FDT-enabled targets were broken after r238043 that relies
on device up the hierarchy to properly setup interrupt.
nexus device for ARM platforms did job only partially:
setting handler but not unmasking interrupt. Unmasking
was performed by platform code.
Reviewed by: andrew@
the linker set of CPU modules. The newbus method, although clever,
had many flaws: it didn't really support multiple SoC, many of the
comments about order were just wrong, and it did a few things far too
late to be useful. delay and cpu_reset now work much earlier in the
boot process.
having the CPU device that's a child of atmelarm that does stuff.
o Create a linker_set for the support fucntions for the SoCs.
o Rename soc_data to soc_info.
o Move the delay and reset function pointers to new soc_data struct
o Create elements for all known SoCs
o Add lookup of the SoC we found, and print a warning if it isn't one
we know about.
arm platform. Add all the atmel boards to the ATMEL kernel for
testing purposes. Until boot loader arg parsing of baord type
is done, this won't actually be able to do the runtime selection.
running with multiple SoCs compiled in very well anyway, so this just
wastes space. As more and more SoCs arrive in the tree, it is better
to edit one master file that builds them all than many board files.
for TX transfer completion as for reasons unknown this occasionally
causes SPI_SR_RXBUFF and SPI_SR_ENDRX to not rise.
In any case, once the RX part of the transfer is done it's obvious
that the preceding TX part had finished and checking of SPI_SR_TXEMPTY
was introduced to rule out a possible cause for the data corruption
mentioned in r236495 but which didn't turn out to be the problem
anyway.
MFC after: 3 days
aren't very pretty yet, but this takes DELAY and cpu_reset and makes
them pointers.
# I worry that these are set too late in the boot, especially cpu_reset.
Create a new option for at91rm9200 support. Set this option in
std.at91. Create a new option for the at91sam9 standard devices. Set
this option in std.at91sam9. Retire files.at91sam9. Add options for
at91sam9x25 SoC and SAM9X25EK board, but don't connect it just yet as
the supporting files aren't quite ready.
Note: device at91rm9200 and device at91sam9 are presently mutually
exclusive.
this array either from Linux boot data, when enabled, or in the
typical way that most ports do it. arm_pyhs_avail_init is coming
soon since it must be a separate function.
the boot parameters from initarm first thing. parse_boot_param parses
the boot arguments and converts them to the /boot/loader metadata the
rest of the kernel uses. parse_boot_param is a weak alias to
fake_preload_metadata, which all the platforms use now, but may become
more extensive in the future.
Since it is a weak symbol, specific boards may define their own
parse_boot_param to interface to custom boot loaders.
Reviewed by: cognet@, Ian Lapore
SoC variants. Fold the AT91SAM9XE chips into the AT91SAM9260
handling, where appropriate. The following SoCs/SoC families are recognized:
at91cap9, at91rm9200, at91sam9260, at91sam9261, at91sam9263,
at91sam9g10, at91sam9g20, at91sam9g45, at91sam9n12, at91sam9rl,
at91sam9x5
and the following variations are also recognized:
at91rm9200_bga, at91rm9200_pqfp, at91sam9xe, at91sam9g45, at91sam9m10,
at91sam9g46, at91sam9m11, at91sam9g15, at91sam9g25, at91sam9g35,
at91sam9x25, at91sam9x35
This is only the identification routine: no additional Atmel devices
are supported at this time.
# With these changes, I'm able to boot to the point of identification
# on a few different Atmel SoCs that we don't yet support using the
# KB920X config file -- someday tht will be an ATMEL config file...
structure with the first 4 registers to allow a wider range of boot
loaders to work. Future commits will make use of this to centralize
support for the different loaders.
- Move DMA tag and map creature to at91_spi_activate() where the other
resource allocation also lives. [1]
- Flesh out at91_spi_deactivate(). [1]
- Work around the "Software Reset must be Written Twice" erratum.
- For now, run the bus at the slowest speed possible in order to work
around data corruption on transit even seen with 9 MHz on ETHERNUT5
(15 MHz maximum) and AT45DB321D (20 MHz maximum). This also serves as
a poor man's work-around for the "NPCSx rises if no data data is to be
transmitted" erratum of RM9200. Being able to use the appropriate bus
speed would require:
1) Adding a proper work-around for the RM9200 bug consisting of taking
the chip select control away from the SPI peripheral and managing it
directly as a GPIO line.
