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[libcpu/risc-v] support noncached normal memory (#7051)

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* [libcpu/risc-v] support noncached normal memory

* [mm] check before dereference in _fetch_page

* [mm] add comments on ioremap

* [ioremap] report more info on failed
This commit is contained in:
Shell
2023-03-16 10:26:55 +08:00
committed by GitHub
parent 65301b9cdd
commit 2394e75265
5 changed files with 35 additions and 16 deletions
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libcpu/risc-v/t-head/c906/riscv_mmu.h
+1
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@@ -88,6 +88,7 @@
#define MMU_MAP_K_DEVICE PTE_WRAP(PAGE_ATTR_DEV | PTE_G | PAGE_ATTR_XN | PTE_V)
#define MMU_MAP_K_RWCB PTE_WRAP(PAGE_ATTR_CB | PTE_G | PAGE_ATTR_RWX | PTE_V)
#define MMU_MAP_K_RW PTE_WRAP(PTE_G | PAGE_ATTR_RWX | PTE_V)
#define MMU_MAP_U_RWCB PTE_WRAP(PAGE_ATTR_CB | PTE_U | PAGE_ATTR_RWX | PTE_V)
#define MMU_MAP_U_RWCB_XN PTE_WRAP(PAGE_ATTR_CB | PTE_U | PAGE_ATTR_XN | PTE_V)
#define MMU_MAP_U_RW PTE_WRAP(PTE_U | PAGE_ATTR_RWX | PTE_V)
libcpu/risc-v/virt64/riscv_mmu.h
+1
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@@ -73,6 +73,7 @@
#define MMU_MAP_K_DEVICE (PTE_G | PTE_W | PTE_R | PTE_V)
#define MMU_MAP_K_RWCB (PTE_G | PTE_X | PTE_W | PTE_R | PTE_V)
#define MMU_MAP_K_RW (PTE_G | PTE_X | PTE_W | PTE_R | PTE_V)
#define MMU_MAP_U_RWCB (PTE_U | PTE_X | PTE_W | PTE_R | PTE_V)
#define MMU_MAP_U_RWCB_XN (PTE_U | PTE_W | PTE_R | PTE_V)
#define MMU_MAP_U_RW (PTE_U | PTE_X | PTE_W | PTE_R | PTE_V)