Step towards modularizing the Flattened Device Tree code.

Define attributes for each of the specific device bindings: clock,
dai, dma, gpio, i2c, iommu, mbox, mmc_pwrseq, phy, power, power domain,
pwm, regulator, reset controller, spi, system controller, pin
controller. Include these support files only if either a provider
or consumer with one of these attributes is present in the kernel
config.

Add the necessary attributes to the device / attach declarations for
each provider and consumer.

There are some bindings that are consumed by generic code (iommu, pinctrl,
power, power domain). Provide weak stubs for these routines to handle
situations where there is no provider.

No actual code changed; NFCI.

Add support for Xilinx 7-series ADC.

The temperature and voltage sensors are exposed with sysmon:

# envstat -d zynqxadc0
Current CritMax WarnMax WarnMin CritMin Unit
temperature: 67.426 degC
vccint: 1.010 V
vccaux: 1.801 V
vp/vn: 0.011 V
vrefp: 1.250 V
vrefn: 0.004 V
vccbram: 1.009 V
vccpint: 1.009 V
vccpaux: 1.799 V
vcco_ddr: 1.500 V

Add driver for Zynq GPIO controller.

Use generic Arasan SDHCI driver for Zynq-7000.

Add basic Zynq-7000 PS clock subsystem driver.

PR# kern/57068

branches: 1.1.10;
Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

Support PCAL clock control

Add I2C clocks

Since this node is a child of a syscon, the reg property doesn't fully
describe the device physical address. Use syscon accessors to read/write
clock registers instead.

Use generic Arasan SDHCI driver for Zynq-7000.

Add basic Zynq-7000 PS clock subsystem driver.

PR# kern/57068

Use generic Arasan SDHCI driver for Zynq-7000.

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.1.10; 1.1.12;
Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

Re-factor the console-related code into fdt_console.[ch]

Fixup some mixed up log messages.

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.1.10; 1.1.12;
Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

Fixup mixed up log messages.

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.1.10; 1.1.12;
Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

Remove a now-unnecessary dance with "local-mac-address".

Use device_setprop_data() to set the "mac-address" property.

Allow non-Realtek PHYs to be used with Zynq SoCs.

The cemac driver used to skip the first PHY found in order to work
around a bug where Realtek PHYs attached to a cemac Ethernet would
report at PHY numbers 0 and 1. Unfortunately if you don't have this
bug, then your only PHY would get skipped.

The Zynq FDT always has a working PHY number recorded in it, so we now
simply use that number (if present) instead of searching for all
available PHYs.

Re-organise to enable other attachments.

More #include maintenance

Wrap long lines.

#include maintenance

G/C

branches: 1.4.8;
Inherit MAC address from Devicetree "local-mac-address" property.

Fixup some mixed up log messages.

Rename of_match_compat_data() to of_compatible_match(). Similarly,
rename of_search_compatible() to of_compatible_lookup().

Standardize on of_compatible_match() for driver matching, and adapt
all call sites.

branches: 1.1.10; 1.1.12;
Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

Fix MASK_DATA logic in previous commit -- the upper 16-bits are a mask
of pin states to preserve, not to set.

Fix MASK_DATA_SET macro

Fix bit macros

Add driver for Zynq GPIO controller.

Rename arml2cc_init to arml2cc_get_cacheinfo.

NFCI.

Refactor the "platform" defitions into fdt_platform.h

Rename ARM_PLATFORM to FDT_PLATFORM and make it available outside arm.

Implement zynq_platform_reset()

Retire PARALLELLA and ZEDBOARD kernel configs.

The Zynq-7000 port has been converted to Devicetree and is supported
by the GENERIC kernel now.

Add OCM to devmap

Add AP startup for Zynq-7000.

Remove unnecessary code in zynq_platform_device_register

Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.4.2;
Call acpi_device_register() / fdtbus_device_register() as approrpriate.

branches: 1.3.2;
Get rid of a4x bus_space tag from fdtbus_attach_args. The only consumer
of this was various com(4) glue so modify all of that to use the new
com_init_regs_stride instead.

Add support for KASAN on ARMv[67]

Thanks to maxv for many pointers and reviews.

branches: 1.1.10;
Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

Initialize `struct consdev` members cn_dev and cn_pri like other
UART drivers do. If cn_dev is 0 instead of NODEV, then the kernel
may redirect console writes to major 0, minor 0, which is /dev/mem.
On my Zynq board the kernel overwrote the page free list with a
console message in this way.

Fix build.
Sprinkle some consistency

ddb/db_active.h: New home for extern db_active.

This can be included unconditionally, and db_active can then be
queried unconditionally; if DDB is not in the kernel, then db_active
is a constant zero. Reduces need for #include opt_ddb.h, #ifdef DDB.

malloc(9) -> kmem(9)

branches: 1.2.8; 1.2.10;
in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

branches: 1.1.10;
Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

branches: 1.1.10;
Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

Merge thorpej-cfargs2.

branches: 1.2.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.1.10; 1.1.14;
Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

s/transeiver/transceiver/ in comments.

branches: 1.1.10;
Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

branches: 1.1.10;
Initial commit of FDTised Xilinx Zynq-7000 support. Tested with

qemu-system-arm -M xilinx-zynq-a9 -dtb zynq-zed.dtb -kernel netbsd.ub \
-serial /dev/null -serial stdio

Based on a set of diffs/files from rjs@

sys/arch/arm/zynq is kept in place to allow existing kernels (e.g.
ZEDBOARD and PARALLELLA) to continue to build/work during the transition,
but eventually sys/arch/arm/zynq will be deleted.

Add support for Xilinx 7-series ADC.

The temperature and voltage sensors are exposed with sysmon:

# envstat -d zynqxadc0
Current CritMax WarnMax WarnMin CritMin Unit
temperature: 67.426 degC
vccint: 1.010 V
vccaux: 1.801 V
vp/vn: 0.011 V
vrefp: 1.250 V
vrefn: 0.004 V
vccbram: 1.009 V
vccpint: 1.009 V
vccpaux: 1.799 V
vcco_ddr: 1.500 V