Ox64 BL808 crashes with a Page Fault when we run `getprime` then `hello`. This is caused by the T-Head C906 MMU incorrectly accessing the MMU Page Tables of the Previous Process (`getprime`) while starting the New Process (`hello`).
To fix the problem, this PR flushes the MMU Cache whenever we point the MMU SATP Register to the New Page Tables. We execute 2 RISC-V Instructions that are specific to T-Head C906:
- DCACHE.IALL: Invalidate all Page Table Entries in the D-Cache
- SYNC.S: Ensure that all Cache Operations are completed
This is derived from the T-Head Errata for Linux Kernel. More details here: https://lupyuen.github.io/articles/mmu#appendix-flush-the-mmu-cache-for-t-head-c906
Modified Files:
- `arch/risc-v/src/common/riscv_mmu.h`: If needed, `mmu_write_satp()` calls `mmu_flush_cache()` (weak function) to flush the MMU Cache. (Like for T-Head C906)
- `arch/risc-v/src/bl808/bl808_mm_init.c`: Flush the MMU Cache for T-Head C906. Extend `mmuflags` from 32-bit to 64-bit to be consistent with `mmu_ln_setentry()`.
- `boards/risc-v/bl808/ox64/configs/nsh/defconfig`: Enable `ostest` in the Build Config. Update `CONFIG_BOARD_LOOPSPERMSEC` according to `calib_udelay`.
Ubuntu stock toolchain `gcc-riscv64-unknown-elf` complains about
current CMake system (see issue#11573). This tries to fix it so
that both newer XPack and stock toolchains can be used with CMake.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
Summary:
- I noticed that the hello app crashes due to
https://github.com/apache/nuttx/pull/11576
- This is a tentative fix to avoid the crash
Impact:
- None
Testing:
- Tested with qemu-8.2.0
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
If a TX DMA completion interrups a forground write.
The TX DMA completion can start a dma_send and it will
then followed by the forground write's dma_send
stoping the,then in progress DMA.
By atomicaly marking the tx dma busy, the forground
write will not perform the dma_send, and will only
enqueue the data. At the next TX dma completion any
data pending in the tx queue will be sent
- disable NSH_SYMTAB to avoid build errors with cmake.
- enable LIBM to avoid build errors with Ubuntu stock
gcc-riscv64-unknown-elf toolchain.
- use HELLO=y for easy use within qemu console.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
ESP32 is supported on NuttX starting from chip revision 3.0. This,
however, didn't prevent the user from using older chip revisions,
which caused unexpected behaviors. This commit checks chip revision
before finishing booting NuttX.
This commit is intended to update the EFUSE's register content and
update related configs:
- Remove duplicated configs from `esp32_soc.h`;
- Add missing header files from APB registers;
- Add missing macro definitions from EFUSE;
- Update related code to use the new macros;
The logic of the conditional expression that determines whether
the QH is a target QH or not is reversed in the process of canceling
a transfer in INPROGRESS state.
Therefore, the QH in INPROGRESS state is not released and subsequent
communication is not successful.
Checked with CDC-ACM driver and cu command.
Signed-off-by: Takeyoshi Kikuchi <kikuchi@centurysys.co.jp>
This slightly revised the USB host documentation and fixed typos
encountered in the document and some source files.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
To avoid build break:
ld: riscv-none-elf/lib/rv64imafdc_zicsr/lp64d/crt0.o: in function `.L0 ':
(.text+0x8): undefined reference to `__bss_start'
ld: (.text+0x10): undefined reference to `_end'
ld: (.text+0x36): undefined reference to `main'
collect2: error: ld returned 1 exit status
Signed-off-by: chao an <anchao@lixiang.com>
Newly added logging in `sched/task_exit.c` obsoletes the existing
ones in `arch/up_exit()`, thus remove the latter to reduce duplications.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
Previously k230 kernel build needs OpenSBI wrapping for use on
target, thus leading to larger program and memory overheads.
This patch adds alternative small overhead kernel build support.
Changes:
- in arch/risc-v/src/k230:
- k230_head.S entrance renamed for sake of NUTTSBI
- k230_irq.c add M-mode handling for NUTTSBI case
- k230_mm_init.c add L3 table for smaller RAM case
- hardware/k230_plic.h add PLIC_CTRL definition
- Make.defs use CHIP_ASRCS to fix entrance selection
- in boards/risc-v/canmv230/scripts:
- Make.defs add support for NUTTSBI case
Additions:
- in boards/riscv/canmv230/:
- scripts/ld-nuttsbi.script link script for NUTTSBI case
- configs/nsbi/defconfig config for NUTTSBI case
The artifact nuttx.bin from this configuration can be used directly
on target as OpenSBI wrapping is not needed.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
fix typo
It seems libcxx needs C++20 from 12.0.0 to 17.0.6: 3b625060fc
But we're setting CMAKE_CXX_STANDARD to 17, errors on my side:
nuttx/libs/libxx/libcxx/src/include/to_chars_floating_point.h:122:46: error: ‘bit_cast’ is not a member of ‘std’
122 | const _Uint_type _Uint_value = _VSTD::bit_cast<_Uint_type>(_Value);
| ^~~~~~~~
nuttx/libs/libxx/libcxx/src/memory_resource_init_helper.h:2:8: error: ‘constinit’ does not name a type
2 | static constinit ResourceInitHelper res_init _LIBCPP_INIT_PRIORITY_MAX;
| ^~~~~~~~~
nuttx/libs/libxx/libcxx/src/memory_resource_init_helper.h:2:8: note: C++20 ‘constinit’ only available with ‘-std=c++20’ or ‘-std=gnu++20’
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
This change adds support for the USB Transport Layer as described
in the bluetooth spec. Isochronous endpoints are not yet supported.
Because of limitations in the NuttX bluetooth stack, only one USB
device can be used. This driver will only allow one USB dongle to
use bluetooth.
A Laird USB BT4.2 dongle (from Mouser) was used for testing:
M/N BT851 1.0 1829, FCC ID:SQGBT850
lsusb: 04b4:f901 Cypress Semiconductor Corp. CYW20704A2
The following commands were used to test from the nsh prompt:
bt bnep0 scan start
bt bnep0 scan stop
bt bnep0 scan get
bt bnep0 info
The Linux gatttool was used to connect over wireless.
With the BDAddr found by "bt bnep0 info", start gatttool using:
gatttool -b BDAddr -I
Connect to the device using:
connect
Read the device name using the GAP device name UUID:
char-read-uuid 2a00
Part of the response is:
value: 41 70 61 63 68 65 20 4e 75 74 74 58
which is the string "Apache NuttX"
nuttx/driver/rpmsg: new folder, extract common rpmsg api in rptun.c to rpmsg.c.
rpmsg provide rpmsg_ops to each backend for specific implementation.
Signed-off-by: wangyongrong <wangyongrong@xiaomi.com>
new options to enable toolchain support for quadruple precision
(128 bits or 16 bytes) floating point if both the toolchain and
the hardware support it.
Signed-off-by: chao an <anchao@lixiang.com>
Task activation/exit logs are helpful for device bringup,
especially when user space nsh prompt doesn't show up.
Putting them here will allow cleaning of logs in multiple
up_exit() functions later.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
Some devices have special preparations before entering S-mode, thus
a hook is needed from NUTTSBI to give them the chance.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
