Summary:
- This commit adds MMU support for qemu-rv
- Please note that mtimer is disabled for S-mode because
the mtimer needs to be accessed in M-mode
Impact:
- qemu-rv only
Testing:
- Tested with rv-virt:knsh64 (will be pushed later)
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
This provides an example of Asymmetric Multiprocessing (AMP). The
master from Linux sends pings that this NuttX echoes back. The system
uses RPMsg from OpenAMP.
The Inter-Hart Communication module is present in the vendor's software
stack with the tag "2021.11". The software is present on github at the
polarfire-soc project. The following conditions must be met:
1. FPGA programmed with 2021.11 software
2. HSS (Vendor bootloader) with 2021.11 software
3. U-boot and Linux kernel from 2011.11 software
Currently the IHC works as a slave only on the hart number 4.
On the NuttX side, this patch uses rptun that incorporates rpmsg and
virtio. If it used only rpmsg and virtio, the future maintenance would
likely be much heavier. Using rptun also simplifies many things.
Upon success, the master side from Linux may issue an example test:
root@icicle-kit-es-amp:/opt/microchip/amp/rpmsg-pingpong# ./rpmsg-pingpong
However, the rpmsg-pingpong.c (compiled on target with gcc), may need to
be modified as seen below to match the device id:
- char *rpmsg_dev="virtio0.rpmsg-amp-demo-channel.-1.0";
+ char *rpmsg_dev="virtio0.rpmsg-amp-demo-channel.-1.1024";
This work uses a separate linker script. Due to a bug yet unknown to date,
a small NuttX, when loaded by the vendor HSS bootloader, will cause the
Linux kernel to hang at boot. Thus, the binary size is increased with
a section 'filler_area' whose only purpose is to increase the image size
so that the Linux kernel will boot up.
Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
In file included from drivers_initialize.c:25:0:
/home/wangbowen/project/community/wbw_nuttx/nuttx/include/nuttx/crypto/crypto.h:74:20: error: expected ')' before 'void'
Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
Implement a generic access rights modification procedure instead
of the procedures that only do one thing (enable/disable write)
to one section (text).
This reverts commit 848d1ef0b7.
It doesn't make sense because the generated file just have names of
symbols as strings. Nothing to worry about builtins.
Summary:
- This commit adds R_RISCV_JAL support to arch_elf.c
- The code only checks the immediate value but does not relocate it
because it is done by the compiler.
Impact:
- None
Testing:
- Tested with rv-virt:knsh64 (not merged yet)
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Deleting a task from another task's context will not do, so shut
this gate down for BUILD_KERNEL. In this case if a task wants another
task to terminate, it must ask the other task to politely kill itself.
Note: kthreads still need this, also, the kernel can delete a task
without asking.
1. using armv6-m arm_irq();
2. simplify the interrupt number get process;
3. To improve the performance, move common exception code to ram_code.
Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
fix warning:
common/arm_createstack.c: In function 'up_create_stack':
common/arm_createstack.c:154:11: warning: format '%d' expects type 'int', but argument 3 has type 'size_t'
Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
Summary:
- Because a context switch issue still exists with FPU,
it should be enabled only if EXPERIMENTAL=y
Impact:
- None
Testing:
- Tested with ostest
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
1. add pulse count support for pwm0;
2. add more detailed config for pwm;
3. pwm configuration and start process optimize;
4. tlsr82/Kconfig format;
Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
Summary:
- The configuration is no longer needed because Kconfig has
been fixed in the previous commit
Impact:
- None
Testing:
- Tested with QEMU
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Summary:
- TIVA_WITH_QEMU is used to run the NuttX with QEMU
- The configuration should not depend on TIVA_ETHERNET
- This commit fixes this issue
Impact:
- None
Testing:
- Tested with QEMU
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
_xtensa_sig_trampoline is returned to after a context switch and not called
by the usual Window call instructions (call4, call8 and call12),
thus does not need the entry instruction. Furthermore, the ENTRY instruction
in this case is messing up the backtrace as it creates an extra frame.
Signed-off-by: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>
Do not call strlen() here. Old implementation iterated
over string twice, if searched for position was at the
beginning. This commit changes strrchr() to scan string
only once, regardless of input.
Signed-off-by: Juha Niskanen <juha.niskanen@haltian.com>
1. fix typo spilock -> spinlock
2. fix build break
sched/sched_note.c: In function ‘note_spincommon’:
sched/sched_note.c:435:3: error: aggregate value used where an integer was expected
435 | note.nsp_value = (uint8_t)*spinlock;
| ^~~~
Signed-off-by: chao.an <anchao@xiaomi.com>
