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feat(psram): Add unencrypted region for psram for esp32s31

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C.S.M
2026-07-07 10:42:45 +08:00
parent fbdf6d7427
commit 048b4dde0c
4 changed files with 27 additions and 1 deletions
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components/hal/esp32s31/include/hal/mmu_ll.h
+18
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@@ -587,6 +587,24 @@ static inline uint32_t mmu_ll_entry_id_to_vaddr_base(uint32_t mmu_id, uint32_t e
return mmu_ll_laddr_to_vaddr(laddr, type, (mmu_id == MMU_LL_FLASH_MMU_ID) ? MMU_TARGET_FLASH0 : MMU_TARGET_PSRAM0);
}
/**
* Write a PSRAM MMU entry without the SENSITIVE bit, used only for the
* carved-out unencrypted region (see CONFIG_SPIRAM_ENC_EXEMPT).
*
* No anti-FI check: the SENSITIVE bit is intentionally clear, and an FI flip
* that sets it would force decryption of plaintext data (garbage, fails safe).
*/
__attribute__((always_inline)) static inline void mmu_ll_write_entry_no_enc(uint32_t mmu_id, uint32_t entry_id, uint32_t mmu_val)
{
HAL_ASSERT(mmu_id == MMU_LL_PSRAM_MMU_ID);
mmu_val |= SOC_MMU_PSRAM_VALID;
mmu_val |= SOC_MMU_ACCESS_PSRAM;
REG_WRITE(SPI_MEM_S_MMU_ITEM_INDEX_REG, entry_id);
REG_WRITE(SPI_MEM_S_MMU_ITEM_CONTENT_REG, mmu_val);
}
#ifdef __cplusplus
}
#endif