Initial commit

src/arch/arm/bootdesc.c

@@ -0,0 +1,45 @@
+/*
+ * Reading of bootdesc forged at build time.
+ *
+ * Copyright (C) 2007 Bahadir Balban
+ */
+
+#include <l4/lib/printk.h>
+#include <l4/lib/string.h>
+#include <l4/generic/kmalloc.h>
+#include <l4/generic/space.h>
+#include INC_ARCH(linker.h)
+#include INC_ARCH(bootdesc.h)
+#include INC_GLUE(memory.h)
+#include INC_PLAT(printascii.h)
+#include INC_SUBARCH(mm.h)
+
+struct bootdesc *bootdesc;
+
+void copy_bootdesc()
+{
+	struct bootdesc *new = kzalloc(bootdesc->desc_size);
+
+	memcpy(new, bootdesc, bootdesc->desc_size);
+	remove_mapping((unsigned long)bootdesc);
+	bootdesc = new;
+}
+
+void read_bootdesc(void)
+{
+	/*
+	 * End of the kernel image is where bootdesc resides. Note this is
+	 * not added to the page_map because it's meant to be discarded.
+	 */
+	add_mapping(virt_to_phys(_end), (unsigned long)_end, PAGE_SIZE,
+		    MAP_USR_DEFAULT_FLAGS);
+
+	/* Get original bootdesc */
+	bootdesc = (struct bootdesc *)_end;
+
+	/* Determine end of physical memory used by loaded images. */
+	for (int i = 0; i < bootdesc->total_images; i++)
+		if (bootdesc->images[i].phys_end > __svc_images_end)
+			__svc_images_end = bootdesc->images[i].phys_end;
+}
+