1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Old U-boot compatibility for MPC5200
4 *
5 * Author: Grant Likely <grant.likely@secretlab.ca>
6 *
7 * Copyright (c) 2007 Secret Lab Technologies Ltd.
8 * Copyright (c) 2007 Freescale Semiconductor, Inc.
9 */
10
11 #include "ops.h"
12 #include "stdio.h"
13 #include "io.h"
14 #include "cuboot.h"
15
16 #define TARGET_PPC_MPC52xx
17 #include "ppcboot.h"
18
19 static bd_t bd;
20
21 static void platform_fixups(void)
22 {
23 void *soc, *reg;
24 int div;
25 u32 sysfreq;
26
27
28 dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
29 dt_fixup_mac_addresses(bd.bi_enetaddr);
30 dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq);
31
32 /* Unfortunately, the specific model number is encoded in the
33 * soc node name in existing dts files -- once that is fixed,
34 * this can do a simple path lookup.
35 */
36 soc = find_node_by_devtype(NULL, "soc");
37 if (!soc)
38 soc = find_node_by_compatible(NULL, "fsl,mpc5200-immr");
39 if (!soc)
40 soc = find_node_by_compatible(NULL, "fsl,mpc5200b-immr");
41 if (soc) {
42 setprop(soc, "bus-frequency", &bd.bi_ipbfreq,
43 sizeof(bd.bi_ipbfreq));
44
45 if (!dt_xlate_reg(soc, 0, (void*)®, NULL))
46 return;
47 div = in_8(reg + 0x204) & 0x0020 ? 8 : 4;
48 sysfreq = bd.bi_busfreq * div;
49 setprop(soc, "system-frequency", &sysfreq, sizeof(sysfreq));
50 }
51 }
52
53 void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
54 unsigned long r6, unsigned long r7)
55 {
56 CUBOOT_INIT();
57 fdt_init(_dtb_start);
58 serial_console_init();
59 platform_ops.fixups = platform_fixups;
60 }
61
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