There are at least two types in the ADT related to USB,
but there's a decent chance that there are even more
required for other devices:
* A simple tunable that applies to a whole device node
and all its MMIO ranges specified in the "reg" property.
This one seems to just be mask32.
* A slightly more complex tunable that applies to a single
MMIO range specified in the "reg" property. So far I've
only seen 32 bit masks but the format looks like it should
also support 8,16 and 64 bit masks.
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Now uses the same devicetree source as the kernel, verbatim, with the
required subset of kernel dt includes.
Signed-off-by: Hector Martin <marcan@marcan.st>
Turns out we had a bunch of silly dependencies on libc headers that are
not included with freestanding compilers. Fix all this and change the
CFLAGS to exclude libc headers and only include the built-in compiler
path.
Add our own versions of assert.h, errno.h, limits.h, and move malloc.h
and string.h together into a new path used as -isystem, so these headers
can be included using #include <>.
Remove a bunch of other dependencies in third-party code.
Add a strnlen function.
Disable building the libfdt overlay code for now, as it needs a strtoul
implementation. We can throw that in if/when we decide to use overlays.
Signed-off-by: Hector Martin <marcan@marcan.st>
heapblock is a simple `sbrk` style implementation, also useful as an
"endless" decompression buffer. dlmalloc is used on top as a malloc
implementation.
This also changes how the Python side manages its heap. We still use a
python-side malloc implementation (since this is faster), and we put the
Python heap at the m1n1 heap + 128MB, without allocating it.
Hopefully this should never step on anything m1n1 neads, and avoids
having to manage freeing across Python script calls.
Signed-off-by: Hector Martin <marcan@marcan.st>
