Squash commits for public release

kernel/include/platform/arm32/vmm/consts.h

@@ -0,0 +1,21 @@
+#define VMM_LV0_ENTITY_COUNT (256)
+#define VMM_LV1_ENTITY_COUNT (4096)
+#define VMM_PAGE_SIZE (4096)
+
+#define VMM_OFFSET_IN_DIRECTORY(a) (((a) >> 20) & 0xfff)
+#define VMM_OFFSET_IN_TABLE(a) (((a) >> 12) & 0xff)
+#define VMM_OFFSET_IN_PAGE(a) ((a)&0xfff)
+#define TABLE_START(vaddr) ((vaddr >> 20) << 20)
+#define PAGE_START(vaddr) ((vaddr >> 12) << 12)
+#define FRAME(addr) (addr / VMM_PAGE_SIZE)
+
+#define PTABLE_TOP_KERNEL_OFFSET 3072
+
+#define PTABLE_LV_TOP (1)
+#define PTABLE_LV0_VADDR_OFFSET (12)
+#define PTABLE_LV1_VADDR_OFFSET (20)
+
+#define USER_HIGH 0xbfffffff
+#define KERNEL_BASE 0xc0000000
+
+#endif //_KERNEL_PLATFORM_ARM32_VMM_CONSTS_H

kernel/include/platform/arm32/vmm/mmu.h

@@ -0,0 +1,21 @@
+typedef uint32_t ptable_entity_t;
+typedef uint32_t arch_pf_info_t;
+
+ptable_entity_t vm_mmu_to_arch_flags(mmu_flags_t mmu_flags, ptable_lv_t lv);
+mmu_flags_t vm_arch_to_mmu_flags(ptable_entity_t* entity, ptable_lv_t lv);
+mmu_pf_info_flags_t vm_arch_parse_pf_info(arch_pf_info_t info);
+
+void vm_ptable_entity_set_default_flags(ptable_entity_t* entity, ptable_lv_t lv);
+void vm_ptable_entity_allocated(ptable_entity_t* entity, ptable_lv_t lv);
+void vm_ptable_entity_invalidate(ptable_entity_t* entity, ptable_lv_t lv);
+
+void vm_ptable_entity_set_mmu_flags(ptable_entity_t* entity, ptable_lv_t lv, mmu_flags_t mmu_flags);
+void vm_ptable_entity_rm_mmu_flags(ptable_entity_t* entity, ptable_lv_t lv, mmu_flags_t mmu_flags);
+void vm_ptable_entity_set_frame(ptable_entity_t* entity, ptable_lv_t lv, uintptr_t frame);
+uintptr_t vm_ptable_entity_get_frame(ptable_entity_t* entity, ptable_lv_t lv);
+
+ptable_state_t vm_ptable_entity_state(ptable_entity_t* entity, ptable_lv_t lv);
+bool vm_ptable_entity_is_present(ptable_entity_t* entity, ptable_lv_t lv);
+bool vm_ptable_entity_is_only_allocated(ptable_entity_t* entity, ptable_lv_t lv);
+
+#endif // _KERNEL_PLATFORM_ARM32_VMM_MMU_H

kernel/include/platform/arm32/vmm/pde.h

@@ -0,0 +1,26 @@
+#ifndef _KERNEL_PLATFORM_ARM32_VMM_PDE_H
+#define _KERNEL_PLATFORM_ARM32_VMM_PDE_H
+
+#include <libkern/c_attrs.h>
+#include <libkern/types.h>
+
+struct PACKED table_desc {
+    union {
+        struct {
+            int valid : 1; /* Valid mapping */
+            int zero1 : 1;
+            int zero2 : 1;
+            int ns : 1;
+            int zero3 : 1;
+            int domain : 4;
+            int imp : 1;
+            int baddr : 22;
+        };
+        uint32_t data;
+    };
+};
+typedef struct table_desc table_desc_t;
+
+#define TABLE_DESC_FRAME_OFFSET 10
+
+#endif //_KERNEL_PLATFORM_ARM32_VMM_PDE_H

kernel/include/platform/arm32/vmm/pte.h

@@ -0,0 +1,31 @@
+#ifndef _KERNEL_PLATFORM_ARM32_VMM_PTE_H
+#define _KERNEL_PLATFORM_ARM32_VMM_PTE_H
+
+#include <libkern/c_attrs.h>
+#include <libkern/types.h>
+#include <mem/bits/mmu.h>
+
+typedef uint32_t ptable_entity_t;
+
+struct PACKED page_desc {
+    union {
+        struct {
+            unsigned int xn : 1; // Execute never. Stops execution of page.
+            unsigned int one : 1; // Always one for tables
+            unsigned int b : 1; // cacheable
+            unsigned int c : 1; // Cacheable
+            unsigned int ap1 : 2;
+            unsigned int tex : 3;
+            unsigned int ap2 : 1;
+            unsigned int s : 1;
+            unsigned int ng : 1;
+            unsigned int baddr : 20;
+        };
+        uint32_t data;
+    };
+};
+typedef struct page_desc page_desc_t;
+
+#define PAGE_DESC_FRAME_OFFSET 12
+
+#endif //_KERNEL_PLATFORM_ARM32_VMM_PTE_H