Modern ARM systems do not have an FPA unit but GDB reserves register
indices for FPA registers and expects the stub to know their sizes.
PR: 251022
Submitted by: Dmitry Salychev <dsl@mcusim.org>
MFC after: 2 weeks
to work with the pmu and tempmon nodes as well as the soc node. This allows
interrupts to work on the pmu and tempmon devices even though we don't have
a driver for the low-power gpc interrupt controller (which is not a problem
because we also don't have support for entering deep power-down modes where
it gets used).
Some imx6 drivers are being converted to use features that weren't available
when they were first written (such as accessing shared device registers via
the syscon pseudo-device), so imx6 custom kernels that reference those
devices will now need this infrastructure in place.
Attach after interrupt controllers, since the attach function tries to
set up an interrupt handler.
Check for the availability of the required firmware early in the attach
code (before allocating resources). If the firmware is not available, set
a static var to remember that, so that if the device is re-probed on later
passes it won't repeatedly try to attach and then complain again about
missing firmware.
Remove the port for aml8726.
Kernel config was removed in r346096 and this port was never migrated
to GENERIC.
It is also impossible to obtain such hardware nowadays.
Reviewed by: imp
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D27281
Remove the port for rk30xx.
Kernel config was removed in r346096 and this port was never migrated
to GENERIC.
It is also impossible to obtain such hardware nowadays and this code
don't provide anything beside booting.
Reviewed by: imp
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D27280
The arm configs that required it have been removed from the tree.
Removing this option makes the callout code easier to read and
discourages developers from adding new configs without eventtimer
drivers.
Reviewed by: ian, imp, mav
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D27270
In case u-boot was compiled without video support set the PLL
to 432Mhz (which allow us to use most of the HDMI resolution for
tcon) and set it as the parent for the DE clock.
in sync with (most) other architectures. No functional changes.
Reviewed by: manu
Tested by: mmel
MFC after: 2 weeks
Sponsored by: EPSRC
Differential Revision: https://reviews.freebsd.org/D26604
Hiding this feature behind RB_VERBOSE is gratuitous. The tunable is enough
to limit its use to only those who explicitly request it.
Suggested by: kevans
Move dump_avail[] extern declaration and inlines into a new header
vm/vm_dumpset.h. This fixes default gcc build for mips.
Reviewed by: alc, scottph
Tested by: kevans (previous version)
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D26741
Push the root seed version to userspace through the VDSO page, if
the RANDOM_FENESTRASX algorithm is enabled. Otherwise, there is no
functional change. The mechanism can be disabled with
debug.fxrng_vdso_enable=0.
arc4random(3) obtains a pointer to the root seed version published by
the kernel in the shared page at allocation time. Like arc4random(9),
it maintains its own per-process copy of the seed version corresponding
to the root seed version at the time it last rekeyed. On read requests,
the process seed version is compared with the version published in the
shared page; if they do not match, arc4random(3) reseeds from the
kernel before providing generated output.
This change does not implement the FenestrasX concept of PCPU userspace
generators seeded from a per-process base generator. That change is
left for future discussion/work.
Reviewed by: kib (previous version)
Approved by: csprng (me -- only touching FXRNG here)
Differential Revision: https://reviews.freebsd.org/D22839
Now that config(8) has supported include for 19 years, transition to
including the NOTES files. include support didn't exist at the time,
nor did the envvar stuff recently added. Now that it does, eliminate
the building of LINT files by just including everything you need.
Note: This may cause conflicts with updating in some cases.
find sys -name LINT\* -rm
is suggested across this commit to remove the generated LINT
files.
Reviewed by: kevans
Differential Revision: https://reviews.freebsd.org/D26540
The boot metadata (also referred to as modinfo, or preload metadata)
provides information about the size and location of the kernel,
pre-loaded modules, and other metadata (e.g. the EFI framebuffer) to be
consumed during by the kernel during early boot. It is encoded as a
series of type-length-value entries and is usually constructed by
loader(8) and passed to the kernel. It is also faked on some
architectures when booted by other means.
Although much of the module information is available via kldstat(8),
there is no easy way to debug the metadata in its entirety. Add some
routines to parse this data and allow it to be printed to the console
during early boot or output via a sysctl.
Since the output can be lengthly, printing to the console is gated
behind the debug.dump_modinfo_at_boot kenv variable as well as the
BOOTVERBOSE flag. The sysctl to print the metadata is named
debug.dump_modinfo.
