xref: /linux/arch/powerpc/boot/cuboot-85xx.c (revision d39d0ed196aa1685bb24771e92f78633c66ac9cb)
1 /*
2  * Old U-boot compatibility for 85xx
3  *
4  * Author: Scott Wood <scottwood@freescale.com>
5  *
6  * Copyright (c) 2007 Freescale Semiconductor, Inc.
7  *
8  * This program is free software; you can redistribute it and/or modify it
9  * under the terms of the GNU General Public License version 2 as published
10  * by the Free Software Foundation.
11  */
12 
13 #include "ops.h"
14 #include "stdio.h"
15 #include "cuboot.h"
16 
17 #define TARGET_85xx
18 #define TARGET_HAS_ETH3
19 #include "ppcboot.h"
20 
21 static bd_t bd;
22 
23 static void platform_fixups(void)
24 {
25 	void *soc;
26 
27 	dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
28 	dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
29 	dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr);
30 	dt_fixup_mac_address_by_alias("ethernet2", bd.bi_enet2addr);
31 	dt_fixup_mac_address_by_alias("ethernet3", bd.bi_enet3addr);
32 	dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 8, bd.bi_busfreq);
33 
34 	/* Unfortunately, the specific model number is encoded in the
35 	 * soc node name in existing dts files -- once that is fixed,
36 	 * this can do a simple path lookup.
37 	 */
38 	soc = find_node_by_devtype(NULL, "soc");
39 	if (soc) {
40 		void *serial = NULL;
41 
42 		setprop(soc, "bus-frequency", &bd.bi_busfreq,
43 		        sizeof(bd.bi_busfreq));
44 
45 		while ((serial = find_node_by_devtype(serial, "serial"))) {
46 			if (get_parent(serial) != soc)
47 				continue;
48 
49 			setprop(serial, "clock-frequency", &bd.bi_busfreq,
50 			        sizeof(bd.bi_busfreq));
51 		}
52 	}
53 }
54 
55 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
56                    unsigned long r6, unsigned long r7)
57 {
58 	CUBOOT_INIT();
59 	fdt_init(_dtb_start);
60 	serial_console_init();
61 	platform_ops.fixups = platform_fixups;
62 }
63