1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Old U-boot compatibility for MPC5200
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Author: Grant Likely <grant.likely@secretlab.ca>
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Copyright (c) 2007 Secret Lab Technologies Ltd.
8*4882a593Smuzhiyun * Copyright (c) 2007 Freescale Semiconductor, Inc.
9*4882a593Smuzhiyun */
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include "ops.h"
12*4882a593Smuzhiyun #include "stdio.h"
13*4882a593Smuzhiyun #include "io.h"
14*4882a593Smuzhiyun #include "cuboot.h"
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #define TARGET_PPC_MPC52xx
17*4882a593Smuzhiyun #include "ppcboot.h"
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun static bd_t bd;
20*4882a593Smuzhiyun
platform_fixups(void)21*4882a593Smuzhiyun static void platform_fixups(void)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun void *soc, *reg;
24*4882a593Smuzhiyun int div;
25*4882a593Smuzhiyun u32 sysfreq;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
29*4882a593Smuzhiyun dt_fixup_mac_addresses(bd.bi_enetaddr);
30*4882a593Smuzhiyun dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq);
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun /* Unfortunately, the specific model number is encoded in the
33*4882a593Smuzhiyun * soc node name in existing dts files -- once that is fixed,
34*4882a593Smuzhiyun * this can do a simple path lookup.
35*4882a593Smuzhiyun */
36*4882a593Smuzhiyun soc = find_node_by_devtype(NULL, "soc");
37*4882a593Smuzhiyun if (!soc)
38*4882a593Smuzhiyun soc = find_node_by_compatible(NULL, "fsl,mpc5200-immr");
39*4882a593Smuzhiyun if (!soc)
40*4882a593Smuzhiyun soc = find_node_by_compatible(NULL, "fsl,mpc5200b-immr");
41*4882a593Smuzhiyun if (soc) {
42*4882a593Smuzhiyun setprop(soc, "bus-frequency", &bd.bi_ipbfreq,
43*4882a593Smuzhiyun sizeof(bd.bi_ipbfreq));
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun if (!dt_xlate_reg(soc, 0, (void*)®, NULL))
46*4882a593Smuzhiyun return;
47*4882a593Smuzhiyun div = in_8(reg + 0x204) & 0x0020 ? 8 : 4;
48*4882a593Smuzhiyun sysfreq = bd.bi_busfreq * div;
49*4882a593Smuzhiyun setprop(soc, "system-frequency", &sysfreq, sizeof(sysfreq));
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun }
52*4882a593Smuzhiyun
platform_init(unsigned long r3,unsigned long r4,unsigned long r5,unsigned long r6,unsigned long r7)53*4882a593Smuzhiyun void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
54*4882a593Smuzhiyun unsigned long r6, unsigned long r7)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun CUBOOT_INIT();
57*4882a593Smuzhiyun fdt_init(_dtb_start);
58*4882a593Smuzhiyun serial_console_init();
59*4882a593Smuzhiyun platform_ops.fixups = platform_fixups;
60*4882a593Smuzhiyun }
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