refactors all the ugly "pendingX" atomic operations into a single "Event" subsystem/interface thing with two operations
moves all existing code to use this instead
also changes the "bkpt" macro to also indicate unreachable code
- completely moved MCU interrupt handling outside of the critical section
- refactored a bit of the PXI code and command names
- merge the I2C read and write cmds to be one
- remove SET_VMODE cmd, now it's always initialized to BGR565 on boot and to RGB565 on firmlaunch
- atomic-ize more stuff
We use a stack-allocated u32 to store a temporary word that gets memcpy'd from a potentially unaligned buffer, but the size of the copy could be less than 4 bytes, therefore leaving garbage in the upper bits of said word. This fixes CODEC in Corgi3DS.
fetching the thread id requires coprocessor access which means doing funky switches between thumb and arm -
it's faster to just allocate a single pointer and do an indirect load when necessary
- properly performs gpu/backlight reset
- nukes vram so the initrd had to be moved to arm9 memory, and have its size (at least temporarily) limited to 256k
- removed most of lodepng's optional features
- lodepng now uses the already existing CRC32 code instead of using its own copy
- fixed GIC interrupt priority
- reset LEDs on boot
- add code to set the notification LED
- add a PXI command to verify the NVRAM is actually online
- notify the ARM9 about the shell state through the HID thing
- circle pad simulates dpad keys (up, right, down, left)
- raw touchscreen data is provided but currently unused
- added a simple shared memory region thing
- fixed the 10ms delay to be _after_ the backlights are turned on, thanks to profi again
as always, other stuff I probably forgot about
- moved brightness control to the ARM11
- moved HID updating to the ARM11
- moved screen init from ARM9 to the ARM11, always performed unconditionally
- removed unnecessary SCREENINIT and SET_BRIGHTNESS pxi commands
and other stuff I probably forgot about
- moved common.h from the ARM9 tree to the common code tree
- does proper deinit now on the ARM11 side
the bug that caused it to fail to launch some FIRMs has been fixed - it can even boot stock FIRMs
- maps a regular ARM-style exception vector table instead of using the bootrom vector redirection
features a ton of bugs because I'm missing something, it actually manages to boot fb3DS v1.2 and BAX fine, but fails to boot itself
- added initial SCU twiddling
- added very untested and unusable SMP code
- fixed race condition that happened on boot
- added initial MMU code (just super basic identity mapping, no caching set up or anything)
- enabled some of the fancier ARMv6 features
- reorganized ARM11 files into their own folders
- possibly more stuff I'm forgetting about
- moved I2C code to the ARM11 (with an ugly hack that MUST be fixed)
- reworked the PXI protocol to have lower latencies and remove any potential async support
