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74 commits

Author SHA1 Message Date
bunnie
8b83fb7c65 remove heapless, go to libstd for all collections!!!! 
*fistpump*
 2021-08-04 01:25:32 +08:00
Sean Cross
b86e0a65cd services: recognize xous as a hardware OS 
Support `xous` as a valid OS. This allows us to build the entire kernel
under this target.

Signed-off-by: Sean Cross <sean@xobs.io>
 2021-08-02 18:11:48 +08:00
bunnie
7e7ae82156 pivot spinor implementation 
realizing some core assumptions were wrong, so, scrapping and
restarting
 2021-07-15 23:00:50 +08:00
bunnie
aa967a5a17 quiet up hosted mode build warnings 2021-06-18 22:37:08 +08:00
bunnie
fadc9c29ab Merge remote-tracking branch 'origin/master' into bunnie-dev 2021-06-02 03:59:25 +08:00
bunnie
7c55925926 intermediate check-in on wfi 2021-05-30 23:07:16 +08:00
bunnie
0e1464b815 turn off wdt for now 2021-05-30 04:50:54 +08:00
bunnie
30aa794f30 add reference counting on connections between servers 
the connection number is re-used for all objects created
within a process space, so you can't `Drop` the connection
immediately when an object goes out of scope. You have to
make sure all instance of the object go out of scope. This
patch adds reference counting to all the objects so that
the `Drop` function works as intended.
 2021-05-21 16:24:30 +08:00
Sean Cross
b617ed2f32 services: ticktimer-server: explicitly specify opcode numbers 
These opcode numbers will be baked in at the ABI level for several
libraries such as libstd.

Signed-off-by: Sean Cross <sean@xobs.io>
 2021-05-20 12:47:02 +08:00
Sean Cross
eb7895d601 xous: add a return code to TerminateProcess 
As part of this refactor, make `terminate_process()` a divergent call.

Signed-off-by: Sean Cross <sean@xobs.io>
 2021-05-20 11:01:00 +08:00
bunnie
391122823d refactor heapless version in attempt to debug issue that cropped up in xous-names 
somehow, updating the toolchain has broken the FnvIndexMap implementation
 2021-05-08 18:44:23 +08:00
bunnie
0ca2f58c6e add a note to indicate if we're in cold sleep 
it's not terribly aesthetic right now, but we can fix that later.
 2021-05-02 03:36:54 +08:00
bunnie
c7f1fe0817 cleanup after debugging ticktimer 
the problem was that the load signal was not being respected
by the hardware, small patch to FPGA required but now all is OK.
 2021-05-01 20:56:12 +08:00
bunnie
b28dff273f intermediate checkin figuring out ticktimer issue 
seems to be a hardware problem with the loading routine
 2021-05-01 19:13:22 +08:00
bunnie
087bb39ea7 chase down some bugs 
noted there is a heisenbug on the ticktimer, it only manifests
when the log level is at info. go figure!
 2021-05-01 02:26:28 +08:00
bunnie
46fe3885dc cleanup more turds left over during the bringup of suspend/resume 2021-05-01 00:35:32 +08:00
bunnie
640ddb48e8 suspend/resume now works to hardware 2021-04-30 19:29:36 +08:00
bunnie
a55735fb1f add llio to suspend/resume set 2021-04-29 23:15:47 +08:00
bunnie
6e1e74ed84 a minimal but successful touch-and-go suspend/resume cycle 2021-04-29 16:37:43 +08:00
bunnie
bbcf698ff3 flesh out a simple touch-and-go suspend/resume demo loop 
now the debuggening begins. lord help us.
 2021-04-29 02:56:53 +08:00
bunnie
3043769170 move the os_timer into the susres server, so we can suspend it 
also clean up various syntax errors
 2021-04-28 15:38:56 +08:00
bunnie
d62f936454 start fleshing out the susres server 2021-04-27 02:53:22 +08:00
bunnie
655c92a36c clean up ticktimer susres prototype code 2021-04-27 00:40:50 +08:00
bunnie
061284ec5f debugging BOOST mode glitch issue 
Here's an arcane bug for you:

When powering down, the Spartan 7 3.3V I/O drivers will
output a roughly 800us wide glitch as 3.3V falls below around
1.7V, if the 0.95V core voltage comes down first (which it does
because we have an active discharge on 0.95V, but not on 3.3V).

