rockbox/rbutil/mkimxboot/dualboot, branch master

imx233: add capability to boot OF or updater instead of Rockbox

2016-12-12T11:03:08+00:00

This commit adds the necessary code in the dualboot stub (bootloader) to
let rockbox control the boot process. In particular, rockbox can now choose
if the next boot will be normal (boot rockbox or OF on magic key), to OF
or to updater.

The intents (to be added in follow-up commits) are:
1) Let the user more easily reboot to the OF. On some targets it is not trivial,
especially in USB mode.
2) Automatically reboot to updater when the user drop firmware.sb at the root
of the drive (currently, the user needs to do that in OF USB mode)
3) Document this OF magic

Change-Id: I86df651dec048c318c6a22de74abb8c6b41aa9ad

imx233: fix dualboot, forgot a file

2016-09-22T20:31:29+00:00

Change-Id: I8d5817d75f76a201c3a8b76db0d1e11f71548179

imx233: fix dualboot stubs

2016-09-22T20:03:31+00:00

They did not compile anymore after the register hearder rework. This change
only fixes the syntax, the generated binaries are exactly identical.

Change-Id: Iec2347aa3deb1ddfe2ca36f0db1e481c4e2d329c

mkimxboot: remove code for NWZ-370/380

2016-05-25T22:29:04+00:00

Since the stub code is shared with NWZ-360, it enables the pullup for the
hold button, but the NWZ-370/380 doesn't have a hold button so don't compile
this code in, it could potentially have unexpected effets or increase consumption

Change-Id: I28c8aa40fc7f9373593ff105fb6df557a6f57ccd

mkimxboot: make cross compiler for dualboot stubs overridable

2016-05-25T22:28:25+00:00

Change-Id: I90d2048f622b355eae7091e536b940b2ac828583

mkimxboot: don't forget to select LRADC source before reading

2014-02-10T22:14:25+00:00

Change-Id: I3435857f48580d7b3bf9363a2eed96738fbda69a

mkimxboot: tool can now recreate a stub to recover from very low battery

2014-01-21T18:01:34+00:00

Several devices, including the Fuze+ have great trouble recovering from
very low battery states, even in the presence of USB power. This is partly
due to buggy Sigmatel boot stubs and Rockbox bootloader doing unsafe power
operations on boot (should be fixed soon).  In such a state, it is impossible
to boot either the OF and Rockbox, so only the recovery mode is available.
With this commit, mkimxboot can now create a very small stub which only
does one thing but does it well: setup charging to recover from any situation.
It does not provide a fancy charging screen or whatever, screen will just
stay black and the device will slowly charge at ~100mA. When the battery is
back to a normal level, just unplug and boot normally.

Change-Id: Ib50880af85ed1f4f64a7eed0f2221e73c889c351

Initial commit for the ZEN X-Fi Style

2014-01-21T17:52:28+00:00

Change-Id: Ib25a357a7bafd2ef25f273cadff70fafbd8d4661

sonynwz: rework dualboot mechanism

2013-09-26T18:19:30+00:00

Now boot to RB if play/pause is pressed during 1 second, and to OF if
back is pressed 1 second. Otherwise power off. If hold is on, also power
off. In USB and alarm context, always boot and back determines OF vs RB.

Change-Id: Ie1d6c971901d6473255461cc7d71a5ee3177ecad

mkimxboot: always clean up dualboot elf files

2013-09-26T18:14:09+00:00

Change-Id: I80ed1af784aa80bec9fa0b1e9322f25e69672510