4 files changed, 40 insertions, 2 deletions
diff --git a/api/error.h b/api/error.h
index 229c6c8..5e0e936 100644
--- a/api/error.h
+++ b/api/error.h
@@ -13,5 +13,7 @@
 #define EALIGN 10
 #define EEXIST 11
 #define EBUSY 12
+#define EEMPTY 13
+#define EFULL 14
 
 #endif
diff --git a/api/init.h b/api/init.h
index d23327f..ef538b4 100644
--- a/api/init.h
+++ b/api/init.h
@@ -6,14 +6,19 @@ enum {
     ROOTDIR_PROCESSORS_I,
     ROOTDIR_PAGEDIR_I,
     ROOTDIR_UNTYPED_I,
+    ROOTDIR_HWMEMORY_I,
     ROOTDIR_PCB_I,
     ROOTDIR_IOPB_I,
-    ROOTDIR_ACPI_I,
     ROOTDIR_INTERRUPTS_I,
     ROOTDIR_INITRD_I,
     ROOTDIR_MESSAGE_I,
 };
 
+struct init_payload
+{
+    void *rsdp;
+};
+
 #define ROOTDIR_SERIAL_COM_I 0x80
 #define ROOTDIR_FRAMEBUFFER_I 0x81
 #define ROOTDIR_VIRTTERM_I 0x82
diff --git a/api/obj.h b/api/obj.h
index 10f7b65..04513c1 100644
--- a/api/obj.h
+++ b/api/obj.h
@@ -10,7 +10,7 @@ enum
     JOVE_OBJ_OBJDIR,
     JOVE_OBJ_PAGEDIR,
     JOVE_OBJ_PROCESSOR,
-    JOVE_OBJ_ACPI_TABLE,
+    JOVE_OBJ_HWMEMORY,
     JOVE_OBJ_INT_HANDLE,
     JOVE_OBJ_PROCESS,
     JOVE_OBJ_INITRD_FILE,
diff --git a/api/syscall.h b/api/syscall.h
index 8c35270..4bb2eb2 100644
--- a/api/syscall.h
+++ b/api/syscall.h
@@ -115,6 +115,37 @@ struct syscall_pagedir_map
     objpath_part_t untyped_path[];
 };
 
+/**If a page frame is present at the virtual address, the kernel will:
+ *      mark the page frame as not present.
+ *      untype the page frame and move it to the none path. 
+ *      return 0.
+ * If a page frame is not present at the virtual address, the kernel will return EEMPTY.
+ * Follows the rules defined by struct syscall_pagedir_unmap
+ * */
+#define SYSCALL_PAGEDIR_UNMAP_FRAME 2
+
+/**If a page table is present at the virtual address, one of two things will happen:
+ *      If the page table has present entries, the kernel will return EBUSY.
+ *      Otherwise, the kernel will:
+ *          mark the page table as not present.
+ *          untype the page frame and move it to the none path.
+ *          return 0.
+ * If a page table is not present at the virtual address, the kernel will return EEMPTY.
+ * Follows the rules defined by the struct syscall_pagedir_unmap
+ * */
+#define SYSCALL_PAGEDIR_UNMAP_TABLE 3
+
+/**If the virtual address is above JOVE_USER_MEMORY_LIMIT, the kernel will return EBADARG.
+ * If none_pathlen exceeds the length of the message, the kernel will return ETOOBIG.
+ * If none_path does not point to a JOVE_OBJ_NONE object, the kernel will return EBADOBJ.
+ * */
+struct syscall_pagedir_unmap
+{
+    uintptr_t virtual_address;
+    uint16_t none_pathlen;
+    objpath_part_t none_path[];
+};
+
 #define SYSCALL_VTT_WRITE 0
 
 #endif