2) Taking the maximum frequencies supported by the actual board and the
slave devices into account and basing the whole thing on the master
clock instead of hardcoding a divisor as previously done.
3) Fixing the above mentioned data corruption.
- KASSERT that TX/RX command and data sizes match on transfers.
- Introduce a mutex ensuring that only one child device is running a SPI
transfer at a time. [1]
- Add preliminary, #ifdef'ed out support for setting the chip select. [1]
- Use the RX instead of the TX commando size when setting up the RX side
of a transfer.
- For controllers having SPI_SR_TXEMPTY, i.e. !RM9200, also wait for the
completion of the TX part of transfers before stopping the whole thing
again.
- Use DEVMETHOD_END. [1]
- Use NULL instead of 0 for pointers. [1, partially]
Additional testing by: Ian Lepore
Submitted by: Ian Lepore [1]
MFC after: 1 week
console so initialized will work upon return from cninit. While this
is the very next line, other platforms setup all this stuff before
calling cninit. Also, initialize the SDRAM base register in the inner
block in at91_ramsize().
compiled into the kernel. This allows us to boot the same kernel on
machines with different master clock frequencies, so long as we can
determine the main clock frequency accurately. Cleanup the pmc clock
init function so it can be called in early boot so we can use the
serial port just after we call cninit.
# We have two calls to at91_pmc_clock_init for reasons unknown, that will
# be fixed later -- it is harmless for now.
frequency in the at91_pmc_clock_init rather than passing it in. Allow
for frequencies >= 21MHz by rounding to the nearest 500Hz (Idea from
Ian Lapore whose company uses a similar arrangement in their product).
at91_pmc_clock_init() is now nearly independent of the rest of the pmc
driver (which means we may be able to call it much earlier in boot
soon to eliminate the master clock config file requirement for printf
to work during early boot and also eliminate some interdependencies
with the device ordering which requires pmc to be the first device
added).
all integrated and on-board peripherals except the DataFlash (at91_spi(4)
and at45d(4) still need to be unb0rken) and NAND Flash (missing NAND
framework) are working.
AFAICT, this makes FreeBSD the first operating system besides Nut/OS
supporting Ethernut 5 out of tree.
- Align the RX buffers on the cache line size, otherwise the requirement
of partial cache line flushes on every are pretty much guaranteed. [1]
- Make the code setting the RX timeout match its comment (apparently,
start and stop bits were missed in the previous calculation). [1]
- Cover the busdma operations in at91_usart_bus_{ipend,transmit}() with
the hardware mutex, too, so these don't race against each other.
- In at91_usart_bus_ipend(), reduce duplication in the code dealing with
TX interrupts.
- In at91_usart_bus_ipend(), turn the code dealing with RX interrupts
into an else-if cascade in order reduce its complexity and to improve
its run-time behavior.
- In at91_usart_bus_ipend(), add missing BUS_DMASYNC_PREREAD calls on
the RX buffer map before handing things over to the hardware again. [1]
- In at91_usart_bus_getsig(), used a variable of sufficient width for
storing the contents of USART_CSR.
- Use KOBJMETHOD_END.
- Remove an unused header.
Submitted by: Ian Lepore [1]
Reviewed by: Ian Lepore
MFC after: 1 week
improvements:
(1) Implement new model in previously missed at91 UART driver
(2) Move BREAK_TO_DEBUGGER and ALT_BREAK_TO_DEBUGGER from opt_comconsole.h
to opt_kdb.h (spotted by np)
(3) Garbage collect now-unused opt_comconsole.h
MFC after: 3 weeks
Approved by: re (bz)
* Support for sam9 "EMAC" controller.
* Support for rmii interface to phy.
at91.c & at91sam9.c:
* Eliminate separate at91sam9.c file.
* Add new devices to at91sam9_devs table.
at91_machdep.c & at at91sam9_machdep.c:
* Automatic chip type determination.
* Remove compile time chip dependencies.
* Eliminate separate at91sam9_machdep.c file.
at91_pmc.c:
* Corrected support for all of the sam926? and sam9g20 chips.
* Remove compile time chip dependencies.
My apologies to Greg for taking so long to take care of it.
queue length. The default value for this parameter is 50, which is
quite low for many of today's uses and the only way to modify this
parameter right now is to edit if_var.h file. Also add read-only
sysctl with the same name, so that it's possible to retrieve the
current value.
MFC after: 1 month
- Reorder detach so that ether_ifdetach() is called first. This removes
the race that ATE_FLAG_DETACHING closed, so that flag can be removed.
