Squash commits for public release

kernel/include/platform/arm64/system.h

@@ -0,0 +1,111 @@
+#ifndef _KERNEL_PLATFORM_ARM64_SYSTEM_H
+#define _KERNEL_PLATFORM_ARM64_SYSTEM_H
+
+#include <libkern/c_attrs.h>
+#include <libkern/types.h>
+#include <platform/generic/registers.h>
+
+/**
+ * INTS
+ */
+
+void system_disable_interrupts();
+void system_enable_interrupts();
+void system_enable_interrupts_only_counter();
+
+inline static void system_instruction_barrier()
+{
+    asm volatile("isb");
+}
+
+inline static void system_data_synchronise_barrier()
+{
+    asm volatile("dsb sy");
+}
+
+inline static void system_data_memory_barrier()
+{
+    asm volatile("dmb sy");
+}
+
+inline static void system_disable_interrupts_no_counter()
+{
+    asm volatile("msr daifset, #0xf");
+    system_instruction_barrier();
+}
+
+inline static void system_enable_interrupts_no_counter()
+{
+    asm volatile("msr daifclr, #0xf");
+    system_instruction_barrier();
+}
+
+/**
+ * PAGING
+ */
+
+extern void system_set_pdir(uintptr_t pdir0, uintptr_t pdir1);
+
+inline static void system_flush_local_tlb_entry(uintptr_t vaddr)
+{
+    asm volatile("isb");
+    asm volatile("tlbi vmalle1\n");
+    asm volatile("dsb sy");
+}
+
+inline static void system_flush_all_cpus_tlb_entry(uintptr_t vaddr)
+{
+    asm volatile("isb");
+    asm volatile("tlbi vmalle1\n");
+    asm volatile("dsb sy");
+}
+
+inline static void system_flush_whole_tlb()
+{
+    asm volatile("isb");
+    asm volatile("tlbi vmalle1\n");
+    asm volatile("dsb sy");
+}
+
+inline static void system_enable_write_protect()
+{
+}
+
+inline static void system_disable_write_protect()
+{
+}
+
+inline static void system_enable_paging()
+{
+}
+
+inline static void system_disable_paging()
+{
+}
+
+inline static void system_stop_until_interrupt()
+{
+    asm volatile("wfi");
+}
+
+NORETURN inline static void system_stop()
+{
+    system_disable_interrupts();
+    system_stop_until_interrupt();
+    while (1) { }
+}
+
+void system_cache_invalidate(void* addr, size_t size);
+void system_cache_clean_and_invalidate(void* addr, size_t size);
+void system_cache_clean(void* addr, size_t size);
+
+/**
+ * CPU
+ */
+
+inline static int system_cpu_id()
+{
+    return 0;
+}
+
+#endif /* _KERNEL_PLATFORM_ARM64_SYSTEM_H */