The compiler.h header defines two macros INCBIN and
INCFILE that can be used to include binary files
into C sources. This patch fixes a few issues with them:
* The .align directive is equivalent to .p2align
on some architectures (ARM/AArch64) and to .balign
on others (x86). INCBIN previously used .align and
now uses .balign for correct alignment.
* .align 1 enforces a 2-byte alignment on ARM/AArch64,
which caused the _end symbol for the binary to be off
by 1 byte in some cases, which the macro previously
accounted for (incorrectly). With the correct .balign
directive the extra byte is never added, so the size
is now correctly computed without the -1 addend.
* INCBIN should end in a .previous directive
to restore the previous section, since the macro
starts with .section.
Bug: 115420908
Change-Id: I2149e21d6f7157369a7b374a51af23933bff6b39
Up until now the bottom part of ram has been identity mapped, left over
from initial bootstrapping. Set up two top level page tables: one with the
the identity map and one without. Once the kernel starts switch to the second
but keep the former around for bootstrapping secondary cpus.
Start adding support for user address spaces, currently mostly untested.
Still have to solve the problem of keeping the kernel parts of the page tables
in sync. Will probably preallocate all of the ones needed.
Forgot to test at DEBUG=0. Both of these are basically cases where
the new DEBUG_ASSERT_COND should be used, since the default DEBUG_ASSERT
will now always emit code that gets cleaned up in the optimizer.
Pull some assert macro improvements back from zircon.
Added new variants that let you pass an arbitrary message.
Move most of the inner routine into a helper, makes for slightly
smaller codegen.
Consolidate into a single library. Also renames legacy new.h to
the more standard new.
Possible that some C++ code will need to get this added to their
MODULE_DEPS.
Move out of inline routines since the body is relatively
large and to keep the disassembly clean. Have spinlocks
store the holder cpu + 1 instead of just 1. Add an appropriate
barrier to the release.
Uses the target/debugconfig.h file pattern laid down before,
which is a bit long in the tooth but for the moment still helps
us separate target from platform.
- pull in headers for essential modules
- init clocks, gpios, uart0 out of platform_early_init
- wire up debug getc/putc to uart0
- comment out "native" uart impl
- sys/cdefs is wanted for __CONCAT()
- version.h and config_autogen.h are generated by the pico sdk
- config_autogen expects to include board file
- instead define PICO_xyz in target rules.mk
Origin: https://github.com/raspberrypi/pico-sdk
Branch: develop
Change: ebb228bfeaec81dce3b8ebdbf6c7f5fd580e2e2f
This is the contents of src/boads, src/common,
src/rp2040, and src/rp2_common, excluding cmake
goop.
I suspect we'll trim it back closer to just the
register definitions, but for now leave it mostly
as-is to simplify updating as the pico sdk updates
and we figure out how deeply (or not) to integrate
it with lk.
Use the new github actions to replace the travis-ci builders which
seem to no longer work and are being removed.
This first stab is fairly rough, just matches the explicit matrix
that was in the travis-ci hooks, but at least gets back to a buildable
state again.
If the cpu is always in thumb mode there's really no reason to pass
this switch and it can and does foul up libgcc selection.
Possible it can be removed entirely since the build system doesn't
really support anything prior to armv7 or armv6 where thumb interwork
became implicit. Unclear if it'll cause linking issues to not have it
set, however.
- just a skeleton to get us started
- cpu feature config and irq names / vectab2 setup done
- pulled in the second stage for pico as a blob for now
- seems to be hard faulting out of systick setup in platform_init()
This provides a way for a platform or target to insert code or
other secret sauce in front of the vector table for targets that
need a second stage loader prepended or something like that.
- protocol now correctly reports SWO and SWCLK clock rates on set
- remove some debug printfs that were causing fw hangs (investigate later)
- allow setting a 1MHz SWCLK rate
- CMD_ATTACH now supports an argument to select one of several special
reset or escape sequences:
ATTACH_SWD_RESET: 60 HI, 4 LO, basic line reset
ATTACH_JTAG_SWD: escape sequence for JTAG -> SWD mode switch
ATTACH_DORMANT_TO_SWD: escape squence to exit dormant mode
ATTACH_SWD_TO_DORMANT: and go back again
- add special support for writing to DP TARGETSEL register
(response phase must be ignored), needed for SWD multidrop support
- bump protocol version to 1.3
- bump firmware version to 1.0 (it's long overdue)
The original tooling is lost to the mists of time and long-discarded
workstations, but this generates identical results and will enable
updating the code on the m0 sub-processor going forward. Yay.
The xxd tool generates two spaces of indent, not four.
Fix this existing file to match the tool output to make it easier
to detect changes to the resulting image header when rebuilt.
Instead of compiling each .c or .cpp or .S file into an equivalent .o file,
map it to a file with .c.o or .cpp.o extension.
IE,
foo.c -> foo.c.o
bar.cpp -> bar.cpp.o
Reason for this being that if you change the suffix of a file it'll
automatically pick it up and recompile.
-Add support for probing SBI extensions
-Switch to newer versions if present
-Add HBM extension which allows proper secondary cpu bootstrap
-Add support for secondary bootup via HBM.
Turns out that in some cases we can't really rely on a particular boot cpu id
so go ahead and simply dynamically assign cpu numbers by having each cpu
increment an atomic number in the very top of start.S. The first one in gets
the worm.