In this case, it's just wide and high enough to cause the
BOOST mode line to engage, which takes the BOOST output
and ties it to VBUS, which is just enough for the system to
think you're powering it back on again. Which is not what
you want when powering down.

The ultimate fix was to put a heftier pull-down on the BOOST
line so that it can't trip the BOOST output into the VBUS.
Another option could be more active discharge FETs, but that
would require a full board spin and we are already at certification,
so we'll stick with the stronger pull-down on BOOST. It seems to
be a robust fix in the worst corner cases we can find.

The downside is that when powering an external USB device,
you are burning an extra 30mW of power overcoming the pull-down,
but typically, any external USB devices plugged into Precursor
will burn far in excess of that, so the delta should be negligible.
 2021-04-23 15:33:14 +08:00
bunnie
1378203427 clean up warning 2021-04-16 01:13:56 +08:00
bunnie
024a072a7c absorb WDT fix to eliminate a race condition 2021-04-15 18:40:00 +08:00
bunnie
93400df67c an initial cut at fcc test commands 2021-04-15 04:10:47 +08:00
bunnie
45c90659e5 rtc first draft 2021-04-08 02:30:57 +08:00
bunnie
ca349ec1b0 clean up minor bugs and other issues 2021-04-06 22:38:11 +08:00
bunnie
8c12dbe2af found a bug. 2021-04-06 01:52:26 +08:00
bunnie
9ba2fb134c refactor most major modules, but Xous now crashes 2021-04-05 23:50:00 +08:00
bunnie
25dc27f2f7 add drop implementation to servers 2021-04-02 22:01:40 +08:00
bunnie
da255cc1ab use macro expansion for argument extraction of scalars 2021-04-02 15:38:38 +08:00
bunnie
5a6ce66d7e clean up log messages now that we can identify the logging source 2021-04-02 03:10:13 +08:00
bunnie
68b9addd45 redo ticktimer/trng to use the new convenience functions 2021-04-02 02:45:00 +08:00
bunnie
2407f17267 fix typos 2021-04-01 17:20:28 +08:00
bunnie
dc2519c5ef trying out new API names 2021-04-01 03:47:10 +08:00
bunnie
f35d478cf0 attempt to refactor xous_names 2021-03-29 04:35:11 +08:00
bunnie
e889765caf refactor the Ticktimer API. 2021-03-28 18:14:41 +08:00
bunnie
bb3d96de27 Merge branch 'master' of https://github.com/betrusted-io/xous-core into HEAD 2021-03-25 02:37:58 +08:00
Sean Cross
d16d0c9bd8 ticktimer-server: set quantum to 10ms 
This is an experiment to see if this shorter time improves things.

Signed-off-by: Sean Cross <sean@xobs.io>
 2021-03-23 21:43:35 +08:00
Sean Cross
e624c184cd ticktimer-server: rewrite sleep server as deadline 
Use deadlines for sleep, rather than calculating the amount of remaining
time.

This keeps time consistent, because it means we don't have to
recalculate all sleeps whenever one expires.

It also allows us to take advantage of the hardware which will fire an
interrupt if we schedule a wakeup in the past.

Signed-off-by: Sean Cross <sean@xobs.io>
 2021-03-23 21:41:30 +08:00
Sean Cross
89cf0c1ab1 ticktimer-server: run rustfmt on Cargo.toml 
Signed-off-by: Sean Cross <sean@xobs.io>
 2021-03-23 21:37:52 +08:00
bunnie
184a284da5 sleep_ms() bug exhibitition 2021-03-18 17:34:48 +08:00
bunnie
93a7567618 ticktimer prints its PID now 2021-03-01 13:46:02 +08:00
bunnie
ea78de8014 convert all services to use xous-names server 2021-01-09 02:12:01 +08:00
bunnie
bdbe8f8288 intermediate checkin 2021-01-05 04:40:34 +08:00
bunnie
b7263f7ef0 Merge remote-tracking branch 'origin/master' into hardware 2021-01-04 03:19:23 +08:00
Sean Cross
7b50d00eb8 repo: run cargo fmt 
This reformats line endings to be consistent, and reinforces the
contents of `.gitattributes`.

Signed-off-by: Sean Cross <sean@xobs.io>
 2021-01-03 18:31:51 +08:00
bunnie
b9a31f7d99 try to layer in the fcc agent 2020-12-31 19:31:12 +08:00