The error masks are only needed in the BF537 demux error code, so instead
of needing all the short peripheral defines in global space, push these
masks into the one file where they are actually needed. This fixes a
bunch of define collisions with common code (can/serial/etc...).
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Barry Song <barry.song@analog.com>
When testing PREEMPT_RT kernel on BF561-EZKit, the kernel blocks while
booting. When the kernel initializes the ethernet driver, it sleeps and
never wakes up.
The issue happens when the kernel waits for a timer for Core B to timeout
(the timers are per-cpu based: static DEFINE_PER_CPU(struct tvec_base *,
tvec_bases) = &boot_tvec_bases).
However, the ksoftirqd thread for Core B (note, the ksoftirqd thread is
also per-cpu based) cannot work properly, and the timers for Core B never
times out.
When ksoftirqd() for the first time runs on core B, it is possible core A
is still initializing core B (see smp_init() -> cpu_up() -> __cpu_up()).
So the "cpu_is_offline()" check may return true and ksoftirqd moves to
"wait_to_die".
So delay the core b start up until the per-cpu timers have been set up
fully.
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
While fetching instructions at the boundary of L1 instruction SRAM, a false
External Memory Addressing Error might be triggered. We should ignore this
and continue on our way to avoid random crashes.
Because hardware errors are not exact in the Blackfin architecture, we need
to catch a few more common cases when the code flow changes and the signal
is finally delivered.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
These regions are either read-only and won't work anyways (bootrom), or
we don't want people screwing with them because they're shared between
all processes (fixed code).
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The NOMPU code already supported executing in the async banks, so this
brings the MPU code in line.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The point of this small chunk was to avoid anomaly 05000310. This never
really seemed to do what it was intended though -- no valid CPLBs exist
over the reserved memory, and there is often memory before it anyways (due
to the uClinux MTD and/or reserved DMA region). Plus, it doesn't address
the L1 instruction case.
So drop this chunk as it wastes memory and is affront to humanity.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
When working with 8 meg systems, forcing a 1 meg DMA chunk heavily cuts
into the available resources. So support smaller chunks to better cover
needs for these systems.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
While we're moving the BF54x code, have the BF54xM variants select the
normal BF54x values so that the rest of the Kconfig tree doesn't need to
check the BF54xM variant everytime it wants to check the BF54x.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
No point in returning to userspace just to have it immediately perform the
RTS step. We have to update the PC anyways, so do the RTS too.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
I don't think these defines were ever used. At any rate, we have common
bit defines for all parts as well as a Kconfig option to declare the EBIU
async timings, and no one has really complained about this so far.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Since we always use these ids as unsigned values, and we have some assert
code to make sure they don't exceed a limit, avoid signed issues.
Reported-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
If we're double faulting, then we have to assume the VMAs are not safe as
broken pointers here will prevent full trace output for the double fault.
Shouldn't be a big problem though as rarely is a double fault caused by
code in userspace.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This allows us to use any Blackfin toolchain to create kernel modules
(such as the FDPIC bfin-linux-uclibc toolchain).
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This is useful for quick tests where networks are faster than compression,
and/or the compression code is broken.
Reported-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
User reports rarely include full information, so include this important
tidbit up front. It's also good to know at a glance in general.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Every Blackfin variant has the same DMA bit masks, so avoid duplicating
them over and over in each mach header.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The driver changed from "isp1760-hcd" to "isp1760", so update resources
to match.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
There's no point in having mask defines when the entire MMR value is a
count or address. i.e. applying a mask of -1 is pointless.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
There are no MXVR device drivers, and if someday there is, we can put
these in a dedicated header rather than polluting the global namespace.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
People should not be accessing OTP MMRs directly. They should instead go
through the Blackfin ROM helper functions.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The watchdog code doesn't need these, and the other parts had these
punted, so keep the global namespace clean.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The RTC driver code doesn't need these, and the other parts had these
punted, so keep the global namespace clean.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
All the other BF54x parts had these defines renamed to avoid collision,
but it looks the BF542 was missed somehow.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The DMA channel status field was encoding redundant info wrt the DMA MMR
config register, and it was doing an incomplete job of checking all DMA
channels (some drivers write directly to the config register). So drop
the tristate field in favor of a binary atomic field. This simplifies
the code in general, removes the implicit need for sleeping, and forces
the suspend code to handle all channels properly.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The driver was moved during the merge process, so update the defines to
match the new location.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Avoid including unnecessary headers all the time as well as circular
includes with core requirements.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
All the arches define a helper macro to make things easy for driver code.
Reported-by: Frank Van Hooft <frank@frankvh.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The GPIOs on ports C/D/E on the BF538/BF539 do not behave the same way as
the other ports on the part and the same way as all other Blackfin parts.
The MMRs are programmed slightly different and they cannot be used to
generate interrupts or wakeup a sleeping system. Since these guys don't
fit into the existing code, create a simple gpiolib driver for them.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