Reviewed by: tsoome
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D26687
It is unlikely, but possible, that an unrecognized or unsupported
relocation type is encountered while trying to load a kernel module. If
this occurs we should offer the symbol index as a hint to the user.
While here, fix some small style issues.
Reviewed by: markj, kib (amd64 part, in D26701)
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.
We have a few shortcuts in the arm trap code to speed up obvious "must fail"
cases. In these situations, make sure that we fill in the "sig" and "code"
fields of the generated signal.
MFC after: 3 weeks
The hardware supports periods as long as 196 seconds[*] when using the
maximal prescaling of 72000 and maximum cycle count of 2^16.
But the code becomes incorrect when the period length approaches 1 second.
That's because of things like NS_PER_SEC / period.
[*] At the same time I must note that the KPI provides for maximum
period of about 4 seconds (2^32 nanoseconds).
MFC after: 2 weeks
On Ampere Altra systems, the sparse population of RAM within the
physical address space causes the vm_page_dump bitmap to be much
larger than necessary, increasing the size from ~8 Mib to > 2 Gib
(and overflowing `int` for the size).
Changing the page dump bitmap also changes the minidump file
format, so changes are also necessary in libkvm.
Reviewed by: jhb
Approved by: scottl (implicit)
MFC after: 1 week
Sponsored by: Ampere Computing, Inc.
Differential Revision: https://reviews.freebsd.org/D26131
These definitions were repeated by all architectures, with small
variations. Consolidate the common definitons in machine
independent code and use bitset(9) macros for manipulation. Many
opportunities for deduplication remain in the machine dependent
minidump logic. The only intended functional change is increasing
the bit index type to vm_pindex_t, allowing the indexing of pages
with address of 8 TiB and greater.
Reviewed by: kib, markj
Approved by: scottl (implicit)
MFC after: 1 week
Sponsored by: Ampere Computing, Inc.
Differential Revision: https://reviews.freebsd.org/D26129
OTG mode is not supported still. It's easy to do it as a one-off
detection, but the proper support requires continuous monitoring and
communicating the current state to the USB layer.
Also, fix phy0_route setting for H3. Remove duplicate register
definitions.
Tested on Orange Pi PC Plus with dr_mode="peripheral" using
hw.usb.template=3
umodem_load="YES"
Reviewed by: manu
MFC after: 5 weeks
Differential Revision: https://reviews.freebsd.org/D26348
One problem with the bus_space_read_N() and bus_space_write_N() family of
functions is that they provide no protection against exceptions which can
occur when no physical hardware or device responds to the read or write
cycles. In such a situation, the system typically would panic due to a
kernel-mode bus error. The bus_space_peek_N() and bus_space_poke_N() family
of functions provide a mechanism to handle these exceptions gracefully
without the risk of crashing the system.
Typical example is access to PCI(e) configuration space in bus enumeration
function on badly implemented PCI(e) root complexes (RK3399 or Neoverse
N1 N1SDP and/or access to PCI(e) register when device is in deep sleep state.
This commit adds a real implementation for arm64 only. The remaining
architectures have bus_space_peek()/bus_space_poke() emulated by using
bus_space_read()/bus_space_write() (without exception handling).
MFC after: 1 month
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D25371
that can be extended, but also ensure compile-time type checking. Refactor
common code out of arch-specific implementations. Move the mpr and mps
drivers to this new API. The template type remains visible to the consumer
so that it can be allocated on the stack, but should be considered opaque.
Fixes for Raspberry Pi 4B PCIe / USB:
- Pass through a DMA tag for the controller.
- In theory the controller can access the lower 3 GB, but testing found
that unreliable. OpenBSD also restricts DMA to the lowest 960 MiB.
- Rename some constants to be a bit more meaningful.
Submitted by: Robert Crowston, crowston at protonmail.com
Reviewed by: mkarels, outside reviewers
Differential Revision: https://reviews.freebsd.org/D26344
Allwinner USB DRD is based on the Mentor USB OTG controller, with a
different register layout and a few missing registers.
The code is by Andrew Turner (andrew).
Reviewed by: hselasky, manu
Obtained from: andrew
MFC after: 5 weeks
Differential Revision: https://reviews.freebsd.org/D5881
abs() takes a (signed) int as input.
Instead, it was used with unsigned 64-bit integers.
So, add and use a new helper function to calculate a difference between
two uint64_t-s.
