Rework the irq code, to put more code in the C part. When interrupt
nesting is enable, Rockbox gets pretty unstable so disable it for now.
Change-Id: Iee18b539c80ea408273f6082975faaa87d3ee1b6
Unfortunately the hardware is not very helpful when changing voltage: in DCDC
mode we have the DC_OK_IRQ but in linear regulator mode, the only available
bit doesn't work when lowering the voltages. At the moment, simply sleep for a
little while before a better solution is found.
Change-Id: I89335873e9e42e5c6e9131f40db7839b008c021c
The old could trigger an immediate IRQ if for example the count was 0
when setting up the timer: since the count was updared *after* clearing the
IRQ, it could fire in between.
Change-Id: I0357b201655bc0e56425ffb249ca807525f30217
zenxfi2: add support for internal storage on the SD version
The code can now skip devices marked as PROBE if they fail to init, thus
making it possible to handle various kinds of internal storages. The current
code probably doesn't interplay nicely since it acquires pins and never
release them so it will probably break NAND code when it's ready but NAND code
is not ready yet anyway.
Change-Id: I4cb962de4215661e521743a3f511445dbbf28673
The current code does hazardous tweaks to the power subsystem: indeed if one
boots with USB plugged and some stub powers on the DCDC switch, it will fail.
Indeed, a hardware bug prevents from going back to linear regulators (see
errata) so we cannot expect to reach a known state (linreg on, dcdc off)
on each configuration and in particular, powering down the 4p2 rail in
such a configuration will result in a power brownout.
This commit works around this issue by not touching the initial power
configuration until USB is (un)plugged, which are the best spots to get
known states.
Change-Id: I8741a3995df8ae61ca1c887a3ecb7903d0ac5136
In most devices, the button ladder is not actually derived from VDDIO but
from a constant voltage source, making it very easy to read it. However on
some devices like ther ZEN X-Fi Style, the ladder is wired to VDDIO we
can be changed so it's crucial that the button driver correctly scales the
values wrt VDDIO.
Change-Id: Ifc11abe2838fa7d16d0d60ecd96964a8dc5ea6d7
The hardware watchdog automatically shutdown the device after 10s of
inactivity, being defined as 10s without the tick IRQ fired (aka braindead
device).
The software IRQ mechanism is more interesting: it uses a very high priority
timer setup as one-shot to trigger after 5s of inactivity (but IRQ still
enabled). When detected, it patches the running code to insert a SWI
instruction so that on interrupt return it will trigger a SWI and produce
a meaningfull backtrace to debug the deadlock. This should allow to debug
freezes in IRQ context.
Change-Id: Ic55dad01201676bfb6dd79e78e535c6707cb88e6
Rewrite IRQ handling to allow nested IRQs: on each IRQ entry, we save the
parameters on the (IRQ) stack and then switch to SVC mode (with its own
stack) and renable interrupts. Make sure interrupt is properly acknowledged
by using the read side-effect (RSE) mode and handle priority levels as well.
Change-Id: I3fd68289b430c56bdd256868939238ff268e42b4
This patch includes some refactoring:
- renaming according to Rockbox guidelines
- GPIO code merging, still with target defines
- some simplification in firmware/SOURCES
Change-Id: I7fd95aece53f40efdf8caac22348376615795431
This is the basic port to the new target Samsung
YP-R1, which runs on a similar platform as YP-R0.
Port is usable, although there are still
some optimizations that have to be done.
Change-Id: If83a8e386369e413581753780c159026d9e41f04
In b31c856 startup code section was renamed but boot.lds
linker scripts were not updated accordingly.
Change-Id: I9c9893ec2e199ac2555007a1d23e109ca0daea28
This reclaims ~6kB of ram.
Change-Id: Iafdc661b1cf4445669c08c79205043792b8d14c3
Reviewed-on: http://gerrit.rockbox.org/718
Reviewed-by: Marcin Bukat <marcin.bukat@gmail.com>
This should catch the case of buffer misuse which results
in corrupted cookie of next allocation. The check is performed
on move_block() so it may be a bit late.
There is buflib_check_valid() provided which checks the
integrity of all cookies for given context.
On DEBUG build with --sdl-thread this check is carried out
for core_ctx on every context switch to catch problems earlier.
Change-Id: I999d4576084592394e3dbd3bdf0f32935ff5f601
Reviewed-on: http://gerrit.rockbox.org/711
Reviewed-by: Thomas Martitz <kugel@rockbox.org>
The only true difference in this platform is the amount of iram
between MCF5249 and MCF5250. Instead of duplicating the file
simply use one with proper ifdefs.
Change-Id: Ifd56ebd2666813633502e3b5d83669424659c039
Reviewed-on: http://gerrit.rockbox.org/713
Reviewed-by: Thomas Martitz <kugel@rockbox.org>
Reviewed-by: Marcin Bukat <marcin.bukat@gmail.com>
