Support mp lk start on RISC-V. Several changes throughout were required:
- Add signal in asm start to force secondary harts to wait for bss to be
cleared.
- Use mhartid in arch_curr_cpu_num, PLIC, and CLINT
- Use tp register as thread pointer instead of global variable.
- Support sending IPIs between harts using CLINT
- Add spinlock implementation
Most of changes were moving around where macros were defined, plus the
following:
- Remove requirement for floating point on RV64 to support booting
monitor core on U54 SoC.
- Add support for Debug LEDs on HiFive Unleashed Board
* Adds target tms570-launchpad, for TI TMS570 Launchpad Dev Kit
(https://www.ti.com/store/ti/en/p/product/?p=LAUNCHXL2-TMS57012)
* Adds CPU definitions for Cortex R4F (BE) CPU, implementing
ARMv7-R ISA. Does not yet add definitions for ARMv7 arch entry
functions.
* Board does not yet build - platform.c/uart.c are empty, no GIC
entry points provided.
The virt machine is a generic target, much like the arm virt machine.
Intended to be simple to use and a good target to run large systems like
linux on. At the moment simply support booting and simple uart and timer
support.
TL;DR most uses of lib/console.h -> lk/console_cmd.h
Move the part that lets a piece of code somewhere in the system to
define a console command from the actual lib/console api to start an
instance of the console. Move in almost every place the user of the
console command definition to the new header, lk/console_cmd.h which is
always in the include path.
Also remove most uses of testing for WITH_LIB_CONSOLE since you can
almost always just safely define it and then let the linker remove it.
Examples are include/platform.h -> platform/include/platform.h
include/target.h -> target/include/target.h
The old model generally considered these to be Always There includes,
but they're starting to stick out more and more so may as well actually
follow the model that most of the rest of the system follows.
Almost nothing changes here except moving braces to the same line as the
function declaration. Everything else is largely whitespace changes and
a few dangling files with tab indents.
See scripts/codestyle
-added support for bringing up the clocks and setting up the gpio bits
before starting the uart.
-add a proper target init routine
-add scripts to flash board via openocd
-fixed bug in riscv interrupt save state where it wasn't saving mstatus
on irq entry.
-comment out cycle enabling, not implemented on this core
-Add support for x86 legacy mode, designed for 386+ instead of pentium+
-Fixup uart driver to support com2
-Stub out PCI driver properly
-Fixup IDE driver to detect legacy disks
Currently targets qemu's sifive_e machine, which is a split flash/ram
machine, much like the Sifive HiFive1. Untested as of yet on a real
HiFive1.
Basic support including interrupts and architectural timers in place.
Preparation to allow other images to be presented to the display.
Separate definitions of display and image formats.
display_get_info no longer provides a framebuffer.
display_get_framebuffer allocates a framebuffer for convenience.
Review URL: https://codereview.chromium.org/1777783003 .