Reviewed by: manu
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D26307
Currently we use a single bit to indicate whether the virtual page is
part of a superpage. To support a forthcoming implementation of
non-transparent 1GB superpages, it is useful to provide more detailed
information about large page sizes.
The change converts MINCORE_SUPER into a mask for MINCORE_PSIND(psind)
values, indicating a mapping of size psind, where psind is an index into
the pagesizes array returned by getpagesizes(3), which in turn comes
from the hw.pagesizes sysctl. MINCORE_PSIND(1) is equal to the old
value of MINCORE_SUPER.
For now, two bits are used to record the page size, permitting values
of MAXPAGESIZES up to 4.
Reviewed by: alc, kib
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D26238
This allows privileged userspace processes to find information about the
physical page backing a given mapping. It is useful in applications
such as DPDK which perform some of their own memory management.
Reviewed by: kib, jhb (previous version)
MFC after: 2 weeks
Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara Inc.
Differential Revision: https://reviews.freebsd.org/D26237
devctl_notify_f isn't needed, so retire it. The flags argument is now
unused, so rather than keep it around, retire it. Convert all old
users of it to devctl_notify(). This path no longer sleeps, so is safe
to call from any context. Since it doesn't sleep, it doesn't need to
know if it is OK to sleep or not.
Reviewed by: markj@
Differential Revision: https://reviews.freebsd.org/D26140
For some unknown reason this seems to fix this function when we printf
the best variable. This isn't a delay problem as doing a printf without
it doesn't solve this problem.
This is way above my pay grade so add some printf that shouldn't be printed
in 99% of the case anyway.
Fix booting on most Allwinner boards as the mmc IP uses a NM clock.
Reported by: Alexander Mishin <mishin@mh.net.ru>
MFC after: 3 days
X-MFC-With: 363887
Currently, we parse notes for the values of ELF FreeBSD feature flags
and osrel. Knowing these values, or knowing that image does not carry
the note if pointers are NULL, is useful to decide which ABI variant
(brand) we want to activate for the image.
Right now this is only a plumbing change
Tested by: pho
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D25273
While here change type of some variables from long to int, it's sufficient.
Also, add length reporting to a couple of debug printfs.
MFC after: 3 weeks
In NECx the leading mark has length of 8T as opposed to 16T in NEC,
where T is 562.5 us. So, 4.5 ms.
Our threshold was set to 128 * 42.7 us (derived from the sampling
frequency of 3/128 MHz). So, ~5.5 ms.
The new threshold is set to AW_IR_L1_MIN. I think that's a good enough
lower bound for detecting the leading pulse.
Also, calculations of active_delay (which is activation delay) are fixed.
Previously they would be wrong if AW_IR_ACTIVE_T was anything but zero,
because the value was already bit-shifted.
Finally, I am not sure why the activation delay was divided by two when
calculating the initial pulse length. I have not found anything that
would explain or justify it. So, I removed that division.
MFC after: 3 weeks
These exist on the Raspberry Pi 3 and 4 and control and external IO
expander.
Reviewed by: manu
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D25858
There are child nodes in the device tree, e.g. the Raspberry Pi firmware
GPIO device. Add support for this to be a bus so we can attach these
children.
Reviewed by: manu
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D25848
The newer hardware revisions of the Raspberry Pi 4 removed the ability of
the VIA VL805 xhci controller to load its own firmware. Instead the
firmware must be installed at the appropriate time by the VideoCore
coprocessor.
Submitted by: Robert Crowston <crowston_protonmail.com>
Differential Revision: https://reviews.freebsd.org/D25261
Re-implement clocks for these SoC by using now standard extres/clk framework.
This is necessary for future expansion of these. The new implementation
is (due to the size of the patch) only the initial (minimum) version.
It will be updated/expanded with a subsequent set of particular patches.
This patch is also not tested on OMAP4 based boards (BeagleBone),
so all possible issues should be (and will be) fixed by ASAP once
identified.
Submited by: Oskar Holmlund (oskar.holmlund@ohdata.se)
Differential Revision: https://reviews.freebsd.org/D25118
The Raspberry Pi GPIO config and state messages incorrectly return with
the tag length set to 0. We then check this value to have the response
flag set. Work around this by setting the response flag when setting the
GPIO config or state and this value is zero.
Sponsored by: Innovate UK
Use the new Raspberry Pi firmware driver in the cpufreq driver. It is
intended all drivers that need to interact with the firmware will move to
use the firmware driver, this is the first.
Reviewed by: manu
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D25609
It will be needed by other eaarly drivers.
