imx6 based on a single cortex-a7 core. Other changes to imx6 drivers
and support code are needed to fully support the imx6ul.
Also fix an indentation glitch committed in the prior change.
driver for imx6. Some newer dts source puts the GIC node at the root
instead of under /soc, so look in both places. Also, sometimes the GIC
node doesn't list itself as its own interrupt-parent, allow that too.
At this point, INTRNG is not going away (the option may go away, but the
code is not), so we no longer need code to support workarounds that handled
the lack of INTRNG functionality.
The MFC will include a compat definition of smp_no_rendevous_barrier()
that calls smp_no_rendezvous_barrier().
Reviewed by: gnn, kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D10313
FreeBSD's DTS contained only one PL050 node and driver considered it to
be PS/2 keyboard. In reality PL050 is a PS/2 port that pushes bytes to/from
the periphers connected to it. New DTS contains two nodes and QEMU emulates
keyboard connected to port #0 and mouse connected to port #1. Since there
is no way to say what's connected to port by checking DTS we hardcode
this knowledge in the driver: it assumes keyboard on port #0 and ignores
port #1 altogether.
Also QEMU defaults emulated keyboard to scan code set 2 while driver used
to work with scan code set 1 so when initializing driver make sure keyboard
is switched to scan code set 1
Scope of this change is somewhat larger than just converting to INTRNG.
The reason for this is that INTRNG support required switching from custom
to upstream DTS because custom DTS didn't have interrup routing information.
This switch caused rewrite of PCI and CLCD drivers and adding SCM module.
List of changes in this commit:
- Enable INTRNG and switch to versatile-pb.dts
- Add SCM driver that controls various peripheral devices like LCD or
PCI controller. Previously registers required for power-up and
configuring peripherals were part of their respective nodes. Upstream
DTS has dedicated node for SCM
- Convert PL190 driver to INTRNG
- Convert Versatile SIC (secondary interrupt controller) to INTRNG
- Refactor CLCD driver to use SCM API to power up and configuration
- Refactor PCI driver to use SCM API to enable controller
- Refactor PCI driver to use interrupt map provided in DTS for
interrupt routing. As a result it fixes broken IRQ routing and
it's no longer required to run QEMU with "-global versatile_pci.broken-irq-mapping=1"
command-line arguments
Fallback to Linux video interface bindings introduced in r313068 worked
with then current DTS but that DTS turned out to be not conformant to
the the bindings spec. DTS import in r314854 fixed the conformancy but
broke the functionality. This commit syncs up functionality to the actual
spec.
Reported by: manu@
cfumass(4) is not usable if usfs(4) is loaded or compiled into the
kernel. Remove usfs so that the user may kldload the USB mass storage
target they prefer.
PR: 218169
Reviewed by: trasz, hselasky (no objection)
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D10153
I fixed this in 1997, but the fix was over-engineered and fragile and
was broken in 2003 if not before. i386 parameters were copied to 8
other arches verbatim, mostly after they stopped working on i386, and
mostly without the large comment saying how the values were chosen on
i386. powerpc has a non-verbatim copy which just changes the uncritical
parameter and seems to add a sign extension bug to it.
Just treat negative offsets as offsets if they are no more negative than
-db_offset_max (default -64K), and remove all the broken parameters.
-64K is not very negative, but it is enough for frame and stack pointer
offsets since kernel stacks are small.
The over-engineering was mainly to go more negative than -64K for the
negative offset format, without affecting printing for more than a
single address.
Addresses in the top 64K of a (full 32-bit or 64-bit) address space
are now printed less well, but there aren't many interesting ones.
For arches that have many interesting ones very near the top (e.g.,
68k has interrupt vectors there), there would be no good limit for
the negative offset format and -64K is a good as anything.
We don't have enouch space to store full VFP context within mcontext
stucture. Due to this:
- follow i386/amd64 way and store VFP state outside of the mcontext_t
but point to it. Use the size of VFP state structure as an 'magic'
indicator of the saved VFP state presence.
- teach set_mcontext() about this external storage.
- for signal delivery, store VFP state to expanded 'struct sigframe'.
Submited by: Andrew Gierth (initial version)
PR: 217611
MFC after: 2 weeks
FreeBSD uses upstream DTB for RPi3 build and compatibility string for
i2c device is different there. Add this new string to compatibility data.
