NuttSBI have a simple ecall interface for the kernel, which make
it hard to add new SBI call for NuttSBI. So implement standard
ecall interface for NuttSBI and make life easier.
Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
The qemu-rv use a small init code for M mode in kernel build.
It is hard-coding and is difficult to change. Due to the fact,
introduce a already mature SBI implement (e.g OpenSBI) to
replace existing code is a better choice.
This patch introduce some change for qemu-rv:
1. use SSTC to provide time interrupt in kernel build
2. remove uncessary M mode trap.
For simplicity, this patch does not add support for booting
nuttx for any core, but force boot core to start core 0 and
let core 0 do the initialization.
Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
SSTC extension allows nuttx to implement S-mode timer directly,
which is useful for starting at S-mode.
Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
As `up_get_intstackbase` supports per cpu stack base, fix
the report value with the cpu specific one.
Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
It is misleading to allocate stack from static array and heap,
make all stack allocated from heap area.
Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
In some special chipsets, multiple CPUs may be bundled in one hardware
thread cluster, which results in hartid and cpuindex not being exactly
the same. The new option will decouple Scratch-based Per-CPU storage
with S-Mode to distinguish the real cpu index.
Signed-off-by: chao an <anchao@lixiang.com>
RISC-V provided fetch-and-op style atomic primitives as they scale
to highly parallel systems better than LR/SC or CAS. A simple
microarchitecture can implement AMOs using the LR/SC primitives,
provided the implementation can guarantee the AMO eventually
completes. More complex implementations might also implement AMOs
at memory controllers, and can optimize away fetching the original
value when the destination is x0.
Signed-off-by: chao an <anchao@lixiang.com>
Co-authored-by: Petro Karashchenko <petro.karashchenko@gmail.com>
This fixes names of program entry and linker script files so that to
support building kernel mode apps using CMake and export package.
flat and protected mode should be the same as before.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
In file included from common/addrenv.h:33,
from common/riscv_initialstate.c:36:
common/riscv_initialstate.c: In function 'up_initial_state':
common/riscv_internal.h:136:16: warning: declaration of 'regval' shadows a previous local [-Wshadow]
136 | uintptr_t regval; \
| ^~~~~~
common/riscv_initialstate.c:74:12: note: in expansion of macro 'READ_CSR'
74 | regval = READ_CSR(CSR_VLENB);
| ^~~~~~~~
common/riscv_initialstate.c:63:13: note: shadowed declaration is here
63 | uintptr_t regval;
| ^~~~~~
Signed-off-by: chao an <anchao@lixiang.com>
LLVM supports (to various degrees) a number of experimental extensions.
All experimental extensions have experimental- as a prefix. There is
explicitly no compatibility promised between versions of the toolchain,
and regular users are strongly advised not to make use of experimental
extensions before they reach ratification.
Fix compile error:
riscv64-unknown-elf-clang: error: invalid arch name 'rv64gcv_zfh_zvfh', requires '-menable-experimental-extensions' for experimental extension 'zvfh'
Signed-off-by: chao an <anchao@lixiang.com>
Currently Simple Boot image have fixed 2 ROM segments and
2 RAM segments, then the parsing iterator must stop when all
ROM segments are found.
Signed-off-by: Almir Okato <almir.okato@espressif.com>
Using CSR name depends on compiler support heavily, but CSR
encoding does not have this problem. It also make it easy to
add new CSR support even if the compiler does not support.
Unify CSR access by using the CSR encoding macro.
Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
This patch adds more debug related CSR definitions
to arch/risc-v/include/csr.h.
These definitions are from the RISC-V Debug Specification
Version 1.0 rc1 (https://github.com/riscv/riscv-debug-spec).
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
Extracting global variable information using scripts:
kasan_global.py:
1. Extract the global variable information provided by the -- param asan globals=1 option
2. Generate shadow regions for global variable out of bounds detection
Makefile:
1. Implement multiple links, embed the shadow area into the program, and call it by the Kasan module
Signed-off-by: W-M-R <mike_0528@163.com>
RTC data was not being correctly placed on RTC's memory data due to
linker issues. Also, the image's RTC memory segment was not being
properly parsed by the bootloader.
adjust link options for userspace elf
specify system libs and apps lib to only link with nuttx target in flat build mode
Signed-off-by: xuxin19 <xuxin19@xiaomi.com>
If a context switch occurs in syscall, the g_running_task need to be recorded for assert logic.
This copies the logic from arm platforms
Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
We shouldn't panic the kernel when a user task excepts, we can just kill the user task and
it's children. Do this by returning to _exit() in kernel context.
Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
Currently only FLAT mode development can enjoy cmake build system. This
patch tries to add initial kernel mode support. It can build NuttX kernel
and libproxies.a, the latter will be further checked though.
This can already help to build an AMP remote node image as it can share
userland apps living in the AMP master node.
Major changes:
- in top folder:
- CMakeLists.txt adjust for KERNEL mode, separate from PROTECTED mode.
- in `syscall`:
- CMakeLists.txt add mksyscall target for stubs/proxies generation
- in `syscall/stubs`:
- CMakeLists.txt use dependency to mksyscall
- in `syscall/proxies`:
- CMakeLists.txt use dependency to mksyscall
- in `arch`:
- CMakeLists.txt separate KERNEL from PROTECTED mode.
- in `arch/risc-v/src`:
- CMakeLists.txt separate from PROTECTED mode, add sub folders.
- in `arch/risc-v/common`:
- CMakeLists.txt add sources and sub-folders for KERNEL mode.
- in `arch/risc-v/k230`:
- CMakeLists.txt add sources for KERNEL mode.
- in `boards/risc-v/k230/canmv230/src`:
- CMakeLists.txt adjust k230 specific scripts for kernel mode.
New additions:
- in `arch/risc-v/src/nuttsbi/` add CMakeLists.txt
- in `arch/risc-v/src/common/supervisor/` add CMakeLists.txt
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
This patch fixes the issue that k230_hart_is_big() doesn't work in
S-mode. It also adds convenient debug macros to ease debugging process
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
This patch simplifies PMP handling for K230 using common APIs.
It also uses `g_misa` variable to expose the MISA issue.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
