riscv: pmp: Add macro to convert DT memory attributes to PMP permissions #97499
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zephyrbot
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Introduce the DT_MEM_RISCV_TO_PMP_PERM macro to translate Device Tree RISC-V memory attributes (DT_MEM_RISCV_TYPE_IO_R, DT_MEM_RISCV_TYPE_IO_W, DT_MEM_RISCV_TYPE_IO_X) into their corresponding RISC-V PMP permission bits (PMP_R, PMP_W, PMP_X). This allows for a clear and standardized way to define PMP regions based on Device Tree properties. Added a test suite for RISC-V PMP utilities, including a test case to verify the correctness of the DT_MEM_RISCV_TO_PMP_PERM macro across various attribute combinations. Signed-off-by: Firas Sammoura <[email protected]>
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jimmyzhe
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Oct 15, 2025
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| #define DT_MEM_RISCV_TO_PMP_PERM(dt_attr) ( \ | ||
| (((dt_attr) & DT_MEM_RISCV_TYPE_IO_R) ? PMP_R : 0) | \ | ||
| (((dt_attr) & DT_MEM_RISCV_TYPE_IO_W) ? PMP_W : 0) | \ | ||
| (((dt_attr) & DT_MEM_RISCV_TYPE_IO_X) ? PMP_X : 0)) | ||
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ok. I added it into #96241
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Introduce the
DT_MEM_RISCV_TO_PMP_PERMmacro to translate Device TreeRISC-Vmemory attributes (DT_MEM_RISCV_TYPE_IO_R,DT_MEM_RISCV_TYPE_IO_W,DT_MEM_RISCV_TYPE_IO_X) into their corresponding RISC-V PMP permission bits (PMP_R,PMP_W,PMP_X).This allows for a clear and standardized way to define PMP regions based on Device Tree properties.
Added a test suite for RISC-V PMP utilities, including a test case to verify the correctness of the
DT_MEM_RISCV_TO_PMP_PERMmacro across various attribute combinations.