXPARAM to this value (in <dev/ofw/openfirm.h>)
replacing the various OPROMMAXPARAM definition scattered around the tree
to make sure the FDT implementation of OF_nextprop() uses the same
buffer size as its consumers.

Eliminate the static buffer in various openprom(4) implementations on
FDT systems.

Makes it possible to dump the full device tree on POWER9 systems using
eeprom -p.

ok deraadt@, visa@

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Make sure fdt_get_reg() looks beyond its parent to establish the correct
#address-cells and #size-cells for the bus it sits on. This makes sure
the glass console works since the framebuffer shows up

Make sure fdt_get_reg() looks beyond its parent to establish the correct
#address-cells and #size-cells for the bus it sits on. This makes sure
the glass console works since the framebuffer shows up as a child of
/chosen which typically doesn't have these properties. This makes us
look at the root node instead.

ok patrick@

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Implement OF_getpropint64().

ok jca@, tom@, patrick@, visa@

Make OF_getnodebyname() scan its child nodes instead of its peer nodes.

This still deviates from the implementation we have on macppc, but we only
ever use OF_getnodebyname() to find child nodes in

Make OF_getnodebyname() scan its child nodes instead of its peer nodes.

This still deviates from the implementation we have on macppc, but we only
ever use OF_getnodebyname() to find child nodes in our tree.

ok tom@, visa@

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Introduce OF_getindex() API and use it to replace multiple instances of
pretty much identical code.

ok visa@

Actually make fdt_find_node() return NULL if the node couldn't be found.

ok tom@

Rename struct fdt_memory to fdt_reg to match the member name
used in the fdt attach args and the device tree.

ok kettenis@

Add interfaces to look up a device tree node by phandle.

ok patrick@, jsg@, visa@

Fix check for "name" property. Restores synthesised "name" proprties in
eeprom -p output that were lost in revision 1.13.

Make the fdt parser skip nop tokens. This is needed on some
octeon boards.

Feedback and ok kettenis@

Make sure OF_getprop() returns the proper length for a synthesised "name"
property.

From Tom Cosgrove.

Make fdt_node_property() return -1 if the requested property can't be found
such that we can distinguish between non-existing properties and zero-length
properties. This brings the FDT code in line

Make fdt_node_property() return -1 if the requested property can't be found
such that we can distinguish between non-existing properties and zero-length
properties. This brings the FDT code in line with the real OFW
implementations.

ok jsg@

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Add OF_getpropint() and OF_getpropintarray().

ok visa@, jsg@

Use fdt to find the console to initialise. Try to use /chosen/stdout-path
if present otherwise fallback to /aliases/serial0.

Don't require a platform match to run the various console init functions

Use fdt to find the console to initialise. Try to use /chosen/stdout-path
if present otherwise fallback to /aliases/serial0.

Don't require a platform match to run the various console init functions
so the init functions will run for unknown board ids.

With and ok kettenis@ on a earlier version.

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