- Trim a duplicate clearing of IFF_DRV_RUNNING.
Reviewed by: imp
will initialize the FIFO memory correctly on attach. Before
that this values was intialized in only in at91_usart_bus_attach
which is called after the uart(4) memory allocation happens.
Approved by: re (kib)
MFC after: 1 week
DPCPU area was not properly mapped into kernel VA space, which caused page
fault on the first DPCPU access. This patch fixes the problem by mapping DPCPU
area into kernel VA space.
Submitted by: Michal Hajduk, Piotr Ziecik
Reviewed by: cognet, stas
Approved by: re (kib)
Obtained from: Semihalf
IF_ADDR_UNLOCK() across network device drivers when accessing the
per-interface multicast address list, if_multiaddrs. This will
allow us to change the locking strategy without affecting our driver
programming interface or binary interface.
For two wireless drivers, remove unnecessary locking, since they
don't actually access the multicast address list.
Approved by: re (kib)
MFC after: 6 weeks
- Modules and kernel code alike may use DPCPU_DEFINE(),
DPCPU_GET(), DPCPU_SET(), etc. akin to the statically defined
PCPU_*. Requires only one extra instruction more than PCPU_* and is
virtually the same as __thread for builtin and much faster for shared
objects. DPCPU variables can be initialized when defined.
- Modules are supported by relocating the module's per-cpu linker set
over space reserved in the kernel. Modules may fail to load if there
is insufficient space available.
- Track space available for modules with a one-off extent allocator.
Free may block for memory to allocate space for an extent.
Reviewed by: jhb, rwatson, kan, sam, grehan, marius, marcel, stas
the implementation can guarantee forward progress in the event of
a stuck interrupt or interrupt storm. This is especially critical
for fast interrupt handlers, as they can cause a hard hang in that
case. When first called, arm_get_next_irq() is passed -1.
Obtained from: Juniper Networks, Inc.
registers contents.
- Use memory barriers to preserve the order of buffer space operations.
This might be needed if we'll ever use this driver on architectures
where ordering is not guaranteed.
operates in the common memory mode and use polling mode to control
the status of operations as I don't have any board with interrupt
line routed yet. I'll add the GPIO interrupt driven mode as soon
as I get one.
at91_udp.c does not exist anymore, it is now replaced by at91dci in
src/sys/dev/usb/controller. Also remove the ohci_atmelarm.c because it is also
included in src/sys/conf/files
Submitted by: Sylvestre Gallon
usb stack rather than with the rest of the processor support code.
Not sure that's a good idea, as we were moving away from it, but this
fixes the build in the mean time so we can have that discussion.
rather than a fixed 512... This fixes the mount root problem on at91.
Prior to the SD card reorg, all data transfers were 512 bytes, so we
didn't notice.
the serial port class when we set the devclass since it is now
no-longer a compile time constant. Eliminate the pci include, as it
isn't relevant or necessary.
time constant. This allows us to potentially change it at runtime or
autodetect it early in the boot (the latter being much more likely to
have a good outcome).
o Only set 4-bit caps on those boards that have 4-bit caps (this means that
because we don't set wire4 yet, this forces us to always use 1-bit bus).
o Don't test wire4 when setting up the bus width, since bad things will
happen if we do.
# This likely won't fix the busted at91 sd card support, but these are
# needful changes for correctness.
contents.
- It is possible to override the dynamic configuration by using
AT91C_MAIN_CLOCK option in kernel config.
PR: arm/128961 (based on)
Submitted by: Bjorn Konig <bkoenig@alpha-tierchen.de>
Reviewed by: imp
Approved by: kib (mentor, implicit)
o Copy kb920x_machdep.c to at91_machdep.c
o Move board_init to new board_kb920x.c
o rename ramsize to at91_ramsize and make it accessible to board_* files.
o Delete files.kb920x. We can do this selection with the new boards.
o Add a stub for the tsc4370 board init, which will be added in
a future commit.
o Add new 'devices' at91_board_kb920x and at91_board_tsc4370. More are
needed and will be added in future commits.
Reviewed by: stass, cognet
sdhci supports up to 65535 blocks transfers, at91_mci - one block.
Enable multiblock operations disabled before to follow at91_mci driver
limitations.
Reviewed by: imp@
driver will need more serious help to work with an interrupt driven
path. There's many subtleties in driving the DMA engine with
interrupts in many configurations. Best to not "guess" what the right
way would be and mislead people.
memory allocation. It was change to include the range in the normal
memory area, so these ifdef'd out special cases are no longer useful
to keep around.
first one. U-boot, for example, uses the second register to store
MAC.[1]
- Use random MAC address if none configured instead of failing.
