[ARM]

- don't clobber the parameter regs in the entry point,
- fix entry point address for netbsd loader emulation,
- added a gUImage global to point to the uimage blob with the tgz,
- added tgz info to platform stage2 args,
- add simple uimage support, just dumps the header and gets the nth blob in the image, (seems we have a bug in the math code, some infos don't print),
- made devices.cpp use them to publish the MemoryDisk,
- add an haiku_loader_nbsd.ub target which puts both the loader and kernel_arm for now (need to replace with the tgz).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32295 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/boot/platform/u-boot/platform_stage2_args.h

@@ -10,6 +10,8 @@
 #endif
 
 struct platform_stage2_args {
+	void *boot_tgz_data;
+	uint32 boot_tgz_size;
 };
 
 #endif	/* KERNEL_BOOT_PLATFORM_UBOOT_STAGE2_H */

headers/private/kernel/boot/platform/u-boot/uimage.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2009 Haiku Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		François Revol, [email protected]
+ */
+#ifndef KERNEL_BOOT_PLATFORM_UBOOT_UIMAGE_H
+#define KERNEL_BOOT_PLATFORM_UBOOT_UIMAGE_H
+
+#include <SupportDefs.h>
+
+/* same type and constant names as U-Boot */
+
+#define IH_TYPE_STANDALONE 1
+#define IH_TYPE_KERNEL 2
+#define IH_TYPE_RAMDISK 3
+#define IH_TYPE_MULTI 4
+
+#define IH_COMP_NONE 0
+
+#define IH_MAGIC 0x27051956
+#define IH_NMLEN 32
+
+typedef struct image_header {
+	uint32 ih_magic;
+	uint32 ih_hcrc;
+	uint32 ih_time;
+	uint32 ih_size;
+	uint32 ih_load;
+	uint32 ih_ep;
+	uint32 ih_dcrc;
+	uint8 ih_os;
+	uint8 ih_arch;
+	uint8 ih_type;
+	uint8 ih_comp;
+	char ih_name[IH_NMLEN];
+} image_header_t;
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void dump_uimage(struct image_header *image);
+bool image_multi_getimg(struct image_header *image, uint32 idx, 
+	uint32 *data, uint32 *size);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif	/* KERNEL_BOOT_PLATFORM_UBOOT_UIMAGE_H */