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memory access
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is located
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libcpu/risc-v/common64/mmu.c uses the external
symbol "__bss_end" (this symbol generally is
defined in the link script file) and depends
on the extern declaration of this symbol in
the bsp's "board.h". This is not a problem in
implementation, but it is not a good habit.
If this extern symbol is used locally, just
declare it locally should be better.
In this way, there will be no dependency of
the kernel core on the bsp header file. And
there will be no special requirements for the
bsp board code, such as the need to make
extern declarations for these "__bss_end"
symbols in "board.h".
This patch currently only explicitly externly
declares "__bss_end" inside libcpu itself.
The code of "#include <board.h>" is kept, because
the modification involved is too large, it is
necessary to clean up the bsp involved before
cleaning this include code line uniformly.
Signed-off-by: Chen Wang <[email protected]>
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* libcpu: cleanup undefined rt_hw_mmu_kernel_map_init
rt_hw_mmu_kernel_map_init() is declared in header files but
no definition found, cleanup the code.
Signed-off-by: Chen Wang <[email protected]>
* bsp: allwinner: d1: remove calling of rt_hw_mmu_kernel_map_init
rt_hw_mmu_kernel_map_init is an undefined function, calling it
is meaningless.
Signed-off-by: Chen Wang <[email protected]>
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Signed-off-by: Chen Wang <[email protected]>
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Signed-off-by: ligr <[email protected]>
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description: Using the vector instruction set to trigger
an illegal instruction exception when ARCH_SISCV_VECTOR=y.
analysis: When initializing the thread stack,
the rt_cw_stack_init function did not enable VS for SSTATUS.
Solution: When ARCH_SISCV_VECTOR=y,
increment the initial value of sstatus by 0x600(SSTATUS_VS).
Signed-off-by: Liu Gui <[email protected]>
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RISCV_S_MODE configuration only affects the code in
libcpu/risc-v/virt64, and the only bsp using this
libcpu is qemu-virt64-riscv.
Considering s-mode is the default mode RT-Thread
running on virt64 machine, it seems unnecessary to
make RISCV_S_MODE a Kconfig option.
Solution: Remove RISCV_S_MODE from Kconfig and define
it as a macro in the code in libcpu/risc-v/virt64.
Plus, due to this macro is only related to virt64, rename
RISCV_S_MODE to RISCV_VIRT64_S_MODE.
Update the .config/rtconfig.h in this patch.
Signed-off-by: Chen Wang <[email protected]>
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[libcpu]添加对riscv vector的支持
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* (fix) mmu: satp value should be 64-bit
Corrected the SATP register to ensure it uses the correct 64-bit format as required by the system architecture.
* use __asm__ instead of asm for the GNU C compiler
Co-authored-by: Shell <[email protected]>
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Co-authored-by: Shell <[email protected]>
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cpu is in exception (#9516)
Remove redundant '0x' from printed output
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Changes:
- create new folder name `common64` and save all common codes of rv64
inside
Signed-off-by: Shell <[email protected]>
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