Submitted by: Bjorn Konig <bkoenig@alpha-tierchen.de> [1]
Reviewed by: imp
Approved by: kib (mentor)
MFC after: 1 week
place to add this connection, since the interrupt is for a GPIO pin,
but since we have no alternative at the moment...
Submitted by: Hans Petter Selasky
- Just grab Giant in the ixp425_iic(4) driver since this driver uses
a shared address/data register window pair to access the actual
I2C registers. None of the other ixp425 drivers lock access to these
shared address/data registers yet and that would need to be done before
this could use any meaningful locking.
- Add locking to the interrupt handler and 'iicbus_reset' methods of the
at91_twi(4) driver.
- Add locking to the pcf(4) driver. Other pcf(4) fixes include:
- Don't needlessly zero the softc.
- Use bus_foo rather than bus_space_foo and remove bus space tag and
handle from softc.
- The lpbb(4) driver just grabs Giant for now. This will be refined later
when ppbus(4) is locked.
- As was done with smbus earlier, move the DRIVER_MODULE() lines to match
the bus driver (either iicbus or iicbb) to the bridge driver into the
bridge drivers.
Tested by: sam (arm/ixp425)
As of r178766 this driver didn't compile anymore, because it missed a
switch()-statement. I'm getting tired of seeing this driver being broken
for two months already. When I run `make universe', everything passes,
except the BWCT kernel configuration file.
ALT_BREAK_TO_DEBUGGER. In addition to "Enter ~ ctrl-B" (to enter the
debugger), there is now "Enter ~ ctrl-P" (force panic) and
"Enter ~ ctrl-R" (request clean reboot, ala ctrl-alt-del on syscons).
We've used variations of this at work. The force panic sequence is
best used with KDB_UNATTENDED for when you just want it to dump and
get on with it.
The reboot request is a safer way of getting into single user than
a power cycle. eg: you've hosed the ability to log in (pam, rtld, etc).
It gives init the reboot signal, which causes an orderly reboot.
I've taken my best guess at what the !x86 and non-sio code changes
should be.
This also makes sio release its spinlock before calling KDB/DDB.
interrupt. So, add a new function pointer, arm_post_filter, which defaults
to NULL, and which will be used as the post_filter arg for
intr_event_create(). Set it properly for the AT91, so that it boots again.
Reported by: hps
- Pull all the code to deal with the trampoline stuff into one
centeralized place and use it from everywhere.
- Some minor style tidiness
Reviewed by: tinguely
for that argument. This will allow DDB to detect the broad category of
reason why the debugger has been entered, which it can use for the
purposes of deciding which DDB script to run.
Assign approximate why values to all current consumers of the
kdb_enter() interface.
silent NULL pointer dereference in the i386 and sparc64 pmap_pinit()
when the kmem_alloc_nofault() failed to allocate address space. Both
functions now return error instead of panicing or dereferencing NULL.
As consequence, vmspace_exec() and vmspace_unshare() returns the errno
int. struct vmspace arg was added to vm_forkproc() to avoid dealing
with failed allocation when most of the fork1() job is already done.
The kernel stack for the thread is now set up in the thread_alloc(),
that itself may return NULL. Also, allocation of the first process
thread is performed in the fork1() to properly deal with stack
allocation failure. proc_linkup() is separated into proc_linkup()
called from fork1(), and proc_linkup0(), that is used to set up the
kernel process (was known as swapper).
In collaboration with: Peter Holm
Reviewed by: jhb
in the same order as it's set in ate_set_mac.
I remember a discussion about this on -arm, but apparently nothing was done.
Warner, is this wrong ?
X-MFC After: proper review
7 months. You must have JP6 in the 1-2 position to supply power to the
USB devices, but I've used uftdi, uplcom and umass successfully. If you
have it in 2-3, then nothing will show up. Also, if you have the FQPA
packaging for the AT91RM9200 (like the KN9202 boards have), you will get
the following message
uhub0: device problem (IOERROR), disabling port 2
due to a hardware erratum. It is safe to ignore as it is about pins that
aren't brought out on the FQPA package and aren't proeprly terminated either.
Alas, there's no register to read to tell the FQPA from the BGA versions.
Submitted by: Daan Vreeken
Approved by: re (kensmith)