Reported by: Karl Denninger
MFC after: 3 days
- in mcontext_t, rename newer used 'union __vfp' to equaly sized 'mc_spare'.
Space allocated by 'union __vfp' is too small and cannot hold full
VFP context.
- move structures defined in fp.h to more appropriate headers.
- remove all unused VFP structures.
MFC after: 2 weeks
Newbus handles multiple equally named device classes without problems,
so there is no reason to use slightly cryptic "<foo>_shdci" for them.
In contrast, the driver module name must be unique, so "<foo>_shdci"
is the right name for it.
matches static binaries.
Interpretation of the 'static' there is that the binary must not
specify an interpreter. In particular, shared objects are matched by
the brand if BI_CAN_EXEC_DYN is also set.
This improves precision of the brand matching, which should eliminate
surprises due to brand ordering.
Revert r315701.
Discussed with and tested by: ed (previous version)
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
CloudABI executables are statically linked and don't have an
interpreter. Setting the interpreter path to NULL used to work
previously, but r314851 introduced code that checks the string
unconditionally. Running CloudABI executables now causes a null pointer
dereference.
Looking at the rest of imgact_elf.c, it seems various other codepaths
already leaned on the fact that the interpreter path is set. Let's just
go ahead and pick an obviously incorrect interpreter path to appease
imgact_elf.c.
MFC after: 1 week
calculated at runtime based on how long it takes to set up an event in
hardware. This fixes the intermittant 1-minute hang at boot on imx5
systems, and also the occasional oversleeping while running. It doesn't
affect imx6 systems, which use different hardware for eventtimers.
It turns out that it usually takes about 30 timer ticks to set up the timer
compare register, and the old hard-coded minimum period was 10 ticks. On
the rare occasions when a timeout event that short was set up, we'd miss
the event and have to wait about 64 seconds for counter rollover before
the compare interrupt would fire.
Instead of just hardcoding a new bigger value, the code now measures the
time it takes to do the register read/write sequence to set up the compare
register, scales it up by 1.5x to be safe, and calculates the minimum event
period from the result. In the real world, the minimum period works out to
about 750 nanoseconds on imx5 hardware.
It turns out to be surprisingly expensive to access the gpt hardware (on the
order of 150ns per read/write). To cut down on the overhead of setting up
each eventtimer event, eliminate read-modify-write sequences to manage the
compare interrupt enable, by keeping a shadow copy of the hardware register
and only writing to the hardware when the enable bits really change.
cleanups enabled by that:
- The only thing left in imx_gptvar.h was the softc, which IMO never
should have been in there at all. Move it into the driver, and
delete the header file.
- Remove several unneeded #includes from the driver.
- Change imx_gpt_softc from global to static (it's used by DELAY()), and
don't redundantly static-initialize it to NULL.
supply the addresses for the DPLL register blocks) by hard-coding the
addresses in the driver source code. Yes, this is just as bad an idea as
it sounds, but we have no choice.
In the early days of using fdt data, when we were making up our own data
for each board, we defined 4 sets of memory mapped registers in the data.
The vendor-supplied data only provides the address of the CCM register
block, but not the 3 DPLL blocks. The linux driver has the DPLL physical
addresses (which differ by SOC type) hard-coded in the driver, and we
have no choice but to do the same thing if we want to run with the vendor-
supplied fdt data.
So now we use bus_space_map() to make the DPLL blocks accessible, choosing
the set of fixed addresses to map based on the soc id.
It seems to be old code from the armv6 project branch that never had a
kernel config.
Reviewed by: mmel
Sponsored by: ABT Systems Lrd
Differential Revision: https://reviews.freebsd.org/D7166
nodes from the DTB by default. This will allow us to enumerate the CPUs
without hard coding the CPU count into code.
Reviewed by: br
Sponsored by: ABT Systems Ltd
Differential Revision: https://reviews.freebsd.org/D9827
be migrated to this and will allow the removal of this option.
Reviewed by: ian
Sponsored by: ABT Systems Ltd
Differential Revision: https://reviews.freebsd.org/D9907
the default partition, eMMC v4.41 and later devices can additionally
provide up to:
1 enhanced user data area partition
2 boot partitions
1 RPMB (Replay Protected Memory Block) partition
4 general purpose partitions (optionally with a enhanced or extended
attribute)
Of these "partitions", only the enhanced user data area one actually
slices the user data area partition and, thus, gets handled with the
help of geom_flashmap(4). The other types of partitions have address
space independent from the default partition and need to be switched
to via CMD6 (SWITCH), i. e. constitute a set of additional "disks".
