initial commit. working on tasking

1 files changed, 72 insertions, 0 deletions

diff --git a/boot/initrd.c b/boot/initrd.c
new file mode 100644
index 0000000..dc16d98
--- /dev/null
+++ b/boot/initrd.c
@@ -0,0 +1,72 @@
+#include "initrd.h"
+#include "init.h"
+#include "jove.h"
+#include "lib/printf.h"
+#include "lib/tar.h"
+#include "hal/obj.h"
+#include "hal/memory.h"
+
+extern uintptr_t _initrd_module;
+
+PAGEALIGN jove_objdir_t s_initrd_objdir = { 0 };
+
+#define CHECK_IF_INITRD(obj) \
+    if(obj_gettype(obj) != JOVE_OBJ_INITRD_FILE) { \
+        reterr(EBADOBJ); \
+    }
+
+int 
+initrd_file_name(jove_owned_obj_t *obj, const char **nameptr)
+{
+    CHECK_IF_INITRD(obj);
+    struct tar_header *file = obj_deref(obj);
+    *nameptr = tar_filename(file);
+    return 0;
+}
+
+int 
+initrd_file_size(jove_owned_obj_t *obj, size_t *sizeptr)
+{
+    CHECK_IF_INITRD(obj);
+    struct tar_header *file = obj_deref(obj);
+    *sizeptr = tar_filesize(file);
+    return 0;
+}
+
+int
+initrd_file_data(jove_owned_obj_t *obj, uintptr_t *dataptr)
+{
+    CHECK_IF_INITRD(obj);
+    union tar_block *file = obj_deref(obj);
+    *dataptr = (uintptr_t)&file[1];
+    return 0;
+}
+
+void initrd_setup(void)
+{
+    kprintf("Loading initrd from bootloader:\n");
+    {
+        jove_owned_obj_t *initrd_objdir_obj = obj_take(objdir_getlocal(_rootdir_obj, ROOTDIR_INITRD_I));
+        obj_settype(initrd_objdir_obj, JOVE_OBJ_OBJDIR);
+        obj_setvalue(initrd_objdir_obj, (uintmax_t)&s_initrd_objdir);
+
+        size_t initrd_files = 0;
+        union tar_block *block = phys_tovirt(_initrd_module);
+        for(;;) { 
+            struct tar_header *header = &block->header;
+            if(*header->filename == 0) break;
+
+            size_t file_size = tar_filesize(header);
+            kprintf("File: %s, Size: %i\n", tar_filename(header), file_size);
+            {
+                jove_owned_obj_t *initrd_file_obj = obj_take(objdir_getlocal(initrd_objdir_obj, initrd_files++));
+                obj_settype(initrd_file_obj, JOVE_OBJ_INITRD_FILE);
+                obj_setvalue(initrd_file_obj, (uintmax_t)block);
+                obj_release(initrd_file_obj);
+            }
+
+            block = &block[((file_size + 511) / 512) + 1];
+        }
+        obj_release(initrd_objdir_obj);
+    }
+}