1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Old U-boot compatibility for 85xx
4 *
5 * Author: Scott Wood <scottwood@freescale.com>
6 *
7 * Copyright (c) 2007 Freescale Semiconductor, Inc.
8 */
9
10#include "ops.h"
11#include "stdio.h"
12#include "cuboot.h"
13
14#define TARGET_85xx
15#define TARGET_HAS_ETH3
16#include "ppcboot.h"
17
18static bd_t bd;
19
20static void platform_fixups(void)
21{
22 void *soc;
23
24 dt_fixup_memory(start: bd.bi_memstart, size: bd.bi_memsize);
25 dt_fixup_mac_address_by_alias(alias: "ethernet0", addr: bd.bi_enetaddr);
26 dt_fixup_mac_address_by_alias(alias: "ethernet1", addr: bd.bi_enet1addr);
27 dt_fixup_mac_address_by_alias(alias: "ethernet2", addr: bd.bi_enet2addr);
28 dt_fixup_mac_address_by_alias(alias: "ethernet3", addr: bd.bi_enet3addr);
29 dt_fixup_cpu_clocks(cpufreq: bd.bi_intfreq, tbfreq: bd.bi_busfreq / 8, busfreq: bd.bi_busfreq);
30
31 /* Unfortunately, the specific model number is encoded in the
32 * soc node name in existing dts files -- once that is fixed,
33 * this can do a simple path lookup.
34 */
35 soc = find_node_by_devtype(prev: NULL, type: "soc");
36 if (soc) {
37 void *serial = NULL;
38
39 setprop(devp: soc, name: "bus-frequency", buf: &bd.bi_busfreq,
40 buflen: sizeof(bd.bi_busfreq));
41
42 while ((serial = find_node_by_devtype(prev: serial, type: "serial"))) {
43 if (get_parent(devp: serial) != soc)
44 continue;
45
46 setprop(devp: serial, name: "clock-frequency", buf: &bd.bi_busfreq,
47 buflen: sizeof(bd.bi_busfreq));
48 }
49 }
50}
51
52void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
53 unsigned long r6, unsigned long r7)
54{
55 CUBOOT_INIT();
56 fdt_init(blob: _dtb_start);
57 serial_console_init();
58 platform_ops.fixups = platform_fixups;
59}
60

source code of linux/arch/powerpc/boot/cuboot-85xx.c