The second kind of these "partitions" doesn't fit that well into the
design of mmc(4) and mmcsd(4). I've decided to let mmcsd(4) hook all
of these "partitions" up as disk(9)'s (except for the RPMB partition
as it didn't seem to make much sense to be able to put a file-system
there and may require authentication; therefore, RPMB partitions are
solely accessible via the newly added IOCTL interface currently; see
also below). This approach for one resulted in cleaner code. Second,
it retains the notion of mmcsd(4) children corresponding to a single
physical device each. With the addition of some layering violations,
it also would have been possible for mmc(4) to add separate mmcsd(4)
instances with one disk each for all of these "partitions", however.
Still, both mmc(4) and mmcsd(4) share some common code now e. g. for
issuing CMD6, which has been factored out into mmc_subr.c.
Besides simply subdividing eMMC devices, some Intel NUCs having UEFI
code in the boot partitions etc., another use case for the partition
support is the activation of pseudo-SLC mode, which manufacturers of
eMMC chips typically associate with the enhanced user data area and/
or the enhanced attribute of general purpose partitions.
CAVEAT EMPTOR: Partitioning eMMC devices is a one-time operation.
- Now that properly issuing CMD6 is crucial (so data isn't written to
the wrong partition for example), make a step into the direction of
correctly handling the timeout for these commands in the MMC layer.
Also, do a SEND_STATUS when CMD6 is invoked with an R1B response as
recommended by relevant specifications. However, quite some work is
left to be done in this regard; all other R1B-type commands done by
the MMC layer also should be followed by a SEND_STATUS (CMD13), the
erase timeout calculations/handling as documented in specifications
are entirely ignored so far, the MMC layer doesn't provide timeouts
applicable up to the bridge drivers and at least sdhci(4) currently
is hardcoding 1 s as timeout for all command types unconditionally.
Let alone already available return codes often not being checked in
the MMC layer ...
- Add an IOCTL interface to mmcsd(4); this is sufficiently compatible
with Linux so that the GNU mmc-utils can be ported to and used with
FreeBSD (note that due to the remaining deficiencies outlined above
SANITIZE operations issued by/with `mmc` currently most likely will
fail). These latter will be added to ports as sysutils/mmc-utils in
a bit. Among others, the `mmc` tool of the GNU mmc-utils allows for
partitioning eMMC devices (tested working).
- For devices following the eMMC specification v4.41 or later, year 0
is 2013 rather than 1997; so correct this for assembling the device
ID string properly.
- Let mmcsd.ko depend on mmc.ko. Additionally, bump MMC_VERSION as at
least for some of the above a matching pair is required.
- In the ACPI front-end of sdhci(4) describe the Intel eMMC and SDXC
controllers as such in order to match the PCI one.
Additionally, in the entry for the 80860F14 SDXC controller remove
the eMMC-only SDHCI_QUIRK_INTEL_POWER_UP_RESET.
OKed by: imp
Submitted by: ian (mmc_switch_status() implementation)
as kernel drivers and their dependency onto mmc(4); this allows for
incrementing the mmc(4) module version but also for entire omission
of these bridge declarations for mmccam(4) in a single place, i. e.
in dev/mmc/bridge.h.
comments, marking unused parameters as such, style(9), whitespace,
etc.
o In the mmc(4) bridges and sdhci(4) (bus) front-ends:
- Remove redundant assignments of the default bus_generic_print_child
device method (I've whipped these out of the tree as part of r227843
once, but they keep coming back ...),
- use DEVMETHOD_END,
- use NULL instead of 0 for pointers.
o Trim/adjust includes.
RPi3 cpufreq is more like that on RPi2. Setting arm frequency
above min (say, "sysctl hw.cpufreq.arm_freq=600000001") turns on
turbo mode, and the firmware automatically raises voltage, sets
frequency to max 1200MHz, and throttle when overheat, etc.
Swap if/else parts and use SOC_BCM2835 def so RPi3 can share the
same cpufreq logic as RPi2, instead of falling to that for RPi.
Submitted by: Jia-Shiun Li <jiashiun@gmail.com>
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D9640
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.
Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96
