Squash commits for public release

2025-02-12 09:54:05 -05:00
commit 7118adc514
1108 changed files with 80873 additions and 0 deletions
--- a/kernel/include/platform/arm64/vmm/consts.h
+++ b/kernel/include/platform/arm64/vmm/consts.h
@@ -0,0 +1,66 @@
+#ifndef _KERNEL_PLATFORM_ARM64_VMM_CONSTS_H
+#define _KERNEL_PLATFORM_ARM64_VMM_CONSTS_H
+
+#include <libkern/types.h>
+
+static inline int vm_page_size()
+{
+    return 0x1000;
+}
+
+static inline int vm_page_mask()
+{
+    return 0xfff;
+}
+
+#define VMM_LV0_ENTITY_COUNT (512)
+#define VMM_LV1_ENTITY_COUNT (512)
+#define VMM_LV2_ENTITY_COUNT (512)
+#define VMM_LV3_ENTITY_COUNT (512)
+#define VMM_PAGE_SIZE (vm_page_size())
+
+#define PAGE_START(vaddr) ((vaddr & (~(uintptr_t)vm_page_mask())))
+#define FRAME(addr) (addr / VMM_PAGE_SIZE)
+
+#define PTABLE_LV_TOP (2)
+#define PTABLE_LV0_VADDR_OFFSET (12)
+#define PTABLE_LV1_VADDR_OFFSET (21)
+#define PTABLE_LV2_VADDR_OFFSET (30)
+#define PTABLE_LV3_VADDR_OFFSET (39)
+
+// Since arm64 uses double-table setup, this values are not used.
+#define PTABLE_TOP_KERNEL_OFFSET VMM_LV0_ENTITY_COUNT
+
+#define USER_HIGH 0x1fffffffff
+#define KERNEL_BASE 0xffffff8000000000
+#define KERNEL_PADDR_BASE 0xffffffff00000000 // up to 4gbs are supported.
+#define KERNEL_KASAN_BASE 0xfffffff000000000
+#define KERNEL_KASAN_SIZE (128 << 20) // 128MB for kasan covers 1GB of kernel space. For current need this is more than enough.
+
+// For Apl
+// static inline int get_page_size()
+// {
+//     return 0x4000;
+// }
+
+// static inline int get_page_mask()
+// {
+//     return 0x3fff;
+// }
+
+// #define VMM_LV0_ENTITY_COUNT (2048)
+// #define VMM_LV1_ENTITY_COUNT (2048)
+// #define VMM_LV2_ENTITY_COUNT (2048)
+// #define VMM_LV3_ENTITY_COUNT (2)
+// #define VMM_PAGE_SIZE (get_page_size())
+
+// #define PAGE_START(vaddr) ((vaddr & ~(uintptr_t)get_page_mask())
+// #define FRAME(addr) (addr / VMM_PAGE_SIZE)
+
+// #define PTABLE_LV_TOP (3)
+// #define PTABLE_LV0_VADDR_OFFSET (14)
+// #define PTABLE_LV1_VADDR_OFFSET (25)
+// #define PTABLE_LV2_VADDR_OFFSET (36)
+// #define PTABLE_LV3_VADDR_OFFSET (47)
+
+#endif //_KERNEL_PLATFORM_ARM64_VMM_CONSTS_H
--- a/kernel/include/platform/arm64/vmm/mmu.h
+++ b/kernel/include/platform/arm64/vmm/mmu.h
@@ -0,0 +1,30 @@
+#ifndef _KERNEL_PLATFORM_ARM64_VMM_MMU_H
+#define _KERNEL_PLATFORM_ARM64_VMM_MMU_H
+
+#include <libkern/types.h>
+#include <mem/bits/mmu.h>
+
+// arm64 uses 2 tables to manage virtual space.
+#define DOUBLE_TABLE_PAGING
+
+typedef uint64_t ptable_entity_t;
+typedef uint64_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_ARM64_VMM_MMU_H