This is preparation to use kernel stack for everything when the user
process enters the kernel. Now the user stack is in use when the user
process runs a system call, which might not be the safest option.
Updated alt1250 driver with regarding to the following changes.
- Add LTE hibernation feature
- Split source code per module
- Some refactoring
- Some bug fixes
This also removes kconfig warning:
Normalize icicle/knsh
.config:248:warning: symbol value '' invalid for ARCH_KMAP_VBASE
.config:248:warning: symbol value '' invalid for ARCH_KMAP_VBASE
This is a minimalistic SBI implementation for NuttX.
Provides a single service for now:
- Access to machine timer
Provides a start trampoline to start NuttX in S-mode:
- Exceptions / faults are delegated to S-mode.
- External interrupts are delegated to S-mode.
Machine mode timer is used as follows:
- The timer compare match register reload happens in M-mode, via
call gate "riscv_sbi_set_timer"
- The compare match event is dispatched to S-mode ISR, which will
notify the kernel to advance time
- Clearing the STIP interrupt does not work from S-mode,
so the call gate does this from M-mode
The only supported (tested) target for now is MPFS.
ICMP's conn->dev is changing in icmp_sendmsg, when sending to different
address, or when error occurs (like NETDEV_DOWN). Then the poll callback
cannot be dropped from previous dev in free, because the dev is wrong.
So add dev to struct icmp_poll_s just like struct udp_poll_s.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
CortexR52 can have a optional FPU.
- VFPv3 with FP16
- Option 1: 16 x double-prevision registers - -mfpu=vfpv3-d16-fp16
- Option 1: 32 x double-prevision registers - -mfpu=vfpv3-fp16
This commit aims to provide a way to get the current applied defconfig on runtime by providing CONFIG_BASE_DEFCONFIG that is updated when the configure and build scripts are run.
Summary:
- I noticed that ./tools/configure.sh fvp-armv8r:nsh_smp shows
warning: (ARCH_CHIP_FVP_R52 && ARCH_CHIP_FVP_R82) selects ARMV8R_HAVE_GICv3 which has unmet direct dependencies (ARCH_ARM && ARCH_ARMV8R)
- I think ARMV8R_HAVE_GICv3 is only used for aarch32.
- This commit fixes this issue.
Impact:
- None
Testing:
- Tested with nsh_smp on FVP
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
This adds functionality to map pages dynamically into kernel virtual
memory. This allows implementing I/O remap for example, which is a useful
(future) feature.
Now, the first target is to support mapping user pages for the kernel.
Why? There are some userspace structures that might be needed when the
userspace process is not running. Semaphores are one such example. Signals
and the WDT timeout both need access to the user semaphore to work
properly. Even though for this only obtaining the kernel addressable
page pool virtual address is needed, for completeness a procedure is
provided to map several pages.
During initialization it isn't possible to use up_puts once it's
protected against concurrent access through a mutex lock. Instead,
using up_putc makes it similar to ESP32S2 and ESP32S3 and perfectly
fits for showprogress usage.
