The boot loader now has special support for being booted from a boot image

like floppy or CD boot.
This allows it to reduce the number of scans needed to identify the boot
partition - when booted from a real floppy, this speeds up the boot
process by a magnitude.
Also, the loader now has a fall back in case there were no "boot" links
on the disk - the current boot floppy script doesn't create them.
With these changes, I was able to boot into a HD based Haiku installation
from a floppy disk. It's not yet enough to boot from CD (as the boot
device selection is a bit too simplistic right now), but it will eventually
come next. Testing is a lot slower here, though, as neither qemu nor
Bochs support multi-session CDs (at least I have no idea how to get them
to do this).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14380 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/boot/partitions.h

@@ -10,6 +10,8 @@
 #include <disk_device_manager.h>
 
 
+struct file_system_module_info;
+
 namespace boot {
 
 class Partition : public Node, public partition_data {
@@ -25,8 +27,8 @@ class Partition : public Node, public partition_data {
 
 		Partition *AddChild();
 
-		status_t Mount(Directory **_fileSystem = NULL);
-		status_t Scan(bool mountFileSystems);
+		status_t Mount(Directory **_fileSystem = NULL, bool isBootDevice = false);
+		status_t Scan(bool mountFileSystems, bool isBootDevice = false);
 
 		void SetParent(Partition *parent) { fParent = parent; }
 		Partition *Parent() const { return fParent; }
@@ -38,6 +40,8 @@ class Partition : public Node, public partition_data {
 		int FD() const { return fFD; }
 
 	private:
+		status_t _Mount(file_system_module_info *module, Directory **_fileSystem);
+
 		int			fFD;
 		NodeList	fChildren;
 		Partition	*fParent;

headers/private/kernel/boot/platform.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2004, Axel Dörfler, [email protected].
+ * Copyright 2003-2005, Axel Dörfler, [email protected].
  * Distributed under the terms of the MIT License.
  */
 #ifndef KERNEL_BOOT_PLATFORM_H
@@ -58,6 +58,7 @@ extern status_t platform_add_block_devices(struct stage2_args *args, NodeList *d
 extern status_t platform_get_boot_partition(struct stage2_args *args, Node *bootDevice,
 					NodeList *partitions, boot::Partition **_partition);
 extern status_t platform_register_boot_device(Node *device);
+extern bool platform_boot_device_is_image();
 
 /* menu functions */
 

headers/private/kernel/boot/vfs.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2004, Axel Dörfler, [email protected].
+ * Copyright 2003-2005, Axel Dörfler, [email protected].
  * Distributed under the terms of the MIT License.
  */
 #ifndef KERNEL_BOOT_VFS_H
@@ -84,8 +84,8 @@ extern int open_from(Directory *directory, const char *path, int mode);
 
 extern Node *get_node_from(int fd);
 
-extern status_t add_partitions_for(int fd, bool mountFileSystems);
-extern status_t add_partitions_for(Node *device, bool mountFileSystems);
+extern status_t add_partitions_for(int fd, bool mountFileSystems, bool isBootDevice = false);
+extern status_t add_partitions_for(Node *device, bool mountFileSystems, bool isBootDevice = false);
 
 #endif	/* __cplusplus */