While here make the dependency of the mailbox formal with MODULE_DEPEND.
Reviewed by: manu
Sponsored by: Innovate UK
The firmware driver uses the mailbox driver to communicate with the
firmware. Make this a more formal dependency.
Reviewed by: manu
Sponsored by: Innovate UK
This will be needed before a future GPIO controller driver is added
as the later enables regulators that leave the SDHCI controller disabled.
Reviewed by: manu
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D25834
The gate control bit offset was correctly specified, but AW_CLK_HAS_GATE
flag was not set.
Tested with (C)IR receiver on Orange Pi PC Plus.
Reviewed by: manu
MFC after: 1 week
This removes SCTP from in-tree kernel configuration files. Now, SCTP
can be enabled by simply loading the module, as discussed on
freebsd-net@.
Reviewed by: tuexen
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D25611
Module name (unlike of the of driver name) must be system wide unique.
Reported by: Mark Millard(bcm_pci), andrew(mvebu_gpio)
MFC with: r362954, r362385
Communicating with the Raspberry Pi firmware is currently handled by each
driver calling into the mbox driver, however the device tree is structured
such that they should be calling into a firmware driver.
Add a driver for this node with an interface to communicate to the firmware
via the mbox interface.
There is a sysctl to get the firmware revision. This is a unix date so can
be parsed with:
root@generic:~ # date -j -f '%s' sysctl -n dev.bcm2835_firmware.0.revision
Tue Nov 19 16:40:28 UTC 2019
Reviewed by: manu
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D25572
This adds support for the Broadcom bcm2711 PCI express controller, found
on the Raspberry Pi 4 (aka the bcm2838 SoC). The driver has only been
developed against the soldered-on VIA XHCI controller and not tested
with other end points.
Submitted by: Robert Crowston <crowston_protonmail.com>
Differential Revision: https://reviews.freebsd.org/D25068
- Add CCM driver and clocks implementations for i.MX 8M
- Add GPC driver for iMX8
- Add clock tree for i.MX 8M Quad
- Add clocks support and new compat strings (where required) for existing i.MX 6 UART, I2C, and GPIO drivers
- Enable aarch64-compatible drivers form i.MX 6 in arm64 GENERIC kernel config
- Add dtb/imx8 kernel module with DTBs for Nitrogen8M and iMX8MQ EVK
With this patch both Nitrogen8M and iMX8MQ EVK boot with NFS root up to multiuser login prompt
Reviewed by: manu
Differential Revision: https://reviews.freebsd.org/D25274
The Raspbery Pi computers do not properly implement PSCI. The canonical
way to reset them is to set a watchdog timer and allow it to expire.
Submitted by: Robert Crowston <crowston_protonmail.com>
Differential Revision: https://reviews.freebsd.org/D25268
It turns out relocating the symbol table itself can cause issues, like fbt
crashing because it applies the offsets to the kernel twice.
This had been previously brought up in rS333447 when the stoffs hack was
added, but I had been unaware of this and reimplemented symtab relocation.
Instead of relocating the symbol table, keep track of the relocation base
in ddb, so the ddb symbols behave like the kernel linker-provided symbols.
This is intended to be NFC on platforms other than PowerPC, which do not
use fully relocatable kernels. (The relbase will always be 0)
* Remove the rest of the stoffs hack.
* Remove my half-baked displace_symbol_table() function.
* Extend ddb initialization to cope with having a relocation offset on the
kernel symbol table.
* Fix my kernel-as-initrd hack to work with booke64 by using a temporary
mapping to access the data.
* Fix another instance of __powerpc__ that is actually RELOCATABLE_KERNEL.
* Change the behavior or X_db_symbol_values to apply the relocation base
when updating valp, to match link_elf_symbol_values() behavior.
Reviewed by: jhibbits
Sponsored by: Tag1 Consulting, Inc.
Differential Revision: https://reviews.freebsd.org/D25223
The submitter notes that the bcm2835_cpufreq driver really just needs the
rpi4 compat string added to it; powerd subsequently works and the dev.cpu.0
sysctl values look sane and can be successfully manipulated.
Submitted by: James Mintram <me@jamesrm.com>
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D25349
By using DWC TRM terminology, normal descriptor format should be named
extended and alternate descriptor format should be named normal.
Should not been functional change.
MFC after: 4 weeks
The AXI bridge is different between ARMADA 38x and 8K, and both platforms
needs specific setup to mitigate HW issues with accessing RTC registers.
MFC after: 2 weeks
