FreeCalypso > hg > fc-tourmaline
view doc/Luna-notes @ 223:740a8e8fc9d7
startup sync logic rework for the new PWON button boot scheme
Previously we added logic to the MMI task to hold off PEI init until
R2D is running, and then extended that condition to wait for FCHG
init too. However, the dependencies of MMI upon R2D and FCHG don't
start until mmiInit(), and that call is driven by Switch_ON() code,
hence the wait for R2D and FCHG init can be made in that code path
instead of the MMI task. Furthermore, with our new way of signaling
PWON button boot to MMI, we need a new wait to ensure that the MMI
task is up - previously this assurance was provided by the wait for
Kp pointers to be set.
Solution: revert our previous PEI init hold-off additions to MMI,
add a new flag indicating MMI task init done, and put the combined
wait for all needed conditions into our new PWON button boot code
in power.c.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Tue, 27 Apr 2021 06:24:52 +0000 |
| parents | a62e5bf88434 |
| children |
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FreeCalypso Luna phone handset UI development platform consists of these 3 components: * A Caramel-type Calypso motherboard, either iWOW DSK or FC Caramel2 * An LCD carrier board, currently using HaoRan HT020K1QC36S LCD module * A 5x5 keyswitch matrix board for the keypad function This Luna is our primary official platform for FreeCalypso phone handset UI development. The UI code we got from TI comes in two interesting versions: * Big color version: 176x220 pixels, 16-bit color * Small B&W version: originally 84x48 pixels, we are extending it to 96x64 pix (Originally there was also a third version, large 176x220 pix B&W, but we find it uninteresting and we've removed it from our supported set. It was really nothing more than a hack to display a minimal-effort derivative of the original small B&W UI on the large D-Sample LCD, so we are not removing anything of any real substance here.) FC Luna hardware is required for anyone who wishes to work on the phone handset UI project in FC Tourmaline: it is the only target platform that can display both versions of our work-in-progress UI firmware. Mot C1xx and other similar phones have small LCDs that can only display the small B&W version of our TI-based UI, and in the Mother's opinion working solely on the smallbw version to the exclusion of the bigcolor version is not acceptable.