[pull] master from RT-Thread:master#720
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1.Add the necessary function declarations for SMP enablement and implement the corresponding functionalities, including rt_hw_secondary_cpu_up, secondary_cpu_entry, rt_hw_local_irq_disable, rt_hw_local_irq_enable, rt_hw_secondary_cpu_idle_exec, rt_hw_spin_lock_init, rt_hw_spin_lock, rt_hw_spin_unlock, rt_hw_ipi_send, rt_hw_interrupt_set_priority, rt_hw_interrupt_get_priority, rt_hw_ipi_init, rt_hw_ipi_handler_install, and rt_hw_ipi_handler. 2.In the two functions (rt_hw_context_switch_to and rt_hw_context_switch) in context_gcc.S, add a call to rt_cpus_lock_status_restore to update the scheduler information. 3.If the MMU is enabled, use the .percpu section and record different hartids by configuring special page tables; if the MMU is not enabled, record them directly in the satp register. Additionally, add dynamic startup based on core configuration.The .percpu section is only used when both ARCH_MM_MMU and RT_USING_SMP are enabled. However, there is a certain amount of space waste since no macro guard is added for it in the link script currently. 4.The physical memory of QEMU started in CI is 128MB, so RT_HW_PAGE_END is modified from the original +256MB to +128MB. Modify the SConscript file under the common64 directory to include common/atomic_riscv.c in the compilation process. Signed-off-by: Mengchen Teng <teng_mengchen@163.com>
What is 9PFS (https://en.wikipedia.org/wiki/9P_(protocol)): 9P (or the Plan 9 Filesystem Protocol or Styx) is a network protocol developed for the Plan 9 from Bell Labs distributed operating system as the means of connecting the components of a Plan 9 system. Files are key objects in Plan 9. They represent windows, network connections, processes, and almost anything else available in the operating system. rt-thread could share filesystem in VM mode with 9pfs such as QEMU... Signed-off-by: GuEe-GUI <2991707448@qq.com>
Signed-off-by: GuEe-GUI <2991707448@qq.com>
1. Kconfig import wtih DM 2. Add DM API for Drivers Signed-off-by: GuEe-GUI <2991707448@qq.com>
1. Fixup RT_DIV_ROUND_DOWN_ULL and RT_DIV_ROUND_UP_ULL, rt_do_div. 2. Support RT_DIV_ROUND_CLOSEST_ULL. 3. Make new DIV API. Signed-off-by: GuEe-GUI <2991707448@qq.com>
1. Add get id match data API. 2. Set I2C device name default before adding to bus. 3. Add Kconfig import for DM. Signed-off-by: GuEe-GUI <2991707448@qq.com>
Signed-off-by: GuEe-GUI <2991707448@qq.com>
Signed-off-by: GuEe-GUI <2991707448@qq.com>
Signed-off-by: GuEe-GUI <2991707448@qq.com>
Signed-off-by: GuEe-GUI <2991707448@qq.com>
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