1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Old U-boot compatibility for 83xx
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_83xx
15#include "ppcboot.h"
16
17static bd_t bd;
18
19static void platform_fixups(void)
20{
21 void *soc;
22
23 dt_fixup_memory(start: bd.bi_memstart, size: bd.bi_memsize);
24 dt_fixup_mac_address_by_alias(alias: "ethernet0", addr: bd.bi_enetaddr);
25 dt_fixup_mac_address_by_alias(alias: "ethernet1", addr: bd.bi_enet1addr);
26 dt_fixup_cpu_clocks(cpufreq: bd.bi_intfreq, tbfreq: bd.bi_busfreq / 4, busfreq: bd.bi_busfreq);
27
28 /* Unfortunately, the specific model number is encoded in the
29 * soc node name in existing dts files -- once that is fixed,
30 * this can do a simple path lookup.
31 */
32 soc = find_node_by_devtype(prev: NULL, type: "soc");
33 if (soc) {
34 void *serial = NULL;
35
36 setprop(devp: soc, name: "bus-frequency", buf: &bd.bi_busfreq,
37 buflen: sizeof(bd.bi_busfreq));
38
39 while ((serial = find_node_by_devtype(prev: serial, type: "serial"))) {
40 if (get_parent(devp: serial) != soc)
41 continue;
42
43 setprop(devp: serial, name: "clock-frequency", buf: &bd.bi_busfreq,
44 buflen: sizeof(bd.bi_busfreq));
45 }
46 }
47}
48
49void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
50 unsigned long r6, unsigned long r7)
51{
52 CUBOOT_INIT();
53 fdt_init(blob: _dtb_start);
54 serial_console_init();
55 platform_ops.fixups = platform_fixups;
56}
57

source code of linux/arch/powerpc/boot/cuboot-83xx.c